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Spawning and emergence phenology of bull trout Salvelinus confluentus under differing thermal regimes
Author(s) -
Austin Catherine S.,
Essington Timothy E.,
Quinn Thomas P.
Publication year - 2019
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.13864
Subject(s) - biology , trout , phenology , threatened species , salvelinus , ecology , oncorhynchus , fishery , adaptation (eye) , salmonidae , habitat , fish <actinopterygii> , rainbow trout , neuroscience
Median bull trout Salvelinus confluentus breeding was 2 weeks earlier in a cool stream than in a proximate warmer stream, aligning with expectations for salmonids, followed by emergence timing calculated to be 6 weeks later in the cool stream than the warm stream. This pattern is consistent with both site‐specific adaptation and thermal spawning threshold hypotheses for life‐history event timing in this threatened species.