Evidence of <i>Ostrea lurida</i> Carpenter, 1864, population structure in Puget Sound, WA, USA

Heare, J. Emerson; Blake, Brady; Davis, Jonathan P.; Vadopalas, Brent; Roberts, Steven B.

doi:10.1111/maec.12458

Cited by 12 publications

(24 citation statements)

References 35 publications

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“…The weak population structure within Puget Sound and the overall low genetic diversity in northern sites are likely due to recent genetic bottlenecks and range expansion after the last glacial maximum, which reached just north of Willapa Bay, WA (49°N latitude), until 12–13 kya (Dyke & Prest, ). Despite such low genetic differentiation, experimental assessments of local adaptation for populations within Puget Sound have detected heritable differences in fitness traits such as reproductive timing, growth rate, and gene expression in response to stress (Heare, Blake, Davis, Vadopalas, & Roberts, ; Heare, White, Vadopalas, & Roberts, ; Silliman, Bowyer, & Roberts, ). These results, coupled with experimental evidence for local adaptation to salinity among Northern California populations (Bible & Sanford, ), suggest that adaptive divergence in this species can occur in the face of high gene flow.…”

Section: Discussionmentioning

confidence: 99%

Population structure, genetic connectivity, and adaptation in the Olympia oyster (Ostrea lurida) along the west coast of North America

Silliman

2019

Evolutionary Applications

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Effective management of threatened and exploited species requires an understanding of both the genetic connectivity among populations and local adaptation. The Olympia oyster ( Ostrea lurida ), patchily distributed from Baja California to the central coast of Canada, has a long history of population declines due to anthropogenic stressors. For such coastal marine species, population structure could follow a continuous isolation‐by‐distance model, contain regional blocks of genetic similarity separated by barriers to gene flow, or be consistent with a null model of no population structure. To distinguish between these hypotheses in O. lurida , 13,424 single nucleotide polymorphisms ( SNP s) were used to characterize rangewide population structure, genetic connectivity, and adaptive divergence. Samples were collected across the species range on the west coast of North America, from southern California to Vancouver Island. A conservative approach for detecting putative loci under selection identified 235 SNP s across 129 GBS loci, which were functionally annotated and analyzed separately from the remaining neutral loci. While strong population structure was observed on a regional scale in both neutral and outlier markers, neutral markers had greater power to detect fine‐scale structure. Geographic regions of reduced gene flow aligned with known marine biogeographic barriers, such as Cape Mendocino, Monterey Bay, and the currents around Cape Flattery. The outlier loci identified as under putative selection included genes involved in developmental regulation, sensory information processing, energy metabolism, immune response, and muscle contraction. These loci are excellent candidates for future research and may provide targets for genetic monitoring programs. Beyond specific applications for restoration and management of the Olympia oyster, this study lends to the growing body of evidence for both population structure and adaptive differentiation across a range of marine species exhibiting the potential for panmixia. Computational notebooks are available to facilitate reproducibility and future open‐sourced research on the population structure of O. lurida .

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Section: Discussionmentioning

confidence: 99%

Population structure, genetic connectivity, and adaptation in the Olympia oyster (Ostrea lurida) along the west coast of North America

Silliman

2019

Evolutionary Applications

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“…Three of the cohorts were first‐generation hatchery‐produced (F1) oysters (32.1 ± 5.0 mm), all hatched in Puget Sound (Port Gamble Bay) in 2013 (Heare et al. ). The broodstock used to produce these F1 oysters were wild, harvested from Fidalgo Bay in North Puget Sound (F), Dabob Bay in Hood Canal (D), and Oyster Bay in South Puget Sound (O‐1; O in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…These populations are considered phenotypically distinct subpopulations (Heare et al. , White et al. ).…”

Section: Methodsmentioning

confidence: 99%

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Carryover effects of temperature and pCO₂ across multiple Olympia oyster populations

Spencer

Venkataraman

Crim

et al. 2020

Ecological Applications

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Predicting how populations will respond to ocean change across generations is critical to effective conservation of marine species. One emerging factor is the influence of parental exposures on offspring phenotype, known as intergenerational carryover effects. Parental exposure may deliver beneficial or detrimental characteristics to offspring that can influence larval recruitment patterns, thus shaping how populations and community structure respond to ocean change. Impacts of adult exposure to elevated winter temperature and pCO2 on reproduction and offspring viability were examined in the Olympia oyster (Ostrea lurida) using three populations of adult, hatchery‐reared O. lurida, plus an additional cohort spawned from one of the populations. Oysters were sequentially exposed to elevated temperature (+4°C, at 10°C), followed by elevated pCO2 (+2,204 μatm, at 3,045 μatm) during winter months. Male gametes were more developed after elevated temperature exposure and less developed after high pCO2 exposure, but there was no impact on female gametes or sex ratios. Oysters previously exposed to elevated winter temperature released larvae earlier, regardless of pCO2 exposure. Those exposed to elevated winter temperature as a sole treatment released more larvae on a daily basis but, when also exposed to high pCO2, there was no effect. These combined results indicate that elevated winter temperature accelerates O. lurida spermatogenesis, resulting in earlier larval release and increased production, with elevated pCO2 exposure negating effects of elevated temperature. Altered recruitment patterns may therefore follow warmer winters due to precocious spawning, but these effects may be masked by coincidental high pCO2. Offspring were reared in common conditions for 1 yr, then deployed for 3 months in four estuarine bays with distinct environmental conditions. Offspring of parents exposed to elevated pCO2 had higher survival rates in two of the four bays. This carryover effect demonstrates that parental conditions can have substantial ecologically relevant impacts that should be considered when predicting impacts of environmental change. Furthermore, Olympia oysters may be more resilient in certain environments when progenitors are pre‐conditioned in stressful conditions. Combined with other recent studies, our work suggests that the Olympia may be more equipped than other oysters for the challenge of a changing ocean.

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“…Adult oyster temperature and pCO2 exposures 153Four cohorts of adult Ostrea lurida were used in this study. Three of the cohorts were first-154 generation hatchery-produced (F1) oysters (32.1 ± 5.0 mm), all hatched in PugetSound (Port 155 Gamble Bay) in 2013(Heare et al, 2017). The broodstock used to produce these F1 oysters were 156 wild, harvested from Fidalgo Bay in North Puget Sound (F), Dabob Bay in Hood Canal (D), and 157Oyster Bay in South Puget Sound (O-1) (O inFigure 1).…”

mentioning

confidence: 99%

Carryover effects of temperature and pCO₂across multiple Olympia oyster populations

Spencer

Venkataraman

Crim

et al. 2019

Preprint

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6Predicting how populations will respond to ocean change across generations is critical to 7 effective conservation of marine species. One emerging factor is the influence of parental 8 exposures on offspring phenotype, known as intergenerational carryover effects. Parental 9 exposure may deliver beneficial or detrimental characteristics to offspring that can influence 10 larval recruitment patterns, thus shaping how populations and community structure respond to 11 ocean change. Impacts of adult exposure to elevated winter temperature and pCO2 on 12 reproduction and offspring viability were examined in the Olympia oyster (Ostrea lurida) using 13 three populations of adult, hatchery-reared O. lurida, plus an additional cohort spawned from one 14 of the populations. Oysters were sequentially exposed to elevated temperature (+4°C, at 10°C), 15 followed by elevated pCO2 (+2204 µatm, at 3045 µatm) during winter months. Male gametes 16 were more developed after elevated temperature exposure and less developed after high pCO2 17 exposure, but there was no impact on female gametes or sex ratios. Oysters previously exposed 18 to elevated winter temperature released larvae earlier, regardless of pCO2 exposure. Those 19 exposed to elevated winter temperature as a sole treatment released more larvae on a daily basis, 20 but when also exposed to high pCO2 there was no effect. These combined results indicate that 21 elevated winter temperature accelerates O. lurida spermatogenesis, resulting in earlier larval 22 release and increased production, with elevated pCO2 exposure negating effects of elevated 23 temperature. Altered recruitment patterns may therefore follow warmer winters due to 24 precocious spawning, but these effects may be masked by coincidental high pCO2. Offspring 25 were reared in common conditions for one year, then deployed for three months in four estuarine 26 bays with distinct environmental conditions. Offspring of parents exposed to elevated pCO2 had 27 Spencer et al. preprint September 2019 3 higher survival rates in two of the four bays. This carryover effect demonstrates that parental 28 conditions can have substantial ecologically relevant impacts that should be considered when 29 predicting impacts of environmental change. Furthermore, Olympia oysters may be more 30 resilient in certain environments when progenitors are pre-conditioned in stressful conditions. 31Combined with other recent studies, our work suggests that the Olympia may be more equipped 32 than other oysters for the challenge of a changing ocean. 33

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Evidence of Ostrea lurida Carpenter, 1864, population structure in Puget Sound, WA, USA

Cited by 12 publications

References 35 publications

Population structure, genetic connectivity, and adaptation in the Olympia oyster (Ostrea lurida) along the west coast of North America

Population structure, genetic connectivity, and adaptation in the Olympia oyster (Ostrea lurida) along the west coast of North America

Carryover effects of temperature and pCO₂ across multiple Olympia oyster populations

Carryover effects of temperature and pCO₂across multiple Olympia oyster populations

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Evidence of Ostrea lurida Carpenter, 1864, population structure in Puget Sound, WA, USA

Cited by 12 publications

References 35 publications

Population structure, genetic connectivity, and adaptation in the Olympia oyster (Ostrea lurida) along the west coast of North America

Population structure, genetic connectivity, and adaptation in the Olympia oyster (Ostrea lurida) along the west coast of North America

Carryover effects of temperature and pCO2 across multiple Olympia oyster populations

Carryover effects of temperature and pCO2across multiple Olympia oyster populations

Contact Info

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Resources

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Carryover effects of temperature and pCO₂ across multiple Olympia oyster populations

Carryover effects of temperature and pCO₂across multiple Olympia oyster populations