Reproduction, oviposition-site selection, and tadpole oophagy of an arboreal nester, Chirixalus eiffingeri (Rhacophoridae), from Taiwan

被引:62
作者
Kam, YC [1 ]
Chuang, ZS [1 ]
Yen, CF [1 ]
机构
[1] NATL CHANGHUA UNIV EDUC,DEPT SCI EDUC,CHANGHUA 50080,TAIWAN
关键词
D O I
10.2307/1564706
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Reproductive and nesting ecology of Chirixalus eiffingeri was studied in two bamboo tree habitats in the Chitou area, Taiwan. Water-filled cups in cut bamboo were visited weekly between 0900-1700. Oviposition site characteristics, clutch size, and snout-vent length of male frogs, if present, were recorded. 205 egg clutches were deposited between 21 February, and 5 August 1994. 39% of the bamboo cups were used as deposition sites, and one third of used cups were reused at least once. Complete mortality occurred in 21.5% of the clutches, and fungal infections, flooding, dehydration, and predation were sources of mortality. Frogs chose higher bamboo trunks with less vegetative cover and deeper cups with more water for nesting, suggesting that water availability was the most important determinant of oviposition site selection. Egg clutches that were deposited in short bamboo trunks (BTH) with large hole diameters (ID) were more likely to produce tadpoles. In a laboratory experiment, tadpoles that were fed eggs increased in mass throughout the study period, whereas unfed tadpoles did not grow at all. Tadpoles consumed an average of 87 eggs from hatching to metamorphosis (Gosner stage 41), suggesting that the cost for maternal brood care is expensive.
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页码:52 / 59
页数:8
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