2025
Minguito-Frutos, Mario; Buñuel, Xavier; Marco-Méndez, Candela; Sanmartí, Neus; Skouradakis, Grigorios; Boada, Jordi; Pagès, Jordi F.; Alcoverro, Teresa; Arthur, Rohan
Tropical range extending herbivorous fishes gain foraging benefits by shoaling with native temperate species Journal Article
In: vol. 15, no. 1, pp. 35137, 2025, ISSN: 2045-2322.
@article{minguito-frutos_tropical_2025,
title = {Tropical range extending herbivorous fishes gain foraging benefits by shoaling with native temperate species},
author = {Mario Minguito-Frutos and Xavier Buñuel and Candela Marco-Méndez and Neus Sanmartí and Grigorios Skouradakis and Jordi Boada and Jordi F. Pagès and Teresa Alcoverro and Rohan Arthur},
url = {https://www.nature.com/articles/s41598-025-19136-x
/wp-content/uploads/2025/11/2025-Minguito-Frutos-SciRep-60.pdf
},
doi = {10.1038/s41598-025-19136-x},
issn = {2045-2322},
year = {2025},
date = {2025-10-23},
urldate = {2025-10-08},
volume = {15},
number = {1},
pages = {35137},
abstract = {Abstract
Tropicalization creates novel species assemblages in temperate ecosystems as range-extending species move. The sociality of range-extending species could facilitate their establishment, particularly if they associate with natives. The eastern Mediterranean Sea has witnessed widespread collapses of vegetated ecosystems since the arrival of the tropical rabbitfishes
Siganus rivulatus
and
Siganus luridus
. We explored whether mixed-species shoaling influenced the fish foraging activity of the novel herbivore assemblage. We recorded 250 shoals, 30% composed exclusively of native species (i.e.,
Sarpa salpa
and
Sparisoma cretense
), 43% of rabbitfish, and 27% of species from both origins.
S. rivulatus
was the most gregarious species, establishing positive shoaling associations with
S. luridus
and
S. salpa
, whereas
S. cretense
was the least sociable. Foraging differed between native and range-extending species. Compared to native species in mixed-species shoals, range-extending species increased their bite rates with shoal size, both in mono- and multi-specific groups, indicating that they boosted their foraging efficiency (i.e., increased bites per minute) when foraging in large groups, regardless of which species they shoaled with. Native species, in contrast, only increased their bite rates with shoal size while foraging in mono-specific groups. Thus, our study shows that, unlike natives, range-extending species may gain foraging benefits from facilitative associations in mixed-species shoals. This gregarious behaviour could help explain the disproportionate herbivory pressures range-extending species impose on tropicalized ecosystems.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Abstract
Tropicalization creates novel species assemblages in temperate ecosystems as range-extending species move. The sociality of range-extending species could facilitate their establishment, particularly if they associate with natives. The eastern Mediterranean Sea has witnessed widespread collapses of vegetated ecosystems since the arrival of the tropical rabbitfishes
Siganus rivulatus
and
Siganus luridus
. We explored whether mixed-species shoaling influenced the fish foraging activity of the novel herbivore assemblage. We recorded 250 shoals, 30% composed exclusively of native species (i.e.,
Sarpa salpa
and
Sparisoma cretense
), 43% of rabbitfish, and 27% of species from both origins.
S. rivulatus
was the most gregarious species, establishing positive shoaling associations with
S. luridus
and
S. salpa
, whereas
S. cretense
was the least sociable. Foraging differed between native and range-extending species. Compared to native species in mixed-species shoals, range-extending species increased their bite rates with shoal size, both in mono- and multi-specific groups, indicating that they boosted their foraging efficiency (i.e., increased bites per minute) when foraging in large groups, regardless of which species they shoaled with. Native species, in contrast, only increased their bite rates with shoal size while foraging in mono-specific groups. Thus, our study shows that, unlike natives, range-extending species may gain foraging benefits from facilitative associations in mixed-species shoals. This gregarious behaviour could help explain the disproportionate herbivory pressures range-extending species impose on tropicalized ecosystems.
Tropicalization creates novel species assemblages in temperate ecosystems as range-extending species move. The sociality of range-extending species could facilitate their establishment, particularly if they associate with natives. The eastern Mediterranean Sea has witnessed widespread collapses of vegetated ecosystems since the arrival of the tropical rabbitfishes
Siganus rivulatus
and
Siganus luridus
. We explored whether mixed-species shoaling influenced the fish foraging activity of the novel herbivore assemblage. We recorded 250 shoals, 30% composed exclusively of native species (i.e.,
Sarpa salpa
and
Sparisoma cretense
), 43% of rabbitfish, and 27% of species from both origins.
S. rivulatus
was the most gregarious species, establishing positive shoaling associations with
S. luridus
and
S. salpa
, whereas
S. cretense
was the least sociable. Foraging differed between native and range-extending species. Compared to native species in mixed-species shoals, range-extending species increased their bite rates with shoal size, both in mono- and multi-specific groups, indicating that they boosted their foraging efficiency (i.e., increased bites per minute) when foraging in large groups, regardless of which species they shoaled with. Native species, in contrast, only increased their bite rates with shoal size while foraging in mono-specific groups. Thus, our study shows that, unlike natives, range-extending species may gain foraging benefits from facilitative associations in mixed-species shoals. This gregarious behaviour could help explain the disproportionate herbivory pressures range-extending species impose on tropicalized ecosystems.
Daraghmeh, Nauras; Exter, Katrina; Pagnier, Justine; Balazy, Piotr; Cancio, Ibon; Chatzigeorgiou, Giorgos; Chatzinikolaou, Eva; Chelchowski, Maciej; Chrismas, Nathan Alexis Mitchell; Comtet, Thierry; Dailianis, Thanos; Deneudt, Klaas; Cerio, Oihane Diaz De; Digenis, Markos; Gerovasileiou, Vasilis; González, José; Kauppi, Laura; Kristoffersen, Jon Bent; Kukliński, Piotr; Lasota, Rafał; Levy, Liraz; Małachowicz, Magdalena; Mavrič, Borut; Mortelmans, Jonas; Paredes, Estefania; Poćwierz‐Kotus, Anita; Reiss, Henning; Santi, Ioulia; Sarafidou, Georgia; Skouradakis, Grigorios; Solbakken, Jostein; Staehr, Peter A U; Tajadura, Javier; Thyrring, Jakob; Troncoso, Jesus S; Vernadou, Emmanouela; Viard, Frederique; Zafeiropoulos, Haris; Zbawicka, Małgorzata; Pavloudi, Christina; Obst, Matthias
A Long-Term Ecological Research Data Set From the Marine Genetic Monitoring Program ARMS-MBON 2018–2020 Journal Article
In: Molecular Ecology Resources, pp. e14073, 2025, ISSN: 1755-098X, 1755-0998.
@article{daraghmeh_longterm_2025,
title = {A Long-Term Ecological Research Data Set From the Marine Genetic Monitoring Program ARMS-MBON 2018–2020},
author = {Nauras Daraghmeh and Katrina Exter and Justine Pagnier and Piotr Balazy and Ibon Cancio and Giorgos Chatzigeorgiou and Eva Chatzinikolaou and Maciej Chelchowski and Nathan Alexis Mitchell Chrismas and Thierry Comtet and Thanos Dailianis and Klaas Deneudt and Oihane Diaz De Cerio and Markos Digenis and Vasilis Gerovasileiou and José González and Laura Kauppi and Jon Bent Kristoffersen and Piotr Kukliński and Rafał Lasota and Liraz Levy and Magdalena Małachowicz and Borut Mavrič and Jonas Mortelmans and Estefania Paredes and Anita Poćwierz‐Kotus and Henning Reiss and Ioulia Santi and Georgia Sarafidou and Grigorios Skouradakis and Jostein Solbakken and Peter A U Staehr and Javier Tajadura and Jakob Thyrring and Jesus S Troncoso and Emmanouela Vernadou and Frederique Viard and Haris Zafeiropoulos and Małgorzata Zbawicka and Christina Pavloudi and Matthias Obst},
url = {https://onlinelibrary.wiley.com/doi/10.1111/1755-0998.14073
/wp-content/uploads/2025/02/2025-Daraghmeh-MolEcoRes-6.pdf},
doi = {10.1111/1755-0998.14073},
issn = {1755-098X, 1755-0998},
year = {2025},
date = {2025-02-05},
urldate = {2025-02-05},
journal = {Molecular Ecology Resources},
pages = {e14073},
abstract = {ABSTRACT
Molecular methods such as DNA/eDNA metabarcoding have emerged as useful tools to document the biodiversity of complex communities over large spatio‐temporal scales. We established an international Marine Biodiversity Observation Network (ARMS‐MBON) combining standardised sampling using autonomous reef monitoring structures (ARMS) with metabarcoding for genetic monitoring of marine hard‐bottom benthic communities. Here, we present the data of our first sampling campaign comprising 56 ARMS units deployed in 2018–2019 and retrieved in 2018–2020 across 15 observatories along the coasts of Europe and adjacent regions. We describe the open‐access data set (image, genetic and metadata) and explore the genetic data to show its potential for marine biodiversity monitoring and ecological research. Our analysis shows that ARMS recovered more than 60 eukaryotic phyla capturing diversity of up to textasciitilde5500 amplicon sequence variants and textasciitilde1800 operational taxonomic units, and up to textasciitilde250 and textasciitilde50 species per observatory using the cytochrome
c
oxidase subunit I (COI) and 18S rRNA marker genes, respectively. Further, ARMS detected threatened, vulnerable and non‐indigenous species often targeted in biological monitoring. We show that while deployment duration does not drive diversity estimates, sampling effort and sequencing depth across observatories do. We recommend that ARMS should be deployed for at least 3–6 months during the main growth season to use resources as efficiently as possible and that post‐sequencing curation is applied to enable statistical comparison of spatio‐temporal entities. We suggest that ARMS should be used in biological monitoring programs and long‐term ecological research and encourage the adoption of our ARMS‐MBON protocols.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
ABSTRACT
Molecular methods such as DNA/eDNA metabarcoding have emerged as useful tools to document the biodiversity of complex communities over large spatio‐temporal scales. We established an international Marine Biodiversity Observation Network (ARMS‐MBON) combining standardised sampling using autonomous reef monitoring structures (ARMS) with metabarcoding for genetic monitoring of marine hard‐bottom benthic communities. Here, we present the data of our first sampling campaign comprising 56 ARMS units deployed in 2018–2019 and retrieved in 2018–2020 across 15 observatories along the coasts of Europe and adjacent regions. We describe the open‐access data set (image, genetic and metadata) and explore the genetic data to show its potential for marine biodiversity monitoring and ecological research. Our analysis shows that ARMS recovered more than 60 eukaryotic phyla capturing diversity of up to textasciitilde5500 amplicon sequence variants and textasciitilde1800 operational taxonomic units, and up to textasciitilde250 and textasciitilde50 species per observatory using the cytochrome
c
oxidase subunit I (COI) and 18S rRNA marker genes, respectively. Further, ARMS detected threatened, vulnerable and non‐indigenous species often targeted in biological monitoring. We show that while deployment duration does not drive diversity estimates, sampling effort and sequencing depth across observatories do. We recommend that ARMS should be deployed for at least 3–6 months during the main growth season to use resources as efficiently as possible and that post‐sequencing curation is applied to enable statistical comparison of spatio‐temporal entities. We suggest that ARMS should be used in biological monitoring programs and long‐term ecological research and encourage the adoption of our ARMS‐MBON protocols.
Molecular methods such as DNA/eDNA metabarcoding have emerged as useful tools to document the biodiversity of complex communities over large spatio‐temporal scales. We established an international Marine Biodiversity Observation Network (ARMS‐MBON) combining standardised sampling using autonomous reef monitoring structures (ARMS) with metabarcoding for genetic monitoring of marine hard‐bottom benthic communities. Here, we present the data of our first sampling campaign comprising 56 ARMS units deployed in 2018–2019 and retrieved in 2018–2020 across 15 observatories along the coasts of Europe and adjacent regions. We describe the open‐access data set (image, genetic and metadata) and explore the genetic data to show its potential for marine biodiversity monitoring and ecological research. Our analysis shows that ARMS recovered more than 60 eukaryotic phyla capturing diversity of up to textasciitilde5500 amplicon sequence variants and textasciitilde1800 operational taxonomic units, and up to textasciitilde250 and textasciitilde50 species per observatory using the cytochrome
c
oxidase subunit I (COI) and 18S rRNA marker genes, respectively. Further, ARMS detected threatened, vulnerable and non‐indigenous species often targeted in biological monitoring. We show that while deployment duration does not drive diversity estimates, sampling effort and sequencing depth across observatories do. We recommend that ARMS should be deployed for at least 3–6 months during the main growth season to use resources as efficiently as possible and that post‐sequencing curation is applied to enable statistical comparison of spatio‐temporal entities. We suggest that ARMS should be used in biological monitoring programs and long‐term ecological research and encourage the adoption of our ARMS‐MBON protocols.
2024
Skouradakis, Grigorios; Vernadou, Emmanouela; Koulouri, Panayota; Dailianis, Thanos
Mass mortality of the invasive echinoid Diadema setosum (Leske, 1778) in Crete, East Mediterranean Sea Journal Article
In: Mediterranean Marine Science, vol. 25, no. 2, pp. 480–483, 2024, ISSN: 1791-6763, 1108-393X.
@article{skouradakis_mass_2024,
title = {Mass mortality of the invasive echinoid Diadema setosum (Leske, 1778) in Crete, East Mediterranean Sea},
author = {Grigorios Skouradakis and Emmanouela Vernadou and Panayota Koulouri and Thanos Dailianis},
url = {https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/36447
https://imbbc.hcmr.gr/wp-content/uploads/2024/09/2024-Skouradakis-MMS-41.pdf},
doi = {10.12681/mms.36447},
issn = {1791-6763, 1108-393X},
year = {2024},
date = {2024-09-23},
urldate = {2024-09-23},
journal = {Mediterranean Marine Science},
volume = {25},
number = {2},
pages = {480--483},
abstract = {Diadema setosum is an echinoid of Indo-Pacific origin that invaded the Mediterranean Sea in 2006. It is an ecosystem engineer with an important ecological function in its native range, but it can have a detrimental effect on Mediterranean reefs. Recently in 2022 a mass mortality event (MME) affecting this species was recorded in the east Aegean Sea in the eastern part of the Mediterranean basin. We are reporting herein a westward progression of the MME in 2023 affecting established populations in various locations around the island of Crete.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Diadema setosum is an echinoid of Indo-Pacific origin that invaded the Mediterranean Sea in 2006. It is an ecosystem engineer with an important ecological function in its native range, but it can have a detrimental effect on Mediterranean reefs. Recently in 2022 a mass mortality event (MME) affecting this species was recorded in the east Aegean Sea in the eastern part of the Mediterranean basin. We are reporting herein a westward progression of the MME in 2023 affecting established populations in various locations around the island of Crete.
2022
Montesanto, Federica; Albano, Marco; Ayas, Dενιζ; Betti, Federico; Capillo, Gioele; Çinar, Melih Ertan; Corsini-Foka, Maria; Crocetta, Fabio; Dağli, Ertan; D’Iglio, Claudio; Digenis, Markos; Dragičević, Branko; Famulari, Sergio; Ergüden, Deniz; Giova, Antonio; Giussani, Valentina; Hoffman, Razy; Isajlović, Igor; Lipej, Lovrenc; López-Esclapez, Raquel; Mastrototaro, Francesco; Moreni, Alessandra; Orenes-Salazar, Victor; Ovalis, Panayotis Ovalis Panayotis; Plaiti, Wanda; Pujol, Juan A; Rabaoui, Lotfi; Rallis, Ioannis; Rogelja, Manja; Savoca, Serena; Skouradakis, Grigorios; Tiralongo, Francesco; Toma, Margherita; Trkov, Domen; Ubero-Pascal, Nicolas; Yacoubi, Lamia; Yalgin, Ferhat; Yapici, Sercan; Zamuda, Leon L
New records of rare species in the Mediterranean Sea (December 2022) Journal Article
In: Mediterranean Marine Science, vol. 23, no. 4, pp. 968–994, 2022, ISSN: 1791-6763, 1108-393X.
@article{montesanto_new_2022,
title = {New records of rare species in the Mediterranean Sea (December 2022)},
author = {Federica Montesanto and Marco Albano and Dενιζ Ayas and Federico Betti and Gioele Capillo and Melih Ertan Çinar and Maria Corsini-Foka and Fabio Crocetta and Ertan Dağli and Claudio D’Iglio and Markos Digenis and Branko Dragičević and Sergio Famulari and Deniz Ergüden and Antonio Giova and Valentina Giussani and Razy Hoffman and Igor Isajlović and Lovrenc Lipej and Raquel López-Esclapez and Francesco Mastrototaro and Alessandra Moreni and Victor Orenes-Salazar and Panayotis Ovalis Panayotis Ovalis and Wanda Plaiti and Juan A Pujol and Lotfi Rabaoui and Ioannis Rallis and Manja Rogelja and Serena Savoca and Grigorios Skouradakis and Francesco Tiralongo and Margherita Toma and Domen Trkov and Nicolas Ubero-Pascal and Lamia Yacoubi and Ferhat Yalgin and Sercan Yapici and Leon L Zamuda},
url = {https://imbbc.hcmr.gr/wp-content/uploads/2022/12/2022-Montesanto-MMS-79.pdf
https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/32369},
doi = {10.12681/mms.32369},
issn = {1791-6763, 1108-393X},
year = {2022},
date = {2022-12-19},
urldate = {2022-12-20},
journal = {Mediterranean Marine Science},
volume = {23},
number = {4},
pages = {968--994},
abstract = {This Collective Article presents information on 20 taxa belonging to five (5) Phyla: Cnidaria (2), Mollusca (8), Arthropoda (4), Echinodermata (1) and Chordata (5) recorded from the Alboran Sea to the Levantine Sea. These new records were found in seven (7) different ecoregions as follows: Alboran Sea: new record of the rare football octopus Ocythoe tuberculata in the harbour of Algeciras (Spain); Western Mediterranean Sea: first record of the isopod Arcturinella deltensis in the Ligurian Sea, and the third in the whole Mediterranean Sea; third Mediterranean site for the Muricidae Coralliophila ahuiri along the Italian coasts (Alghero); first and westernmost record of the goby Corcyrogobius liechtensteini from the Iberian Peninsula; new record of the sea slug Glaucus atlanticus from the coast of the Iberian Peninsula; first and easternmost record of Holothuria (Vaneyothuria) lentiginosa lentiginosa along the Italian coasts; Tunisian Plateau/Gulf of Sidra: seventh record of the oceanic squid Thysanoteuthis rhombus in Tunisia, and first for the Gulf of Gabes. Ionian Sea: second occurrence of the Atlantic tripletail Lobotes surinamensis in the Ionian Sea and first record from the Strait of Messina area; new record of the rare sea elephant Pterotrachea coronata from the Strait of Messina; Adriatic Sea: first record of a facies of football ascidian Diazona violacea in the South Adriatic Sea (Tremiti Island, Italy); two records of the sevengill shark Heptranchias perlo in Croatian waters after more than 70 years of absence of documented records in this area; first known occurrence of the nudibranch Jalonus hyalinus in Slovenian waters and also the first known occurrence of this species in the Adriatic Sea; first record of the nudibranch Okenia elegans in Slovenian waters; Aegean Sea: First record of the parasitic isopod Nerocila milesensis along Greek coasts (Crete island) as well as the second record worldwide; additional record of the brachyuran Paragalene longicrura collected from the Saronikos Gulf (Greece); first record of the siphonophore Rhizophysa filiformis in Greek waters as well as the second record of this species in the eastern Mediterranean basin; new record of the rare and protected angelshark Squatina aculeata along Turkish coasts; Levantine Sea: first record of the marine amphipod Caprella andreae in the Levantine Mediterranean shore of Israel, based on both morphological and molecular data; first occurrence of the cephalopod Tremoctopus violaceus along Turkish coasts, which confirms its presence in the north-eastern coasts of Turkey; record of a bloom of the thermophilic jellyfish Pelagia noctiluca in the north Levantine Sea.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This Collective Article presents information on 20 taxa belonging to five (5) Phyla: Cnidaria (2), Mollusca (8), Arthropoda (4), Echinodermata (1) and Chordata (5) recorded from the Alboran Sea to the Levantine Sea. These new records were found in seven (7) different ecoregions as follows: Alboran Sea: new record of the rare football octopus Ocythoe tuberculata in the harbour of Algeciras (Spain); Western Mediterranean Sea: first record of the isopod Arcturinella deltensis in the Ligurian Sea, and the third in the whole Mediterranean Sea; third Mediterranean site for the Muricidae Coralliophila ahuiri along the Italian coasts (Alghero); first and westernmost record of the goby Corcyrogobius liechtensteini from the Iberian Peninsula; new record of the sea slug Glaucus atlanticus from the coast of the Iberian Peninsula; first and easternmost record of Holothuria (Vaneyothuria) lentiginosa lentiginosa along the Italian coasts; Tunisian Plateau/Gulf of Sidra: seventh record of the oceanic squid Thysanoteuthis rhombus in Tunisia, and first for the Gulf of Gabes. Ionian Sea: second occurrence of the Atlantic tripletail Lobotes surinamensis in the Ionian Sea and first record from the Strait of Messina area; new record of the rare sea elephant Pterotrachea coronata from the Strait of Messina; Adriatic Sea: first record of a facies of football ascidian Diazona violacea in the South Adriatic Sea (Tremiti Island, Italy); two records of the sevengill shark Heptranchias perlo in Croatian waters after more than 70 years of absence of documented records in this area; first known occurrence of the nudibranch Jalonus hyalinus in Slovenian waters and also the first known occurrence of this species in the Adriatic Sea; first record of the nudibranch Okenia elegans in Slovenian waters; Aegean Sea: First record of the parasitic isopod Nerocila milesensis along Greek coasts (Crete island) as well as the second record worldwide; additional record of the brachyuran Paragalene longicrura collected from the Saronikos Gulf (Greece); first record of the siphonophore Rhizophysa filiformis in Greek waters as well as the second record of this species in the eastern Mediterranean basin; new record of the rare and protected angelshark Squatina aculeata along Turkish coasts; Levantine Sea: first record of the marine amphipod Caprella andreae in the Levantine Mediterranean shore of Israel, based on both morphological and molecular data; first occurrence of the cephalopod Tremoctopus violaceus along Turkish coasts, which confirms its presence in the north-eastern coasts of Turkey; record of a bloom of the thermophilic jellyfish Pelagia noctiluca in the north Levantine Sea.
Mancinelli, Giorgio; Dailianis, Thanos; Dounas, Costas; Kasapidis, Panagiotis; Koulouri, Panayota; Skouradakis, Grigorios; Bardelli, Roberta; Muri, Cristina Di; Guerra, Maria Teresa; Vizzini, Salvatrice
In: Sustainability, vol. 14, no. 22, pp. 15202, 2022, ISSN: 2071-1050.
@article{mancinelli_isotopic_2022,
title = {Isotopic Niche and Trophic Position of the Invasive Portunid Portunus segnis Forskål, (1775) in Elounda Bay (Crete Island, Eastern Mediterranean)},
author = {Giorgio Mancinelli and Thanos Dailianis and Costas Dounas and Panagiotis Kasapidis and Panayota Koulouri and Grigorios Skouradakis and Roberta Bardelli and Cristina Di Muri and Maria Teresa Guerra and Salvatrice Vizzini},
url = {https://imbbc.hcmr.gr/wp-content/uploads/2022/11/2022-Mancinelli-Sustain-77.pdf
https://www.mdpi.com/2071-1050/14/22/15202},
doi = {10.3390/su142215202},
issn = {2071-1050},
year = {2022},
date = {2022-11-21},
urldate = {2022-11-21},
journal = {Sustainability},
volume = {14},
number = {22},
pages = {15202},
abstract = {There is a growing recognition that an advanced understanding of the trophic characteristics of an invasive consumer can provide important information on its ecological impact. In recent years, the blue swimming crab Portunus segnis, one of the earliest Lessepsian invaders, has considerably expanded its distribution range in the Mediterranean Sea, yet, its trophic habits in invaded areas remain scarcely investigated. In this study, we used carbon and nitrogen stable isotopes analysis (SIA) to determine the trophic position and isotopic niche of the crab compared with other representatives of the flora and fauna occurring in Elounda Bay (Crete). P. segnis showed a trophic position of 3.9, higher than the values determined by SIA or conventional gut content analysis in other areas of the Mediterranean Sea or in the native range. Crab specimens showed a high inter-individual variability in both δ13C and δ15N values; further analysis indicated negligible differences in the isotopic niche of adult males and females. Conversely, δ15N values were significantly related to the size of the specimens, ultimately suggesting an ontogenetic dietary shift. This study represents the first attempt to characterize the trophic habits of the blue swimming crab in the context of an invaded food web and may contribute to the implementation of long-term management strategies of control and mitigation of its ecological impact.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
There is a growing recognition that an advanced understanding of the trophic characteristics of an invasive consumer can provide important information on its ecological impact. In recent years, the blue swimming crab Portunus segnis, one of the earliest Lessepsian invaders, has considerably expanded its distribution range in the Mediterranean Sea, yet, its trophic habits in invaded areas remain scarcely investigated. In this study, we used carbon and nitrogen stable isotopes analysis (SIA) to determine the trophic position and isotopic niche of the crab compared with other representatives of the flora and fauna occurring in Elounda Bay (Crete). P. segnis showed a trophic position of 3.9, higher than the values determined by SIA or conventional gut content analysis in other areas of the Mediterranean Sea or in the native range. Crab specimens showed a high inter-individual variability in both δ13C and δ15N values; further analysis indicated negligible differences in the isotopic niche of adult males and females. Conversely, δ15N values were significantly related to the size of the specimens, ultimately suggesting an ontogenetic dietary shift. This study represents the first attempt to characterize the trophic habits of the blue swimming crab in the context of an invaded food web and may contribute to the implementation of long-term management strategies of control and mitigation of its ecological impact.
Magneville, Camille; Bricquir, Marie‐Lou Leréec Le; Dailianis, Thanos; Skouradakis, Grigorios; Claverie, Thomas; Villéger, Sébastien
Long‐duration remote underwater videos reveal that grazing by fishes is highly variable through time and dominated by non‐indigenous species Journal Article
In: Remote Sensing in Ecology and Conservation, pp. rse2.311, 2022, ISSN: 2056-3485, 2056-3485.
@article{magneville_longduration_2022,
title = {Long‐duration remote underwater videos reveal that grazing by fishes is highly variable through time and dominated by non‐indigenous species},
author = {Camille Magneville and Marie‐Lou Leréec Le Bricquir and Thanos Dailianis and Grigorios Skouradakis and Thomas Claverie and Sébastien Villéger},
editor = {Kylie Scales and Jacquomo Monk},
url = {https://imbbc.hcmr.gr/wp-content/uploads/2022/11/2022-Magneville-Remote-Sens-Ecol-Conserv-73.pdf
https://onlinelibrary.wiley.com/doi/10.1002/rse2.311},
doi = {10.1002/rse2.311},
issn = {2056-3485, 2056-3485},
year = {2022},
date = {2022-11-04},
urldate = {2022-11-04},
journal = {Remote Sensing in Ecology and Conservation},
pages = {rse2.311},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Skouradakis, Grigorios; Dounas, Costas; Androulakis, Dimitrios N; Papadaki, Maria; Koulouri, Panayota; Pavlidis, Michail
A Study of Arca noae (Linnaeus, 1758) in Elounda Bay, Crete, Eastern Mediterranean Journal Article
In: Journal of Marine Science and Engineering, vol. 10, no. 5, pp. 673, 2022, ISSN: 2077-1312.
@article{skouradakis_study_2022,
title = {A Study of Arca noae (Linnaeus, 1758) in Elounda Bay, Crete, Eastern Mediterranean},
author = {Grigorios Skouradakis and Costas Dounas and Dimitrios N Androulakis and Maria Papadaki and Panayota Koulouri and Michail Pavlidis},
url = {https://imbbc.hcmr.gr/wp-content/uploads/2022/07/2022-Skouradakis-jmse-38.pdf
https://www.mdpi.com/2077-1312/10/5/673},
doi = {10.3390/jmse10050673},
issn = {2077-1312},
year = {2022},
date = {2022-05-01},
urldate = {2022-07-29},
journal = {Journal of Marine Science and Engineering},
volume = {10},
number = {5},
pages = {673},
abstract = {There is growing interest about marine bivalve aquaculture globally, not only for the market value of the goods produced, but also for the socio-economic and environmental services that this activity can provide. Arca noae is an endemic Mediterranean bivalve of commercial value, whose previously undescribed population in Elounda Bay we studied in terms of its structure and reproduction, while constructing a timeseries of the basic environmental parameters of the bay, thus, gaining fundamental knowledge for the potential future exploitation of the species in the area. We found a variable spatial distribution of arks in the study area, with local high peaks in the population density, consisting of smaller size individuals, in comparison to other areas. Because of protandry of the species, human pressure on this population could have a strong negative effect, by targeting the limited numbers of large females in the study area. The reproduction pattern was similar to the reports from other Mediterranean locations. The abiotic conditions in Elounda Bay differed from those in the adjacent coastal zone, confirming that the Bay is a unique semi-enclosed marine area in the island of Crete.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
There is growing interest about marine bivalve aquaculture globally, not only for the market value of the goods produced, but also for the socio-economic and environmental services that this activity can provide. Arca noae is an endemic Mediterranean bivalve of commercial value, whose previously undescribed population in Elounda Bay we studied in terms of its structure and reproduction, while constructing a timeseries of the basic environmental parameters of the bay, thus, gaining fundamental knowledge for the potential future exploitation of the species in the area. We found a variable spatial distribution of arks in the study area, with local high peaks in the population density, consisting of smaller size individuals, in comparison to other areas. Because of protandry of the species, human pressure on this population could have a strong negative effect, by targeting the limited numbers of large females in the study area. The reproduction pattern was similar to the reports from other Mediterranean locations. The abiotic conditions in Elounda Bay differed from those in the adjacent coastal zone, confirming that the Bay is a unique semi-enclosed marine area in the island of Crete.
Escalas, Arthur; Auguet, Jean-Christophe; Avouac, Amandine; Belmaker, Jonathan; Dailianis, Thanos; Kiflawi, Moshe; Pickholtz, Renanel; Skouradakis, Grigorios; Villéger, Sébastien
Shift and homogenization of gut microbiome during invasion in marine fishes Journal Article
In: Animal Microbiome, vol. 4, no. 1, pp. 37, 2022, ISSN: 2524-4671.
@article{escalas_shift_2022,
title = {Shift and homogenization of gut microbiome during invasion in marine fishes},
author = {Arthur Escalas and Jean-Christophe Auguet and Amandine Avouac and Jonathan Belmaker and Thanos Dailianis and Moshe Kiflawi and Renanel Pickholtz and Grigorios Skouradakis and Sébastien Villéger},
url = {https://imbbc.hcmr.gr/wp-content/uploads/2022/07/2022-Escalas-AniMicro-48.pdf
https://animalmicrobiome.biomedcentral.com/articles/10.1186/s42523-022-00181-0},
doi = {10.1186/s42523-022-00181-0},
issn = {2524-4671},
year = {2022},
date = {2022-01-01},
urldate = {2022-07-29},
journal = {Animal Microbiome},
volume = {4},
number = {1},
pages = {37},
abstract = {Abstract
Biological invasion is one of the main components of global changes in aquatic ecosystems. Unraveling how establishment in novel environments affects key biological features of animals is a key step towards understanding invasion. Gut microbiome of herbivorous animals is important for host health but has been scarcely assessed in invasive species. Here, we characterized the gut microbiome of two invasive marine herbivorous fishes (
Siganus rivulatus
and
Siganus luridus
) in their native (Red Sea) and invaded (Mediterranean Sea) ranges. The taxonomic and phylogenetic diversity of the microbiome increased as the fishes move away from the native range and its structure became increasingly different from the native microbiome. These shifts resulted in homogenization of the microbiome in the invaded range, within and between the two species. The shift in microbial diversity was associated with changes in its functions related with the metabolism of short-chain fatty acids. Altogether, our results suggest that the environmental conditions encountered by Siganidae during their expansion in Mediterranean ecosystems strongly modifies the composition of their gut microbiome along with its putative functions. Further studies should pursue to identify the precise determinants of these modifications (e.g. changes in host diet or behavior, genetic differentiation) and whether they participate in the ecological success of these species.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Abstract
Biological invasion is one of the main components of global changes in aquatic ecosystems. Unraveling how establishment in novel environments affects key biological features of animals is a key step towards understanding invasion. Gut microbiome of herbivorous animals is important for host health but has been scarcely assessed in invasive species. Here, we characterized the gut microbiome of two invasive marine herbivorous fishes (
Siganus rivulatus
and
Siganus luridus
) in their native (Red Sea) and invaded (Mediterranean Sea) ranges. The taxonomic and phylogenetic diversity of the microbiome increased as the fishes move away from the native range and its structure became increasingly different from the native microbiome. These shifts resulted in homogenization of the microbiome in the invaded range, within and between the two species. The shift in microbial diversity was associated with changes in its functions related with the metabolism of short-chain fatty acids. Altogether, our results suggest that the environmental conditions encountered by Siganidae during their expansion in Mediterranean ecosystems strongly modifies the composition of their gut microbiome along with its putative functions. Further studies should pursue to identify the precise determinants of these modifications (e.g. changes in host diet or behavior, genetic differentiation) and whether they participate in the ecological success of these species.
Biological invasion is one of the main components of global changes in aquatic ecosystems. Unraveling how establishment in novel environments affects key biological features of animals is a key step towards understanding invasion. Gut microbiome of herbivorous animals is important for host health but has been scarcely assessed in invasive species. Here, we characterized the gut microbiome of two invasive marine herbivorous fishes (
Siganus rivulatus
and
Siganus luridus
) in their native (Red Sea) and invaded (Mediterranean Sea) ranges. The taxonomic and phylogenetic diversity of the microbiome increased as the fishes move away from the native range and its structure became increasingly different from the native microbiome. These shifts resulted in homogenization of the microbiome in the invaded range, within and between the two species. The shift in microbial diversity was associated with changes in its functions related with the metabolism of short-chain fatty acids. Altogether, our results suggest that the environmental conditions encountered by Siganidae during their expansion in Mediterranean ecosystems strongly modifies the composition of their gut microbiome along with its putative functions. Further studies should pursue to identify the precise determinants of these modifications (e.g. changes in host diet or behavior, genetic differentiation) and whether they participate in the ecological success of these species.
2021
Samaras, Athanasios; Dimitroglou, Arkadios; Kollias, Spyridon; Skouradakis, Grigorios; Papadakis, Ioannis E; Pavlidis, Michail
Cortisol concentration in scales is a valid indicator for the assessment of chronic stress in European sea bass, Dicentrarchus labrax L Journal Article
In: Aquaculture, vol. 545, pp. 737257, 2021, ISSN: 00448486, (MULTI).
@article{samaras_cortisol_2021,
title = {Cortisol concentration in scales is a valid indicator for the assessment of chronic stress in European sea bass, Dicentrarchus labrax L},
author = {Athanasios Samaras and Arkadios Dimitroglou and Spyridon Kollias and Grigorios Skouradakis and Ioannis E Papadakis and Michail Pavlidis},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0044848621009200},
doi = {10.1016/j.aquaculture.2021.737257},
issn = {00448486},
year = {2021},
date = {2021-01-01},
urldate = {2022-01-17},
journal = {Aquaculture},
volume = {545},
pages = {737257},
note = {MULTI},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2020
Katsanevakis, Stelios; Poursanidis, Dimitris; Hoffman, Razy; Rizgalla, Jamila; Rothman, Shevy Bat-Sheva; Levitt-Barmats, Ya’arit; Hadjioannou, Louis; Trkov, Domen; Garmendia, Joxe Mikel; Rizzo, Miraine; Bartolo, Angela G; Bariche, Michel; Tomas, Fiona; Kleitou, Periklis; Schembri, Patrick J; Kletou, Demetris; Tiralongo, Francesco; Pergent, Christine; Pergent, Gérard; Azzurro, Ernesto; Bilecenoglu, Murat; Lodola, Alice; Ballesteros, Enric; Gerovasileiou, Vasilis; Verlaque, Marc; Occhipinti-Ambrogi, Anna; Kytinou, Eleni; Dailianis, Thanos; Ferrario, Jasmine; Crocetta, Fabio; Jimenez, Carlos; Evans, Julian; Ragkousis, Michail; Lipej, Lovrenc; Borg, Joseph A; Dimitriadis, Charalampos; Chatzigeorgiou, Giorgos; Albano, Paolo G; Kalogirou, Stefanos; Bazairi, Hocein; Espinosa, Free; Souissi, Jamila Ben; Tsiamis, Konstantinos; Badalamenti, Fabio; Langeneck, Joachim; Noel, Pierre; Deidun, Alan; Marchini, Agnese; Skouradakis, Grigorios; Royo, Laura; Sini, Maria; Bianchi, Carlo Nike; Sghaier, Yassine-Ramzi; Ghanem, Raouia; Doumpas, Nikos; Zaouali, Jeanne; Tsirintanis, Konstantinos; Papadakis, Orestis; Morri, Carla; Çinar, Melih Ertan; Terrados, Jorge; Insacco, Gianni; Zava, Bruno; Soufi-Kechaou, Emna; Piazzi, Luigi; Amor, Khadija Ounifi Ben; Andriotis, Emmanouil; Gambi, Maria Cristina; Amor, Mohamed Mourad Ben; Garrabou, Joaquim; Linares, Cristina; Fortič, Ana; Digenis, Markos; Cebrian, Emma; Fourt, Maïa; Zotou, Maria; Castriota, Luca; Martino, Vincenzo Di; Rosso, Antonietta; Pipitone, Carlo; Falautano, Manuela; García, María; Zakhama-Sraieb, Rym; Khamassi, Faten; Mannino, Anna Maria; Ktari, Mohamed Hédi; Kosma, Ioanna; Rifi, Mouna; Karachle, Paraskevi K; Yapıcı, Sercan; Bos, Arthur R; Balistreri, Paolo; Ramos-Esplá, Alfonso A; Tempesti, Jonathan; Inglese, Omar; Giovos, Ioannis; Damalas, Dimitrios; Benhissoune, Said; Huseyinoglu, Mehmet Fatih; Rjiba-Bahri, Wafa; Santamaría, Jorge; Orlando-Bonaca, Martina; Muñoz, Andrés Izquierdo; Stamouli, Caterina; Montefalcone, Monica; Cerim, Hasan; Golo, Raül; Tsioli, Soultana; Orfanidis, Sotiris; Michailidis, Nikolas; Gaglioti, Martina; Taşkın, Ergün; Mancuso, Emilio; Žunec, Ante; Cvitković, Ivan; Filiz, Halit; Sanfilippo, Rossana; Siapatis, Apostolos; Mavrič, Borut; Karaa, Sami; Türker, Ali; Monniot, Françoise; Verdura, Jana; Ouamari, Najib El; Selfati, Mohamed; Zenetos, Argyro
Unpublished Mediterranean records of marine alien and cryptogenic species Journal Article
In: BioInvasions Records, vol. 9, no. 2, pp. 165–182, 2020.
@article{katsanevakis_unpublished_2020,
title = {Unpublished Mediterranean records of marine alien and cryptogenic species},
author = {Stelios Katsanevakis and Dimitris Poursanidis and Razy Hoffman and Jamila Rizgalla and Shevy Bat-Sheva Rothman and Ya’arit Levitt-Barmats and Louis Hadjioannou and Domen Trkov and Joxe Mikel Garmendia and Miraine Rizzo and Angela G Bartolo and Michel Bariche and Fiona Tomas and Periklis Kleitou and Patrick J Schembri and Demetris Kletou and Francesco Tiralongo and Christine Pergent and Gérard Pergent and Ernesto Azzurro and Murat Bilecenoglu and Alice Lodola and Enric Ballesteros and Vasilis Gerovasileiou and Marc Verlaque and Anna Occhipinti-Ambrogi and Eleni Kytinou and Thanos Dailianis and Jasmine Ferrario and Fabio Crocetta and Carlos Jimenez and Julian Evans and Michail Ragkousis and Lovrenc Lipej and Joseph A Borg and Charalampos Dimitriadis and Giorgos Chatzigeorgiou and Paolo G Albano and Stefanos Kalogirou and Hocein Bazairi and Free Espinosa and Jamila Ben Souissi and Konstantinos Tsiamis and Fabio Badalamenti and Joachim Langeneck and Pierre Noel and Alan Deidun and Agnese Marchini and Grigorios Skouradakis and Laura Royo and Maria Sini and Carlo Nike Bianchi and Yassine-Ramzi Sghaier and Raouia Ghanem and Nikos Doumpas and Jeanne Zaouali and Konstantinos Tsirintanis and Orestis Papadakis and Carla Morri and Melih Ertan Çinar and Jorge Terrados and Gianni Insacco and Bruno Zava and Emna Soufi-Kechaou and Luigi Piazzi and Khadija Ounifi Ben Amor and Emmanouil Andriotis and Maria Cristina Gambi and Mohamed Mourad Ben Amor and Joaquim Garrabou and Cristina Linares and Ana Fortič and Markos Digenis and Emma Cebrian and Maïa Fourt and Maria Zotou and Luca Castriota and Vincenzo Di Martino and Antonietta Rosso and Carlo Pipitone and Manuela Falautano and María García and Rym Zakhama-Sraieb and Faten Khamassi and Anna Maria Mannino and Mohamed Hédi Ktari and Ioanna Kosma and Mouna Rifi and Paraskevi K Karachle and Sercan Yapıcı and Arthur R Bos and Paolo Balistreri and Alfonso A Ramos-Esplá and Jonathan Tempesti and Omar Inglese and Ioannis Giovos and Dimitrios Damalas and Said Benhissoune and Mehmet Fatih Huseyinoglu and Wafa Rjiba-Bahri and Jorge Santamaría and Martina Orlando-Bonaca and Andrés Izquierdo Muñoz and Caterina Stamouli and Monica Montefalcone and Hasan Cerim and Raül Golo and Soultana Tsioli and Sotiris Orfanidis and Nikolas Michailidis and Martina Gaglioti and Ergün Taşkın and Emilio Mancuso and Ante Žunec and Ivan Cvitković and Halit Filiz and Rossana Sanfilippo and Apostolos Siapatis and Borut Mavrič and Sami Karaa and Ali Türker and Françoise Monniot and Jana Verdura and Najib El Ouamari and Mohamed Selfati and Argyro Zenetos},
url = {https://www.reabic.net/journals/bir/2020/2/BIR_2020_Katsanevakis_etal.pdf},
doi = {10.3391/bir.2020.9.2.01},
year = {2020},
date = {2020-04-01},
journal = {BioInvasions Records},
volume = {9},
number = {2},
pages = {165--182},
abstract = {Good datasets of geo-referenced records of alien species are a prerequisite for assessing the spatio-temporal dynamics of biological invasions, their invasive potential, and the magnitude of their impacts. However, with the exception of first records on a country level or wider regions, observations of species presence tend to remain unpublished, buried in scattered repositories or in the personal databases of experts. Through an initiative to collect, harmonize and make such unpublished data for marine alien and cryptogenic species in the Mediterranean Sea available, a large dataset comprising 5376 records was created. It includes records of 239 alien or cryptogenic taxa (192 Animalia, 24 Plantae, 23 Chromista) from 19 countries surrounding the Mediterranean Sea. In terms of records, the most reported Phyla in descending order were Chordata, Mollusca, Chlorophyta, Arthropoda, and Rhodophyta. The most recorded species was Caulerpa cylindracea, followed by Siganus luridus, Magallana sp. (cf. gigas or angulata) and Pterois miles. The dataset includes records from 1972 to 2020, with the highest number of records observed in 2018. Among the records of the dataset, Dictyota acutiloba is a first record for the Mediterranean Sea. Nine first country records are also included: the alga Caulerpa taxifolia var. distichophylla, the cube boxfish Ostracion cubicus, and the cleaner shrimp Urocaridella pulchella from Israel; the sponge Paraleucilla magna from Libya and Slovenia; the lumpfish Cyclopterus lumpus from Cyprus; the bryozoan Celleporaria vermiformis and the polychaetes Prionospio depauperata and Notomastus aberans from Malta.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Good datasets of geo-referenced records of alien species are a prerequisite for assessing the spatio-temporal dynamics of biological invasions, their invasive potential, and the magnitude of their impacts. However, with the exception of first records on a country level or wider regions, observations of species presence tend to remain unpublished, buried in scattered repositories or in the personal databases of experts. Through an initiative to collect, harmonize and make such unpublished data for marine alien and cryptogenic species in the Mediterranean Sea available, a large dataset comprising 5376 records was created. It includes records of 239 alien or cryptogenic taxa (192 Animalia, 24 Plantae, 23 Chromista) from 19 countries surrounding the Mediterranean Sea. In terms of records, the most reported Phyla in descending order were Chordata, Mollusca, Chlorophyta, Arthropoda, and Rhodophyta. The most recorded species was Caulerpa cylindracea, followed by Siganus luridus, Magallana sp. (cf. gigas or angulata) and Pterois miles. The dataset includes records from 1972 to 2020, with the highest number of records observed in 2018. Among the records of the dataset, Dictyota acutiloba is a first record for the Mediterranean Sea. Nine first country records are also included: the alga Caulerpa taxifolia var. distichophylla, the cube boxfish Ostracion cubicus, and the cleaner shrimp Urocaridella pulchella from Israel; the sponge Paraleucilla magna from Libya and Slovenia; the lumpfish Cyclopterus lumpus from Cyprus; the bryozoan Celleporaria vermiformis and the polychaetes Prionospio depauperata and Notomastus aberans from Malta.