. Current herpetology. Reptiles; Herpetology. NISHIKAWA ET AL.—LOTIC BREEDING HYNOBIUS FROM AMAKUSA IS. recorded as the number of costal folds between those tips. In this character, a plus value indicates overlap and a minus value indicates separation. We also counted the numbers of teeth on the vomerine (VTN), upper jaw (UJTN), and lower jaw (LJTN). Differences in SVL and ratio values among samples were statistically tested by Student's t-test and Mann- Whitney's U test, respectively. The definitions of characters followed Matsui (1987). The significance level was 95 ^o in all these statisti-
. Current herpetology. Reptiles; Herpetology. NISHIKAWA ET AL.—LOTIC BREEDING HYNOBIUS FROM AMAKUSA IS. recorded as the number of costal folds between those tips. In this character, a plus value indicates overlap and a minus value indicates separation. We also counted the numbers of teeth on the vomerine (VTN), upper jaw (UJTN), and lower jaw (LJTN). Differences in SVL and ratio values among samples were statistically tested by Student's t-test and Mann- Whitney's U test, respectively. The definitions of characters followed Matsui (1987). The significance level was 95 ^o in all these statisti- cal tests. To summarize the morphological relation- ships among populations studied, we performed canonical discriminant analyses (CDA) with the CANDISC procedure (SAS, 1990). In these analyses, we omitted TAL because not all individuals had intact tails. Results Habitat, life history, and morphology The salamanders were collected in the daytime under fallen leaves and gravel along a small stream (maximum width = 3 m) on 7 April and 7 May 2002. The stream was surrounded by a forest of planted cedars (Cryptomeria japonica) and its banks were covered with native plant species. This type of environment was typical of the montane regions on Kamishima Island (Fig. 2A). The bottom of the stream was covered mainly with rocks (Fig. 2B). There were small waterfalls (ca. 1 m in height) near the place where we found salamanders. Nine males, one female, and two juveniles were collected on 7 May 2002 from one local- ity. The testes and ovaries of these adults were atrophied. Fourteen larvae were also collected on 14 October 2002 in the moderately flowing stream along which metamorphs had been collected. These larvae were found at night near the banks of the stream. Morphological data of the adults are sum- marized in Tables 1-3. Males were smaller in SVL and had relatively longer and stouter limbs than in the single female. In all adults, the head was moderately depressed and body was ro
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Keywords: ., bookcollectionbiodi, booksubjectherpetology, booksubjectreptiles
