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P-ISSN: 2394-0506, E-ISSN: 2347-5129

International Journal of Fisheries and Aquatic Studies

2024, Vol. 12, Issue 5, Part C

Microscopic study of the gonads in males and females of Euthynnus alletteratus (Rafinesque, 1810) and Sarda sarda (Bloch, 1793), two species of coastal affinity from the gulf of Guinea, Côte d’Ivoire


Author(s): Angui Kouamé Jean Paul, Affourmou Kouamé, Assan N’dri Florentine, Diaha N’guessan Constance, Yao N’guessan, Kouame Konan Jacques and Et Yao Kouakou

Abstract: The object of this work is to provide more complete information on the microscopic stages of the gonads in males and females of Euthynnus alletteratus and Sarda sarda from the gulf of Guinea, through a histological study.
This study was carried out from January 2016 to December 2016 on specimens from artisanal marine fisheries. Monthly samples of the two fish species were taken at the Zimbabwe and Abobo-doumé landing stages. A total of 1,221 individuals, including 713 Euthynnus alletteratus (362 males and 351 females) and 508 Sarda sarda (168 males and 340 females) were examined. The microscopic maturity stages led to the determination of pre-reproductive, reproductive and post-reproductive stages, used as an indicator of reproductive accuracy. The post-reproductive stage was not observed in males. The pre-reproduction stage showed the presence of spermatogonia, spermatocytes and spermatids. As for the reproductive stage, in addition to these cells, it was marked by an abundance of spermatozoa. In females, the pre-reproduction stage revealed oocytes in the primary growth and cortical alveolus stages. The reproductive stage showed oocytes in the vitellogenesis (primary, secondary and tertiary), late migration and hydration stages. The rate of oocyte atresia was 23.55±7.21% in Euthynnus alletteratus compared with 10.12±3.53% in Sarda sarda. The post-ovulatory follicles observed at the post-breeding stage show that spawning takes place in Ivorian waters.


DOI: 10.22271/fish.2024.v12.i5c.2982

Pages: 202-209  |  51 Views  22 Downloads

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International Journal of Fisheries and Aquatic Studies
How to cite this article:
Angui Kouamé Jean Paul, Affourmou Kouamé, Assan N’dri Florentine, Diaha N’guessan Constance, Yao N’guessan, Kouame Konan Jacques, Et Yao Kouakou. Microscopic study of the gonads in males and females of Euthynnus alletteratus (Rafinesque, 1810) and Sarda sarda (Bloch, 1793), two species of coastal affinity from the gulf of Guinea, Côte d’Ivoire. Int J Fish Aquat Stud 2024;12(5):202-209. DOI: https://doi.org/10.22271/fish.2024.v12.i5c.2982
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