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Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
Historical Species Distribution Models Predict Species Limits In Western Plethodon Salamanders, Tara A. Pelletier, Charlie Crisafulli, Steve Wagner, Amanda J. Zellmer, Brian C. Carstens
Historical Species Distribution Models Predict Species Limits In Western Plethodon Salamanders, Tara A. Pelletier, Charlie Crisafulli, Steve Wagner, Amanda J. Zellmer, Brian C. Carstens
All Faculty Scholarship for the College of the Sciences
Allopatry is commonly used to predict boundaries in species delimitation investigations under the assumption that currently allopatric distributions are indicative of reproductive isolation; however, species ranges are known to change over time. Incorporating a temporal perspective of geographic distributions should improve species delimitation; to explore this, we investigate three species of western Plethodon salamanders that have shifted their ranges since the end of the Pleistocene. We generate species distribution models (SDM) of the current range, hindcast these models onto a climatic model 21 Ka, and use three molecular approaches to delimit species in an integrated fashion. In contrast to expectations …
Grizzly Bear Monitoring By The Heiltsuk People As A Crucible For First Nation Conservation Practice, William G. Housty, Anna Noson, Gerald W. Scoville, John Boulanger, Richard M. Jeo, Chris T. Darimont, Christopher E. Filardi
Grizzly Bear Monitoring By The Heiltsuk People As A Crucible For First Nation Conservation Practice, William G. Housty, Anna Noson, Gerald W. Scoville, John Boulanger, Richard M. Jeo, Chris T. Darimont, Christopher E. Filardi
All Faculty Scholarship for the College of the Sciences
Guided by deeply held cultural values, First Nations in Canada are rapidly regaining legal authority to manage natural resources. We present a research collaboration among academics, tribal government, provincial and federal government, resource managers, conservation practitioners, and community leaders supporting First Nation resource authority and stewardship. First, we present results from a molecular genetics study of grizzly bears inhabiting an important conservation area within the territory of the Heiltsuk First Nation in coastal British Columbia. Noninvasive hair sampling occurred between 2006 and 2009 in the Koeye watershed, a stronghold for grizzly bears, salmon, and Heiltsuk people. Molecular demographic analyses revealed …
Genetic Diversity Of North American Captive-Born Gorillas (Gorilla Gorilla Gorilla), Noah D. Simmons, Ronald S. Wagner, Joseph G. Lorenz
Genetic Diversity Of North American Captive-Born Gorillas (Gorilla Gorilla Gorilla), Noah D. Simmons, Ronald S. Wagner, Joseph G. Lorenz
All Faculty Scholarship for the College of the Sciences
Western lowland gorillas (Gorilla gorilla gorilla) are designated as critically endangered and wild populations are dramatically declining as a result of habitat destruction, fragmentation, diseases (e.g., Ebola) and the illegal bushmeat trade. As wild populations continue to decline, the genetic management of the North American captive western lowland gorilla population will be an important component of the long‐term conservation of the species. We genotyped 26 individuals from the North American captive gorilla collection at 11 autosomal microsatellite loci in order to compare levels of genetic diversity to wild populations, investigate genetic signatures of a population bottleneck and identify …
Terrestrial Habitat Requirements Of Nesting Freshwater Turtles, D. A. Steen, J. P. Gibbs, K. A. Buhlman, J. L. Carr, B. W. Compton, J. D. Congdon, J. S. Doody, J. C. Godwin, Kerry L. Holcomb, D. R. Jackson, F. J. Janzen, G. Johnson, M. T. Jones, J. T. Lamer, T. A. Langen, M. V. Plummer, J. W. Rowe, R. A. Saumure, J. K. Tucker, D. S. Wilson
Terrestrial Habitat Requirements Of Nesting Freshwater Turtles, D. A. Steen, J. P. Gibbs, K. A. Buhlman, J. L. Carr, B. W. Compton, J. D. Congdon, J. S. Doody, J. C. Godwin, Kerry L. Holcomb, D. R. Jackson, F. J. Janzen, G. Johnson, M. T. Jones, J. T. Lamer, T. A. Langen, M. V. Plummer, J. W. Rowe, R. A. Saumure, J. K. Tucker, D. S. Wilson
All Faculty Scholarship for the College of the Sciences
Because particular life history traits affect species vulnerability to development pressures, cross-species summaries of life history traits are useful for generating management guidelines. Conservation of aquatic turtles, many members of which are regionally or globally imperiled, requires knowing the extent of upland habitat used for nesting. Therefore, we compiled distances that nests and gravid females had been observed from wetlands. Based on records of > 8000 nests and gravid female records compiled for 31 species in the United States and Canada, the distances that encompass 95% of nests vary dramatically among genera and populations, from just 8 m for Malaclemys to …
Effects Of The Pathogenic Water Mold Saprolegnia Ferax On Survival Of Amphibian Larvae, John M. Romansic, Kristin A. Diez, Elise M. Higashi, James E. Johnson, Andrew R. Blaustein
Effects Of The Pathogenic Water Mold Saprolegnia Ferax On Survival Of Amphibian Larvae, John M. Romansic, Kristin A. Diez, Elise M. Higashi, James E. Johnson, Andrew R. Blaustein
All Faculty Scholarship for the College of the Sciences
Infectious diseases are a significant threat to worldwide biodiversity. Amphibian declines, a significant part of current biodiversity losses, are in many cases associated with infectious disease. Water molds are one group of pathogens affecting amphibians on a worldwide basis. Although water molds have been studied extensively for their effects on host embryos, little information is available about how they affect post-embryonic amphibians. We tested the effects of one species of water mold, Saprolegnia ferax, in a comparative study of larvae of 4 amphibian species: Pseudacris regilla (Pacific treefrog), Rana cascadae (Cascades frog), Ambystoma macrodactylum (long-toed salamander), and R. aurora (red-legged …