星豹蛛求偶和交配行为

以星豹蛛(Pardosa astrigera)为研究对象,在室内对其求偶和交配行为进行了描述。雄蛛"俯卧撑"式动作(push-up)在求偶中具重要作用。交配初期,两侧触肢交替插入;随交配进行,单侧触肢连续插入3~5次后才换另一侧触肢插入,触肢每插入一次,基血囊膨大多次。完整交配一次雄蛛触肢器平均插入次数为29·625。交配前求偶时间、交配持续时间和有效交配时间分别平均为6min、32min25s和11min11s。星豹蛛雄蛛可进行多次交配,而雌蛛一般为单次交配。雌蛛交配状态(是否已经交配)影响其同类相食行为,已交配雌蛛对雄蛛同类相食率显著高于未交配雌蛛对雄蛛同类相食率。

Courtship and Mating Behaviors of the Wolf Spider Pardosa astrigera

Courtship and mating behaviors of the wolf spider Pardosa astrigera were determined in laboratory.Results indicated that the "push-up" behavior of the male plays an important role in courtship.Copulation in this wolf spider species was characterized by a pattern which male alternated the use of palps after each insertion at first,and followed by consecutive insertions with each palp,with multiple expansions of the hematodocha per insertion.The numbers of palp insertions in each complete mating counted 29.625 on average.Durations of precopulatory courtship,copulation and effective copulation of the pairs mated in laboratory averaged 6 min,32 min 25 s and 11 min 11 s respectively.Results of multiple mating suggest that female P.astrigera be essentially monandrous,while males be polygynous.Female mating status influenced sexual cannibalism,in which mated females killed the mates more frequently than virgin ones.