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The effects of water temperature and stocking density on survival, feeding and growth of the juveniles of the hybrid yellow catfish from Pelteobagrus fulvidraco (♀) × Pelteobagrus vachelli (♂)
Author(s) -
Zhang Guosong,
Yin Shaowu,
Wang Yayuan,
Li Li,
Wang Xiaolu,
Ding Yandong,
Zang Xue,
Zhang Hongwei,
Jia Yihe,
Hu Yali
Publication year - 2016
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.12734
Subject(s) - stocking , biology , catfish , zoology , juvenile , aquaculture , fishery , growth rate , fish <actinopterygii> , ecology , mathematics , geometry
In this study, we aimed to investigate the effects of water temperature and stocking density on the survival, feeding and growth of the juveniles of the hybrid yellow catfish from Pelteobagrus fulvidraco (♀) × Pelteobagrus vachelli (♂) using the parameters as follows: survival rate (%), feeding rate (% day −1 ), feed conversion ratio, specific growth rate (% day −1 ), coefficient of variation (%), productivity (P, g m −3 day −1 ) and condition factor. We reared the juvenile fish (3.25 ± 0.21 g) at 12 water temperature levels and six stocking density levels (each level included three aquaria in two batches of experiments). The results showed that all groups survived at a temperature range of ≤35°C during a 46‐day experimental period, and they could achieve a high growth at a water temperature range of 26–32°C. The optimal temperature for growth was 29.8°C. Productivity peaked at a stocking density of 1.9 kg m −3 . Our results indicated that the hybrid is very suitable for commercial aquaculture.