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Growth of juveniles of White Sea common wolffish, Anarhichas lupus L., in captivity
Author(s) -
Pavlov D A
Publication year - 1995
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/j.1365-2109.1995.tb00902.x
Subject(s) - biology , captivity , stocking , zoology , larva , hatchling , growth rate , fish <actinopterygii> , fishery , ecology , hatching , geometry , mathematics
Larvae of the common wolffish. Anarhichas lupus L., hatched from artificially inseminated eggs incubated in the laboratory, were reared on live foods at temperatures ranging from 2 to 10 o C. Temperatures over 8 o C were too high for newly hatched larvae, but after rearing for 17 days at an average temperature of 6.5 o C, the young could tolerate 11 o C. The maximum growth rate was observed in the process of keeping of fish during the first 5 months of growing at a temperature gradually increasing up to 14 o C. At an age of 577days the average weight of the young in two size groups was 160 and 248 g. A stocking density or five fish 1 −1 is satisfactory for young at weight less than 0.2 g. Subsequent growth during 2 months at density of 3‐4 fish 1 −1 was delayed, compared with that at density of one fish1 −1 , and all fish reared at high density were infected by Trichodina sp. The growth rate in captivity is compared with that in nature.