Comparative genetic and morphometric characterization of sympatric populations of Heterobranchus bidorsalis and Heterobranchus longifilis

Authors

  • W. A. Olaniyi Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
  • F. A. Akinsemolu Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.
  • D. J. Ogunyemi Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.
  • O. G. Omitogun Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.

DOI:

https://doi.org/10.51791/njap.v44i5.1482

Keywords:

African catfish species, Heterobranchus bidorsalis, Heterobranchus longifilis, electrophoresis, morphometric

Abstract

African catfish species of Heterobranchus longifilis and H. bidorsalis are gaining breeding potentials and receiving great attention among catfish stakeholders. However, very few comparative research works have been done on the natural populations and cultured stocks of these economically important species. In this study, the genetic evaluation of the fish species populations obtained from Lake Kainji, New Bussa, Niger State, Nigeria, was conducted through Sodium Dodecyl Sulphate - Polyacylamide Gel Electrophoresis oftheir serum proteins, and morphometric evaluation. Morphometric data showed that adipose fin attributes [length; depth (cm), % standard length (SL)] of 23.4±1.1; 4.2±0.5 in the H. bidorsalis confirmed its hyper-development compared to H. longifilis of 25.7±3.2; 4.4±0.6 respectively. The pre-dorsal length gave higher value (%SL) in the H. longifilis (38.6±2.2) than H. bidorsalis (34.6±1.2); while H. bidorsalis further possessed more counts at dorsal and anal fin rays than H. longifilis. The comparative dendrogram of the PAST analysis showed a genetic distance of 4.2% that indicated the specificity of these species and, though significantly different, they had very close relationship. Therefore, proper identification of these species is highly necessary to maintain genetic purity in breeding programmes and biodiversity.

Author Biographies

W. A. Olaniyi, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria

Department of Animal and Environmental Biology

F. A. Akinsemolu, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.

Department of Animal Sciences

D. J. Ogunyemi, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.

Department of Animal Sciences

O. G. Omitogun, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.

Department of Animal Sciences

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Published

2020-12-31

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Section

Articles