CAJ | 학술논문

理论和实验表明体形大小是许多动物择偶的重要信号.体形大小与产卵大小、最终产卵数量、后代适合度等都有着密切的关系,因此动物利用体形大小为信号来择偶可以获得高的生殖利益.目前研究交配行为和体形大小的关系的文献较少,特别在微蛛亚科.本文以浅斑近微蛛为实验材料,在室内研究了体形大小对交配行为的影响.测量了体重,体长,头胸甲与腹部的长和宽,以头胸甲的面积(头胸甲的长与宽的乘积)为变量来表示体形大小.以雄蛛的行为为依据,将其交配行为划分为4个时期:潜伏期、求偶期、插入期和纳精期,并记录了各个时期的持续时间.通过分析,发现了一种微蛛新的交配模式,即可将浅斑近微蛛的插入期分为三个阶段:首先是大约25 min长插入期,接着是一个大约15 min的中度插入期,最后是一个大约5 min的短插入期.结果表明,在本试验条件下,浅斑近微蛛的体形大小对其交配行为的潜伏期、求偶期、插入期和纳精期的持续时间都没有影响,对插入期的3个阶段的长短也没有影响.
이론화실험표명체형대소시허다동물택우적중요신호.체형대소여산란대소、최종산란수량、후대괄합도등도유착밀절적관계,인차동물이용체형대소위신호래택우가이획득고적생식이익.목전연구교배행위화체형대소적관계적문헌교소,특별재미주아과.본문이천반근미주위실험재료,재실내연구료체형대소대교배행위적영향.측량료체중,체장,두흉갑여복부적장화관,이두흉갑적면적(두흉갑적장여관적승적)위변량래표시체형대소.이웅주적행위위의거,장기교배행위화분위4개시기:잠복기、구우기、삽입기화납정기,병기록료각개시기적지속시간.통과분석,발현료일충미주신적교배모식,즉가장천반근미주적삽입기분위삼개계단:수선시대약25 min장삽입기,접착시일개대약15 min적중도삽입기,최후시일개대약5 min적단삽입기.결과표명,재본시험조건하,천반근미주적체형대소대기교배행위적잠복기、구우기、삽입기화납정기적지속시간도몰유영향,대삽입기적3개계단적장단야몰유영향.
Theoretical and empirical studies suggest that body size is an important signal used by many animals to measure the quality of their mates.Animals choosing larger mates benefit reproductive fitness via volume of egg load,proximity of oviposition and offspring fitness,etc.Literature on relationship between body size and mating behavior is scarce,especially in dwarf spider.We investigated the relation between body size and mating behavior of the dwarf spider,Eperigone fradeorum,under laboratory condition.Body mass,body length,carapace length and width,abdomen length and width were measured.Body size was measured by area of carapace(the carapace width was multiplied by its length).We grouped the mating behavior into four phases which defined by males'behavior:latency,courtship,insertion and sperm induction.Duration of every phase was recorded.An unusual pattern of male pedipalps inserting duration during copulation was discovered.The insertion had three phases which grouped by the duration of pedipalps inserting.Initial long inserting duration about 25 min was followed by a medium inserting duration(15min or so);however,subsequent short inserting decreased to approximately 5 min in duration.The results showed that body size had no influence on duration of latency,courtship,insertion,sperm induction and three phases in inserting dura.tion.