Relative Yield and Sex Ratio of the West African Fiddler Crab Uca Tangeri in Mbo River, Niger Delta, Nigeria.

Ating Emmanuel A.; Sikoki Francis D.

doi:10.52589/AJSTE-BTAFOLQ1

Relative Yield and Sex Ratio of the West African Fiddler Crab Uca Tangeri in Mbo River, Niger Delta, Nigeria. | AB Journals

Relative Yield and Sex Ratio of the West African Fiddler Crab Uca Tangeri in Mbo River, Niger Delta, Nigeria.

;

Advanced Journal of Science, Technology and Engineering

Vol. 5Issue 12025pp. 1–9Published 14 January 2025

DOI 10.52589/AJSTE-BTAFOLQ1

1,058Views

352Downloads

Metrics

Share Link

𝕏

Cite this

Citation unavailable for this article.

Abstract:

The study of the relative yield and sex ratio of the West African fiddler crab (Uca tangeri) in Mbo river of Akwa Ibom State, Niger Delta, Nigeria, was conducted for 12 consecutive months. Uca tangeri exhibited sexual dimorphism with a sex ratio of 1.2:1.0, which was significantly biased in favour of males. The yield isopleths demonstrate the response of the crab to both variation in E (exploitation level) and Lc/L∞ (a proxy for mesh size). Yield contours with Lc/L∞ = 0.74 usually consist of four quadrants (Pauly and Soriano, 1986), each with its characteristics. The yield isopleths with Lc/L∞ = 0.74 and E = -1.62 belong to quadrant B, which implies that, large specimens were caught at high effort level.

Keywords:Weight Fecundity Crab Mbo.

Copyrights

Authors retain copyright in their articles and have unrestricted rights to reuse, republish, archive, share, and distribute their work after publication.
All articles are published open access under the Creative Commons Attribution 4.0 International (CC BY 4.0) licence, which permits use, sharing, adaptation, distribution, and reproduction in any medium or format, including for commercial purposes, provided appropriate credit is given to the original author(s) and source.

Loading…

Disclaimer/Publisher’s Note

The statements, opinions and data contained in this publication are solely those of the author(s) and contributor(s) and not of AB Journals or its editors. AB Journals remains neutral and accepts no responsibility for any injury or damage resulting from ideas, methods, instructions or products referred to in the content.