Habitat Selecttin And Adaptation Mechanisms On Environmental Temperature Of Zootoca Vivipara And Lacerta Agilis

Zootoca vivipara and Lacerta agilis are both Lacertian. Zootoca vivipara belongs to ovoviviparity species and Lacerta agilis belongs to egg-laying species. They are distributed in Xinjiang region of China, and they have very strong thermoregulation ability to adapt to the cold climate. They are the main objects of the thermal biology and evolutionary biology researches.This research studied two lizards' behavioral ecology and temperature ecology through the methods of combining the field investigation and laboratory research. To determine the effect of the importance of ecological factors on population distribution and the relationship between these two species, we measured and analyzed the main ecological factors of two kinds of lizards' spring habitat. We have analyzed the influence of temperature on two lizards' body temperature, female reproductive ability and larval growth under the controlled laboratory conditions. In order to provide a scientific basis on further understanding of the two lizards habitat selection, relationship between species, the temperature regulating mechanism and the ability to adapt to the ambient temperature in this area, we discussed two lizards' thermoregulation ability and the relationship between the ambient temperature.The main content of this study include three aspects: the comparison of two lizards' spring habitat selection; the influence on female breeding and the larvae of two lizards' incubation temperature; and the research on two lizards thermoregulation ability. The main researches result in the following aspects:1. Zootoca vivipara and Lacerta agilis have significant differences in the spring habitat selection. And there is no obvious interspecific competition.2. Temperature has a significant impact on female reproduction of two lizards. The optimal breeding temperature of Zootoca vivipara is 27?, while 30? for Lacerta agilis. On the contrary, temperature has a less effect on two lizards' larval morphological and growth.3. Two lizards' body temperature and ambient temperature were positively correlated. The daily average temperature of Zootoca vivipara is(24.04±2.55)? which is higher than Lacerta agilis, whose daily average temperature is(21.69±1.94)?. The Physiological temperature adjustment ability of Zootoca vivipara is higher than Lacerta agilis. Physiological thermoregulation ability of larvae is higher than adults.