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Your search keyword '"Bickham, John W."' showing total 525 results
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525 results on '"Bickham, John W."'

2. Genomic Diversity as a Key Conservation Criterion: Proof‐of‐Concept From Mammalian Whole‐Genome Resequencing Data.

Author

Jeon, Jong Yoon, Black, Andrew N., Heenkenda, Erangi J., Mularo, Andrew J., Lamka, Gina F., Janjua, Safia, Brüniche‐Olsen, Anna, Bickham, John W., Willoughby, Janna R., and DeWoody, J. Andrew

Subjects
GENETIC variation, STATISTICAL association, COMMUNITY organization, HETEROZYGOSITY, SPECIES
Abstract

Many international, national, state, and local organizations prioritize the ranking of threatened and endangered species to help direct conservation efforts. For example, the International Union for Conservation of Nature (IUCN) assesses the Green Status of species and publishes the influential Red List of threatened species. Unfortunately, such conservation yardsticks do not explicitly consider genetic or genomic diversity (GD), even though GD is positively associated with contemporary evolutionary fitness, individual viability, and with future evolutionary potential. To test whether populations of genome sequences could help improve conservation assessments, we estimated GD metrics from 82 publicly available mammalian datasets and examined their statistical association with attributes related to conservation. We also considered intrinsic biological factors, including trophic level and body mass, that could impact GD and quantified their relative influences. Our results identify key population GD metrics that are both reflective and predictive of IUCN conservation categories. Specifically, our analyses revealed that Watterson's theta (the population mutation rate) and autozygosity (a product of inbreeding) are associated with the current Red List categorization, likely because demographic declines that lead to "listing" decisions also reduce levels of standing genetic variation. We argue that by virtue of this relationship, conservation organizations like IUCN could leverage emerging genome sequence data to help categorize Red List threat rankings (especially in otherwise data‐deficient species) and/or enhance Green Status assessments to establish a baseline for future population monitoring. Thus, our paper (1) outlines the theoretical and empirical justification for a new GD‐based assessment criterion, (2) provides a bioinformatic pipeline for estimating GD from population genomic data, and (3) suggests an analytical framework that can be used to measure baseline GD while providing quantitative GD context for consideration by conservation authorities. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Update on the status of gray whales since the 2020 Implementation Review

Author

Scordino, Jonathan, primary, Bickham, John W., additional, Brandon, John R., additional, Brownell, Robert L., additional, Burdin, Alexander, additional, Doniol-Valcroze, Thomas, additional, Eguchi, Tomoharu, additional, Givens, Geof H., additional, Lang, Aimée R., additional, Litovka, Dennis I., additional, Nakamura, Gen, additional, Punt, André E., additional, Stewart, Joshua D., additional, Urbán R., Jorge, additional, and Weller, Dave W., additional

Published
2024
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5. New species of Scotophilus (Chiroptera: Vespertilionidae) from sub-Saharan Africa /

Author

Brooks, Daniel M, Bickham, John W. (John Wayne), 1949, Texas Tech University. Museum, Texas Tech University. Natural Science Research Laboratory, Museum of Texas Tech University, Brooks, Daniel M, Bickham, John W. (John Wayne), 1949, Texas Tech University. Museum, and Texas Tech University. Natural Science Research Laboratory

Subjects
Africa, Sub-Saharan, Bats, Cladistic analysis, Phylogeny, Scotophilus, Vespertilionidae
Published
2014

7. Determinants of genetic variation across eco-evolutionary scales in pinnipeds

Author

Peart, Claire R., Tusso, Sergio, Pophaly, Saurabh D., Botero-Castro, Fidel, Wu, Chi-Chih, Aurioles-Gamboa, David, Baird, Amy B., Bickham, John W., Forcada, Jaume, Galimberti, Filippo, Gemmell, Neil J., Hoffman, Joseph I., Kovacs, Kit M., Kunnasranta, Mervi, Lydersen, Christian, Nyman, Tommi, de Oliveira, Larissa Rosa, Orr, Anthony J., Sanvito, Simona, Valtonen, Mia, Shafer, Aaron B. A., and Wolf, Jochen B. W.

Published
2020
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8. Karyological relationships and biodiversity of the pine voles of Azerbaijan : differentiation of species from the Greater and Lesser Caucasus Mountains /

Author

Kuliev, Gias N., Bickham, John W. (John Wayne), 1949, Texas Tech University. Museum, Texas Tech University. Natural Science Research Laboratory, Museum of Texas Tech University, Kuliev, Gias N., Bickham, John W. (John Wayne), 1949, Texas Tech University. Museum, and Texas Tech University. Natural Science Research Laboratory

Subjects
Azerbaijan, Microtus, Pitymys, Voles
Published
2010

11. Bats of Jamaica

Author

Genoways, Hugh H, Baker, Robert J, Bickham, John W, Phillips, Carleton J, and BioStor

Published
2005

19. Author Correction: Determinants of genetic variation across eco-evolutionary scales in pinnipeds

Author

Peart, Claire R., Tusso, Sergio, Pophaly, Saurabh D., Botero-Castro, Fidel, Wu, Chi-Chih, Aurioles-Gamboa, David, Baird, Amy B., Bickham, John W., Forcada, Jaume, Galimberti, Filippo, Gemmell, Neil J., Hoffman, Joseph I., Kovacs, Kit M., Kunnasranta, Mervi, Lydersen, Christian, Nyman, Tommi, de Oliveira, Larissa Rosa, Orr, Anthony J., Sanvito, Simona, Valtonen, Mia, Shafer, Aaron B. A., and Wolf, Jochen B. W.

Published
2021
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28. The Threatened Species Imperative:Conservation assessments would benefit from population genomic insights

Author

Andrew DeWoody, J., Jeon, Jong Yoon, Bickham, John W, Heenkenda, Erangi J., Janjua, Safia, Lamka, Gina F., Mularo, Andrew J., Black, Andrew, Brüniche-Olsen, Anna, Willoughby, Janna R., Andrew DeWoody, J., Jeon, Jong Yoon, Bickham, John W, Heenkenda, Erangi J., Janjua, Safia, Lamka, Gina F., Mularo, Andrew J., Black, Andrew, Brüniche-Olsen, Anna, and Willoughby, Janna R.

Published
2022

31. Development of a new SNP panel for bowhead whales (Balaena mysticetus).

Author

BAIRD, AMY B., SUYDAM, ROBERT S., POSTMA, LIANNE D., GEORGES, MARY, RIMMELIN, ALESHA R., GEORGE, J. C., and BICKHAM, JOHN W.

Subjects
SINGLE nucleotide polymorphisms, GENETIC variation, MARINE mammals, MICROSATELLITE repeats, GENETIC markers
Abstract

Population genetic research is a critical tool for the conservation and management of marine mammals and other species. The bowhead whale (Balaena mysticetus) is subject to aboriginal subsistence hunting in Alaska, Canada, Chukotka (Russian Federation) and Greenland, where, except for Canada, it is managed by the International Whaling Commission (IWC). Molecular genetic studies support conservation management plans and aid determination of sustainable hunting quotas by providing information on levels of genetic diversity, estimates of census size, effective population size and structure. Because bowhead populations are monitored, including genetic monitoring, in several countries, there is a need for genetic methods that can be consistently used in multiple labs and provide comparable data that can be publicly shared and built upon by successive studies. Here we present a new panel of single nucleotide polymorphisms (SNPs), derived from multiple bowhead populations, which meets these criteria. We describe the use of the Fluidigm SNPtype assay for analysing 69 autosomal, six X‐chromosome and one Y‐chromosome SNPs. Results indicate the methods herein have high efficacy and low error rates. Furthermore, because SNPs are discrete sequence‐based genetic markers, the panel of loci described here can be reliably replicated and is directly comparable across different labs, making this SNP panel more useful than existing microsatellite markers. [ABSTRACT FROM AUTHOR]

Published
2023
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