Length-weight relationships and condition factors of Mochokidae (Pisces: Teleostei: Siluriformes) from Niger River, Northern Benin

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

doi:10.3153/AR20007

EN

Length-weight relationships and condition factors of Mochokidae (Pisces: Teleostei: Siluriformes) from Niger River, Northern Benin

Abstract

In the Niger River in Benin, the fishes of Mochokidae family are of high commercial and economic importance. The current study investigated size structures, length-weight relationships and condition factors of these catfishes in order to evaluate their plumpness. Mochokids were sampled monthly from February 2015 to July 2016 with traps, seine and gillnet. Overall, the fish species showed unimodal, bimodal and tri-modal standard-length distributions. Length-weight models displayed allometric coefficients (b) varying between 2.236 and 3.380, indicating positive and negative allometric growth with correlation coefficients (r) ranging between 0.87 and 0.99. Condition factors were moderate to low and varied from K= 0.409 for Synodontis frontosus to K= 7.276 for Synodontis sorex that showed a higher value K= 31.13 in aquatic vegetation. Major threats were the use of chemical fertilizers and pesticides for adjacent agriculture, the retrieval of water for agriculture and domestic uses, the invasion of floating plants, the introduction of exotic fish species and overfishing. These data constitute valuable fisheries documentation that will contribute to conservation, valorization and sustainable exploitation of Mochokid fishes in Niger River in Benin.

Keywords

Allometric growth,Conservation,Synodontis schall,Sustainable exploitation

Thanks

We are grateful to the Laboratory of Ecology and Aquatics Ecosystems Management (LEMEA) of the Department of Zoology, Faculty of Sciences and Technics, University of Abomey-Calavi for its logistic assistance. Many thanks to Mama Razack, Boro Gado Ikililou, Akonou Germard, Aholou Didier, Kpade Bernard and the fishermen for their help in fish sampling. We also thank the numerous reviewers for their thorough peer-review of this manuscript.

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Details

Primary Language

English

Subjects

Hydrobiology

Journal Section

Research Article

Authors

Hamidou Arame
0000-0002-0039-7787
Benin

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

Nambil Adjıbade
0000-0001-8656-3602
Benin

Rachad Sıdı Imorou
0000-0001-6910-0059
Benin

Pejanos Sonon
0000-0003-3810-7623
Türkiye

Publication Date

April 1, 2020

Submission Date

December 24, 2019

Acceptance Date

March 1, 2020

Published in Issue

Year 2020 Volume: 3 Number: 2

DOI

https://doi.org/10.3153/AR20007

IZ

https://izlik.org/JA25EW78TB

Cite

RIS / Bibtex

APA

Arame, H., Adıte, A., Adjıbade, N., Sıdı Imorou, R., & Sonon, P. (2020). Length-weight relationships and condition factors of Mochokidae (Pisces: Teleostei: Siluriformes) from Niger River, Northern Benin. Aquatic Research, 3(2), 72-84. https://doi.org/10.3153/AR20007

Öz

Length-weight relationships and condition factors of Mochokidae (Pisces: Teleostei: Siluriformes) from Niger River, Northern Benin

Abstract

Keywords

Thanks

References

Details

Primary Language

Subjects

Journal Section

Authors

Publication Date

Submission Date

Acceptance Date

Published in Issue

DOI

IZ

Cite