scholarly journals Population assignment and local adaptation along an isolation-by-distance gradient in Pacific cod (Gadus macrocephalus )

2018 ◽  
Vol 11 (8) ◽  
pp. 1448-1464 ◽  
Author(s):  
Daniel P. Drinan ◽  
Kristen M. Gruenthal ◽  
Michael F. Canino ◽  
Dayv Lowry ◽  
Mary C. Fisher ◽  
...  
Keyword(s):  
Local Adaptation ◽  
Isolation By Distance ◽  
Population Assignment ◽  
Pacific Cod ◽  
Pacific Cod Gadus Macrocephalus ◽  
Gadus Macrocephalus

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 IgE reactivity to Pacific cod (Gadus macrocephalus) fish allergens in dogs with canine atopic dermatitis

2019 ◽  
Vol 143 (2) ◽  
pp. AB67
Author(s):  
Ichiro Imanishi ◽  
Jumpei Uchiyama ◽  
Takako Matsuda ◽  
Keijiro Mizukami ◽  
Hidekatsu Shimakura ◽  
...  
Keyword(s):  
Atopic Dermatitis ◽  
Pacific Cod ◽  
Canine Atopic Dermatitis ◽  
Ige Reactivity ◽  
Pacific Cod Gadus Macrocephalus ◽  
Gadus Macrocephalus

scholarly journals Functional Calcium Binding Peptides from Pacific Cod (Gadus macrocephalus) Bone: Calcium Bioavailability Enhancing Activity and Anti-Osteoporosis Effects in the Ovariectomy-Induced Osteoporosis Rat Model

Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1325 ◽  
Author(s):  
Kai Zhang ◽  
Bafang Li ◽  
Qianru Chen ◽  
Zhaohui Zhang ◽  
Xue Zhao ◽  
...  
Keyword(s):  
Serum Calcium ◽  
Rat Model ◽  
Calcium Binding ◽  
Calcium Absorption ◽  
Intestinal Calcium Absorption ◽  
Pacific Cod ◽  
Pacific Cod Gadus Macrocephalus ◽  
Calcium Bioavailability ◽  
Gadus Macrocephalus ◽  
Binding Peptides

Calcium binding peptides from Pacific cod (Gadus macrocephalus) bone have attracted attention due to their potential effects on bone health. In this study, calcium binding peptides (CBP) were prepared from Pacific cod bone by trypsin and neutral protease. Ultraviolet spectra, circular dichroism (CD), and Fourier transform infrared spectroscopy (FTIR) revealed that carboxyl and amino groups in CBP could bind to Ca2+, and form the peptide-calcium complex (CBP-Ca). Single-pass intestinal perfusion (SPIP) experiments indicated that the intestinal calcium absorption was significantly enhanced (p < 0.01) in CBP-Ca treated Wistar rats. The anti-osteoporosis activity of CBP-Ca was investigated in the ovariectomized (OVX) Wistar rat model. The administration of CBP-Ca significantly (p < 0.01) improved the calcium bioavailability, trabecular bone structure, bone biomechanical properties, bone mineral density, and bone mineralization degree. CBP-Ca notably (p < 0.01) increased serum calcium, however, it remarkably (p < 0.01) reduced the levels of osteocalcin (OCN), bone alkaline phosphatase (BALP), tartrate-resistant acid phosphatase isoform 5b (TRAP5b), and C-telopeptide of type I collagen (CTX-1) in serum. Results suggested that the cod bone derived CBP could bind with calcium, improve the intestinal calcium absorption, calcium bioavailability, and serum calcium, then reduce the bone turnover rate, and thus ameliorate osteoporosis.

Loss of spawning habitat and prerecruits of Pacific cod during a Gulf of Alaska heatwave

2020 ◽  
Vol 77 (4) ◽  
pp. 644-650 ◽  
Author(s):  
Benjamin J. Laurel ◽  
Lauren A. Rogers
Keyword(s):  
Time Series ◽  
Laboratory Data ◽  
Reproductive Potential ◽  
Gulf Of Alaska ◽  
Spawning Habitat ◽  
Pacific Cod ◽  
Pacific Cod Gadus Macrocephalus ◽  
Gadus Macrocephalus ◽  
Hatch Success ◽  
Negative Impacts

Pacific cod (Gadus macrocephalus) stocks in the Gulf of Alaska experienced steep, unexpected declines following an unprecedented 3-year marine heatwave (i.e., “warm blob”) from 2014 to 2016. We contend that stock reproductive potential was reduced during this period, evidenced by a combination of new laboratory data demonstrating narrow thermal hatch success (3–6 °C), mechanistic-based models of spawning habitat, and correlations with prerecruit time series. With the exception of single-year El Niño events (1998, 2003), the recent 3-year heatwave (2014–2016) and return to similar conditions in 2019 were potentially the most negative impacts on spawning habitat for Pacific cod in the available time series (1994–2019). Continued warming will likely reduce the duration and spatial extent of Pacific cod spawning in the Gulf of Alaska.

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