| || || Narayan, Edward Jitik.|
| || || Biology of the endangered fijian ground frog (Platymantis Vitiana) : breeding and reproductive endocrinology |
Author:Narayan, Edward Jitik.
Institution: University of the South Pacific.
Call No.: pac In Process
Copyright:Under 10% of this thesis may be copied without the authors written permission
Abstract: The Fijian ground frog [FGF] (Platymantis vitiana) is listed as a threatened amphibian species in the tropical Fiji Islands. This frog species is currently an endangered species found on four small islands (Taveuni, Gau, Viwa and Ovalau) free of the Indian mongoose (Herpestus javanicus) and a remnant population on Vanua Levu. In recent years, population assessment and one invasive species eradication project were conducted in-situ. The reproductive biology, ecology and endocrinology of the FGF are virtually unknown. Consequently, the main aims of this PhD study were to explore the biology of reproduction, ecological aspects and endocrinology of the FGF using a captive population and free-living frogs on Viwa Island, Tailevu (the smallest of the four small islands with extant FGF populations). A small population of ten FGF was maintained in an outdoor enclosure at the University of the South Pacific (USP), Suva. Using this captive population, a detailed study of the captive propagation and breeding behaviour of the FGF was explored. Additionally, non-invasive assessment of reproductive and stress hormones of the FGF was conducted on Viwa Island and in captivity in order to understand the possible mechanisms that influence the breeding cycle. This PhD thesis comprises five main chapters.