Journal of Environmental Biology

Truss network based morphometric and meristic variations among south-western populations of Macrognathus aculeatus in Bangladesh

M. Sarower-E-Mahfuj¹*, S.K. Das², K.N. Azad³, A.K. Paul⁴, I. Hoshan⁵, S. Sultana⁶ and M. Biswas¹ 

¹Department of Fisheries and Marine Bioscience, Jashore University of Science and Technology, Jashore, 7408, Bangladesh

²Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia

³Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh

⁴Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, 6205, Bangladesh

⁵Department of Fisheries Biology and Genetics, Faculty of Fisheries, Hajee Mohammad Danesh Science and Technology University, Dinajpur, 5200, Bangladesh

⁶Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna, 9208, Bangladesh

*Corresponding Author Email : sa.mahfuz@gmail.com

Received: 14.11.2020                                                                   Revised: 17.03.2021                                                         Accepted: 16.04.2021

Abstract

Aim: Landmark-based truss network system was applied to examine the morphometric and meristic differences among four different populaces of Macrognathus aculeatus namely; Dhakuriabeel, Jashore (DBJ); Arial Kha River, Madaripur (AKRM); Nabaganga River, Jhenaidah (NRJ); Kopotakkha River, Jashore (KRJ) in Bangladesh.

Methodology: Completely 80 samples of M. aculeatus were collected (20 individuals from each population) for this study. Six meristic characters, 6 morphometric characters and 15 truss-based morphometric characters were measured for one-way analysis of variance (ANOVA) and Tukey-HSD post hoc test. Discriminant function analyses were also performed by using morphometric and truss-based morphometric characters to detect potential characters responsible for population separation.

Results: Completely 80 samples of M. aculeatus were collected (20 individuals from each population) for this study. Six meristic characters, 6 morphometric characters and 15 truss-based morphometric characters were measured for one-way analysis of variance (ANOVA) and Tukey-HSD post hoc test. Discriminant function analyses were also performed by using morphometric and truss-based morphometric characters to detect potential characters responsible for population separation.        

Interpretation: The baseline information derived from the present study would be useful for appropriate conservation of M. aculeatus populations as well as for the researchers for further investigation.      

Key words: Landmarks, Macrognathus aculeatus, Meristic variations,  Morphometric, Truss morphometrics

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