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

Autor:	Liew HJ; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Science, Harbin, China.; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China., Rahmah S; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia., Tang PW; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia., Waiho K; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China.; Center for Chemical Biology, Universiti Sains Malaysia, Minden, Malaysia., Fazhan H; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China., Rasdi NW; Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia., Hamin SIA; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia., Mazelan S; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China., Muda S; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China., Lim LS; Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia., Chen YM; Bachelor Degree Program in Marine Biotechnology, College of Life Science, National Taiwan Ocean University, Keelung, Taiwan.; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan., Chang YM; Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Science, Harbin, China., Liang LQ; Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Science, Harbin, China., Ghaffar MA; Higher Institution Centre of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.; Institute of Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2022 Jul 19; Vol. 8 (7), pp. e09989. Date of Electronic Publication: 2022 Jul 19 (Print Publication: 2022).
DOI:	10.1016/j.heliyon.2022.e09989
Abstrakt:	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. Competing Interests: The authors declare no conflict of interest. (© 2022 The Author(s).)
Databáze:	MEDLINE
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