Orestis Papadakis, I. Mamoutos, Alexis Ramfos, G. Catanese, Evangelos Papadimitriou, J. THEODOROU A., C. Batargias, Charikleia Papaioannou, Maria Kamilari, E. Tragou, V. Zervakis, S. Katsanevakis
Since the first confirmed records of mass mortality events (MME) in the Aegean Sea in 2018, Pinna nobilis populations in Greek seas have been decimated. To bolster recovery efforts, this study aimed to assess the status of fan mussel populations in the Aegean and Ionian seas and investigate potential recolonization through natural recruitment. From May 2022 to May 2023, 163 independent underwater visual surveys were conducted across various locations and depths along the Greek coastline. A total of 4348 P. nobilis individuals was recorded, of which 87.3% were found dead and 12.7% were alive. The sole surviving fan mussel populations were located in the semi-enclosed gulfs of Amvrakikos in the Ionian Sea and of Kalloni in the Aegean Sea, with estimated recent mortality rates (excluding potential poaching) of 7.7% and 6.3%, respectively. To track potential new recruitment, a network of larvae collectors was deployed in multiple locations. Additionally, an ocean circulation model (OCM) was developed to predict the export and fate of larvae from the surviving populations in the Marmara Sea towards the Aegean Sea. Beyond the MME, this study identified several other threats, which significantly endanger fan mussel survival. The findings of this study underscore the urgent need to implement protection measures and restoration actions to enhance the chances of P. nobilis survival and recovery in the Greek seas.
{"title":"Status, distribution, and threats of the last surviving fan mussel populations in Greece","authors":"Orestis Papadakis, I. Mamoutos, Alexis Ramfos, G. Catanese, Evangelos Papadimitriou, J. THEODOROU A., C. Batargias, Charikleia Papaioannou, Maria Kamilari, E. Tragou, V. Zervakis, S. Katsanevakis","doi":"10.12681/mms.35384","DOIUrl":"https://doi.org/10.12681/mms.35384","url":null,"abstract":"Since the first confirmed records of mass mortality events (MME) in the Aegean Sea in 2018, Pinna nobilis populations in Greek seas have been decimated. To bolster recovery efforts, this study aimed to assess the status of fan mussel populations in the Aegean and Ionian seas and investigate potential recolonization through natural recruitment. From May 2022 to May 2023, 163 independent underwater visual surveys were conducted across various locations and depths along the Greek coastline. A total of 4348 P. nobilis individuals was recorded, of which 87.3% were found dead and 12.7% were alive. The sole surviving fan mussel populations were located in the semi-enclosed gulfs of Amvrakikos in the Ionian Sea and of Kalloni in the Aegean Sea, with estimated recent mortality rates (excluding potential poaching) of 7.7% and 6.3%, respectively. To track potential new recruitment, a network of larvae collectors was deployed in multiple locations. Additionally, an ocean circulation model (OCM) was developed to predict the export and fate of larvae from the surviving populations in the Marmara Sea towards the Aegean Sea. Beyond the MME, this study identified several other threats, which significantly endanger fan mussel survival. The findings of this study underscore the urgent need to implement protection measures and restoration actions to enhance the chances of P. nobilis survival and recovery in the Greek seas.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"29 7","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139004715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joseba Aguilo-Arce, J. FERRAGUT F., Lydia Png-Gonzalez, Aina Carbonell, María Capa
A survey of the invasive pearl oyster Pinctada radiata along the Balearic Archipelago was conducted based on the COI mitochondrial marker. Results confirmed the identity of the specimens as P. radiata. The Balearic populations are certainly of Indo-Pacific origin but not from the Persian Gulf nor from other introduced populations in the eastern or central Mediterranean, therefore the precise origin remains to be discovered. Despite the small number of samples from the Persian Gulf compared to the Mediterranean, the haplotype diversity is higher in the native populations compared to the non-native.
根据 COI 线粒体标记对巴利阿里群岛沿岸的入侵珍珠贝 Pinctada radiata 进行了调查。结果证实了这些标本是 P. radiata。巴利阿里群岛的种群肯定来自印度洋-太平洋，但不是来自波斯湾，也不是来自地中海东部或中部的其他引进种群，因此其确切的起源仍有待发现。尽管与地中海相比，波斯湾的样本数量较少，但与非本地种群相比，本地种群的单倍型多样性更高。
{"title":"First genetic survey on the invasive rayed pearl oyster Pinctada radiata (Leach, 1814) populations of the Balearic Islands (Western Mediterranean)","authors":"Joseba Aguilo-Arce, J. FERRAGUT F., Lydia Png-Gonzalez, Aina Carbonell, María Capa","doi":"10.12681/mms.34195","DOIUrl":"https://doi.org/10.12681/mms.34195","url":null,"abstract":"A survey of the invasive pearl oyster Pinctada radiata along the Balearic Archipelago was conducted based on the COI mitochondrial marker. Results confirmed the identity of the specimens as P. radiata. The Balearic populations are certainly of Indo-Pacific origin but not from the Persian Gulf nor from other introduced populations in the eastern or central Mediterranean, therefore the precise origin remains to be discovered. Despite the small number of samples from the Persian Gulf compared to the Mediterranean, the haplotype diversity is higher in the native populations compared to the non-native.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"27 7","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139006487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Guerra-García, Triana Revanales, P. SAENZ-ARIAS, C. Navarro‐Barranco, S. Ruiz-Velasco, María PASTOR-MONTERO, Juan Sempere-Valverde, Sahar Chebaane, Alberto VÉLEZ-RUIZ, G. Martínez-Laiz, Mar SANTOS-SIMÓN, J. Ferrario, A. Marchini, Ola Mohamed Nour, Benoit Gouillieux, A. Hosie, V. Gerovasileiou, Susana Carvalho, P. Balistreri, Benedetto Sirchia, Vincenzo Ruvolo, Emanuele Mancini, A. Bonifazi, J. Tempesti, Francesco Tiralongo, Sara Ignoto, V. Fernandez-Gonzalez, M. Vázquez‐Luis, M. P. Cabezas, M. Ros
Studies of non-indigenous species (NIS) often tend to focus on medium and large-sized taxa with potential for remarkable ecological and/or economic impact, whereas the early detection of small invertebrates is often delayed due to taxonomic challenge, lack of consistent, standardised monitoring efforts and limited funding. This study represents the first records of the marine amphipod Laticorophium baconi (Shoemaker, 1934) in Morocco, Tunisia, Corsica (France), Italy, Greece, Egypt, Saudi Arabia and New Caledonia (France). Furthermore, it reports an expansion of its known distribution in Portugal (earliest and northernmost record for the country and first record for Macaronesia), Spain (earliest record for Atlantic and Mediterranean European waters), and Australia (first record for Indian Ocean). Recreational boating and commercial shipping, mainly through hull fouling and secondarily ballast waters, are proposed as vectors for introduction and secondary spread of L. baconi. The following traits, analysed during the present study, could contribute to its invasive potential: (i) quick and extensive spread of the species worldwide, (ii) high densities in marinas, harbours, hull fouling and other artificial habitats, including aquaculture facilities and floating debris, (iii) high ability for short-term colonisation of empty artificial niches, (iv) diet based on detritus suggesting an opportunistic feeding behaviour, and (v) population survival during seasonal fluctuations in different regions. Taxonomic expertise and scientific collaboration, based on multidisciplinary networks of experts, are crucial for the early detection, distribution updates, and risk assessment of small and overlooked stowaways in marine environments.
{"title":"Quick spreading of the exotic amphipod Laticorophium baconi (Shoemaker, 1934): another small stowaway overlooked?","authors":"J. Guerra-García, Triana Revanales, P. SAENZ-ARIAS, C. Navarro‐Barranco, S. Ruiz-Velasco, María PASTOR-MONTERO, Juan Sempere-Valverde, Sahar Chebaane, Alberto VÉLEZ-RUIZ, G. Martínez-Laiz, Mar SANTOS-SIMÓN, J. Ferrario, A. Marchini, Ola Mohamed Nour, Benoit Gouillieux, A. Hosie, V. Gerovasileiou, Susana Carvalho, P. Balistreri, Benedetto Sirchia, Vincenzo Ruvolo, Emanuele Mancini, A. Bonifazi, J. Tempesti, Francesco Tiralongo, Sara Ignoto, V. Fernandez-Gonzalez, M. Vázquez‐Luis, M. P. Cabezas, M. Ros","doi":"10.12681/mms.35817","DOIUrl":"https://doi.org/10.12681/mms.35817","url":null,"abstract":"Studies of non-indigenous species (NIS) often tend to focus on medium and large-sized taxa with potential for remarkable ecological and/or economic impact, whereas the early detection of small invertebrates is often delayed due to taxonomic challenge, lack of consistent, standardised monitoring efforts and limited funding. This study represents the first records of the marine amphipod Laticorophium baconi (Shoemaker, 1934) in Morocco, Tunisia, Corsica (France), Italy, Greece, Egypt, Saudi Arabia and New Caledonia (France). Furthermore, it reports an expansion of its known distribution in Portugal (earliest and northernmost record for the country and first record for Macaronesia), Spain (earliest record for Atlantic and Mediterranean European waters), and Australia (first record for Indian Ocean). Recreational boating and commercial shipping, mainly through hull fouling and secondarily ballast waters, are proposed as vectors for introduction and secondary spread of L. baconi. The following traits, analysed during the present study, could contribute to its invasive potential: (i) quick and extensive spread of the species worldwide, (ii) high densities in marinas, harbours, hull fouling and other artificial habitats, including aquaculture facilities and floating debris, (iii) high ability for short-term colonisation of empty artificial niches, (iv) diet based on detritus suggesting an opportunistic feeding behaviour, and (v) population survival during seasonal fluctuations in different regions. Taxonomic expertise and scientific collaboration, based on multidisciplinary networks of experts, are crucial for the early detection, distribution updates, and risk assessment of small and overlooked stowaways in marine environments.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"9 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139009136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Langeneck, R. Bakiu, N. Chalari, Georgios Chatzigeorgiou, F. Crocetta, Servet Ahmet Doğdu, Sherif Durmishaj, B. GALIL S., J. García-Charton, Anil Gülşahin, R. Hoffman, A. Leone, M. Lezzi, Alessia Logrieco, Emanuele Mancini, E. Minareci, S. Petović, Pasquale Ricci, V. Orenes-Salazar, E. Sperone, A. Spinelli, N. Stern, Aviyam Tagar, Valentina Tanduo, E. Taşkın, Francesco Tiralongo, E. Trainito, C. Turan, S. Yapici, Iasonas Zafeiridis, A. Zenetos
This collective article presents new information about 15 introduced taxa belonging to five phyla: one Rhodophyta, one Chlorophyta, one Mollusca, one Annelida, two Arthropoda, and nine Chordata (one Ascidiacea and eight Osteichthyes). The records refer to eight Mediterranean countries and extend from the Alboran Sea to the Levantine Sea as follows: Spain: first record of the African hind Cephalopholis taeniops for the Alboran Sea, and a further record of the Monrovia surgeonfish Acanthurus monroviae, extending its distribution northwards in the Western Mediterranean. Italy: an additional record of the squat lobster Scyllarus subarctus based on its nisto stage, new records of the lionfish Pterois miles in the north-western Ionian Sea, first records of the bivalve Fulvia fragilis for the Italian Adriatic coast, and a record of the amphipod Ptilohyale littoralis in the northern Adriatic Sea, also representing the first report for the Mediterranean Sea. Montenegro: first record of the non indigenous ascidian Ciona robusta. Albania: first record of the red cornetfish Fistularia petimba. Greece: first record of the cryptogenic polychaete Alitta succinea in association with ship fouling, suggesting the possibility of a non-indigenous origin of Mediterranean populations of this species, and first record of the Seychelles dragonet Synchiropus sechellensis for the Saronikos Gulf. Türkiye: first record of the red alga Womersleyella setacea, report of an abundant population of the Indian twospot cardinalfish Cheilodipterus novemstriatus in the Turkish Aegean Sea, and first record of Synodus randalli, also corresponding to the first report for the Mediterranean Sea. Syria: first record of the blenny Istiblennius cf. meleagris. Israel: report of an algal bloom of the green alga Codium parvulum, and first record of Synchiropus sechellensis.
{"title":"New records of introduced species in the Mediterranean Sea (November 2023)","authors":"J. Langeneck, R. Bakiu, N. Chalari, Georgios Chatzigeorgiou, F. Crocetta, Servet Ahmet Doğdu, Sherif Durmishaj, B. GALIL S., J. García-Charton, Anil Gülşahin, R. Hoffman, A. Leone, M. Lezzi, Alessia Logrieco, Emanuele Mancini, E. Minareci, S. Petović, Pasquale Ricci, V. Orenes-Salazar, E. Sperone, A. Spinelli, N. Stern, Aviyam Tagar, Valentina Tanduo, E. Taşkın, Francesco Tiralongo, E. Trainito, C. Turan, S. Yapici, Iasonas Zafeiridis, A. Zenetos","doi":"10.12681/mms.35840","DOIUrl":"https://doi.org/10.12681/mms.35840","url":null,"abstract":"This collective article presents new information about 15 introduced taxa belonging to five phyla: one Rhodophyta, one Chlorophyta, one Mollusca, one Annelida, two Arthropoda, and nine Chordata (one Ascidiacea and eight Osteichthyes). The records refer to eight Mediterranean countries and extend from the Alboran Sea to the Levantine Sea as follows: Spain: first record of the African hind Cephalopholis taeniops for the Alboran Sea, and a further record of the Monrovia surgeonfish Acanthurus monroviae, extending its distribution northwards in the Western Mediterranean. Italy: an additional record of the squat lobster Scyllarus subarctus based on its nisto stage, new records of the lionfish Pterois miles in the north-western Ionian Sea, first records of the bivalve Fulvia fragilis for the Italian Adriatic coast, and a record of the amphipod Ptilohyale littoralis in the northern Adriatic Sea, also representing the first report for the Mediterranean Sea. Montenegro: first record of the non indigenous ascidian Ciona robusta. Albania: first record of the red cornetfish Fistularia petimba. Greece: first record of the cryptogenic polychaete Alitta succinea in association with ship fouling, suggesting the possibility of a non-indigenous origin of Mediterranean populations of this species, and first record of the Seychelles dragonet Synchiropus sechellensis for the Saronikos Gulf. Türkiye: first record of the red alga Womersleyella setacea, report of an abundant population of the Indian twospot cardinalfish Cheilodipterus novemstriatus in the Turkish Aegean Sea, and first record of Synodus randalli, also corresponding to the first report for the Mediterranean Sea. Syria: first record of the blenny Istiblennius cf. meleagris. Israel: report of an algal bloom of the green alga Codium parvulum, and first record of Synchiropus sechellensis.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"228 ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139241645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Grancagnolo, C. Cattano, F. Quattrocchi, Marco Milazzo
Shallow and coastal aggregations of batoids are poorly documented in the Mediterranean Sea, despite being likely threatened by multiple anthropogenic pressures. We report the first observations of a potential summer reproductive aggregation of the common stingray (Dasyatis pastinaca). The recurrent presence in previous years of several pregnant females, a mature male and a female with fresh bite wounds was recorded in shallow waters by recreational scuba divers and scientists in Scilla Bay (Strait of Messina, Italy), a location with unique oceanographic features in the Central Mediterranean Sea. These observations suggest that the area could be used as a parturition and mating site in early summer, and this is significant for the conservation of this Vulnerable species.
{"title":"Preliminary evidence of a potential reproductive aggregation area of the common stingray Dasyatis pastinaca (Linnaeus, 1758) (Chondrichthyes – Dasyatidae) in the Central Mediterranean Sea","authors":"D. Grancagnolo, C. Cattano, F. Quattrocchi, Marco Milazzo","doi":"10.12681/mms.34889","DOIUrl":"https://doi.org/10.12681/mms.34889","url":null,"abstract":"Shallow and coastal aggregations of batoids are poorly documented in the Mediterranean Sea, despite being likely threatened by multiple anthropogenic pressures. We report the first observations of a potential summer reproductive aggregation of the common stingray (Dasyatis pastinaca). The recurrent presence in previous years of several pregnant females, a mature male and a female with fresh bite wounds was recorded in shallow waters by recreational scuba divers and scientists in Scilla Bay (Strait of Messina, Italy), a location with unique oceanographic features in the Central Mediterranean Sea. These observations suggest that the area could be used as a parturition and mating site in early summer, and this is significant for the conservation of this Vulnerable species.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"41 7","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139254022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Kondylatos, Konstantinos Kalaentzis, Eirini Gratsia, Dimitrios Mavrouleas, Panagiotis Kasapidis, K. Tsiamis, Dimitris Klaoudatos
The first record of the tropical green seaweed Halimeda incrassata (Bryopsidales, Chlorophyta) in the Eastern Mediterranean Sea is presented, based on several thalli found in the stomach of a silver-cheeked toadfish (Lagocephalus sceleratus), collected off Plimmiri beach, Rhodes, Greece. Species identification was based on morphological and molecular identification using the tufA gene as a molecular marker. The finding comes 10 years after a report on the species in Mallorca (Western Mediterranean Sea), where H. incrassata has spread rapidly. The pathway of its introduction in the Eastern basin is unknown, although shipping or the aquarium trade could be involved in this new introduction. Further studies are necessary for visual documentation of the infested areas around Rhodes and assessment of its possible spread in the following years.
{"title":"Halimeda incrassata (Bryopsidales, Chlorophyta) in Rhodes, Greece, Eastern Mediterranean","authors":"G. Kondylatos, Konstantinos Kalaentzis, Eirini Gratsia, Dimitrios Mavrouleas, Panagiotis Kasapidis, K. Tsiamis, Dimitris Klaoudatos","doi":"10.12681/mms.35435","DOIUrl":"https://doi.org/10.12681/mms.35435","url":null,"abstract":"The first record of the tropical green seaweed Halimeda incrassata (Bryopsidales, Chlorophyta) in the Eastern Mediterranean Sea is presented, based on several thalli found in the stomach of a silver-cheeked toadfish (Lagocephalus sceleratus), collected off Plimmiri beach, Rhodes, Greece. Species identification was based on morphological and molecular identification using the tufA gene as a molecular marker. The finding comes 10 years after a report on the species in Mallorca (Western Mediterranean Sea), where H. incrassata has spread rapidly. The pathway of its introduction in the Eastern basin is unknown, although shipping or the aquarium trade could be involved in this new introduction. Further studies are necessary for visual documentation of the infested areas around Rhodes and assessment of its possible spread in the following years.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"39 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139251861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Bramanti, Elisabetta Manea, Bruna Giordano, Tristan Estaque, O. Bianchimani, Justine Richaume, B. Mérigot, Quentin Schull, Stéphane Sartoretto, Joaquim Garrabou, K. Guizien
Climate change poses a significant threat to coastal areas, marked by the increasing intensity and frequency of marine heat waves observed in various ecosystems around the world. Over the last 25 years, a vast number of Mediterranean populations of the red gorgonian Paramuricea clavata have been impacted by marine heatwaves. The last mass mortality occurred during the summer of 2022 in the Western Mediterranean Sea, affecting mostly shallow populations (down to 30 m depth). Here we provide an assessment of the health status of mesophotic P. clavata populations down to 90 m depth to investigate a depth refuge hypothesis. Results show that the impact of marine heat waves decreases with depth, with a significant drop in mortality below 40 m depth. These observations support the hypothesis of a depth refuge from marine heat waves that may allow, at least temporarily, the maintenance of P. clavata in the Western Mediterranean Sea. The present study strongly advocates for further investigations and monitoring of the mesophotic zone to chart potential areas that could serve as deep refuge for gorgonians.
气候变化对沿海地区构成了重大威胁，在全球各种生态系统中观察到的海洋热浪的强度和频率都在不断增加。在过去的 25 年里，地中海地区的大量红芡实（Paramuricea clavata）种群都受到了海洋热浪的影响。最近一次大规模死亡发生在 2022 年夏季的西地中海，受影响的主要是浅海种群（最深 30 米）。在此，我们评估了水深达 90 米的中浅海 P. clavata 种群的健康状况，以研究深度避难所假说。结果表明，海洋热浪的影响随着深度的增加而减小，深度低于 40 米时死亡率显著下降。这些观察结果支持海洋热浪深度避难所的假说，该避难所至少可以暂时维持西地中海中 P. clavata 的生存。本研究强烈建议进一步调查和监测中深海区，以绘制可作为蛙龙鱼深海避难所的潜在区域图。
{"title":"The deep vault: a temporary refuge for temperate gorgonian forests facing marine heat waves","authors":"L. Bramanti, Elisabetta Manea, Bruna Giordano, Tristan Estaque, O. Bianchimani, Justine Richaume, B. Mérigot, Quentin Schull, Stéphane Sartoretto, Joaquim Garrabou, K. Guizien","doi":"10.12681/mms.35564","DOIUrl":"https://doi.org/10.12681/mms.35564","url":null,"abstract":"Climate change poses a significant threat to coastal areas, marked by the increasing intensity and frequency of marine heat waves observed in various ecosystems around the world. Over the last 25 years, a vast number of Mediterranean populations of the red gorgonian Paramuricea clavata have been impacted by marine heatwaves. The last mass mortality occurred during the summer of 2022 in the Western Mediterranean Sea, affecting mostly shallow populations (down to 30 m depth). Here we provide an assessment of the health status of mesophotic P. clavata populations down to 90 m depth to investigate a depth refuge hypothesis. Results show that the impact of marine heat waves decreases with depth, with a significant drop in mortality below 40 m depth. These observations support the hypothesis of a depth refuge from marine heat waves that may allow, at least temporarily, the maintenance of P. clavata in the Western Mediterranean Sea. The present study strongly advocates for further investigations and monitoring of the mesophotic zone to chart potential areas that could serve as deep refuge for gorgonians.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"28 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139264451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Kondylatos, Konstantinos Perdikaris, Ioannis Kaoukis, Ioannis Patatoukos, M. Corsini-Foka, Alexis Conides, Dimitris Klaoudatos
Trammel net and boat-seine experimental fishing samplings were carried out seasonally, over a rocky-sandy and a Posidonia oceanica habitat respectively, in the coastal waters of Rhodes, south-eastern Aegean Sea, Greece, between 2019 and 2020. Fish catch composition, abundance and biomass were investigated as a contribution to the qualitative and quantitative monitoring of the fish assemblages in the artisanal fishery in this Greek marine region most affected by biological invasion. A total of 56 native and 11 alien fish species were captured. Five invasive species Fistularia commersonii, Pterois miles, Siganus rivulatus, Siganus luridus and Lagocephalus sceleratus were recorded using both fishing gear. In trammel nets, the alien to native fish species ratio was 1:2.87 with eight allochthonous species composing 43% of the total abundance and greatly exceeding native species biomass with the most dominant being F. commersonii, P. miles, S. rivulatus and S. luridus. Boat seine samples were dominated by Spicara smaris and Boops boops, which accounted for 84% and 56% of total abundance and biomass, respectively, while the alien to native fish species ratio was 1:5.1. The 10 Lessepsian fish, i.e., fish that have entered the Mediterranean Sea via the Suez Canal, identified on a Posidonia seabed represented a small proportion of the total abundance (3.4%), while their biomass reached 17% of the total catch, with a prevalence of F. commersonii. Among alien fish on P. oceanica, S. rivulatus exhibited the greatest abundance, followed by F. commersonii, Parupeneus forsskali and S. luridus, with small but not negligible densities of Pteragogus trispilus and Torquigener flavimaculosus. The abundance of Pterois miles over the rocky-sandy habitat was remarkable. Results indicate a transitional shift in fish catch composition with introduced species competing with natives for food and space (i.e. between introduced siganids and Sparisoma cretense, Sarpa salpa, between the recently introduced P. forsskali and mullids, and between introduced P. miles and scorpaenids), further influenced synergistically by environmental and anthropogenic factors. The Total-Standard length and Total weight-Total length relationships and their applications in fisheries data for the allochthonous fish are briefly discussed.
2019 年至 2020 年期间，在希腊爱琴海东南部罗得岛沿岸水域的岩石沙地和 Posidonia oceanica 栖息地，按季节分别进行了桁架网和船式围网试验性捕捞采样。对鱼类的捕获组成、丰度和生物量进行了调查，以促进对这一受生物入侵影响最严重的希腊海洋地区个体渔业中鱼类组合的定性和定量监测。共捕获了 56 种本地鱼类和 11 种外来鱼类。两种渔具都记录到了五种外来入侵物种：Fistularia commersonii、Pterois miles、Siganus rivulatus、Siganus luridus 和 Lagocephalus sceleratus。在三层刺网中，外来鱼种与本地鱼种的比例为 1:2.87，8 种外来鱼种占总丰度的 43%，大大超过本地鱼种的生物量，其中最主要的是 F. commersonii、P. miles、S. rivulatus 和 S. luridus。船围网样本中主要是 Spicara smaris 和 Boops boops，分别占总丰度和生物量的 84% 和 56%，外来鱼种与本地鱼种的比例为 1:5.1。在 Posidonia 海床上发现的 10 种 Lessepsian 鱼类（即通过苏伊士运河进入地中海的鱼类）只占总丰度的一小部分（3.4%），而其生物量则达到总捕获量的 17%，其中以 F. commersonii 为主。在大洋石首鱼上的外来鱼类中，S. rivulatus 的数量最多，其次是 F. commersonii、Parupeneus forsskali 和 S. luridus，Pteragogus trispilus 和 Torquigener flavimaculosus 的数量也很少，但不可忽视。在岩石沙质生境中，Pterois miles 的数量非常可观。结果表明，随着引进物种与本地物种争夺食物和空间，鱼类捕获量的组成发生了过渡性变化（即引进的鮨科鱼类与 Sparisoma cretense、Sarpa salpa 之间，最近引进的 P. forsskali 与鲻科鱼类之间，以及引进的 P. miles 与蝎科鱼类之间），并受到环境和人为因素的协同影响。本文简要讨论了总长-标准长度和总重-总长的关系及其在同源鱼类渔业数据中的应用。
{"title":"Small-scale fishery catch composition in Rhodes (Eastern Mediterranean Sea)","authors":"G. Kondylatos, Konstantinos Perdikaris, Ioannis Kaoukis, Ioannis Patatoukos, M. Corsini-Foka, Alexis Conides, Dimitris Klaoudatos","doi":"10.12681/mms.32418","DOIUrl":"https://doi.org/10.12681/mms.32418","url":null,"abstract":"Trammel net and boat-seine experimental fishing samplings were carried out seasonally, over a rocky-sandy and a Posidonia oceanica habitat respectively, in the coastal waters of Rhodes, south-eastern Aegean Sea, Greece, between 2019 and 2020. Fish catch composition, abundance and biomass were investigated as a contribution to the qualitative and quantitative monitoring of the fish assemblages in the artisanal fishery in this Greek marine region most affected by biological invasion. A total of 56 native and 11 alien fish species were captured. Five invasive species Fistularia commersonii, Pterois miles, Siganus rivulatus, Siganus luridus and Lagocephalus sceleratus were recorded using both fishing gear. In trammel nets, the alien to native fish species ratio was 1:2.87 with eight allochthonous species composing 43% of the total abundance and greatly exceeding native species biomass with the most dominant being F. commersonii, P. miles, S. rivulatus and S. luridus. Boat seine samples were dominated by Spicara smaris and Boops boops, which accounted for 84% and 56% of total abundance and biomass, respectively, while the alien to native fish species ratio was 1:5.1. The 10 Lessepsian fish, i.e., fish that have entered the Mediterranean Sea via the Suez Canal, identified on a Posidonia seabed represented a small proportion of the total abundance (3.4%), while their biomass reached 17% of the total catch, with a prevalence of F. commersonii. Among alien fish on P. oceanica, S. rivulatus exhibited the greatest abundance, followed by F. commersonii, Parupeneus forsskali and S. luridus, with small but not negligible densities of Pteragogus trispilus and Torquigener flavimaculosus. The abundance of Pterois miles over the rocky-sandy habitat was remarkable. Results indicate a transitional shift in fish catch composition with introduced species competing with natives for food and space (i.e. between introduced siganids and Sparisoma cretense, Sarpa salpa, between the recently introduced P. forsskali and mullids, and between introduced P. miles and scorpaenids), further influenced synergistically by environmental and anthropogenic factors. The Total-Standard length and Total weight-Total length relationships and their applications in fisheries data for the allochthonous fish are briefly discussed.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"17 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139310586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EVA SALVATI, CLAUDIO PROVENZANI, ANDREA D'AMBROSI, MARIA GRAZIA FINOIA, ELENA ROMANO, Simonepietro Canese
A widespread population of the coral Dendrophyllia ramea has been revealed southeast of Syracuse (East Sicily, Italy) at around 75 m depth. Dendrophyllia ramea is an arborescent scleractinian coral, classified as “Vulnerable” in the Mediterranean IUCN Red List and listed in Annex B of the Barcelona Convention. It is considered rare because it is seldom recorded on the Mediterranean seabed. In situ observations of two selected colonies were carried out over three months using a custom-made underwater video recording system to increase knowledge about the ecology of the species, specifically its circadian rhythm. The area was also surveyed using a special navigation system integrated into a diver propulsion vehicle to map the colonies’ position and distribution. The rhythms of the opening and closing of Dendrophyllia ramea’s polyps during the day were studied and linked to environmental factors, such as temperature, water flow, and direction. The results show that Dendrophyllia ramea opens and closes its polyps according to its circadian rhythm and water flow in analogy with other anthozoans in different environments. The opening/closing frequency analysis showed that both colonies closed at least once daily with different periodicity; one colony closed on average a few hours earlier. This project gathered important information on D. ramea’s circadian rhythm, which is relevant for improving knowledge about the ecology of this species since it provides insights into its feeding behavior, reproduction seasonality, response to environmental changes, interactions with other species, and conservation needs.
{"title":"In situ observation of circadian rhythm of polyps’ opening and closing of the coral Dendrophyllia ramea (Linnaeus, 1758)","authors":"EVA SALVATI, CLAUDIO PROVENZANI, ANDREA D'AMBROSI, MARIA GRAZIA FINOIA, ELENA ROMANO, Simonepietro Canese","doi":"10.12681/mms.34250","DOIUrl":"https://doi.org/10.12681/mms.34250","url":null,"abstract":"A widespread population of the coral Dendrophyllia ramea has been revealed southeast of Syracuse (East Sicily, Italy) at around 75 m depth. Dendrophyllia ramea is an arborescent scleractinian coral, classified as “Vulnerable” in the Mediterranean IUCN Red List and listed in Annex B of the Barcelona Convention. It is considered rare because it is seldom recorded on the Mediterranean seabed. In situ observations of two selected colonies were carried out over three months using a custom-made underwater video recording system to increase knowledge about the ecology of the species, specifically its circadian rhythm. The area was also surveyed using a special navigation system integrated into a diver propulsion vehicle to map the colonies’ position and distribution. The rhythms of the opening and closing of Dendrophyllia ramea’s polyps during the day were studied and linked to environmental factors, such as temperature, water flow, and direction. The results show that Dendrophyllia ramea opens and closes its polyps according to its circadian rhythm and water flow in analogy with other anthozoans in different environments. The opening/closing frequency analysis showed that both colonies closed at least once daily with different periodicity; one colony closed on average a few hours earlier. This project gathered important information on D. ramea’s circadian rhythm, which is relevant for improving knowledge about the ecology of this species since it provides insights into its feeding behavior, reproduction seasonality, response to environmental changes, interactions with other species, and conservation needs.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136038547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MATHIEU FOULQUIE, STÉPHANE COUPE, NARDO VICENTE, ROBERT BUNET
The noble pen shell Pinna nobilis is an endemic and emblematic giant bivalve whose populations have been recently affected by a mass mortality event (MME), primarily due to the spread of the pathogen Haplosporidium pinnae. Since the beginning of the MME in Spain in 2016, nearly one hundred percent of monitored open sea water populations have been decimated around the Mediterranean Sea. The only refuge areas with living P. nobilis populations were found in coastal lagoons. Today, the Thau lagoon in France is home to a vitally important population of P. nobilis and was thought to be safe from the parasite. Here, we report the first molecular detection of H. pinnae (isolate PN1) in tissue samples of moribund individuals from Thau lagoon.
{"title":"First detection of Pinna nobilis infection by Haplosporidium pinnae in the sanctuary area of Thau lagoon, France","authors":"MATHIEU FOULQUIE, STÉPHANE COUPE, NARDO VICENTE, ROBERT BUNET","doi":"10.12681/mms.32300","DOIUrl":"https://doi.org/10.12681/mms.32300","url":null,"abstract":"The noble pen shell Pinna nobilis is an endemic and emblematic giant bivalve whose populations have been recently affected by a mass mortality event (MME), primarily due to the spread of the pathogen Haplosporidium pinnae. Since the beginning of the MME in Spain in 2016, nearly one hundred percent of monitored open sea water populations have been decimated around the Mediterranean Sea. The only refuge areas with living P. nobilis populations were found in coastal lagoons. Today, the Thau lagoon in France is home to a vitally important population of P. nobilis and was thought to be safe from the parasite. Here, we report the first molecular detection of H. pinnae (isolate PN1) in tissue samples of moribund individuals from Thau lagoon.","PeriodicalId":51128,"journal":{"name":"Mediterranean Marine Science","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134944961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：