Variation in salinity tolerance between and within anadromous subpopulations of pike (Esox 1ucius).

ABSTRACT: Environmental heterogeneity is a key determinant of genetic and phenotypic diversity. Stable and homogenous environments tends to result in evolution of specialism and local adaptations, while temporally unpredictable environments may maintain a diversity of specialists, promote generalist strategies, or favour diversified bet hedging strategies. We compared salinity tolerance between two anadromous subpopulations of pike (Esox Lucius) that utilize freshwater spawning sites with different salinity regimes. Eggs from each population were artificially fertilized and incubated in a salinity gradient (0, 3, 5, 7, and 9 psu) using a split-brood design. Effects on embryonic development, hatching success, survival of larvae, and fry body length were compared between populations and families. The

SUBMITTER: Sunde J 

PROVIDER: S-EPMC5758576 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature