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Egg size and growth in steelhead Oncorhynchus mykiss
Author(s) -
Self Katharine E.,
Schreck Carl B.,
Cogliati Karen M.,
Billman Eric J.,
Noakes David L. G.
Publication year - 2018
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/jfb.13764
Subject(s) - biology , hatching , rainbow trout , fish <actinopterygii> , fishery , life history , growth rate , zoology , oncorhynchus , ecology , geometry , mathematics
The effects of egg size on early development and growth of steelhead Oncorhynchus mykiss were recorded for more than 200 days following hatching. Fish from smaller eggs hatched sooner and at a smaller size than fish from larger eggs, but fish from smaller eggs showed consistently higher growth rates than fish from larger eggs. Since many life‐history attributes appear to be determined by size or growth rate at age during the first year, egg size could be a significant predictor of important changes in the life history of individuals.