Ecological and life history characteristics predict population genetic divergence of two salmonids in the same landscape

Whiteley, Andrew R.; Spruell, Paul; Allendorf, Fred W.

doi:10.1111/j.1365-294x.2004.02365.x

Cited by 82 publications

(114 citation statements)

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“…Species and landscape interaction cannot be limited to the landscape perspective as inherent peculiarities across species influence varying response patterns to the same landscape effects. It is also important to examine inherent variations among species as those that are intrinsically different but share a common landscape may either show similar patterns of interaction with the landscape (e.g., Gagnon & Angers, 2006; Petren, Grant, Grant, & Keller, 2005) or respond uniquely and exhibit distinct patterns despite a shared habitat (e.g., Short & Caterino, 2009; Whiteley, Spruell, & Allendorf, 2004). Thus, a species‐centered comparative approach in conducting landscape genetic studies will refine previous generalizations and will avoid casual association of species with a generic roster of dispersal corridors and landscape barriers.…”

Section: Discussionmentioning

confidence: 99%

Syntopic frogs reveal different patterns of interaction with the landscape: A comparative landscape genetic study of Pelophylax nigromaculatus and Fejervarya limnocharis from central China

Garcia

Ivy

2017

Ecology and Evolution

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Amphibians are often considered excellent environmental indicator species. Natural and man‐made landscape features are known to form effective genetic barriers to amphibian populations; however, amphibians with different characteristics may have different species–landscape interaction patterns. We conducted a comparative landscape genetic analysis of two closely related syntopic frog species from central China, Pelophylax nigromaculatus (PN) and Fejervarya limnocharis (FL). These two species differ in several key life history traits; PN has a larger body size and larger clutch size, and reaches sexual maturity later than FL. Microsatellite DNA data were collected and analyzed using conventional (F ST, isolation by distance (IBD), AMOVA) and recently developed (Bayesian assignment test, isolation by resistance) landscape genetic methods. As predicted, a higher level of population structure in FL (F ST′ = 0.401) than in PN (F ST′ = 0.354) was detected, in addition to FL displaying strong IBD patterns (r = .861) unlike PN (r = .073). A general north–south break in FL populations was detected, consistent with the IBD pattern, while PN exhibited clustering of northern‐ and southern‐most populations, suggestive of altered dispersal patterns. Species‐specific resistant landscape features were also identified, with roads and land cover the main cause of resistance to FL, and elevation the main influence on PN. These different species–landscape interactions can be explained mostly by their life history traits, revealing that closely related and ecologically similar species have different responses to the same landscape features. Comparative landscape genetic studies are important in detecting such differences and refining generalizations about amphibians in monitoring environmental changes.

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Section: Discussionmentioning

confidence: 99%

Syntopic frogs reveal different patterns of interaction with the landscape: A comparative landscape genetic study of Pelophylax nigromaculatus and Fejervarya limnocharis from central China

Garcia

Ivy

2017

Ecology and Evolution

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“…Variation in population structuring has been attributed to species differences in spawning ecology, dispersal potential and effective population size (Castric and Bernatchez 2004;Whiteley et al 2004). Considering these factors, black redhorse are not likely to show strong population structure within watersheds.…”

Section: Population Genetic Structurementioning

confidence: 98%

Population structure and genetic diversity of black redhorse (Moxostoma duquesnei) in a highly fragmented watershed

et al. 2007

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Dams have the potential to affect population size and connectivity, reduce genetic diversity, and increase genetic differences among isolated riverine fish populations. Previous research has reported adverse effects on the distribution and demographics of black redhorse (Moxostoma duquesnei), a threatened fish species in Canada. However, effects on genetic diversity and population structure are unknown. We used microsatellite DNA markers to assess the number of genetic populations in the Grand River (Ontario) and to test whether dams have resulted in a loss of genetic diversity and increased genetic differentiation among populations. Three hundred and seventy-seven individuals from eight Grand River sites were genotyped at eight microsatellite loci. Measures of genetic diversity were moderately high and not significantly different among populations; strong evidence of recent population bottlenecks was not detected. Pairwise F ST and exact tests identified weak (global F ST = 0.011) but statistically significant population structure, although little population structuring was detected using either genetic distances or an individual-based clustering method. Neither geographic distance nor the number of intervening dams were correlated with pairwise differences among populations. Tests for regional equilibrium indicate that Grand River populations were either in equilibrium between gene flow and genetic drift or that gene flow is more influential than drift. While studies on other species have identified strong dam-related effects on genetic diversity and population structure, this study suggests that barrier permeability, river fragment length and the ecological characteristics of affected species can counterbalance dam-related effects.

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“…Previous research using this experimental design found predictable patterns of genetic variation of fish and invertebrate species in watersheds on the basis of their ability to ascend stream gradients and migrate over long distances (Monaghan et al 2002;Whiteley et al 2004;de Kerckhove 2005). Another promising approach would be the study of the same organism in different landscape arrangements (e.g., Castric et al 2001).…”

Section: Discussionmentioning

confidence: 99%

The Maintenance of Genetic Variation Due to Asymmetric Gene Flow in Dendritic Metapopulations

Morrissey¹,

Kerckhove²

2009

The American Naturalist

168

161

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Dendritic landscapes can have ecological properties that differ importantly from simpler spatial arrangements of habitats. Most dendritic landscapes are structured by elevation, and therefore, migration is likely to be directionally biased. While the populationgenetic consequences of both dendritic landscape arrangements and asymmetric migration have begun to be studied, these processes have not been considered together. Simple conceptual models predict that if migration into branch (headwater) populations is limited, such populations can act as reservoirs for potentially unique alleles. As a consequence of the fact that dendritic landscapes have, by definition, more branches than internal habitat patches, this process may lead to the maintenance of higher overall genetic diversities in metapopulations inhabiting dendritic networks where migration is directionally biased. Here we begin to address the generality of these simple predictions using genetic models and a review of empirical literature. We show, for a range of demographic parameters, that dendritic systems with asymmetric migration can maintain levels of genetic variation that are very different, sometimes very elevated, compared with more classical models of geographical population structure. Furthermore, predicted patterns of genetic variation within metapopulations-that is, stepwise increases in genetic diversity at nodesdo occur in some empirical data.

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Ecological and life history characteristics predict population genetic divergence of two salmonids in the same landscape

Cited by 82 publications

References 100 publications

Syntopic frogs reveal different patterns of interaction with the landscape: A comparative landscape genetic study of Pelophylax nigromaculatus and Fejervarya limnocharis from central China

Syntopic frogs reveal different patterns of interaction with the landscape: A comparative landscape genetic study of Pelophylax nigromaculatus and Fejervarya limnocharis from central China

Population structure and genetic diversity of black redhorse (Moxostoma duquesnei) in a highly fragmented watershed

The Maintenance of Genetic Variation Due to Asymmetric Gene Flow in Dendritic Metapopulations

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