Life-history traits in two invasive species of tilapias in Morocco

IF 1.1 4区环境科学与生态学 Q3 MARINE & FRESHWATER BIOLOGY

African Journal of Aquatic Science Pub Date : 2023-04-03 DOI:10.2989/16085914.2023.2197464

H. Ainou, J. Panfili, A. Pariselle, M. Labonne, H. Louizi, A. Benhoussa, O. Berrada Rkhami, J. Agnese

{"title":"Life-history traits in two invasive species of tilapias in Morocco","authors":"H. Ainou, J. Panfili, A. Pariselle, M. Labonne, H. Louizi, A. Benhoussa, O. Berrada Rkhami, J. Agnese","doi":"10.2989/16085914.2023.2197464","DOIUrl":null,"url":null,"abstract":"Life-history traits (LHT) of Oreochromis niloticus in the Sidi Mohamed Ben Abdellah reservoir (BA reservoir) and Oreochromis aureus in the Nador Channel were studied and compared with those of other populations in the world. Specimens were collected between June 2018 and June 2020. Females of both species were smaller at first sexual maturity than males (O. niloticus: 204 vs. 255 mm, O. aureus: 147 vs. 158 mm). The age of maturity for each species was estimated from seasonal otolith growth marks, based on the von Bertalanffy growth function. The asymptotic length was higher in O. niloticus (males 296 mm and females 339 mm) than in O. aureus (males 171 mm and females 169 mm). Based on a literature survey and the results of this study, the type of ecosystem (reservoir vs. river) influenced growth performance indices (φ and φ′) in both species, with reservoirs leading to a higher asymptotic length in both O. niloticus and O. aureus than rivers. Moroccan populations presented the lowest growth index in the populations assessed. These observations suggest that while both invasive species were able to colonise and adapt to their new environments, this was at the expense of limiting their growth and reducing their size at first sexual maturity.","PeriodicalId":7864,"journal":{"name":"African Journal of Aquatic Science","volume":"48 1","pages":"223 - 235"},"PeriodicalIF":1.1000,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"African Journal of Aquatic Science","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.2989/16085914.2023.2197464","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Life-history traits (LHT) of Oreochromis niloticus in the Sidi Mohamed Ben Abdellah reservoir (BA reservoir) and Oreochromis aureus in the Nador Channel were studied and compared with those of other populations in the world. Specimens were collected between June 2018 and June 2020. Females of both species were smaller at first sexual maturity than males (O. niloticus: 204 vs. 255 mm, O. aureus: 147 vs. 158 mm). The age of maturity for each species was estimated from seasonal otolith growth marks, based on the von Bertalanffy growth function. The asymptotic length was higher in O. niloticus (males 296 mm and females 339 mm) than in O. aureus (males 171 mm and females 169 mm). Based on a literature survey and the results of this study, the type of ecosystem (reservoir vs. river) influenced growth performance indices (φ and φ′) in both species, with reservoirs leading to a higher asymptotic length in both O. niloticus and O. aureus than rivers. Moroccan populations presented the lowest growth index in the populations assessed. These observations suggest that while both invasive species were able to colonise and adapt to their new environments, this was at the expense of limiting their growth and reducing their size at first sexual maturity.

查看原文本刊更多论文

摩洛哥两种罗非鱼入侵物种的生活史特征

研究了Sidi Mohamed Ben Abdelah水库（BA水库）尼罗罗非鱼和Nador海峡金黄色罗非鱼的生活史特征，并与世界其他种群进行了比较。标本采集于2018年6月至2020年6月。这两个物种的雌性在第一次性成熟时都比雄性小（尼罗O.niloticus：204对255毫米，金黄色O.aureus：147对158毫米）。根据von Bertalanffy生长函数，根据季节性耳石生长标记估计每个物种的成熟年龄。尼洛氏O.niloticus（雄性296毫米，雌性339毫米）的渐近长度高于金黄色O.aureus（雄性171毫米，雌性169毫米）。根据文献调查和本研究的结果，生态系统的类型（水库与河流）影响了这两个物种的生长性能指数（φ和φ′），水库导致尼罗罗非鱼和金黄色葡萄球菌的渐近长度均高于河流。在评估的人口中，摩洛哥人口的增长指数最低。这些观察结果表明，虽然这两种入侵物种都能够定居并适应新环境，但这是以限制它们的生长和在第一次性成熟时缩小它们的体型为代价的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

African Journal of Aquatic Science MARINE & FRESHWATER BIOLOGY-

CiteScore

3.90

自引率

7.10%

发文量

审稿时长

>12 weeks

期刊介绍： The African Journal of Aquatic Science is an international journal devoted to the study of the aquatic sciences, covering all African inland and estuarine waters. The Journal publishes peer-reviewed original scientific papers and short articles in all the aquatic science fields including limnology, hydrobiology, ecology, conservation, biomonitoring, management, water quality, ecotoxicology, biological interactions, physical properties and human impacts on African aquatic systems.