Morphological Characterization and Relationship between Morphometric Parameters and Standard Length Barbus altianalis (Boulenger, 1904) Populations in Lake Victoria Drainage Basin, Kenya
Journal Title: Annual Research & Review in Biology - Year 2017, Vol 14, Issue 5
Abstract
Aim: To provide data on external morphology of Barbus altianalis from four major rivers in Lake Victoria watershed, determine whether there are significant morphometric differences between sub-populations from the rivers of the catchment area examined and to determine relationship between morphometric parameters and standard length (SL). Methods and Results: Morphometric analysis was carried out in the study. Based on 21 morphometric characters, Barbus altianalis populations from four Lake Victoria catchment rivers Nzoia, Yala, Nyando and Sondu-Miriu were morphologically characterised based on 21 morphometric parameters. Principal Component Analysis (PCA) showed separation of Rivers Yala from Nzoia, Nyando, and Sondu-Miriu populations. Factor loadings established that 11 characters were morphologically informative. PCA1 accounted for 43.25% of the variation while PCA2 accounted for 19.44% of the variation. Mann-Whitney U Test (α=0.05) indicated lack of significanct difference in morphological characteristics between Sondu-Miriu and Nyando, but significant intra-specific morphological difference between all the other pairs of rivers. All external parameters except 4 showed positive relationship with standard length (SL). Our results suggests presence of intra-specific morphometric variation between the four populations and corroborate findings based on mitochondrial DNA analysis. Conclusion: Morphological characterization reveal intra specific variation in Barbus altianalis in the Lake Victoria catchment and suggests the existence of river specific morphs, a possible adaptation to changes in the catchment. This could also provide evidence of long term existence of migratory as well as riverine sedentary populations of the species within Lake Victoria basin (LVB).
Authors and Affiliations
Emily Jepyegon Chemoiwa, Romulus Abila, Elizabeth Wanjiku Njenga, James Barasa
Keywords
Related Articles
- EP ID EP313556
- DOI 10.9734/ARRB/2017/31984
- Views 75
- Downloads 0
Extrapolation of the Species Accumulation Curve for Incomplete Species Samplings: A New Nonparametric Approach to Estimate the Degree of Sample Completeness and Decide when to Stop Sampling
Incomplete species samplings are deemed to remain the common practice in those groups of animals, such as small or micro- invertebrates, with numerous species that often are more or less difficult to detect in the field....
Nutrients In situ Degradability of Almond Hulls and Cucumber Wastes from Greenhouse
Aims: Information about degradability of nutrients, effective degradability (ED) values and digestion kinetics of agricultural wastes is important for feed manufacturing industry and farmers performing feed mixing practi...
Diagnostic Role of Aberrant DNA Promoter Methylation in Ovarian Cancer
Background: Alteration of DNA methylation of CpG islands in the promoter regions of tumor suppressor genes is associated with cancer development. We aimed to examine the diagnostic efficacy role of promoter methylated tu...
Physiological Dynamics of Platelets’ Activity in Aged Rats
The process of aging inevitably touches the system of hemostasis and leads very often to the development of thrombophilia. Platelets are an important component of hemostasis as they mostly determine its activity on the w...
Antimicrobial Activity of Potato Rhizospheric Pseudomonas chlororaphis subsp. aureofaciens from Sétif Algeria
Aims: This study was assessed to demonstrate the antimicrobial activity in vitro of an identified fluorescent Pseudomonas strain characterized for its capacity to produce phenazine compounds. Methodology: First Pseudomon...