Archives


International Journal of Zoology and Applied Biosciences

Year : 2022 | Volume: 7 | Issue: 6 | Pages: 24-31

doi: https://doi.org/10.55126/ijzab.2022.v07.i06.004

Species richness and abundance of small mammals from Nimba region, Northeastern Liberia

Kouakou Hilaire Bohoussou,Kouame Bertin Akpatou,Laurent Ahissa, and Kouakou Eliezer N’Goran

Received on: 08/17/2022

Revised on: 10/11/2022

Accepted on: 10/21/2022

Published on: 11/04/2022

  • Kouakou Hilaire Bohoussou,Kouame Bertin Akpatou,Laurent Ahissa, and Kouakou Eliezer N’Goran( 2022).

    Species richness and abundance of small mammals from Nimba region, Northeastern Liberia

    . International Journal of Zoology and Applied Biosciences, 7( 6), 24-31.

  • click to view the cite format


Abstract

This study was carried out in a biodiversity hotspot within the Nimba region located in the northeastern part of Liberia. The Nimba region is known to harbor exceptional fauna diversity. However, the small mammal communities in Nimba region are poorly documented. The aim of this study was to determine the species richness and relative abundance of rodents and shrews in five sites: Bento, East Nimba, Gangra-Yuelliton, Tokadeh and Vayampah. A total of 244 individual of small mammals comprising 18 species were trapped on 4,375 trap nights. Rodent species recorded include: Arvicanthis rufinus, Dephomys defua, Grammomys buntingi, Graphiurus lorraineus, Hybomys planifrons, Hybomys trivirgatus, Hylomyscus simus, Lemniscomys striatus, Lophuromys sikapusi, Malacomys edwardsi, Mastomys erythroleucus, Mus muscoloides, Mus setulosus and Praomys rostratus. Shrew species were Crocidura eburnea, Crocidura jouvenetae, Crocidura muricauda and Crocidura obscurior. The most dominant species was Hylomyscus simus (22.95%), followed by Praomys rostratus, Crocidura muricauda and Crocidura eburnea. The highest species richness was recorded at Gangra-Yuelliton and lowest at Tokadeh. Diversity indexes were higher at East nimba (H’ = 2.01; 1-D = 0.82) and Gangra-Yuelliton (H’ = 2.00; 1-D = 0.83) and lower at Tokadeh (H’ = 1.57; 1-D = 0.75). Similarity index revealed high resemblance in species composition between Bento and Vayampah. The lowest similarity was observed between Tokadeh and Gangra-Yuelliton. This study highlighted the high biological diversity of small mammal communities in Liberia's Mount Nimba region. Thus, this zoological group should now be taken into account in the biodiversity conservation strategies of Mount Nimba.

Keywords

Small mammal community, Rodentia, Shrew, Diversity index, Rainforest, West Africa.