Habitat selection and its relation to reproductive development of the rough skinned newt, Taricha granulosa (Skilton) on southern Vancouver Island

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dc.contributor.authorOliver, Marlene Gail Saksen_US
dc.date.accessioned2024-08-15T16:36:51Z
dc.date.available2024-08-15T16:36:51Z
dc.date.copyright1974en_US
dc.date.issued1974
dc.degree.departmentDepartment of Biology
dc.degree.levelMaster of Science M.Sc.en
dc.description.abstractThe rough-skinned newt was studied from 1970 to 1973 at a permanent pond near Victoria, British Columbia, to determine its reproductive development, especially during the nonbreeding season, in relation to habitat selection differences observed be tween males and females. Newts were sampled on land by hand and trapping, in the lake during SCUBA dives and by attraction to a nightlight. Animals were toe-clipped for easy recognition on recapture. The data indicated that normally adult males are permanently aquatic, while adult females are terrestrial during the nonbreeding season, from September to March, and that individuals could breed in successive years. In 1972, a year of low rainfall, some males overwintered on land while some females remained in the lake. Analyses of morphologic secondary sex character and gonad histology suggested that males overwintering in the lake and females overwintering on land could fully mature reproductively the following breeding season. Males overwintering on land and females overwintering in the lake could not. It is speculated that climatic factors partly account for these observations.
dc.format.extent113 pages
dc.identifier.urihttps://hdl.handle.net/1828/19178
dc.rightsAvailable to the World Wide Weben_US
dc.titleHabitat selection and its relation to reproductive development of the rough skinned newt, Taricha granulosa (Skilton) on southern Vancouver Islanden_US
dc.typeThesisen_US

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