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Full-Text Articles in Animal Sciences
Dialect Use Within A Socially Fluid Group Of Southern Resident Killer Whales, Orcinus Orca, Courtney Elizabeth Smith
Dialect Use Within A Socially Fluid Group Of Southern Resident Killer Whales, Orcinus Orca, Courtney Elizabeth Smith
Master's Theses
Resident killer whales, Orcinus orca, of the Northeastern Pacific form stable kinship-based matrifocal associations and communicate with group-specific repertoires of discrete calls (dialects) that reflect these associations. The gradual fission of matrilines is usually consistent with dialect variations among groups that may manifest as differences in call usage at the repertoire level or subtle structural differences of the calls themselves. Therefore, matrilines that are more closely related tend to be more acoustically similar. Within the endangered community of Southern Resident killer whales (SRKWs), recent evidence shows that one particular group (L pod) exhibits the lowest rate of intrapod association …
Effects Of Animal Management Changes On The Activity Budgets And Walking Rates Of Zoo Elephants, Angela Dawn Mackey
Effects Of Animal Management Changes On The Activity Budgets And Walking Rates Of Zoo Elephants, Angela Dawn Mackey
Dissertations
The current study aimed to assess the effects of two management strategies, weekly rototilling of the enclosure and the provision of unpredictable foraging opportunities, on the daily behavior of six elephants housed at the San Diego Zoo. Observations took place from January to June 2013 and were conducted throughout a 24- hour period. The study was divided into three phases, each two months in duration. During the first phase (baseline) no changes were made to the current management routine of the elephants. In Phase 2, rototilling of the elephant enclosures was increased from once monthly to once per week, while …
Revision Of 13 Genera Of Haploporidae (Trematoda), Eric Edward Pulis
Revision Of 13 Genera Of Haploporidae (Trematoda), Eric Edward Pulis
Dissertations
The Haploporidae is a family of digeneans united by the combination of the possession of a hermaphroditic sac and a single testis or, rarely, two tandem testes. The major divisions in the Haploporidae have been based on the organization, development, and nature of the male and female reproductive systems. Overstreet and Curran (2005) has been the only attempt to organize the genera of the Haploporidae in a subfamilial framework. In the present work the validity of the subfamily Waretrematinae by Overstreet and Curran (2005) is assessed by morphological and molecular methods, based on original descriptions, type and vouchered, specimens and …