Anne Rebecca, A (2020) DOUBLE EXTIRPATION OF EYESTALK IN SPIRALOTHELPHUSA HYDRODROMA INDUCED GONADAL MATURATION. Journal of Aquaculture in the Tropics, 34 (3-4). pp. 147-160. ISSN 2229-5380

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Abstract

The suitability of bilateral eyestalk ablation as a means of induced breeding technique in S. hydrodroma was tested under laboratory conditions by considering growth and survival indices, reproductive indices, biochemical and histological indices. The daily growth rate (g) was higher for ablated males (0.3±0.2) against 0.16±0.09 in control males. A positive correlation with feed intake of 0.71±0.04 (g)
in ablated males against 0.62±0.84 in control males and a negative correlation with Hepatosomatic Index (%) of 7.02±2.4 against 13.77±3.2 are recorded. Female crabs shows less survival rate (%) compared to males (64±12.7/88±10.33). Ovarian and testicular index in comparison to control were found to be higher (0.2±0.08/0.15±0.02 and 2.6±0.33/1.08±0.06 respectively). Nutrient mobilization
was evident from decreased muscular protein and carbohydrates as of hepatopancreatic lipid after extirpation and increased gonadal proteins, carbohydrates and lipids. The double extirpation procedure increased the number of oocytes, follicle diameter and number in females and an increase spermatozoa and spermatocytes in males as reveled by histological indices.

Item Type: Article
Uncontrolled Keywords: Freshwater crab aquaculture, S. hydrodroma, Bilateral eyestalk ablation, Induced breeding
Divisions: PSG College of Arts and Science > Department of Zoology
Depositing User: Mr Team Mosys
Date Deposited: 28 Feb 2022 05:37
Last Modified: 28 Feb 2022 05:37
URI: http://ir.psgcas.ac.in/id/eprint/489

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