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Prediction, from temperature, of eyeing, hatching and ‘swim‐up’ times for salmonid embryos
Author(s) -
CRISP D. T.
Publication year - 1988
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1988.tb00325.x
Subject(s) - salmo , hatching , hatchery , fishery , biology , oncorhynchus , salmonidae , zoology , ecology , fish <actinopterygii>
SUMMARY. 1. The literature contains a number of curves relating time (days) required for median hatch (=D 2 ) to water temperature (T,°C) for the eggs of several salmonid fishes. There are relatively few data on the relationships between time to median eyed (= D 1 ), days) or time to median swim‐up (= D 3 , days) and temperature. 2. From published data, over most of the range 0‐9.5°C, approximate relationships are D,=0.5D 2 for Atlantic salmon (Salmo salar L.) and D3 = 1.7D 2 for eight species of Salmo and Oncorhynchus. 3. Field and hatchery tests suggest that these are useful empirical models for approximate prediction of D 1 and D 3 from D 2 for most salmonids.