Josafá Reis‐Júnior, Leonardo Cruz da Rosa, Kátia Meirelles Felizola Freire
{"title":"巴西东北部对虾渔业兼捕渔获物中的金眼鲷(十足目: Brachyura)的种群结构和繁殖情况","authors":"Josafá Reis‐Júnior, Leonardo Cruz da Rosa, Kátia Meirelles Felizola Freire","doi":"10.1111/azo.12508","DOIUrl":null,"url":null,"abstract":"This study aimed at analysing the population structure and reproductive aspects of <jats:italic>Callinectes ornatus</jats:italic> present in the bycatch of shrimp fisheries off Sergipe (northeastern Brazil), and at comparing the findings with other regions. Samples were obtained monthly from shrimp trawlers based in the Pirambu municipality (11°S–37°W) from May/2015 to May/2016. Each specimen of <jats:italic>C. ornatus</jats:italic> was separated, identified and weighed (TW, total weight, g). Carapace length (CL, mm) and width (CW, not including lateral spines, mm) were measured, and the sex and stage of morphological maturity were identified. A total of 403 females and 427 males of <jats:italic>C. ornatus</jats:italic> were found and analysed. The overall sex ratio did not differ from 1:1. Males were larger and heavier than females. Biometric relations (CL‐CW and TW‐CW) were different between sexes. The size at first morphological maturity (CW<jats:sub>m</jats:sub>) was 38.20 mm for females and 44.00 mm for males. The reproductive and recruitment periods were continuous, with some peaks throughout the year. Despite <jats:italic>C. ornatus</jats:italic> being a frequent species in shrimp bycatch, its exploitation status is still unknown.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Population structure and reproductive aspects of Callinectes ornatus (Decapoda: Brachyura) present in the bycatch of shrimp fisheries in northeastern Brazil\",\"authors\":\"Josafá Reis‐Júnior, Leonardo Cruz da Rosa, Kátia Meirelles Felizola Freire\",\"doi\":\"10.1111/azo.12508\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study aimed at analysing the population structure and reproductive aspects of <jats:italic>Callinectes ornatus</jats:italic> present in the bycatch of shrimp fisheries off Sergipe (northeastern Brazil), and at comparing the findings with other regions. Samples were obtained monthly from shrimp trawlers based in the Pirambu municipality (11°S–37°W) from May/2015 to May/2016. Each specimen of <jats:italic>C. ornatus</jats:italic> was separated, identified and weighed (TW, total weight, g). Carapace length (CL, mm) and width (CW, not including lateral spines, mm) were measured, and the sex and stage of morphological maturity were identified. A total of 403 females and 427 males of <jats:italic>C. ornatus</jats:italic> were found and analysed. The overall sex ratio did not differ from 1:1. Males were larger and heavier than females. Biometric relations (CL‐CW and TW‐CW) were different between sexes. The size at first morphological maturity (CW<jats:sub>m</jats:sub>) was 38.20 mm for females and 44.00 mm for males. The reproductive and recruitment periods were continuous, with some peaks throughout the year. Despite <jats:italic>C. ornatus</jats:italic> being a frequent species in shrimp bycatch, its exploitation status is still unknown.\",\"PeriodicalId\":50945,\"journal\":{\"name\":\"Acta Zoologica\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-05-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Zoologica\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1111/azo.12508\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ANATOMY & MORPHOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Zoologica","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1111/azo.12508","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ANATOMY & MORPHOLOGY","Score":null,"Total":0}
Population structure and reproductive aspects of Callinectes ornatus (Decapoda: Brachyura) present in the bycatch of shrimp fisheries in northeastern Brazil
This study aimed at analysing the population structure and reproductive aspects of Callinectes ornatus present in the bycatch of shrimp fisheries off Sergipe (northeastern Brazil), and at comparing the findings with other regions. Samples were obtained monthly from shrimp trawlers based in the Pirambu municipality (11°S–37°W) from May/2015 to May/2016. Each specimen of C. ornatus was separated, identified and weighed (TW, total weight, g). Carapace length (CL, mm) and width (CW, not including lateral spines, mm) were measured, and the sex and stage of morphological maturity were identified. A total of 403 females and 427 males of C. ornatus were found and analysed. The overall sex ratio did not differ from 1:1. Males were larger and heavier than females. Biometric relations (CL‐CW and TW‐CW) were different between sexes. The size at first morphological maturity (CWm) was 38.20 mm for females and 44.00 mm for males. The reproductive and recruitment periods were continuous, with some peaks throughout the year. Despite C. ornatus being a frequent species in shrimp bycatch, its exploitation status is still unknown.
期刊介绍:
Published regularly since 1920, Acta Zoologica has retained its position as one of the world''s leading journals in the field of animal organization, development, structure and function. Each issue publishes original research of interest to zoologists and physiologists worldwide, in the field of animal structure (from the cellular to the organismic level) and development with emphasis on functional, comparative and phylogenetic aspects. Occasional review articles are also published, as well as book reviews.