关键词: 褐家鼠, 不育, 雄性, 社群, 生殖行为

Abstract: Objective To study the socially productive behaviour on sterile male of Rattus norvegicus.Methods(1) The behavioral frequency of male on chase,fighting,mounting of norway rat which divited into five groups,every group had 6 individuals that containing sterilely high grade(2,group 1),major low grade(5,group 2),fewer low grade(2,group 3),mixing with normal individuals 4,1,4 making 3 groups together with 6 sterile individuals(group 4) and 6 normal males (control,group 5) then constituting in 5 groups were observed in the night.(2) To use above five groups of male mixed with 10 females of unpregnant,respactively within(12 h),after 2 weeks killed the females and observed the rate of pregnant and the number of embryo.Results(1) The frequency of chase and fighting in the group of high grad were 71.4/5 min,23.5/5 min respectively and the rate of pregnant on females were 1/10,but major low grade 17.9,11.02,4/10,the fewer low grade 67.4,20.9,1/10,the group of sterility 64.4,22.0,but the rate of pregnant on control 7/10.(2) The fequency of mounting in the group of high grade was 11.7/5 min,major low grade 17.0,fewer low grade 11.0,sterility 12.4.(3) The behavioral frequency of attacking in high grade became into stronger obviously then the low grade so long as the rat of high group existing in society but yet the frequency of mating was decrease that was confirmed by statistical computing.Contrary to what the low grade showed,the behavioral frequency of attacking and mounting was took place.Conclusion The socially reproductive behavior-sexual function on R.norvegicus after which dealing with sterility had not effect in the male.Due to the double action on competitively interference and sterility of sterile male impelled the rate of pregnant marked drop in society of norway rat.