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- Title
Impacts of temperature on growth, development and survival of larval Bufo (Pseudepidalea) viridis (Amphibia: Anura): implications of climate change.
- Authors
Dastansara, Nemat; Vaissi, Somaye; Mosavi, Jahan; Sharifi, Mozafar
- Abstract
The changing global climate poses a new threat to amphibian populations since amphibian growth and development are strongly influenced by temperature. In general, low temperature reduces their physiological processes, decreasing development and growth rates. However, metamorphs of some amphibian species may be larger than their conspecifics grown at high temperatures. The increased temperature can reduce the metamorphic size in some species, whereas in other species, high temperatures accelerate growth with no changes in body size at metamorphosis. In order to test the influence of water temperature on larval growth, development and survival of the green toadBufo viridis, 200 eggs were raised separately at two different water temperatures (18 and 21 °C) for the period of 16 weeks. The results show that the larvae reared at high temperature reached metamorphosis significantly faster (86.58 ± 13.47 days) than those reared at low temperature (105.4 ± 7.83 days). However, the larvae reared at high temperature showed a significant increase in survival rate (64% ± 34.22) compared to the larvae reared at low temperature (23.57% ± 4.18). The growth rate of the larvae reared at higher temperature was higher than that of the larvae reared at low temperature but this difference was not significant. In contrast, the average size at metamorphosis (SVL) at low temperature was significantly larger (19.05 ± 1.12 mm) compared with that of the individuals that metamorphosed at the relatively higher temperature (16.11 ± 1.54 mm).
- Publication
Zoology & Ecology, 2017, Vol 27, Issue 3/4, p228
- ISSN
2165-8013
- Publication type
Article
- DOI
10.1080/21658005.2017.1360037