scholarly journals Evidence of Ostrea lurida (Carpenter 1864) population structure in Puget Sound, WA

2017 ◽  
Author(s):  
J. Emerson Heare ◽  
Brady Blake ◽  
Jonathan P. Davis ◽  
Brent Vadopalas ◽  
Steven B. Roberts
Keyword(s):  
Population Structure ◽  
Puget Sound ◽  
Reproductive Activity ◽  
Transplant Experiment ◽  
Ostrea Lurida ◽  
Reciprocal Transplant Experiment ◽  
Growth And Survival ◽  
Olympia Oyster ◽  
Moderate Growth ◽  
Oyster Bay

For long-term persistence of species, population structure is important. Traits that hold adaptive advantage such as reproductive timing and stress resilience may differ among locales. Knowledge and consideration of these traits should be integrated into conservation efforts. To test for adaptive differences between Olympia oyster populations a reciprocal transplant experiment was carried out monitoring survival, growth, and reproduction using three established populations of Ostrea lurida within Puget Sound, Washington. Performance differed for each population. Ostrea lurida from Dabob Bay had higher survival at all sites but lower reproductive activity and growth. Oysters from Oyster Bay demonstrated greater proportion of brooding females at a majority of sites with moderate growth and survival. Together these data suggest the existence of O. lurida population structure within Puget Sound and provide information on how broodstock should be selected for restoration purposes.

scholarly journals Evidence of Ostrea lurida (Carpenter 1864) population structure in Puget Sound, WA

2017 ◽  
Author(s):  
J. Emerson Heare ◽  
Brady Blake ◽  
Jonathan P. Davis ◽  
Brent Vadopalas ◽  
Steven B. Roberts
Keyword(s):  
Population Structure ◽  
Puget Sound ◽  
Reproductive Activity ◽  
Transplant Experiment ◽  
Ostrea Lurida ◽  
Reciprocal Transplant Experiment ◽  
Growth And Survival ◽  
Olympia Oyster ◽  
Moderate Growth ◽  
Oyster Bay

For long-term persistence of species, population structure is important. Traits that hold adaptive advantage such as reproductive timing and stress resilience may differ among locales. Knowledge and consideration of these traits should be integrated into conservation efforts. To test for adaptive differences between Olympia oyster populations a reciprocal transplant experiment was carried out monitoring survival, growth, and reproduction using three established populations of Ostrea lurida within Puget Sound, Washington. Performance differed for each population. Ostrea lurida from Dabob Bay had higher survival at all sites but lower reproductive activity and growth. Oysters from Oyster Bay demonstrated greater proportion of brooding females at a majority of sites with moderate growth and survival. Together these data suggest the existence of O. lurida population structure within Puget Sound and provide information on how broodstock should be selected for restoration purposes.

scholarly journals Evidence of Ostrea lurida (Carpenter 1864) population structure in Puget Sound, WA

2015 ◽  
Author(s):  
J. Emerson Heare ◽  
Brady Blake ◽  
Jonathan P. Davis ◽  
Brent Vadopalas ◽  
Steven B. Roberts
Keyword(s):  
Population Structure ◽  
Puget Sound ◽  
Reproductive Activity ◽  
Transplant Experiment ◽  
Ostrea Lurida ◽  
Reciprocal Transplant Experiment ◽  
Growth And Survival ◽  
Olympia Oyster ◽  
Moderate Growth ◽  
Oyster Bay

For long-term persistence of species, population structure is important. Traits that hold adaptive advantage such as reproductive timing and stress resilience may differ among locales. Knowledge and consideration of these traits should be integrated into conservation efforts. To test for adaptive differences between Olympia oyster populations a reciprocal transplant experiment was carried out monitoring survival, growth, and reproduction using three established populations of Ostrea lurida within Puget Sound, Washington. Performance differed for each population. Ostrea lurida from Dabob Bay had higher survival at all sites but lower reproductive activity and growth. Oysters from Oyster Bay demonstrated greater proportion of brooding females at a majority of sites with moderate growth and survival. Together these data suggest the existence of O. lurida population structure within Puget Sound and provide information on how broodstock should be selected for restoration purposes.

scholarly journals Evidence of Ostrea lurida (Carpenter 1864) population structure in Puget Sound, WA

2015 ◽  
Author(s):  
J. Emerson Heare ◽  
Brady Blake ◽  
Jonathan P. Davis ◽  
Brent Vadopalas ◽  
Steven B. Roberts
Keyword(s):  
Population Structure ◽  
Puget Sound ◽  
Reproductive Activity ◽  
Transplant Experiment ◽  
Ostrea Lurida ◽  
Reciprocal Transplant Experiment ◽  
Growth And Survival ◽  
Moderate Growth ◽  
Growth And Reproduction

For long term persistence of species, it is important to consider population structure. 28 Traits that hold adaptive advantage such as reproductive timing and stress resilience may differ 29 among locales. Knowledge and consideration of these traits should be integrated into 30 conservation efforts. A reciprocal transplant experiment was carried out monitoring survival, 31 growth, and reproduction using three established populations of Ostrea lurida within Puget 32 Sound, Washington. Performance differed for each population. Ostrea lurida from Dabob Bay 33 had higher survival at all sites but lower reproductive activity and growth. Oysters from Oyster 34 Bay demonstrated greater reproductive activity at all sites with moderate growth and survival. 35 Together these data suggest the existence of O. lurida population structure within Puget Sound 36 and provide information on how broodstock should be selected for restoration purposes.

scholarly journals Evidence of Ostrea lurida (Carpenter 1894) population structure in Puget Sound, WA

2014 ◽  
Author(s):  
J. Emerson Heare ◽  
Brady Blake ◽  
Jonathon P. Davis ◽  
Brent Vadopalas ◽  
Steven B. Roberts
Keyword(s):  
Population Structure ◽  
Primary Production ◽  
Puget Sound ◽  
Reproductive Activity ◽  
Transplant Experiment ◽  
Ostrea Lurida ◽  
Reciprocal Transplant Experiment ◽  
Genetic Population ◽  
Growing Seasons ◽  
Home Site

Where restoration efforts occur, such as with Ostrea lurida in Puget Sound, Washington, it is important to consider genetic population structure. Traits that hold adaptive advantage such as reproductive timing and stress resilience may differ at local scales. Using three established populations of O.lurida within Puget Sound Washington, we performed a reciprocal transplant experiment and monitored survival, growth, reproduction. We found that performance differed for each population at each of these three metrics. O.lurida from a relatively harsh home site environment with low primary production and high dynamic habitats exhibited generally greater survival at all sites, whereas those from a relatively lush home site environment with high primary production and lower habitat dynamics exhibited generally greater reproductive activity at all sites. Populations from sites with shorter growing seasons exhibited greater growth in sites with longer growing periods, suggesting a countergradient adaptation may have occurred in these populations.

scholarly journals Evidence of Ostrea lurida (Carpenter 1864) population structure in Puget Sound, WA

2015 ◽  
Author(s):  
J. Emerson Heare ◽  
Brady Blake ◽  
Jonathan P. Davis ◽  
Brent Vadopalas ◽  
Steven B. Roberts
Keyword(s):  
Population Structure ◽  
Primary Production ◽  
Puget Sound ◽  
Reproductive Activity ◽  
Transplant Experiment ◽  
Ostrea Lurida ◽  
Reciprocal Transplant Experiment ◽  
Genetic Population ◽  
Growing Seasons ◽  
Home Site

Where restoration efforts occur, such as with Ostrea lurida in Puget Sound, Washington, it is important to consider genetic population structure. Traits that hold adaptive advantage such as reproductive timing and stress resilience may differ at local scales. Using three established populations of O.lurida within Puget Sound Washington, we performed a reciprocal transplant experiment and monitored survival, growth, reproduction. We found that performance differed for each population at each of these three metrics. O.lurida from a relatively harsh home site environment with low primary production and high dynamic habitats exhibited generally greater survival at all sites, whereas those from a relatively lush home site environment with high primary production and lower habitat dynamics exhibited generally greater reproductive activity at all sites. Populations from sites with shorter growing seasons exhibited greater growth in sites with longer growing periods, suggesting a countergradient adaptation may have occurred in these populations.

The growth and survival of three closely related Myosotis species in a 3-year transplant experiment

Botany ◽  
2013 ◽  
Vol 91 (4) ◽  
pp. 209-217 ◽  
Author(s):  
Eva Koutecká ◽  
Jan Lepš
Keyword(s):  
Habitat Preferences ◽  
Transplant Experiment ◽  
Short Term ◽  
Reciprocal Transplant Experiment ◽  
Closely Related Species ◽  
Growth And Survival ◽  
Sparse Vegetation ◽  
Wet Grasslands ◽  
Clonal Spread ◽  
Two Populations

We studied the growth and survival of three closely related species (Myosotis caespitosa C.F. Schultz, Myosotis palustris (L.) L. subsp. laxiflora (Reichenb.) Schubler et Martens, and Myosotis nemorosa Besser) in a 3-year reciprocal transplant experiment. Plants from two populations of each species were transplanted into five experimental localities where one of the three Myosotis species was resident. Young plants were planted into three types of competitive microsites as follows: gap, sparse vegetation, and dense vegetation. The experiment demonstrated differences among the species. It also showed large differences among populations within a species. The relative success of the species differed among individual localities and among different microsites, and the favorableness of microsites differed among localities. The Myosotis species typically had an advantage in localities where the species was resident. Myosotis caespitosa exhibited the highest mortality of its clones, particularly under competition, which corresponds well to its habitat preferences (disturbed and short-term sites), but it also exhibited the ability to spread in gaps by secondary rosettes. Myosotis palustris subsp. laxiflora spreads best clonally, but its clonal spread was most suppressed by competition. This was consistent with its ability to colonize quickly vegetation-free sites along water, but with weak competitiveness in later stages of succession. Myosotis nemorosa exhibited the highest survival rate, which fits with its preference for permanent wet grasslands.

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

2018 ◽  
Author(s):  
Katherine Silliman
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
North America ◽  
West Coast ◽  
Marine Species ◽  
Genetic Connectivity ◽  
Ostrea Lurida ◽  
The West ◽  
Olympia Oyster ◽  
Outlier Loci

ABSTRACTEffective 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, 13,444 single-nucleotide polymorphisms (SNPs) 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 288 SNPs 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.

Olympia oyster, Ostrea lurida, in Puget Sound: stable isotope shell profiles as potential indicators of a changing climate

2020 ◽  
Author(s):  
John P Bucci ◽  
Semra A Aytur ◽  
Philip Staudigel
Keyword(s):  
Environmental Changes ◽  
Shell Growth ◽  
Puget Sound ◽  
Seasonal Temperature ◽  
Ostrea Lurida ◽  
Time Pattern ◽  
Geographic Ranges ◽  
Olympia Oyster ◽  
Equilibrium Relationship ◽  
Over Time

There is a need to monitor environmental changes in situ across aquatic ecosystems. Sclerochronology, a systematic biogeochemical method that assesses variations in the accretionary hard tissues of invertebrates, can be useful in studying these changes. Further studies are needed to evaluate whether an equilibrium relationship exists between seasonal annual temperature variations in bivalve shells of species with multiple geographic ranges. We present one of the first sclerochronology reports to characterize the δ18O and δ13C shell profiles of the Olympia oyster, Ostrea lurida Carpenter, 1864. We evaluated its utility as a proxy for past water temperature relating to seasonal cycles. The objectives were to: (1) assess shell δ18O and δ13C values from specimens sampled over time; and (2) to evaluate whether δ18O shell profiles correlate with seasonal temperature patterns. Seven O. lurida specimens were collected, and measurements were taken across shell growth. Results from generalized linear mixed models (GLMM) showed that O. lurida produced δ18O profiles consistent with a sinusoidal time pattern. The δ18O values ranged from −2.74‰ to −1.05‰, and there was a significant third-order polynomial temporal relationship. Covariation between profiles of shell δ18O and δ13C values was observed over time. Two independently estimated measures of δ18O water, accounting for salinity, temperature, and shell carbonate, were also positively correlated over time. Implications support the theory that O. lurida shell δ18O profiles may be in isotopic equilibrium with ambient water conditions with applications for monitoring programs.

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