Specific dynamic action, apparent assimilation efficiency, and digestive rate in an arboreal pitviper, Trimeresurus stejnegeri stejnegeri

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Specific dynamic action, apparent assimilation efficiency, and digestive rate in an arboreal pitviper, Trimeresurus stejnegeri stejnegeri
出版類型SCI(Sciences Citation Index)
出版年度2008
AuthorsTein-Shun Tsai, 蔡添順, How-Jing Lee 李後晶, & Ming-Chung Tu 杜銘章
開始頁1139
頁數12
出版日期2008 / 8
其他編號0000
中文摘要

The major aims of this study were to assess the effects of temperature (15-35 degrees C) and meal size (less than 30% snake mass) on the metabolism and digestive physiology of Trimeresurus stejnegeri stejnegeri Schmidt, 1925 and to compare the results with those of terrestrial snakes. Specific dynamic action (SDA), peak Vo(2), and scope of peak Vo(2) increased with meal size. Temperature had little effect on SDA. With regression analysis, we found that baseline metabolic rates of T.as.astejnegeri were generally smaller than that for frequent feeders and larger than that for infrequent feeders. We generalized three types of SDA profiles among T.as.astejnegeri and terrestrial snakes (including frequent and infrequent feeders). Trimeresurus stejnegeri stejnegeri had a more shallow and extended profile of postprandial metabolism, which did not support our hypothesis that the pace of digestive metabolism of arboreal snakes is faster than that of terrestrial snakes. The apparent assimilation efficiency (range 0.698-0.884) was significantly lower at 15 degrees C. At the preferred temperature (26.5-28.8 degrees C) for a postprandial 50 g snake, the simulated ratios of four parameters (time to peak Vo(2), first defecation time, gastric digestion time, and final defecation time) to SDA duration approximated 0.2, 0.5-0.7, 0.7, and 1.1, respectively.

期刊名稱Canadian Journal of Zoology
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