Relative growth and sexual maturity in the marine crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) along the southwest coast of India


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Authors

  • K K Sukumaran School of Ocean Sciences, Kodibag, Karwar - 521 303, India
  • B Neelakantan School of Ocean Sciences, Kodibag, Karwar - 521 303, India

Abstract

The relative growth of the secondary sexual characters like chela in male and
abdomen in female of Portunus (Portunus) sanguinolentus and P. (P.) pelagicus
was studied and the results presented. Morphological analysis revealed that
transitions in the cheliped dimensions and abdominal widths of these crabs
are related to prepubertal and postpubertal changes associated with gonadal
development and onset of sexual maturity. The study indicated that the
pubertal moult occurred in P. (P.) sanguinolentus and P. (P) pelagicus at a
carapace width of 85-90 mm in males and 80-90 mm in females as evident
from sudden increase in morphological characterisitics. The allometric
relations between the set of characters studied suggested that the relationships
were positive and significant.

Author Biographies

  • K K Sukumaran, School of Ocean Sciences, Kodibag, Karwar - 521 303, India
    School of Ocean Sciences, Kodibag, Karwar - 521 303, India
  • B Neelakantan, School of Ocean Sciences, Kodibag, Karwar - 521 303, India
    School of Ocean Sciences, Kodibag, Karwar - 521 303, India

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Sukumaran, K. K., & Neelakantan, B. (2011). Relative growth and sexual maturity in the marine crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) along the southwest coast of India. Indian Journal of Fisheries, 43(3), 215-223. https://epubs.icar.org.in/index.php/IJF/article/view/10133