Aspects of life history patterns of the cichlid fish Hemichromis fasciatus Peters, 1857 from Okpara Stream, Northern Benin, West Africa

Rachad Sıdı Imorou; Alphonse Adıte; Hamidou Arame; Pejanos Sonon

doi:10.3153/AR20010

EN

Aspects of life history patterns of the cichlid fish Hemichromis fasciatus Peters, 1857 from Okpara Stream, Northern Benin, West Africa

Abstract

The piscivorous cichlid Hemichromis fasciatus dominated the Okpara Stream of Oueme River in Benin, and numerically made 29.49% of the fish community. Some aspects of the reproductive biology of this fresh/ brackish water cichlid were examined to evaluate the spawning patterns and establishment of the species in Okpara Stream. Hemichromis fasciatus individuals were sampled monthly during 18 months from December 2015 to May 2017 with seine, cast nets, gillnets, hooks and traps. Among the 2,818 individuals sampled, 55.43% were females and 37.33% were males with a sex-ratio of 1.49:1. The species showed low fecundities ranging between 113 and 1,716 oocytes. Length at first sexual maturity (L50) in Okpara Stream were reduced, 9.22 cm-TL (females) and 10.95 cm-TL (males), indicating an early maturation. The ovarian structure give evidence of multiple spawning and the species reproduces all seasons. In Okpara Stream, Hemichromis fasciatus exhibited a life history strategy between “r” and “K” selection, yet, close to “r” selection. Because the length at first capture (Lc50 = 8.78 cm) is lower than sizes at first sexual maturity, stocks of spawners could be reduced and leading to low recruitment.

Keywords

Life-history,Hemichromis fasciatus,Okpara stream,Multiple spawning,Recruitment,Early maturity

Supporting Institution

Laboratoire d'Ecologie et de Management des Écosystèmes Aquatiques, Département de Zoologie, Faculté des Sciences et Techniques

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Details

Primary Language

English

Subjects

Hydrobiology

Journal Section

Research Article

Authors

Rachad Sıdı Imorou
0000-0001-6910-0059
Benin

Alphonse Adıte ^*
0000-0002-2255-4464
Benin

Hamidou Arame
0000-0002-0039-7787
Benin

Pejanos Sonon
0000-0003-3810-7623
Benin

Publication Date

April 1, 2020

Submission Date

December 23, 2019

Acceptance Date

February 18, 2020

Published in Issue

Year 2020 Volume: 3 Number: 2

DOI

https://doi.org/10.3153/AR20010

IZ

https://izlik.org/JA57EC33RH

Cite

RIS / Bibtex

APA

Sıdı Imorou, R., Adıte, A., Arame, H., & Sonon, P. (2020). Aspects of life history patterns of the cichlid fish Hemichromis fasciatus Peters, 1857 from Okpara Stream, Northern Benin, West Africa. Aquatic Research, 3(2), 110-123. https://doi.org/10.3153/AR20010

Öz

Aspects of life history patterns of the cichlid fish Hemichromis fasciatus Peters, 1857 from Okpara Stream, Northern Benin, West Africa

Abstract

Keywords

Supporting Institution

References

Details

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Subjects

Journal Section

Authors

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Acceptance Date

Published in Issue

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IZ

Cite