Correlation between Morphometric and Dimorphic Variables to Characterize Potamon ebonyicum (Crustacea: Decapoda: Brachyura) from Ebonyi River Basin of Nigeria
Rupert C. Akpaniteaku, John N. Ofoma, Richard C. Ogbonna
Asian Journal of Fisheries and Aquatic Research · pp. 1–8 · Published 28 Dec 2018
10.9734/ajfar/2018/v2i226130Abstract
Studies were carried out to determine relationships between morphometric and dimorphic variables of freshwater crab, Potamon ebonyicum. Parameter measurements were taken from side to side (left and right); and from tip to the extremity of characteristic features, to ensure that values were obtained at the widest points. The dimorphic variables showed positive correlation and linear relationship between male and female. Nonlinear relationship was recorded in most variables morphologically. Regression analyses revealed poor correlation between carapace length (CL) and weight, and between carapace width (CW) and weight. There was a positive correlation between CL and CW of both sexes. The findings could be a guide for determining condition factor. They could also be useful in field identification and further classification of freshwater crab.
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