IIARD International Institute of Academic Research and Development

IIARD INTERNATIONAL JOURNAL OF GEOGRAPHY AND ENVIRONMENTAL MANAGEMENT (IJGEM )

E-ISSN 2504-8821
P-ISSN 2695-1878
VOL. 8 NO. 1 2022

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Species Composition and Relative Abundance of Insects in Niger Delta University and Environs of Amassoma Community in Bayelsa State, Nigeria

Thomas, C. N. & Gijo, A. H.

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Abstract

The composition and relative abundance of insects inhabiting the ecosystems of the Niger Delta University and surroundings of Amassoma community was studied from May 15 – October 15, 2020 to have a baseline data for purposes of research and environmental impact assessment. Five (5) methods used to collect samples from four sites included the sweep nets, aerial nets, pit fall traps, light traps and direct collection by hand. A total of 7,225 individual species of insects were collected and identified into 8 orders, 24 families and 32 species. The most abundant insects were the Anopheles species (Dipteria:culicide) constituted 58.74%; Dorylus species (Diptera:formicidae) constituted 26.12%. There were low numbers of six (6) species of insects which included Libellula pulchella (Odonata: libullidae); Danaus plexippus (Lepidoptera: nymphalidae); Spodoptera exampta (Lepidoptera: noctuidae), and Colgmia sp. (Diptera: psychodoidae) ranged between 1.24%-1.68% in abundance. Among the remaining twenty-six (26) families which had lower number of species, the least were the Hypena cabra (Erebidae), Labidomera clivicollis (Chrysomelidae) and Coccinnella sp. (Cocccinelidae) which had negligible populations that ranged between 0.05-0.043%, because they were very few in numbers. Five insects which had abundance of 0.076% were not identified. This preliminary study confirmed the rich composition of insect species in the environs of Niger Delta University need there are threats factors in the environment that are driving the insects towards extinction were needed to be investigated.

keywords:

Composition, Abundance, Insects and Species

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