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Rearing of European grayling, Thymallus thymallus L., larvae using dry and live food
Author(s) -
LUCZYNSKI M.,
ZAPOROWSKI R. R.,
GOLONKA J. S.
Publication year - 1986
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.1365-2109.1986.tb00114.x
Subject(s) - grayling , biology , hatching , zooplankton , larva , zoology , live food , dry weight , fishery , fish <actinopterygii> , ecology , aquaculture , agronomy
. European grayling, Thymallus thymallus L., larvae, after hatching, were fed solely on a dry food diet and compared to those fed live zooplankton. After 28 days of rearing at temperatures ranging from 15·0°C to 18·3°C (mean, 16·4°C) fish fed the dry diet reached 0·21 g individual wet weight and 31mm in total length; those fed zooplankton reached 0·13g and 27·5 mm respectively. The survival rate of fish fed the dry diet was higher (56·6%) than that of fish fed the live food (40·7%). Results are discussed in the light of the development of the alimentary tract in the early ontogeny of grayling.