Analysis of Otolith Shape as a Tool for Discriminating Stocks of Cassava Croaker (Pseudotolithus senegalensis) in Beninese Waters
Analysis of Otolith Shape as a Tool for Discriminating Stocks of Cassava Croaker (Pseudotolithus senegalensis) in Beninese Waters作者机构：Laboratory of Ecology Biology and Physiology of Aquatic Organisms Faculty of Sciences of Tunis University of Tunis El Manar Tunis Tunisia Institute of Mathematics and Physical Sciences University of Abomey-Calavi (UAC) Abomey-Calavi Benin Fisheries Resources Laboratory Unit HMMN French Institute for Ocean Science (IFREMER) Boulogne-sur-Mer France Laboratory for Research into the Processing and Conservation of Fishery Products (LAREPROH) University of Abomey Calavi (UAC) Abomey-Calavi Bnin Unit of Population Genetics and Biological Resources Faculty of Sciences of Tunis University of Tunis El Manar Tunis Tunisia Ichtyology Laboratory Montpellier University Montpellier France
出 版 物：《Open Journal of Marine Science》 (海洋科学期刊（英文）)
年 卷 期：2024年第14卷第4期
页 面：96-114页
主 题：Otoliths Pseudotolithus senegalensis Factorial Analysis Porto-Novo Lagoon Atlantic Coast and Lake Nokoué
摘 要：This study examined the right and left otoliths of 174 individuals of Pseudotolithus senegalensis from the Porto-Novo lagoon, Lake Nokoué and the Atlantic coast. The results show a significant variation in the population according to geographic location. Mixed-effects linear analysis showed no significant variation by site, side or sex (p 0.05). Analysis of otolith shape using ANOVA showed significant differences for length, width and area (p 0.05). Canonical discriminant analysis revealed significant differences between sites (p 0.05). Finally, shape analyses showed significant differences between sites (p = 0.0001) and between right and left sides (p = 0.007), but no difference by sex (p = 0.395). The study of otolith morphology is therefore proving to be a valuable tool for differentiating stocks and understanding ecological variations.
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