Testing the potential for larval dispersal to explain connectivity and population structure of threatened rockfish species in Puget Sound

2021 ◽  
Author(s):  
K Andrews ◽  
B Bartos ◽  
CJ Harvey ◽  
D Tonnes ◽  
M Bhuthimethee ◽  
...  
Keyword(s):  
Population Structure ◽  
Larval Dispersal ◽  
Puget Sound

Genetic isolation by distance and localized fjord population structure in Pacific cod (Gadus macrocephalus): limited effective dispersal in the northeastern Pacific Ocean

2009 ◽  
Vol 66 (1) ◽  
pp. 153-166 ◽  
Author(s):  
Kathryn Maja Cunningham ◽  
Michael Francis Canino ◽  
Ingrid Brigette Spies ◽  
Lorenz Hauser
Keyword(s):  
Population Structure ◽  
Pacific Ocean ◽  
Isolation By Distance ◽  
Spatial Scales ◽  
Puget Sound ◽  
Pacific Cod ◽  
Genetic Population ◽  
Pacific Cod Gadus Macrocephalus ◽  
Gadus Macrocephalus ◽  
Northeastern Pacific

Genetic population structure of Pacific cod, Gadus macrocephalus , was examined across much of its northeastern Pacific range by screening variation at 11 microsatellite DNA loci. Estimates of FST (0.005 ± 0.002) and RST (0.010 ± 0.003) over all samples suggested that effective dispersal is limited among populations. Genetic divergence was highly correlated with geographic distance in an isolation-by-distance (IBD) pattern along the entire coastal continuum in the northeastern Pacific Ocean (~4000 km; r2 = 0.83), extending from Washington State to the Aleutian Islands, and over smaller geographic distances for three locations in Alaska (~1700 km; r2 = 0.56). Slopes of IBD regressions suggested average dispersal distance between birth and reproduction of less than 30 km. Exceptions to this pattern were found in samples taken from fjord environments in the Georgia Basin (the Strait of Georgia (Canada) and Puget Sound (USA)), where populations were differentiated from coastal cod. Our results showed population structure at spatial scales relevant to fisheries management, both caused by limited dispersal along the coast and by sharp barriers to migration isolating smaller stocks in coastal fjord environments.

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 Strong horizontal and vertical connectivity in the coral Pocillopora verrucosa from Ludao, Taiwan, a small oceanic island

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258181
Author(s):  
Stéphane de Palmas ◽  
Derek Soto ◽  
Ming-Jay Ho ◽  
Vianney Denis ◽  
Chaolun Allen Chen
Keyword(s):  
Population Structure ◽  
Larval Dispersal ◽  
Oceanic Island ◽  
Genetic Connectivity ◽  
Eastern Coast ◽  
Genetic Clustering ◽  
The Right ◽  
Depth Ranges ◽  
Pocillopora Verrucosa ◽  
F Statistics

Mesophotic habitats could be sheltered from natural and anthropogenic disturbances and act as reproductive refuges, providing propagules to replenish shallower populations. Molecular markers can be used as proxies evaluating the connectivity and inferring population structure and larval dispersal. This study characterizes population structure as well as horizontal and vertical genetic connectivity of the broadcasting coral Pocillopora verrucosa from Ludao, a small oceanic island off the eastern coast of Taiwan. We genotyped 75 P. verrucosa specimens from three sites (Gongguan, Dabaisha, and Guiwan) at three depth ranges (Shallow: 7–15 m, Mid-depth: 23–30 m, and Deep: 38–45 m), spanning shallow to upper mesophotic coral reefs, with eight microsatellite markers. F-statistics showed a moderate differentiation (FST = 0.106, p<0.05) between two adjacent locations (Dabaisha 23–30 and Dabaisha 38–45 m), but no differentiation elsewhere, suggesting high levels of connectivity among sites and depths. STRUCTURE analysis showed no genetic clustering among sites or depths, indicating that all Pocillopora individuals could be drawn from a single panmictic population. Simulations of recent migration assigned 30 individuals (40%) to a different location from where they were collected. Among them, 1/3 were assigned to deeper locations, 1/3 to shallower populations and 1/3 were assigned to the right depth but a different site. These results suggest high levels of vertical and horizontal connectivity, which could enhance the recovery of P. verrucosa following disturbances around Ludao, a feature that agrees with demographic studies portraying this species as an opportunistic scleractinian.

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 Population Structure, Larval Dispersal, and Gene Flow in the Queen Conch,Strombus gigas, of the Caribbean

1989 ◽  
Vol 177 (3) ◽  
pp. 356-362 ◽  
Author(s):  
JEFFRY B. MITTON ◽  
CARL J. BERG ◽  
KATHERINE S. ORR
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
Larval Dispersal ◽  
Strombus Gigas ◽  
Queen Conch ◽  
The Caribbean

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.

Mitochondrial and microsatellite DNA analyses of harbour seal population structure in the northeast Pacific Ocean

1999 ◽  
Vol 77 (6) ◽  
pp. 930-943 ◽  
Author(s):  
Theresa M Burg ◽  
Andrew W Trites ◽  
Michael J Smith
Keyword(s):  
British Columbia ◽  
Population Structure ◽  
Pacific Ocean ◽  
Nuclear Dna ◽  
Puget Sound ◽  
Mitochondrial Control Region ◽  
Single Individual ◽  
The Pacific ◽  
Harbour Seals ◽  
The Pacific Ocean

The genetic diversity and population structure of harbour seals (Phoca vitulina richardsi) along the coasts of British Columbia and parts of Alaska were investigated using both mitochondrial DNA (mtDNA) and nuclear DNA. A 475-bp fragment of the mitochondrial control region was amplified and sequenced from 128 animals. Sixty variable sites defined 72 mtDNA haplotypes with pairwise nucleotide differences as high as 5%. Fifty-eight haplotypes were represented by a single individual, and shared haplotypes were generally restricted to a small geographic range. Phylogenetic reconstruction revealed two distinct populations comprising (i) southern British Columbia and (ii) northern British Columbia - southeast Alaska. Furthermore, the order of the clades suggests that the Pacific Ocean was colonized at least twice, 670 000 and 380 000 years ago. Haplotypes from the first invasion are restricted to a small number of seals around southern Vancouver Island. Analyses of five polymorphic microsatellite loci showed significant differences between the populations of southern British Columbia and northern British Columbia - Alaska. Migration rates for males based on microsatellite data (3-22 seals/generation) were higher than those obtained for females from mtDNA data (0.3 females/generation). Combining all the DNA data collected to date suggests that there are at least three populations of harbour seals in the Pacific composed of seals from (i) Japan, Russia, Alaska, and northern British Columbia, (ii) southern British Columbia and Puget Sound, Washington, and (iii) the outer coasts of Washington, Oregon, and California. The data do not support the existence of two subspecies of harbour seals in the Pacific Ocean.

Using Otolith Chemistry to Investigate Population Structure of Quillback Rockfish in Puget Sound

2010 ◽  
Vol 84 (3) ◽  
pp. 243-254 ◽  
Author(s):  
Paul M. Chittaro ◽  
Terrie Klinger ◽  
Kevin Telmer ◽  
Michael Sanborn ◽  
Lance Morgan
Keyword(s):  
Population Structure ◽  
Puget Sound ◽  
Otolith Chemistry

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.

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