. Current herpetology. Reptiles; Herpetology. Oviposition site Maximum depth Fig. 2. Comparison of the water depth at oviposition sites of Buergeria japonica (left) and the maximum water depth (right: see text for definition: both in mm) between streams 1 and 2. Vertical bars denote 1 SD. E E, 0 o c TO Q 7000 6000 5000 4000 3000 2000 â Stream 1 â¡ Stream 2. Distance from the bank to oviposition site Stream width Fig. 3. Comparison of the distance from the nearest bank to oviposition sites of Buergeria japonica (left) and the stream width (right: see text for definition: both in mm) between str
. Current herpetology. Reptiles; Herpetology. Oviposition site Maximum depth Fig. 2. Comparison of the water depth at oviposition sites of Buergeria japonica (left) and the maximum water depth (right: see text for definition: both in mm) between streams 1 and 2. Vertical bars denote 1 SD. E E, 0 o c TO Q 7000 6000 5000 4000 3000 2000 â Stream 1 â¡ Stream 2. Distance from the bank to oviposition site Stream width Fig. 3. Comparison of the distance from the nearest bank to oviposition sites of Buergeria japonica (left) and the stream width (right: see text for definition: both in mm) between streams 1 and 2. Vertical bars denote 1 SD. These results may suggest that this frog chooses oviposition sites at least partially on the basis of water depth and distance from the bank. However, these issues definitely need further careful verification, particularly by considering correlation among these topo- graphic parameters and such chemical param- eters as the salinity and pH of the water. ACKOWLEDGEMENTS I am grateful to M. Imafuku and A. Mori for their valuable comments on the manuscript. 1 also thank colleagues of the Laboratory of Ethology, Kyoto University for their useful comments. The Yona Research Station, Uni- versity of the Ryukyus, permitted me to use the facility for the fieldwork. This work was supported in part by a Grant-in-Aid for 21st Century COE Research, Kyoto University (A2). Literature Cited Beebee, T. J. C. 1985. Salt tolerances of natterjack toad {Bufo calamita) eggs and larvae from coastal and inland populations in Britain. 1: 14-16. Freda, J. and W. A. Dunson. 1985. The influence of external cation concentration on the hatching of amphibian embryos in water of low pH. Can. J. Zool. 63: 2649-2656. Freda, J. and W. A. Dunson. 1986. Effects of low pH and other chemical variables on the local distribution of amphibians. Copeia 1986: 454- 466. Gordon, M. S., K. Schmidt-Nielsen, and H. M. Kelly. 1961. Osmotic regulation in the crab- eating f
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