2014
DOI: 10.1002/ece3.1113
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Is isolation by adaptation driving genetic divergence among proximate Dolly Varden char populations?

Abstract: Numerous studies of population genetics in salmonids and other anadromous fishes have revealed that population structure is generally organized into geographic hierarchies (isolation by distance), but significant structure can exist in proximate populations due to varying selective pressures (isolation by adaptation). In Chignik Lakes, Alaska, anadromous Dolly Varden char (Salvelinus malma) spawn in nearly all accessible streams throughout the watershed, including those draining directly to an estuary, Chignik… Show more

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Cited by 23 publications
(34 citation statements)
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“…Isolation‐by‐distance population genetic structure was found in the O. m. masou populations, as has frequently been found in other anadromous salmonids (e.g. Bond, Crane, Larson, & Quinn, ; Hansen, Fraser, Meier, & Mensberg, ; Yamamoto, Morita, & Sahashi, ). Most O. m. masou populations exhibit a diverse array of migration strategies, and include migrant and non‐migrant individuals within populations.…”
Section: Discussionsupporting
confidence: 70%
“…Isolation‐by‐distance population genetic structure was found in the O. m. masou populations, as has frequently been found in other anadromous salmonids (e.g. Bond, Crane, Larson, & Quinn, ; Hansen, Fraser, Meier, & Mensberg, ; Yamamoto, Morita, & Sahashi, ). Most O. m. masou populations exhibit a diverse array of migration strategies, and include migrant and non‐migrant individuals within populations.…”
Section: Discussionsupporting
confidence: 70%
“…In addition, a part of the reported strays may just spend time in foreign watercourses, to feed or avoid adverse environmental conditions (King, Hillman, Elsmere, Stockley, & Stevens, 2016). This parallels the isolation-by-distance effect reported from salmonid studies elsewhere (Bond, Crane, Larson, & Quinn, 2014;Campos, Posada, Caballero, & Moran, 2007;Hansen & Mensberg, 1998). This parallels the isolation-by-distance effect reported from salmonid studies elsewhere (Bond, Crane, Larson, & Quinn, 2014;Campos, Posada, Caballero, & Moran, 2007;Hansen & Mensberg, 1998).…”
supporting
confidence: 60%
“…The lack of gene flow (in at least the upstream direction) as well as the general decline in stream and habitat size and likely smaller effective population sizes in above-waterfall populations has probably contributed to increased divergence between proximate isolated and nonisolated populations (Whiteley et al 2010). Furthermore, natural selection acting in divergent directions, as a result of unique selective pressures operating in different environments (if above-and below-waterfall habitats differ substantially), may also be contributing to the elevated degree of divergence (Langerhans et al 2007;Bond et al 2014).…”
Section: Determinants Of Population Structurementioning
confidence: 94%
“…Given the marked variation in its life history, demography, and habitats (e.g., COSEWIC 2010; Mochnacz et al 2010), northern Dolly Varden of Canada's western Arctic provide an excellent opportunity to assess the influences of these factors on population genetic variation and structure. While work in southern areas has implicated the effects of population history (e.g., impacts of glaciation; Taylor et al 2001;Redenbach and Taylor 2002), contemporary landscape features (Koizumi et al 2006a), demography, (Koizumi et al 2006b, and natural selection (Bond et al 2014) on population genetic variation and structure in Dolly Varden, comparatively less work has been conducted in Canada's western Arctic populations. Northern Dolly Varden in Canada has been assessed as "Special Concern" by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) (COSEWIC 2010;Cook et al 2013).…”
Section: Introductionmentioning
confidence: 99%