Gonadotropic activity of the pituitary gland in relation to the seasonal sexual cycle of the cottontail rabbit (Sylvilagus floridanus Mearnsi)
✍ Scribed by Elder, Wm. H. ;Finerty, John C.
- Publisher
- John Wiley and Sons
- Year
- 1943
- Tongue
- English
- Weight
- 754 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0003-276X
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✦ Synopsis
The purpose of this work was to investigate the reproductive cycle of a non-hibernating wild mammal. The cottontail rabbit (Sylvilagus floridanus mearnsi Allen) was selected for this study because it is an abundant species of wide occurrence and of great economic importance. The weight changes in the endocrine glands directly related to the breeding cycle and the changes in the accessory reproductive organs of both male and female cottontail rabbits have been followed throughout the year t,o determine the relationship which exists between the degree of development of the reproductive tract and the gonadotropic content and percentage of cell types in the pituitary gland. The endocrine factors in the sexual cycle of a hibernating wild mammal, the thirteen-lined ground squirrel, have been thoroughly investigated, but complete results have been published only for the male sex (Wells, ' 35 and '38; Moore et al., '34; Nelson, '36). Brief notes on the measurements of the gonads of cottontail rabbits have been recorded by Hamilton ( '40), Dalke ( '37), and Trippensee