Attracted by the same sex, or repelled by the opposite sex? - Sexual segregation in Pere David's deer

Sexual segregation behavior has attracted deep interest of zoologists in re cent years. People have put forward many hypotheses to explain the phenomen on. We recommended two indices for measuring the intensity of aggregation a nd sexual segregation in animals, and applied those measurements to the stu dy of aggregation and sexual segregation in free-ranging Pere David's deer. We quantified the aggregation and segregation behavior with those methods and compared the intensities of sexual segregation in different seasons wit h statistic means. At the same time, the Nutritional Strategy Hypothesis, t he Social-factor Hypothesis and Reproductive Strategy Hypothesis were teste d in the study. We discovered that aggregation in free ranging Pere David's deer was high in winter but low in summer. Sexual segregation in free rang ing Pare Danid's deer is caused by the reproductive strategy of different s exes, the highest degree of sexual segregation was found in the breeding se ason not the non-breeding season in the free ranging Pere David's deer.