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UBC Theses and Dissertations
Seasonal changes in the cytology of the pituitary gland and the ovary of the goldfish. Beach, Alan Winston
Abstract
Goldfish ova begin rapid maturation in November. Maturation is completed in June and July. Seasonal cycles in mature and resorbing follicles were correlated with changes in basophil counts of the pituitary gland. Cytological evidence confirms the expected pituitary control of cyclic ovarian activity. Resorbing follicles are found all year but are more abundant during sexual maturity, and are particularly numerous in fish which failed to spawn. Goldfish injected with extracts of salmon pituitary for twelve days showed no cytological changes in the ovary. It is concluded that the granulosa is responsible for removal of resorbing ova and that these resorbing ova are the means of removing surplus eggs.
Item Metadata
Title |
Seasonal changes in the cytology of the pituitary gland and the ovary of the goldfish.
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1956
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Description |
Goldfish ova begin rapid maturation in November. Maturation is completed in June and July. Seasonal cycles in mature and resorbing follicles were correlated with changes in basophil counts of the pituitary gland. Cytological evidence confirms the expected pituitary control of cyclic ovarian activity. Resorbing follicles are found all year but are more abundant during sexual maturity, and are particularly numerous in fish which failed to spawn. Goldfish injected with extracts of salmon pituitary for twelve days showed no cytological changes in the ovary. It is concluded that the granulosa is responsible for removal of resorbing ova and that these resorbing ova are the means of removing surplus eggs.
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Genre | |
Type | |
Language |
eng
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Date Available |
2012-02-02
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0106252
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.