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A simple egg box planting technique for estimating the survival of eggs deposited in stream gravel
Author(s) -
Harris G. S.
Publication year - 1973
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1973.tb04432.x
Subject(s) - biology , sowing , sampling (signal processing) , incubation , ecology , zoology , botany , engineering , filter (signal processing) , electrical engineering , biochemistry
A simple technique for estimating the survival of eggs during their incubation in stream gravels by planting eggs in specially designed egg boxes is described. This technique ensures that all the live eggs and alevins present in the gravel at the time of sampling can be recovered. Survival can be calculated accurately from the ratio of the number of live recovered to the number of eggs originally planted and the errors caused by the loss of dead eggs and escape of live alevins from the sample area are avoided.