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Comparative Survival from Salmon ( Salmo salar L.) Stocking with Eyed and Green Ova in an Upland Stream
Author(s) -
Kennedy C. J. A.,
Strange C. D.
Publication year - 1981
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.1365-2109.1981.tb00008.x
Subject(s) - biology , electrofishing , salmo , stocking , context (archaeology) , fishery , trout , brown trout , competition (biology) , population , overall survival , survival rate , ecology , fish <actinopterygii> , demography , medicine , paleontology , surgery , sociology
The survival rates of salmon stocked as eyed ova and green eggs in an upland trout stream were compared by electrofishing a number of sites during their first summer and at the end of their first complete year. The results were compared with the survival rates in the naturally spawning trout population. It was found that the survival rates from eyed ova were considerably better than that from green eggs and the results were discussed in the context of environmental effects and territorial competition in emerging fry.