Statistical Analysis for Echis Pyramedium Environment and its thermo Adaptation at Jazan Region- Kingdom of Saudi Arabia

摘要

The study examined the thermo relationship for Echis pyrmedium during a whole year period stating fromMarch 2003 to February 2004 at Jazan Region at Kingdom of Saudi Arabia, which represent the existence ofthis phenomenon. In this study, the preferable temperatures were deteronind during illumination and darkness,least critical temperature, highest critical temperature in labatories, and were compared to field records foractual temperature in soil, air and body present at observed environment to determine thermo type demands andits thermo adaptation in this region environment. SPSS software (Statistical Package for Social Studies) as usedto conduct statistical tests and find some relationship such as maximum, minimum, average temperature valuesand to find out standard error for different laboratial temperature for animals at day and night, to find out winterand summer environment. Excel software was used to draw frequency values and different statisticalrelationship found in this study. Results of the study indicated a significant different for preferred bodytemperature using Echis pyarnidun in the labatory and field, as it was found that the average preferred bodytemperature in Echis pyramidum environment was 29.67Co at field, while the average preferred bodytemperature at night for Echis pyramidum was 27.15 Co . as for the average preferred temperature at daylightwas 28.29 Co. it was found that labotarial body temperature at Echis pyramidum environment rises from theearly morning hours (start of light period) and continuous to rise until the end of the day (start the darkness) thendecrease other time, despite the fact that thermo range for Echis pyramidum begins at 21.8 Co and ends at 35.1Co. Most stops ranges between 26.9 Co -29.3 Co , with an average of 27.19 Co , which is lesser than the bodytemperature average in Echis pyramidum by two degrees (average = 29.67 Co ). these results can be explained indifferent ways, and the most significant is that the absence of physical exhaustion and environmental pressurethe snake may face while searching for food. Results of the study indicted that the preferred thermo range forEchis pyramidum and the average labaratorial and environmental body temperature is no different fromprevalent snakes species found in kingdom of Saudi Arabia and this wide thermo range is significant in reducingenergy consumption as it helps the snake to reach the required preferred body temperature for a certain activityat adequet time, and the short activity periods is also justified by availability of prays found in the environment.