CAJ | 학술논문

我们在北京麋鹿苑研究了发情期雄性麋鹿的社会行为、社会等级和血清皮质醇水平,并分析了三者间的相互关系.按照雄性麋鹿的行为,将雄性麋鹿分为优势群和从属群.优势群包括群主和挑战者,从属群包括单身汉和被淘汰群主.使用SJ-Ⅰ型事件记录器进行常规行为取样,用放射免疫分析法测定血清皮质醇含量.发现:(1)优势雄鹿的发情行为频次明显高于从属雄鹿;(2)攻击行为的发生频次在两组间无显著差异;(3)血清皮质醇含量在两组间也无显著差异.由此我们认为,发情期雄性麋鹿的社会等级序位影响许多行为的表达,优势雄鹿成功交配的机会比从属雄鹿多.而攻击行为和肾上腺皮质醇的分泌与社群等级无明显相关,可能是麋鹿在圈养状态下的一种适应策略,这将有利于缓解发情期雄鹿的紧张,从而允许更多的能量投放在发情交配上.
아문재북경미록원연구료발정기웅성미록적사회행위、사회등급화혈청피질순수평,병분석료삼자간적상호관계.안조웅성미록적행위,장웅성미록분위우세군화종속군.우세군포괄군주화도전자,종속군포괄단신한화피도태군주.사용SJ-Ⅰ형사건기록기진행상규행위취양,용방사면역분석법측정혈청피질순함량.발현:(1)우세웅록적발정행위빈차명현고우종속웅록;(2)공격행위적발생빈차재량조간무현저차이;(3)혈청피질순함량재량조간야무현저차이.유차아문인위,발정기웅성미록적사회등급서위영향허다행위적표체,우세웅록성공교배적궤회비종속웅록다.이공격행위화신상선피질순적분비여사군등급무명현상관,가능시미록재권양상태하적일충괄응책략,저장유리우완해발정기웅록적긴장,종이윤허경다적능량투방재발정교배상.
We conducted an experiment in the Beijing Milu Park to study the social behavior of male Pere David's deer,Elaphurus davidianus, and explored the relationship between social position and serum cortisol level. We classified the stags into a dominant group which included the "harem master" and "challenger", and a subordinate group which included "bachelor" and "post-rut master", then monitored behavior of these stags whilst analyzing serum cortisol concentrations in the observed stags. We found that (1) tbe dominant stags displayed rut behaviors more frequently than the subordinate stags, (2) there was no significant difference in aggressive behaviors between the two groups, and (3) although it seemed that serum cortisol concentrations of one harem master was higher than that of one bachelor, we did not find the significant difference of cortisol levels between the two groups. We conclude that social rank affects social behaviors of Pere David's deer stag during rut. Pere David's deer stag maintain reproductive competence in the face of increased physical and psychological stress during rut.