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Fluctuating Asymmetry of Elopes lacerta (Valenciennes, 1847) Otoliths in the Western African Waters

Open Journal of Marine Science 2024年第3期14卷 41-62页

作者： Madel Floriane Adjibayo Houeto Marwa Mejri Malek Tazarki Marius Sounouvou Nicolas Andrialovanirina Meriem Ben Ghorbel pierre Dossou-Yovo Abdellah Chalh pierre quignard Monia Trabelsi Kélig Mahé 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 IFREMER Unit HMMN Halieutic Resources Laboratory Boulogne-sur-Mer France Laboratory for Research into the Processing and Conservation of Fishery Products (LAREPROH) University of Abomey-Calavi (UAC) Abomey-Calavi Benin Unit of Population Genetics and Biological Resources Faculty of Sciences of Tunis University of Tunis El Manar Tunis Tunisia Laboratoire dIchtyologie Universit Montpellier Montpellier France

The importance of this study lies in the in-depth exploration of the ecological diversity of otoliths in Elopes lacerta, based on the analysis of data from 260 individuals collected from various sites, including the Porto Novo lagoon, the Cotonou lagoon, Lake Nokou, and the Atlantic coast in southern Benin. The results highlight significant variations in otolith morphology, establishing relevant links with the biological parameters of the fish at each site. Exploration of the asymmetry between the right and left sides reveals notable distinctions between these two aspects. Analysis of otolith shape thus emerges as a valuable tool for discriminating between stocks and providing a better understanding of ecological variations. The local diversity observed highlights the crucial importance of implementing adaptive management strategies to ensure effective conservation of the species and its habitat.

关键词： Analysis Porto-Novo Lagoon Cotonou Lagoon Lake Nokoué Coast Atlantic

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Reproduction of <i>Atherina lagunae</i>from the Tunis North Lake

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Journal of Water Resource and Protection 2012年第9期4卷 779-782页

作者： Nedia Ayed Eric Faure Jean-pierre quignard Monia Trabelsi Laboratory of Analysis Topology and Probability 7353 Aix-Marseille Universités Marseille France Laboratory of Ichthyology University of Montpellier II Montpellier France Unit of Marine Biology Faculty of Sciences University Campus Tunis El Manar Tunisia

In this study, the reproduction of the sand smelt, Atherina lagunae, from the Tunis North Lake is investigated. The smallest mature female was 39 mm total length (TL). Fifty percent of the females were mature at 58 mm (TL). The yearly and monthly average gonadosomatic indexes (GSI) are presented. The average value of GSI for the 12-month period was respectively 3.02%, 2.57% and 2.8% for females, males and both sexes. The GSI began to increase in March (2.37% for females and 2.12% for males). The maximum GSI was recorded in May, 11.29% for females and 10.03% for males. The highest values were recorded between March and July, indicating the reproduction period of Atherina lagunae in the Tunis North Lake. Similar GSI values were recorded in sand smelt males from brackish lagoons of southern France.

关键词： Atherina lagunae Tunis North Lake Tunisia Reproduction GSI

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