第19届国际生物学奥林匹克竞赛试题（7）实验A-2植物科学（动物学）

动物解剖学和生理学 总分66分,时间60min。 在这组测试中,要完成下列2个任务： 任务1：研究动物骨骼系统。（54分） 任务2：半量化估计含氮物代谢的废物（或无用产物）。（12分）     

闻书识人——郑光美院士和《普通动物学》

学过动物学的学生可能都知道郑光美这个名字,他主编的《普通动物学》在动物学教育领域发挥了重要作用。《普通动物学》第1版自20世纪70年代出版以来,已经累计发行50余万册,是国内教师和学生公认的质量上乘的优秀教材。第4版将于2009年7月以全新的面貌出版。     

Temperature acclimation affects thermal preference and tolerance in three Eremias lizards

We acclimated adult males of three Eremias lizards from different latitudes to 28℃,33℃ or 38℃ to examine whether temperature acclimation affects their thermal preference and tolerance and whether thermal preference and tolerance of these lizards correspond with their latitudinal distributions.Overall,selected body temperature（Tsel）and viable temperature range（VTR）were both highest in E.brenchleyi and lowest in E.multiocellata,with E.argus in between;critical thermal minimum（CTMin）was highest in E.multiocellata and lowest in E.brenchleyi,with E.argus in between;critical thermal maximum（CTMax）was lower in E.multiocellata than in other two species.Lizards acclimated to 28℃ and 38℃ overall selected lower body temperatures than those acclimated to 33℃;lizards acclimated to high temperatures were less tolerant of low temperatures,and vice versa;lizards acclimated to 28℃ were less tolerant of high temperatures but had a wider VTR range than those acclimated to 33℃ and 38℃.Lizards of three species acclimated to the three temperatures always differed from each other in CTMin,but not in Tsel,CTMax and VTR.Our results show that：temperature acclimation plays an important role in influencing thermal preference and tolerance in the three Eremias lizards,although the degrees to which acclimation temperature affects thermal preference and tolerance differ among species;thermal preference rather than tolerance of the three Eremias lizards corresponds with their latitudinal distributions.