This serpent exhibits an obviously female-biased sexual-size dimorphism (SSD). It often retreats into vegetation during daytime and moves to ambush sites at dusk. Furthermore, a pattern of male-biased sex ratio was found in a population of Trimeresurus s. stejnegeri at Tsaochiao in the northern Taiwan. In this dissertation, I used demographic analysis from an over nine-year (1996-2005) mark-recapture data set of the population of Trimeresurus s. stejnegeri at Tasochiao, to explore the causes of observed male-biased sex ratio and female-biased SSD. Additionally, I applied an experimental approach to investigate the role of temperature, prey availability and vegetation density with respect to diurnal retreat site selection of the Chinese green tree vipers in outdoor enclosures.
