Archive image from page 195 of Current herpetology (2000). Current herpetology currenthe222420032004niho Year: 2000 ( 76 Current Herpetol. 23(2) 2004 W T Fig. 2. Body temperatures of O. kikuzatoi (BT) in relation to water temperatures (WT) at capture. Open circles represent data obtained in the daytime, and closed circles at night. Arrows indicate data from the same recaptured individual. Vertical bars denote the differences of BT from air temperatures (AT) at capture. The solid line shows the location of BT=WT. The dotted line and dashed line repre- sent regression lines for data obtained
Archive image from page 195 of Current herpetology (2000). Current herpetology currenthe222420032004niho Year: 2000 ( 76 Current Herpetol. 23(2) 2004 W T Fig. 2. Body temperatures of O. kikuzatoi (BT) in relation to water temperatures (WT) at capture. Open circles represent data obtained in the daytime, and closed circles at night. Arrows indicate data from the same recaptured individual. Vertical bars denote the differences of BT from air temperatures (AT) at capture. The solid line shows the location of BT=WT. The dotted line and dashed line repre- sent regression lines for data obtained in the warmer (, April-September, n=6) and the cooler seasons (November-March, n=4), respectively. See text for their equations. but not in position (F=, P>). Of the total of ten snakes examined (count- ing the recaptured male in duplicate), only one male, captured at 04:00 of 22 December (BT=, WT=, AT= C, and WD = 38 mm), had stomach contents, which consisted of three half-digested juveniles of the freshwater crab, Candidiopotamon kumeji- mense. In the study area, freshwater crabs of comparable sizes were seen in relatively high density from May to September, and in distinctly lower density from November to April (Appendix 2). For the five females, no oviductal eggs were detected by palpation. Discussion A number of studies has been carried out on the seasonal activity patterns in snakes includ- ing some more or less aquatic species (, Mushinsky et al [1980], Shine and Lambeck [1985], and other papers cited in Gibbons and Semlitsch [1987]). Most such studies are about species in almost aseasonal tropics, or at much higher latitudes where low temperatures have crucial effects upon the winter activity of ecto- therms by forcing them into hibernation. In contrast, very little information is available regarding snakes in the subtropical regions (including the Ryukyu Archipelago), where seasonal climatic changes are prominent on the one hand, but
Size: 1417px × 1411px
Photo credit: © Bookive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 2000, archive, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, drawing, herpetology, historical, history, illustration, image, kyoto_the_herpetological_society_of_japan, nihon_hachu_ryoseirui_gakkai, page, picture, print, reference, reptiles, vintage
