VARIATION IN COPULATION DURATION IN MNAIS-PRUINOSA-PRUINOSA SELYS (ODONATA, CALOPTERYGIDAE) .2. CAUSAL FACTORS
VARIATION IN COPULATION DURATION IN MNAIS-PRUINOSA-PRUINOSA SELYS (ODONATA, CALOPTERYGIDAE) .2. CAUSAL FACTORS
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DOI:
10.1007/bf00300052
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发表时间:
1989-01-01
影响因子:
2.3
通讯作者:
TSUBAKI, Y
中科院分区:
文献类型:
--
作者:
SIVAJOTHY, MT;TSUBAKI, Y
The Japanese calopterygid damselfly Mnais pruinosa pruinosa shows three distinct copulation durations (Siva-Jothy and Tsubaki 1989). A variety of factors which might influence copulation duration were investigated. Results indicate that the temperature in the vicinity of copulating pairs, the rate at which males encountered receptive females, territory quality, the rate of agonistic interactions between males, and female gravidity and female ''wilingness'' to oviposit have no effect on copulation duration. The most significant factor was the location of the site at which males captured their mates. We suggest that under natural conditions the location of the captures site provides males with reliable, indirect information about a female''s intention to oviposit: it is important for males of this species to acquire such information since sperm precedence, and therefore reproductive succes, is in part dependent on the interval experienced by females between copulation and subsequent oviposition. The results are discussed and it is suggested that the three observed mate-securing tactics of M. p. pruinosa are faculative and information-dependant.