caa a22 4500 606227245 CHVBK 20210128101157.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10641-015-0399-z doi (NATIONALLICENCE)springer-10.1007/s10641-015-0399-z Evidence of between-population variation in morphology and thermal plasticity of agonistic behavior in two genetically distinct populations of steelhead ( Oncorhynchus mykiss ) [Elektronische Daten] [Katy Doctor, Barry Berejikian, Gary Winans, Donald Van Doornik] Morphological and behavioral traits affect an individual's fitness and can reflect both evolutionary adaptations and phenotypic responses to environmental conditions. We conducted a reciprocal transplant ‘common garden' experiment at two temperature regimes to test for phenotypic plasticity in morphological and behavioral traits between and within two populations of steelhead Oncorhynchus mykiss from Hood Canal, WA, USA. The Dewatto River and Duckabush River populations exhibited asymmetric changes in body morphology in response to the two temperature regimes, suggesting both between- and within-population variation in morphological plasticity. In most cases, within population variation in body shapes was less than between temperature regimes. Most notably the populations differed in dorso-ventral and caudal regions, body depth, and head shape, with some differences on the anterior-posterior placement of the dorsal and ventral fins. The warm temperature regime caused more exploratory behavior, more charging behavior, and higher fin erosion, and population effects included slight differences in feeding aggression frequency. Morphology appeared to vary more between populations than between temperature regimes, and behavioral traits varied more between temperature regimes than between populations. Morphological variation may reflect adaptations to variation in freshwater habitat conditions, and both populations show behavioral plasticity in response to temperature. This study sheds new light on the role of genetic and environmental influence on morphology and behavior in juvenile steelhead. Springer Science+Business Media Dordrecht (outside the USA), 2015 Morphology nationallicence Behavior nationallicence Phenotypic plasticity nationallicence Temperature nationallicence Common garden nationallicence Steelhead nationallicence Doctor Katy Ocean Associates, Inc. under contract to Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Manchester Research Station, 7305 E. Beach Dr., 98366, Port Orchard, WA, USA aut Berejikian Barry Environmental and Fisheries Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Manchester Research Station, 7305 E. Beach Dr., 98366, Port Orchard, WA, USA aut Winans Gary Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 2725 Montlake Boulevard East, 98112, Seattle, WA, USA aut Van Doornik Donald Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Manchester Research Station, 7305 E. Beach Dr., 98366, Port Orchard, WA, USA aut Environmental Biology of Fishes Springer Netherlands 98/7(2015-07-01), 1803-1821 0378-1909 98:7<1803 2015 98 10641 https://doi.org/10.1007/s10641-015-0399-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-015-0399-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Doctor Katy Ocean Associates, Inc. under contract to Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Manchester Research Station, 7305 E. Beach Dr., 98366, Port Orchard, WA, USA aut NATIONALLICENCE 700 1- Berejikian Barry Environmental and Fisheries Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Manchester Research Station, 7305 E. Beach Dr., 98366, Port Orchard, WA, USA aut NATIONALLICENCE 700 1- Winans Gary Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 2725 Montlake Boulevard East, 98112, Seattle, WA, USA aut NATIONALLICENCE 700 1- Van Doornik Donald Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, Manchester Research Station, 7305 E. Beach Dr., 98366, Port Orchard, WA, USA aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/7(2015-07-01), 1803-1821 0378-1909 98:7<1803 2015 98 10641