Sexual dimorphism in external morphology and pelvis of the lesser bandicoot rat, Bandicota bengalensis (Gray, ۱۸۳۵) (Mammalia: Rodentia: Muridae)
Publish place: Journal of Animal Diversity، Vol: 5، Issue: 2
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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JR_JAD-5-2_005
تاریخ نمایه سازی: 24 آبان 1402
Abstract:
We used linear morphometric measurements to assess secondary sexual dimorphism in the external traits and pelvis of the lesser bandicoot rat, Bandicota bengalensis (Gray). Multivariate analysis of variance revealed significant difference between the sexes in both external (Wilks' lambda = ۰.۵۴۲, F = ۳.۳۷۸, P < ۰.۰۵) and pelvis measurements (Wilks' lambda = ۰.۲۳۸, F = ۱۰.۰۵, P < ۰.۰۵). Males were larger than females in most of the external traits. In contrast, females were larger in most variables of the pelvis. Separation between the sexes was also demonstrated in the discriminant analysis. Although allometric slopes did not differ between the sexes, means adjusted for allometry were sexually dimorphic in five out of seven variables of the pelvis. In conclusion, our results revealed differential patterns of secondary sexual dimorphism for the external morphology and pelvis in B. bengalensis. These patterns are explained with respect to the accessible evolutionary theories on mammalian sexual dimorphism.
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Authors
Pritom Roy
Department of Zoology, Faculty of Biological Sciences, University of Chittagong, Chattogram-۴۳۳۱, Bangladesh
Antara Das
Department of Zoology, Faculty of Biological Sciences, University of Chittagong, Chattogram-۴۳۳۱, Bangladesh
Md. Asir Uddin
Department of Zoology, Faculty of Biological Sciences, University of Chittagong, Chattogram-۴۳۳۱, Bangladesh
Jadab Kumar Biswas
Department of Zoology, Faculty of Biological Sciences, University of Chittagong, Chattogram-۴۳۳۱, Bangladesh
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