Application of The Temperature Shock Method (Heat Shock) on Pearl Oyster (Pinctada maxima) Hatcheries

Journal of Aquaculture Development and Environment Pub Date : 2022-03-01 DOI:10.31002/jade.v5i1.5666

Lusiana BR Ritonga

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Abstract

The low production and quality of pearls produced from the cultivation process, one of which is caused by the less than optimal quality of pearl oysters. Spawning is a determining factor in hatchery activities. Therefore, in an effort to increase production, it requires strategies and improvements in the pearl oyster spawning process. This study aims to apply the temperature shock method as an effort to increase productivity and success rate of pearl oyster hatchery. The results of observations on gonad maturity in pearl oyster broodstock obtained data from a total of 200 broods consisting of 135 male broods and 75 female brooders aged 3.5 years, the percentage of perfectly gonadally mature broodstock was 11.85% and 12%, respectively a total of 25 individuals. The results of spawning pearl oyster broodstock through the temperature shock method of a total of 18 broods observed were 12 brooders or 66.7% which spawned perfectly. The results of the observation of the spawning process of pearl oyster broodstock showed that from 8 female broodstock ± 90,000,000 eggs were obtained with a hatching rate of 70% with a spat harvest of ± 1,575,000 individuals or 2.5% of the total hatched larvae final yield.

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温度冲击法(Heat Shock)在珍珠贝孵化场的应用

养殖过程中产生的珍珠产量和质量低，其中一个原因是珍珠牡蛎的质量不理想。产卵是孵化场活动的决定因素。因此，为了提高产量，需要在珍珠牡蛎产卵过程中采取策略和改进措施。本研究旨在应用温度冲击法提高珍珠贝孵化场的产量和成功率。对35岁以上的珠蚌种鱼进行了性腺成熟的观察，其中雄种鱼135条，雌种鱼75条，共200条，性腺完全成熟的比例分别为11.85%和12%，共25条。温度冲击法对18条珠蚌进行产卵试验，结果显示，12条珠蚌产卵成功率为66.7%。对珍珠贝产卵过程的观察结果表明，8条母贝共产卵约9000万枚，孵化率为70%，产卵约157.5万枚，占总孵化量的2.5%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Aquaculture Development and Environment

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