Genetic Identity Determines Risk of Post-Settlement Mortality of a Marine Fish

Vigliola, Laurent; Doherty, Peter; Meekan, Mark G.; Drown, Devin M.; Jones, Mark; Barber, Paul H.

doi:10.1890/06-0066

Cited by 66 publications

(65 citation statements)

References 91 publications

(104 reference statements)

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“…Positive selection can produce similar reductions in diversity and departures from neutrality as a population expansion, and the same star-like haplotype genealogy expected for neutral genes in a growing population can appear as low-frequency haplotypes accumulate around a selected haplotype. While this mode of selection appears to account for patterns of mtDNA variation in some species (e.g., Schizas et al 2001;Ballard and Whitlock 2004;Ballard and Rand 2005;Zink 2005) and has been inferred for some fishes (Á rnason 2004;Grant et al 2006;Vigliola et al 2007), the accrual of slightly deleterious mutations in whole-mitogenomic comparisons of several gadid species indicated a nearly neutral pattern of evolution (Marshall et al 2008).…”

Section: Demography Natural Selection and Contrasting Nuclear And Mmentioning

confidence: 88%

Highly Discordant Nuclear and Mitochondrial DNA Diversities in Atka Mackerel

et al. 2010

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Abstract.-Levels of neutral genetic diversity largely reflect effective population size (N e ), which is influenced by physical and biological environmental variables. While large populations of marine fishes generally harbor higher diversities than freshwater species, historical demography or the effects of natural selection may significantly reduce N e and differentially affect genomic diversities. Here, we surveyed levels of genetic diversity and examined genetic structure among populations of the Atka mackerel Pleurogrammus monopterygius across most of its geographic range by screening variation at nine nuclear microsatellite DNA markers (n ¼ 745) and in a 468-base-pair segment of the mitochondrial DNA (mtDNA) control region (n ¼ 119). Samples from Japan to the western Gulf of Alaska were collected between 2004 and 2006 at six locations, including temporal replicates at two sites. Microsatellite allele frequency homogeneity across the North Pacific indicated an apparent lack of genetic population substructure. While levels of polymorphism at microsatellite loci were typical for marine fishes (haplotype diversity h ¼ 0.34-0.96), mtDNA control region diversity was extremely low (nucleotide diversity ¼ 0.00007; h ¼ 0.033). Only three mtDNA haplotypes, two occurring as singletons, were detected among 119 individuals. The strong contrast between microsatellite and mtDNA diversities appears to be due to the smaller N e for mtDNA, perhaps resulting from population bottlenecks during postglacial colonizations of the central North Pacific or the effects of natural selection on mtDNA.

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Section: Demography Natural Selection and Contrasting Nuclear And Mmentioning

confidence: 88%

Highly Discordant Nuclear and Mitochondrial DNA Diversities in Atka Mackerel

et al. 2010

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“…Naïve settlers are faced with a new suite of predators that consume the majority of arrivals, creating mortality bottlenecks (Doherty et al 2004;Almany & Webster 2006). Survival during juvenile life may not be a matter of chance, but can depend on the size and growth rate of individuals (Searcy & Sponaugle 2001;Vigliola & Meekan 2002;Hoey & McCormick 2004;Vigliola et al 2007;Gagliano et al 2007;. The prevalence of selective mortality in this environment provides a unique opportunity to examine the role of behaviour as a determinant of growth and survivorship.…”

mentioning

confidence: 99%

Behavioural mediation of the costs and benefits of fast growth in a marine fish

et al. 2010

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“…Hare & Cowen 1997, Searcy & Sponaugle 2001, Sinclair et al 2002, Gagliano et al 2007, Swain et al 2007, Vigliola et al 2007, Hamilton et al 2008, Samhouri et al 2009, Grorud-Colvert & Sponaugle 2011, Rankin & Sponaugle 2011, but see Podolsky 2001. Although selection differentials provide useful information, they represent the sum of both direct selection (i.e.…”

Section: Selection Measurementsmentioning

confidence: 99%

Measuring selective mortality from otoliths and similar structures: a practical guide for describing multivariate selection from cross-sectional data

Johnson¹,

Grorud-Colvert²,

Rankin³

et al. 2012

Mar. Ecol. Prog. Ser.

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Selective mortality is an important process influencing both the dynamics of marine populations and the evolution of their life histories. Despite a large and growing interest in measuring selective mortality, studies of marine species can face some serious methodological and analytical challenges. In particular, many studies of selection in marine environments use a crosssectional approach in which fates of individuals are unknown but the distributions of trait values before and after a period of selective mortality may be compared. This approach is often used because many marine species have morphological structures (e.g. otoliths in fishes, statoliths in some invertebrates) that contain a permanent record of trait values. Although these structures often contain information on multiple, related traits, interpretation of selection measures has been limited because most studies of selection based on cross-sectional data consider selection 1 trait at a time, despite known problems with trait correlations. Here, we detail how cross-sectional data can be analyzed within a multivariate framework and provide a practical guide for conducting these types of analyses. We illustrate these methods by applying them to empirical studies of selective mortality on early life history traits in 2 species of reef fish. These examples demonstrate that analyzing selective mortality in a multivariate framework can vastly improve estimates of selection and yield new insight into how combinations of traits can interact to influence survival. Accompanying the paper are 2 R scripts that can be used to perform the calculations described here and assist with visualizing selection on multiple traits.

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Genetic Identity Determines Risk of Post-Settlement Mortality of a Marine Fish

Cited by 66 publications

References 91 publications

Highly Discordant Nuclear and Mitochondrial DNA Diversities in Atka Mackerel

Highly Discordant Nuclear and Mitochondrial DNA Diversities in Atka Mackerel

Behavioural mediation of the costs and benefits of fast growth in a marine fish

Measuring selective mortality from otoliths and similar structures: a practical guide for describing multivariate selection from cross-sectional data

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