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Thermal challenge of the Indian shrimp Penaeus indicus
Author(s) -
Hoang Tung,
Bui Thi Hong Hanh,
Ho Hai Co,
Le Ngoc Phuong Thanh
Publication year - 2020
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.14493
Subject(s) - shrimp , biology , penaeus , zoology , fishery , aquaculture , survival rate , fish <actinopterygii> , medicine
This study investigated short‐term effects of increasing water temperature from 27 to 41°C on survival and feed consumption of Penaeus indicus at three different ages: PL 25 (postlarvae 25 days old), PL 50 and PL 90 . For each age group, water temperature was maintained at 27°C in the control, but increased to 32, 35, 38 and 41°C at a rate of 1°C every eight hours. The temperature was then kept stable until the end of the 7‐day experiment. Results showed that increasing water temperature affected both survival and feed consumption of the experimental shrimps ( p < .01). Survival was highest at 32 and 35°C ranging from 93.8% to 100%, but significantly reduced to 40.0%–81.6% at 38°C. No shrimp survived the 41°C treatment. PL 25 were more tolerant to 38–41°C than PL 50 and PL 90 in terms of survival. Increasing water temperature had no effects on feed consumption of PL 25 ( p > .05). For PL 50 and PL 90, feed consumption significantly increased at 38 and 41°C ( p < .01) and was similar within the range of 27–35°C. This study suggests that P. indicus in tropical areas can tolerate water temperatures of at least 35°C and should be considered for farming during the summer time.