Get some knowledge about Mozambique tilapia at "Investigating body shape variation of Oreochromis mosambicus (Peters, 1852) sampled from Lake Mainit, Mindanao, Philippines"

By: Virgilio B. Ratunil Jr, Clevin P. Libay, Gideon A. Ebarsabal, Gregorio Z. Gamboa Jr, Dexter Q. Mahomoc, Cresencio C. Cabuga Jr.

Key Words: Geometric morphometric, Morphology, Shape analysis, fishery, Caraga Region

Ecological differentiation in terms of spatial and temporal condition highly attributes changes of the organism from genotypic to phenotypic composition and thus affecting morphological structures. This study aims to investigate the body shape variation in the population of Oreochromis mosambicus; Peters 1852 sampled from Lake Mainit, Mindanao, Philippines using Geometric Morphometric analysis.

The endemic O. mosambicus constitute a significant fishery resource in the study area. Thus, they are economically important fish species. A total of 60 individuals comprises of 30 males, and 30 females were collected. The sample collection was done in July 2019. Female and male samples were subjected to Symmetry and Asymmetry Geometric Data Software (SAGE). Results show that both female and male samples obtain a highly significant difference P<0.0001 from the data provided through Procrustes ANOVA and Principal Component Analysis (PCA) showing high fluctuating asymmetry (FA) levels in female 57.52% when compared in males 52.78%. This show a body shape variation among the sexes while the natural settings play a major component for shifting shape and forms of organims. Thus, the importance of using Geometric Morphometric analysis allows to scrutinize the shape variation of fishes among and between populations and thus clearly defines structures.Get the full articles at-
J. Bio. Env. Sci. 15(6), 82-91, December 2019.

Journal of Biodiversity and Environmental Sciences-JBES is an open-access scholarly research journal, published by International Network for Natural Sciences-INNSPUB. JBES published original scientific articles in different field of Environmental Sciences and Biodiversity. JBES published 2 Volume and 12 issue per calender year.

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A review on morphological characterization, variation and distribution pattern of Eurema butterflies of Peninsular Malaysia - JBES

• Noor Azrizal-Wahid1,2, Mohd Sofian-Azirun1, Mohammed Rizman-Idid1,3

Seven species of Eurema butterflies comprised of 263 adult individuals collected from various sampling sites of Peninsular Malaysia were identified and diagnosed based on their morphological characteristics and variation pattern. The result from diagnosis revealed that the main morphological characteristics that differentiated between the members of Eurema butterflies are the number of cell spots in discoidal cell and the pattern of brown apical patch, both located on the underside of the fore wing.

E. sari, E. bland a and E. tilaha are morphologically distinct and easily identified. Species of Eurema butterflies showed no variations, except for E. hecabe that had variable patterns of fore wing black apical border in several individuals, which corresponded to the altitudinal changes of their sampling sites. The distribution of the genus Eurema in Peninsular Malaysia is also discussed based on the recorded field sampling data.

The record shows that all six species with the exception of E. tilaha which was excluded from this study were evenly distributed across all sampling areas and can be found at most part throughout the Peninsular Malaysia with species of E. andersonii has the most consistent distribution pattern in all four different areas of sampling. This study also suggested that the most common species of the genus Eurema in Malaysia is species of E. blanda while E. tilaha was reported as the rare species.

Get more articles at: Volume 6, Number 3, March 2015 – JBES

Published Journal's: Journal of Biodiversity and Environmental Sciences (JBES)

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