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Full-Text Articles in Life Sciences
Survival, Growth, And Radula Morphology Of Postlarval Pinto Abalone (Haliotis Kamtschatkana) When Fed Six Species Of Benthic Diatoms, Lillian Miller Kuehl
Survival, Growth, And Radula Morphology Of Postlarval Pinto Abalone (Haliotis Kamtschatkana) When Fed Six Species Of Benthic Diatoms, Lillian Miller Kuehl
WWU Graduate School Collection
Haliotis kamtschatkana Jonas (pinto or northern abalone) is the only abalone native to the Pacific Northwest of North America. Haliotis kamtschatkana populations are in decline, and current restoration efforts in Washington State rely on out-planting hatchery-produced juveniles. Although several other abalone species are cultured extensively, little information exists on the cultivation of H. kamtschatkana, and hatchery production of this species has largely been a matter of trial and error. Hatcheries report highest mortalities in the postlarval stage, especially the first 3 to 6 months. Postlarvae feed on films of benthic diatoms, and the purpose of this study was to …
Feeding Success Of Harbor Seals In Relation To Hunting Technique At Whatcom Creek, Mackenna Newmarch
Feeding Success Of Harbor Seals In Relation To Hunting Technique At Whatcom Creek, Mackenna Newmarch
Scholars Week
Factors that influence hunting success of seals and sea lions are underrepresented in studies of animal behavior. This is a critical interaction to understand when evaluating the top-down effects of pinnipeds on endangered Pacific salmon (Oncorhynchus spp.). In the Pacific Northwest, harbor seals (Phoca vitulina) consume a very large number of individual salmon, species that are a valuable resource and the subject of costly restorative efforts. A salmon hatchery in Whatcom Creek estuary of downtown Bellingham, Washington, attracts harbor seals that prey on returning adult Pacific salmon. The convenient location and small size of the site allows consistent observation of …
The Social Structure Of Golfo Dulce Bottlenose Dolphins (Tursiops Truncatus) And The Influence Of Behavioural State, Kelsey Moreno, Alejandro Acevedo-Gutiérrez
The Social Structure Of Golfo Dulce Bottlenose Dolphins (Tursiops Truncatus) And The Influence Of Behavioural State, Kelsey Moreno, Alejandro Acevedo-Gutiérrez
Biology Faculty and Staff Publications
Ecological factors such as habitat and food availability affect the social structure of bottlenose dolphins (Tursiops spp.). Here, we describe the social structure of bottlenose dolphins (T. truncatus) in Golfo Dulce, Costa Rica, a semi-enclosed, fjord-like tropical embayment resembling a pelagic system. We also examine behaviour-linked social strategies by comparing social structure relative to behavioural state: feeding versus non-feeding. We analysed 333 sightings over 210 days from boat-based surveys. Despite the uniqueness of the area, the 47 analysed adults had a social structure similar to other populations: a well-differentiated fission–fusion society with sex-specific patterns of associations …