Size Distribution, Length-Weight Relationship and Condition Index of Tagelus adansonii Bosc 1801 (Mollusca: Bivalvia, Solecurtidae) in the Joal-Fadiouth Lagoon (Senegal)

Jeanne Elisabeth Diouf, Alioune Faye, Ephigénie Ndew Dione, Jean Fall, Babacar Sané, Malick Diouf


Size distribution, length-weight relationship and condition index are some of the many parameters that contribute to the study of the growth, environmental conditions and reproduction of an aquatic species. For Tagelus adansonii, only a few studies were carried out on these parameters. This species is a bivalve of the solecurtidae family only found on the East Atlantic Coast between Mauritania and Angola. The objective of this study was to examine the biometric relationships as well as size and condition index variations, within the perspective of resource management. In this study, the average size obtained (47.78mm) from the monthly sampling in Joal Fadiouth lagoon was smaller compared to sizes obtained in other countries for the same genus and species. The size frequency distribution is unimodal, the most abundant class is 45-50mm. The mean condition index is 18.41±16.47 using the formula by Beninger and Lucas (1984). The values of the condition indices varied throughout the duration of the study. In the period of cold-to-warm transition (June) the maximum values of the condition indices were observed, while in the period of warm-to-cold transition (November to December), the minimum values were registered. The allometry is positive (3.07) in Joal as in most studies on this genus.

Full Text:




  • There are currently no refbacks.

Copyright (c) 2021 Jeanne Elisabeth Diouf, Alioune Faye, Ephigénie Ndew Dione, Jean Fall, Babacar Sané, Malick Diouf

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Journal of Biology and Life Science  ISSN 2157-6076

Copyright © Macrothink Institute

To make sure that you can receive messages from us, please add the '' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.

If you have questions, please contact