Genetic heterogeneity in a single year-class from a panmictic population of adult blue rockfish (Sebastes mystinus)

Burford, Martha O.; Larson, Ralph J.

doi:10.1007/s00227-006-0475-1

Cited by 20 publications

(23 citation statements)

References 36 publications

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“…However, this differentiation may then be lost by mixing of individuals on an ocean-basin scale, followed by segregation by depth according to age and sex. Only by identifying breeding areas and conducting genetic analysis on juveniles would it be possible to test this hypothesis fully (Burford and Larson, 2007). Other marine species with similar life history may also show large-scale panmixia because of the periodic redistribution of the sexes for mating.…”

Section: Discussionmentioning

confidence: 99%

Genetic panmixia and demographic dependence across the North Atlantic in the deep-sea fish, blue hake (Antimora rostrata)

et al. 2010

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The efficient investment of resources and effort into conservation strategies depends on the accurate identification of management units. At the same time, understanding the processes by which population structure evolves requires an understanding of the conditions under which panmixia may exist. Here, we study a species with an unusual, apparently sex-biased pattern of distribution, and test the hypothesis that distribution processes associated with this pattern (for example, congregating at a single dominant spawning site or periodic mixing during reproduction) could lead to panmixia over a large geographic range. Using 13 microsatellite markers, we compared 393 blue hake (Antimora rostrata) from 11 sample sites across a geographic range of over 3000 km, and found no evidence of population structure. We estimated current effective population size and found it to be large (B15 000) across the sampled area. In addition, we used simulation models to test expectations about demographic correlation among populations and our ability to detect relevant levels of gene flow. All data were consistent with the interpretation of long-range panmixia.

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Section: Discussionmentioning

confidence: 99%

Genetic panmixia and demographic dependence across the North Atlantic in the deep-sea fish, blue hake (Antimora rostrata)

et al. 2010

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“…Lundy et al 2000, Chapman et al 2002, McPherson et al 2003, Dannewitz et al 2005, Burford & Larson 2007, Liu & Ely 2009, Christie et al 2010 to invertebrates (e.g. Colgan 1981, Hedgecock 1994b, David et al 1997, Li & Hedgecock 1998, Johnson & Wernham 1999, Moberg & Burton 2000, Hedgecock et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Coastal upwelling is linked to temporal genetic variability in the acorn barnacle Balanus glandula

Barshis¹,

Sotka²,

Kelly³

et al. 2011

Mar. Ecol. Prog. Ser.

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Dispersal and recruitment are central processes that shape the geographic and temporal distributions of populations of marine organisms. However, significant variability in factors such as reproductive output, larval transport, survival, and settlement success can alter the genetic identity of recruits from year to year. We designed a temporal and spatial sampling protocol to test for genetic heterogeneity among adults and recruits from multiple time points along ã 400 km stretch of the Oregon (USA) coastline. In total, 2824 adult and recruiting Balanus glandula were sampled between 2001 and 2008 from 9 sites spanning the Oregon coast. Consistent with previous studies, we observed high mitochondrial DNA diversity at the cytochrome oxidase I locus (884 unique haplotypes) and little to no spatial genetic population structure among the 9 sites (Φ ST = 0.00026, p = 0.170). However, subtle but significant temporal shifts in genetic composition were observed among year classes (Φ ST = 0.00071, p = 0.035), and spatial Φ ST varied from year to year. These temporal shifts in genetic structure were correlated with yearly differences in the strength of coastal upwelling (p = 0.002), with greater population structure observed in years with weaker upwelling. Higher levels of barnacle settlement were also observed in years with weaker upwelling (p < 0.001). These data suggest the hypothesis that low upwelling intensity maintains more local larvae close to shore, thereby shaping the genetic structure and settlement rate of recruitment year classes.

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“…1). This study region lies well within the geographic range of S. atrovirens, and genetic evidence suggests that the population of a congener, S. mystinus, is well-mixed in this region over evolutionary time scales (Burford & Larson 2007). However, this region does span Pt.…”

Section: Species Characteristics and Sample Collectionmentioning

confidence: 80%

Spatial pattern of natal signatures in the otoliths of juvenile kelp rockfish along the Californian coast

Standish¹,

White²,

Warner³

2011

Mar. Ecol. Prog. Ser.

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Genetic heterogeneity in a single year-class from a panmictic population of adult blue rockfish (Sebastes mystinus)

Cited by 20 publications

References 36 publications

Genetic panmixia and demographic dependence across the North Atlantic in the deep-sea fish, blue hake (Antimora rostrata)

Genetic panmixia and demographic dependence across the North Atlantic in the deep-sea fish, blue hake (Antimora rostrata)

Coastal upwelling is linked to temporal genetic variability in the acorn barnacle Balanus glandula

Spatial pattern of natal signatures in the otoliths of juvenile kelp rockfish along the Californian coast

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