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International Journal of Zoology and Applied Biosciences Research Article
Morphometric analysis of the crab, Atergatis integerrimus (Lamarck, 1818) (Decapoda, Brachyura, Xanthidea)
R. Thanamalini and A. Shyla Suganthi
Year : 2018 | Volume: 3 | Issue: 1 | Pages: 48-56
Received on: 01/14/2018
Revised on: 01/12/2018
Accepted on: 01/23/2018
Published on: 01/26/2018
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R. Thanamalini and A. Shyla Suganthi( 2018).
Morphometric analysis of the crab, Atergatis integerrimus (Lamarck, 1818) (Decapoda, Brachyura, Xanthidea)
. International Journal of Zoology and Applied Biosciences, 3( 1), 48-56.
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Abstract
The present paper envisages the relative growth of the xanthid crab, Atergatis integerrimus, collected (a sum of 256 crabs) from the benthic regions of Muttom. Allometry of the crabs were obtained for carapace length (CL) and width (CW), chelipede, propodus length (CPL), abdomen width in females (AW) and gonopod length (GL) in males. The size of the crabs (CW) ranged from 7-10.5 cm and 8.3-12.2 cm for males and females respectively. The AW grew in positive allometry: higher in juveniles (b=2.88) than adults (b=1.07). In males, the gonopod as well as the propodus length of the chelae showed positive allometry for juveniles while negative for adults. CPL vs CW demonstrated positive allometry to males and negative to females. The relationship between GL and CW based on the equation Y = aXb, revealed that the males reached their sexual maturity ~7 cm for CW. The females arrived their sexual maturity at 8.3 cm based on the relationship of AW and CW.
Keywords
Morphometry, Atergatis integerrimus, Allometry, Brachyurans, Crustaceans, Relative Growth.
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© The Author(s) 2025. This article is published by International Journal of Zoology and Applied Biosciences under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
