Morphometric relationships and condition factor of the green tiger shrimp, Penaeus semisulcatus De Haan, 1844 (Decapoda, Penaeidae), from Palk Bay waters of Tamil Nadu

Rajkumar, M and Pillai, S Lakshmi and Midhun, M and Rajkumar, R and Thirumalaiselvan, S and Saravanan, Raju (2024) Morphometric relationships and condition factor of the green tiger shrimp, Penaeus semisulcatus De Haan, 1844 (Decapoda, Penaeidae), from Palk Bay waters of Tamil Nadu. Crustaceana, 97 (3-4). pp. 163-179. ISSN 1568-5403

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Abstract

Morphometric relationships and condition factors are essential for understanding any marine species’ development process, which aids in designing appropriate strategies for management and articulating their balance in the ecosystem — and this includes shrimps. Since only a few studies on these characteristics have been done in Penaeus semisulcatus over the last thirty years, constant updating of these criteria is required to successfully manage the shrimp fishery in Palk Bay. The CL-TW relationship demonstrates negative allometric growth in both males and females, whereas the TL-TW relationship exhibits positive allometric growth. In this present investigation, significant differences in slopes and elevations of the carapace length-total weight, total length-total weight, carapace length-total length, and total length-carapace length have been observed between sexes; considering the condition factors shown in the present investigation, the shrimps in Palk Bay were in good growing condition. This study has demonstrated that updated information on morphometric relationships would help fishery managers effectively manage the fisheries.

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