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Stocking density‐dependent growth and survival of Asian sun catfish, Horabagrus brachysoma (Gunther 1861) larvae
Author(s) -
Sahoo S. K.,
Giri S. S.,
Chandra S.,
Sahu A. K.
Publication year - 2010
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2010.01473.x
Subject(s) - stocking , biology , larva , hatchery , catfish , zoology , fishery , growth rate , body weight , ecology , fish <actinopterygii> , geometry , mathematics , endocrinology
Summary The aim of the experiment was to evaluate the growth and survival of Horabagrus brachysoma larvae at different stocking densities (3, 7, 13, 20, 27 and 33 larvae L −1 ) during their hatchery phase. Total length and wet weight of the larvae consistently decreased (P < 0.05) at the end of 14 and 28 days of rearing as the density increased. The specific growth rate was significantly (P < 0.05) highest at three larvae L −1 compared to the other five densities. The percent weight gain and survival of larvae was also highest at lowest density. The observation corroborates that catfish larvae can be reared at low densities in stagnant water conditions. Considering the value of larval growth, survival and overall weight gain, the stocking density of seven larvae L −1 has been identified as the maximum for larval rearing of H. brachysoma under hatchery conditions.