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ISSN Print: 2381-1013 ISSN Online: 2381-1021

American Journal of Agricultural Science

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Proximate Composition of Mangrove Periwinkle; Pachymelania aurita Exposed to Aqueous and Ethanolic Bark Extracts of Mahogany; Khaya grandifoliola

American Journal of Agricultural Science
Vol.8 , No. 1, Publication Date: Jan. 22, 2021, Page: 1-7

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Authors

[1]	Okonkwo Cleopatra Ebere, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria.
[2]	Yusuf Waheed Abiodun, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria.
[3]	Igwegbe Adeline Nkechi, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria.
[4]	Oke Ibitayo Adetola, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria.

Abstract

The proximate composition to determine total protein, total carbohydrate, total lipid and moisture content of Mangrove Periwinkle; Pachymelania aurita exposed to Aqueous and Ethanolic Bark Extracts of Mahogany; Khaya grandifoliola were assessed. Samples were handpicked from the coastal waters in the shelly sand sediments during low tides. In the sublethal toxicities, the organisms were exposed to 1/10th, 1/100th and 1/1000th of the 96h LC50 of the extracts. Results reveal that, P. aurita on exposure to the bark extracts at sublethal dosage showed an increase (P<0.05) in ash content and total protein as the moisture content decreased. ANOVA showed significant differences (where P<0.05) in the proximate composition of the exposed organisms when compared with the control organisms. The Duncan multiple range test (DMRT) also showed significant differences between each extract concentration during the exposure period. The result implied that, Toxicological response of Mangrove Periwinkle; Pachymelania aurita to toxicants can be assessed by analyzing possible alterations of the proximate composition of the exposed organism and that any alteration to their composition may be as a result of the impact of a given toxicant to the physiology of the bio-indicator. It was concluded that P. aurita is able to tolerate sublethal doses of extracts of K. grandifoliola without major alterations to its proximate composition.

Keywords

Edible Periwinkle, Mahogany Extracts, Proximate Composition, Khaya grandifoliola

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