Low water pH depressed growth and early development of giant freshwater prawn Macrobrachium rosenbergii larvae

文献类型： 外文期刊

第一作者： Liew, Hon Jung

作者： Liew, Hon Jung;Rahmah, Sharifah;Tang, Pei Wen;Waiho, Khor;Fazhan, Hana fiah;Hamin, Siti Izzah Athirah;Mazelan, Suhairi;Muda, Sabri;Abd Ghaffar, Mazlan;Rahmah, Sharifah;Tang, Pei Wen;Rasdi, Nadiah Wan;Hamin, Siti Izzah Athirah;Abd Ghaffar, Mazlan;Abd Ghaffar, Mazlan;Rasdi, Nadiah Wan;Lim, Leong-Seng;Chen, Young-Mao;Chen, Young-Mao;Liew, Hon Jung;Chang, Yu Mei;Liang, Li Qun;Liew, Hon Jung;Waiho, Khor;Fazhan, Hana fiah;Mazelan, Suhairi;Muda, Sabri;Waiho, Khor

作者机构：

关键词： Acidification; Aquaculture; Environment; Pollution; Shellfish; Shrimp

期刊名称：HELIYON （ 影响因子：3.776； 五年影响因子：3.752 ）

ISSN：

年卷期： 2022 年 8 卷 7 期

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收录情况： SCI

摘要： Macrobrachium rosenbergii is one of the shellfish species with high aquaculture value due to its increasing market demand. However, the comparatively low production volume compared to demand coupled with the rapid decline of the natural environment, consequently, drives the potential depletion of the wild population. The decrease in water pH related to anthropogenic pollution is one of the most critical factors affecting the early life performances of M. rosenbergii. Therefore, this study was designed to examine the effect of low water pH on feeding, growth and development of M. rosenbergii early life stages. Experimental water pH was set as neutral (7.7 +/- 0.4); mild-acidic (6.4 +/- 0.5) and acidic (5.4 +/- 0.2) with triplication at a stocking density of 2 larvae/L for 30 days. As expected, M. rosenbergii larvae were highly sensitive to acidic pH with no larvae survived beyond 48 h of exposure. Feeding, survival and growth of larvae were adversely affected by mild-acidic pH exposure as compared to neutral pH. Larvae exposed to mild-acidic water pH experienced a prolonged larval period and only metamorphosed to the post-larval stage at day-30. Whilst under neutral water pH, larval that metamorphosed to post-larval was first observed on day-23. The negative impact of decreased pH, even in mild-acidic pH exposure, on the feeding, survival, growth and development of M. rosenbergii larvae highlights the urgency of periodic pH monitoring during M. rosenbergii larviculture.

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