𝔖 Bobbio Scriptorium
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Estrogen and brood pouch formation in the marsupial frog,Gastrotheca riobambae

✍ Scribed by Jones, Richard E. ;Gerrard, Althea M. ;Roth, Jan J.

Book ID
102893458
Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
613 KB
Volume
184
Category
Article
ISSN
0022-104X

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✦ Synopsis

Abstract

Immature female Gastrotheca riobambae were treated with either 1 ΞΌg or 10 ΞΌg estradiol daily for 24 days. Both estrogen dosages elicited formation of the brood pouch, a dorsal integumentary structure which contains eggs or larvae during the breeding season. A decrease or loss of epidermal keratin, dermal chromatophore units and dermal poison glands occurred during both normal and estrogen‐induced pouch formation. Also, pouch skin exhibited dermal hypervascularity and connective tissue hyperplasia. The epidermis lining the pouch lumen possessed crypts. The importance of these changes is discussed in relation to pouch function.

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Ovarian structure of the marsupial frog
Ovarian structure of the marsupial frog Gastrotheca riobambae (Fowler)
✍ Eugenia M. Del Pino; Grace SΓ‘nchez πŸ“‚ Article πŸ“… 1977 πŸ› John Wiley and Sons 🌐 English βš– 882 KB

## Abstract The mature ovary of __Gastrotheca riobambae__ presents large oocytes (3 mm in diameter) of pale yellow color. After ovulation and the beginning of embryonic incubation, the empty postovulatory follicles can be recognized in the ovary for about 30 days. The granulosa of these follicles n