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Full-Text Articles in Life Sciences
Dna Barcoding Of Springsnails (Mollusca, Gastropoda, Caenogastropoda) Endemic To The Trans-Pecos Region Of Texas (Usa), Kathryn E. Perez, Vanessa Saenz, Natalia Salazar-Lozano, Benjamin F. Schwartz, Benjamin T. Hutchins
Dna Barcoding Of Springsnails (Mollusca, Gastropoda, Caenogastropoda) Endemic To The Trans-Pecos Region Of Texas (Usa), Kathryn E. Perez, Vanessa Saenz, Natalia Salazar-Lozano, Benjamin F. Schwartz, Benjamin T. Hutchins
Biology Faculty Publications and Presentations
In desert environments, unique communities depend on groundwater from springs, including a diverse radiation of small (<5 >mm) snails found in the desert across the southwestern United States. Nearly all springsnail species are considered critically imperiled with their existence depending on maintenance of spring-flows in regions of declining water availability. Extant, endemic springsnails in the Trans-Pecos region of Texas include one species of Pseudotryonia Hershler, 2001, five nominal Tryonia W. Stimpson, 1865 (Cochliopidae) and seven Pyrgulopsis Call & Pilsbry, 1886 (Hydrobiidae). Four of these are classified as endangered under the US Endangered Species Act. Surveys for springsnails were conducted at …
Variability In Billfish Vertical Distribution And Fishing Interactions Driven By Environmental Conditions In The Eastern Tropical Pacific Ocean, H. E. Blondin, D. E. Haulsee, Ryan Logan, Mahmood Shivji, E. R. Hoffmayer, J. H. Walker, J. M. Dean, E. L. Hazen, L. B. Crowder
Variability In Billfish Vertical Distribution And Fishing Interactions Driven By Environmental Conditions In The Eastern Tropical Pacific Ocean, H. E. Blondin, D. E. Haulsee, Ryan Logan, Mahmood Shivji, E. R. Hoffmayer, J. H. Walker, J. M. Dean, E. L. Hazen, L. B. Crowder
Biology Faculty Articles
Blue marlin (Makaira nigricans) and sailfish (Istiophorus platypterus) are ecologically important predators and valuable species throughout the world’s recreational, commercial, and subsistence fisheries. Comparing multi-species vertical habitat use can inform ecological uncertainties such as inter-species competition, as well as relative vulnerabilities to fishing activities. In this study, we identified key differences in both depth use and which environmental variables drive these selections, which highlights the variability in the catchability both as target species in recreational fisheries and bycatch in commercial fisheries. To understand these two species’ vertical habitat use, we examined depth profiles from 26 sailfish …
Population Genetics And Morphometrics Of Overwintering Swamp Sparrows (Melospiza Georgiana) At Panola Mountain State Park, Ashley Mcmahon
Population Genetics And Morphometrics Of Overwintering Swamp Sparrows (Melospiza Georgiana) At Panola Mountain State Park, Ashley Mcmahon
Graduate Research Showcase
Grassland birds are facing the greatest decline of any bird guild in North America due to widespread loss of grassland habitats. Conservation efforts tend to focus on birds that breed in grasslands, but grassland habitat loss will also negatively affect populations that overwinter in grasslands. Three Swamp Sparrow subspecies (Melospiza georgiana georgiana, M. g. ericrypta, M. g. nigrescens) segregate on at least some of their breeding grounds but may mix on wintering grounds, which often includes grasslands. Philopatric passerines often also segregate by sex on wintering grounds. Thus, loss of overwintering grasslands may disproportionately impact both subspecies and sex, leading …
Chromosome-Length Assembly Of The Baikal Seal (Pusa Sibirica) Genome Reveals A Historically Large Population Prior To Isolation In Lake Baikal, Aliya Yakupova, Andrey Tomarovsky, Azamat Totikov, Violetta R. Beklemisheva, Maria Logacheva, Polina Perelman, Aleksey Komissarov, Pavel Dobrynin, Ksenia Krasheninnikova, Gaik Tamazian, Natalya A. Serdyukova, Michael Rayko, Tatiana Bulyonkova, Nikolay Cherkasov, Vladimir Pylev, Vladimir Peterfeld, Aleksey Penin, Elena Balanovska, Alla L. Lapidus, Dna Zoo Consortium, Stephen James O'Brien, Alexander S. Graphodatsky, Klaus-Peter Koepfli, Sergey Kliver
Chromosome-Length Assembly Of The Baikal Seal (Pusa Sibirica) Genome Reveals A Historically Large Population Prior To Isolation In Lake Baikal, Aliya Yakupova, Andrey Tomarovsky, Azamat Totikov, Violetta R. Beklemisheva, Maria Logacheva, Polina Perelman, Aleksey Komissarov, Pavel Dobrynin, Ksenia Krasheninnikova, Gaik Tamazian, Natalya A. Serdyukova, Michael Rayko, Tatiana Bulyonkova, Nikolay Cherkasov, Vladimir Pylev, Vladimir Peterfeld, Aleksey Penin, Elena Balanovska, Alla L. Lapidus, Dna Zoo Consortium, Stephen James O'Brien, Alexander S. Graphodatsky, Klaus-Peter Koepfli, Sergey Kliver
Biology Faculty Articles
Pusa sibirica, the Baikal seal, is the only extant, exclusively freshwater, pinniped species. The pending issue is, how and when they reached their current habitat—the rift lake Baikal, more than three thousand kilometers away from the Arctic Ocean. To explore the demographic history and genetic diversity of this species, we generated a de novo chromosome-length assembly, and compared it with three closely related marine pinniped species. Multiple whole genome alignment of the four species compared with their karyotypes showed high conservation of chromosomal features, except for three large inversions on chromosome VI. We found the mean heterozygosity of the studied …