Browsing by Author "Davis, Randall"
Now showing items 1-20 of 21
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Wolt, Ryan C. (2014-04-30)Sea otter (Enhydra lutris kenyoni) foraging behavior and prey preference (2001- 2004) and the behavior and activity budgets of females with dependent pups (2005- 2010) were studied during the summer (June-August) in Simpson ...
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Gailey, Glenn Andrew (2013-05-14)The western North Pacific population of gray whales (Eschrichtius robustus) is critically endangered of extinction. The population size is estimated to be 131 individuals with 31 reproductive females. Throughout their ...
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Lundquist, David Jeffrey (Texas A&M University, 2007-09-17)Guidelines for sustainable swim-with tourism for large whales are not welldeveloped, as researchers have focused on delphinids. Nations that signed the Convention on Biological Diversity at the Earth Summit in Rio de Janeiro ...
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Briggs, Holly Beth (Texas A&M University, 2007-04-25)Recent studies indicate a 70% decrease in the Alaskan Steller sea lion (SSL) population (ca. 5% per year) since the early 1980's. In accordance with a 1997 status classification of the Western Steller sea lion (WSSL) stock ...
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Diving Behavior, Habitat Associations, and Sensory Modalities for Prey Detection in Elephant Seals McGovern, Kristen Ann (2018-03-12)I used video and movement data obtained from animal-borne video and data recorders (VDRs) and histological data obtained from vibrissal pads of elephant seals to address the questions: When, where, how, and on what prey ...
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Early Migratory Behavior of Northern Fur Seal (Callorhinus ursinus) Pups from Bering Island, Russia Lee, Olivia Astillero (2012-07-16)I examined the population trends of northern fur seals (Callorhinus ursinus) using an age-specific metapopulation model that allowed migration between rookeries. Mortality and birth rates were modified to simulate future ...
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Piwetz, Sarah Katherine (2018-05-29)This dissertation contributes to our understanding of anthropogenic effects on wildlife, a central question in the growing field of conservation behavior. I present three case studies of coastal delphinid species in diverse ...
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Piwetz, Sarah Katherine (2018-05-29)This dissertation contributes to our understanding of anthropogenic effects on wildlife, a central question in the growing field of conservation behavior. I present three case studies of coastal delphinid species in diverse ...
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Piwetz, Sarah Katherine (2018-05-29)This dissertation contributes to our understanding of anthropogenic effects on wildlife, a central question in the growing field of conservation behavior. I present three case studies of coastal delphinid species in diverse ...
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Timm, Lori L (2013-07-23)Variation in terrestrial mammalian craniodental morphology and skull shape is known to constrain feeding performance, which in turn influences dietary habits and ultimately fitness. Otters have evolved two feeding ...
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Pearson, Heidi Christine (Texas A&M University, 2008-10-10)I examined fission-fusion sociality in dusky dolphins (Lagenorhynchus obscurus), and investigated aspects of social convergence between dolphins and great apes. I used boat-based group focal follows and photo-identification ...
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Olivier, Paul (2015-04-29)A key objective of the National Marine Fisheries Service recovery plan for Steller sea lions (SSL – Eumetopias jubatus) is to protect critical habitats. Doing so relies in part on knowledge of SSL ecology based on time-depth ...
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Gilkinson, Andrea Karin (Texas A&M University, 2006-04-12)Habitat associations of sea otters during resting and feeding were investigated in Simpson Bay, Prince William Sound, Alaska during the summer months of 2001-2003. Sea otter locations collected during boat surveys were ...
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Noll, Christian John, IV (Texas A&M University, 2006-04-12)Simpson Bay is a turbid, outwash fjord located in northeastern Prince William Sound, Alaska. A high ratio of watershead:basin surface area combined with high precipitation and an easily erodable catchment create high ...
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Reed, Nathan Mark (2021-04-08)New Zealand sea lions (Phocarctos hookeri) were extirpated from the North and South Islands of New Zealand during pre-European native hunting, and their numbers were greatly reduced on the Auckland and Campbell Islands ...
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Brewer, Melissa A. (2015-09-18)Marine mammals live a life of dual constraints and must balance energetic demands (oxygen consumption) and limited O2 availability while breath-holding. In order to overcome these dual constraints, marine mammals have ...
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Wright, Traver J. (2014-04-25)Myoglobin (Mb) is an oxygen binding hemoprotein in vertebrate skeletal muscle that functions in intracellular oxygen storage and transport. Due to the unique oxygen storage demands of diving birds and mammals, these ...
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Belonovich, Olga Andreevna (2011-10-21)The northern fur seal (NFS) population on the Pribilof Islands (PI) is currently declining while the population on the Commander Islands (CI which includes Bering and Medny Islands) is stable. The reasons for the different ...
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Rousseau, Ludivine Blandine (Texas A&M University, 2007-09-17)Phocid seals (true seals, Order Carnivora, Family Phocidae) use a diverse array of breeding habitats and strategies, and produce many vocalizations. Therefore, phocids are well suited as subjects for study of reproductive ...
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Davis, Ian Patrick (2018-06-01)Sea otters are generalist predators that feed on benthic megainvertebrates in littoral waters of the North Pacific. Because of their elevated metabolism, they consume up to 24% of their body weight daily and have a strong, ...