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Otolith atlas for marine fishes of the southwestern Atlantic occurring along southern Brazil (28° S-34° S) 西南大西洋沿岸巴西南部(28°S-34°S)海鱼的耳石地图集

Marine and fishery sciences Pub Date : 2023-11-01 DOI: 10.47193/mafis.3712024010101

Manuel Haimovici, Lucas Dos S. Rodrigues, Silvia H. B. Lucato, Marcio De A. Freire, Luciano G. Fischer, Luis G. Cardoso

{"title":"Otolith atlas for marine fishes of the southwestern Atlantic occurring along southern Brazil (28° S-34° S)","authors":"Manuel Haimovici, Lucas Dos S. Rodrigues, Silvia H. B. Lucato, Marcio De A. Freire, Luciano G. Fischer, Luis G. Cardoso","doi":"10.47193/mafis.3712024010101","DOIUrl":"https://doi.org/10.47193/mafis.3712024010101","url":null,"abstract":"Otoliths are acellular apposition structures composed of approximately 90% of calcium carbonate and other inorganic salts, which develop over a protein matrix located in the inner ear of bony fishes playing an essential role in the senses of balance and hearing. These structures grow throughout a fish’s lifetime. Owing to their species-specific shape, otoliths are an important tool for the identification of fish species in the diet of predators when collected from stomachs and, due to their low water content, are helpful for archaeological, paleontological and anthropological studies for its presence in fossilized remains. This atlas is aimed at the identification of abundant or frequent bony fishes otoliths in the diet of predators and in fossilized remains from the continental shelf and upper continental slope of southern Brazil between Santa Marta Grande cape (28° S) and Chuí (34° S) on the border with Uruguay. It includes the otolith description of 136 bony fishes species, including most of the abundant and frequent species in the region. Easy to use graphics are provided to infer fish size based on otolith measurements. Vouchers of different sizes of otolith of all species included in this atlas are deposited and available for consultation at the Demersal Fisheries Resources and Cephalopods Laboratory (IO-FURG).","PeriodicalId":474422,"journal":{"name":"Marine and fishery sciences","volume":"142 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135270949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vanishing splendor: a comprehensive review of the decline in the original fish fauna of Lake Victoria 消失的辉煌:全面检讨在维多利亚湖的原始鱼类动物群的下降

Marine and fishery sciences Pub Date : 2023-10-06 DOI: 10.47193/mafis.3712024010107

Fredrick Juma Syanya, Wilson M. Mathia, Zachary O. Winam

{"title":"Vanishing splendor: a comprehensive review of the decline in the original fish fauna of Lake Victoria","authors":"Fredrick Juma Syanya, Wilson M. Mathia, Zachary O. Winam","doi":"10.47193/mafis.3712024010107","DOIUrl":"https://doi.org/10.47193/mafis.3712024010107","url":null,"abstract":"The presence of the non-native Nile perch (Lates niloticus) in Lake Victoria and the resulting ecological transformations have garnered significant attention from the scientific community. However, details regarding the timing, origin, and purpose of the fish introduction have remained elusive. This paper reviews fish fauna changes in Lake Victoria, investigates causes, and advocates for biodiversity conservation through diversity and sanctuary sites. It examines different historical periods to understand changes and guide effective conservation strategies. The introduction of Nile perch has led to a substantial decline and even extinction of many native fish species, particularly cichlids, resulting in ecological imbalances and economic challenges for local fishing communities. To address these pressing issues, ongoing conservation efforts are being implemented. These initiatives focus on promoting sustainable fishing practices, safeguarding critical habitats, and reintroducing native fish species. Furthermore, cage fish farming is being explored as a potential solution to alleviate pressure on wild populations, as suggested by various authors. Recommendations stemming from this study include conducting virtual population analysis for stock assessments of indigenous species, intensify conservation efforts, diversify fishing practices, expand cage fish farming, increase public awareness and education, and enhance policy and governance frameworks. By implementing these recommendations, there is optimism for the recovery and resilience of indigenous fish species in Lake Victoria, leading to the conservation of biodiversity and the promotion of sustainable livelihoods for local communities.","PeriodicalId":474422,"journal":{"name":"Marine and fishery sciences","volume":"54 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":"135351374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0