The Physico-Chemistry and Aquatic Insects Diversity of Nwaniba River, Akwa Ibom State, Nigeria

Esenowo I. K, Akpabio E. E, Ugwumba O. A and Akpan A. U

Journal of Asian Scientific Research, 2017, vol. 7, issue 8, 372-378

Abstract: The physico-chemical parameters and aquatic insect composition, distribution and abundance of Nwaniba River in Akwa Ibom State were investigated from March to September, 2013. Surface water samples were collected for physico-chemical parameters and aquatic insect analysis from four (4) sampling stations according to standard methods. The results of the physico-chemical parameters were within The National Environmental Standards and Regulations Enforcement Agency (NESREA) recommended limits for aquatic life in the tropic. A total of 2130 insect individuals were collected consisting of 7 Orders and 14 families. The Order Odonata was the most abundant with 55.8% followed by Coleoptera (37.75%), Hemiptera (4.5%), Diptera (1.7%), Orthoptera (0.2%), Hymenoptera (0.09%) and Dermaptera with 0.05% percentage abundance. The absence of pollution sensitive taxa such as Ephemeroptera, pecoptera and Tricoptera (EPT) which are only found in clean water bodies indicates that Nwaniba River is relatively polluted.

Keywords: Physico-chemical parameter; Insect composition; Odonata; Coleoptera; Hemiptera; Nwaniba. (search for similar items in EconPapers)
Date: 2017
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