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Preliminary investigation of age analysis in crustacean species from the Indian coast, using growth bands

In: Crustaceana
Authors:
Rekha Devi Chakraborty Crustacean Fisheries Division, Central Marine Fisheries Research Institute, Post Box No. 1603, Ernakulam North, P.O., Kochi — 682018, Kerala, India

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https://orcid.org/0000-0002-3857-0231
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A. P. Gayathri Crustacean Fisheries Division, Central Marine Fisheries Research Institute, Post Box No. 1603, Ernakulam North, P.O., Kochi — 682018, Kerala, India

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P. Purushothaman Crustacean Fisheries Division, Central Marine Fisheries Research Institute, Post Box No. 1603, Ernakulam North, P.O., Kochi — 682018, Kerala, India

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G. Kuberan Crustacean Fisheries Division, Central Marine Fisheries Research Institute, Post Box No. 1603, Ernakulam North, P.O., Kochi — 682018, Kerala, India

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G. Maheswarudu Crustacean Fisheries Division, Central Marine Fisheries Research Institute, Post Box No. 1603, Ernakulam North, P.O., Kochi — 682018, Kerala, India

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E. M. Abdussamad Finfish Fisheries Division, Central Marine Fisheries Research Institute, Post Box No. 1603, Ernakulam North, P.O., Kochi — 682018, Kerala, India

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Abstract

The present study represents the first information on direct age determination based on band counts in the mesocardiac ossicle (gastric mill) and eyestalk, in Aristeus alcocki, Penaeus monodon, Penaeus indicus, Panulirus homarus, and Portunus sanguinolentus from India. The determination of growth bands is important in understanding the accurate age of a specimen for the effective management strategies for stock sustainability of the natural resource. Longitudinal sections of the eyestalk and meso-cardiac ossicle of the gastric mill were observed for growth band counts in all species except for P. homarus, where the growth bands were recorded only in the ossicle. Growth bands count five in females and four in males of A. alcocki, respectively. In the case of inshore prawns, two growth bands were observed in P. monodon and one growth band in P. indicus, five growth bands in P. homarus, and three in P. sanguinolentus.

Résumé

Cette étude présente la première information sur la détermination directe de l’âge basée sur le nombre des stries de l’osselet méso-cardiaque (moulin gastrique) et des pédoncules oculaires, chez Aristeus alcocki, Penaeus monodon, Penaeus indicus, Panulirus homarus, et Portunus sanguinolentus d’Inde. La détermination des stries de croissance est importante dans la compréhension de l’âge réel pour des stratégies efficaces de gestion en vue du maintien du stock des ressources naturelles. Des sections longitudinales des pédoncules oculaires et de l’osselet méso-cardiaque du moulin gastrique ont été observées pour le comptage des stries de croissance chez toutes les espèces sauf pour P. homarus, où les stries de croissance ont été examinées seulement dans l’osselet. Il a été compté respectivement, cinq stries de croissance chez les femelles et quatre chez les mâles de A. alcocki. Dans le cas des crevettes côtières, deux stries ont été observées chez P. monodon et une chez P. indicus, cinq stries chez P. homarus, et trois chez P. sanguinolentus.

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