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Somitogenesis in the marsupial frog Gastrotheca riobambae

Gatherer, Derek and del Pino, E. M. (1992) Somitogenesis in the marsupial frog Gastrotheca riobambae. International Journal of Developmental Biology, 36 (2). pp. 283-291. ISSN 0214-6282

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This paper reports the first description of somitogenesis in a non-aquatic-developing amphibian, the Andean marsupial frog, Gastrotheca riobambae. This frog develops from an embryonic disk located on top of a large yolky egg, bearing some resemblance to the embryo of the chick. Besides the histological characterization of somite formation, we quantified cell number in the developing somites of Gastrotheca, Xenopus laevis and the chick. Gastrotheca was found to have a mode of somitogenesis which has previously been encountered in the aquatic-developing toad Bombina. Somitic cell number was found to be an order of magnitude higher than that of Xenopus, and approximately double that of the chick. We discuss the possible relation between mode of somitogenesis, somitic cell number, speed of development and egg size.

Item Type: Journal Article
Journal or Publication Title: International Journal of Developmental Biology
Uncontrolled Keywords: Animals ; Anura ; Cell Count ; Chick Embryo ; Morphogenesis ; Ovum ; Xenopus laevis
Departments: Faculty of Health and Medicine > Biomedical & Life Sciences
ID Code: 66841
Deposited By: ep_importer_pure
Deposited On: 27 Sep 2013 09:17
Refereed?: Yes
Published?: Published
Last Modified: 01 Jan 2018 06:44
Identification Number:

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