ALTERNATIVE MATING STRATEGIES IN THE WATER STRIDER GERRIS-ELONGATUS (HETEROPTERA, GERRIDAE)
ALTERNATIVE MATING STRATEGIES IN THE WATER STRIDER GERRIS-ELONGATUS (HETEROPTERA, GERRIDAE)
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DOI：
10.1007/bf00295542
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发表时间：
1985-01-01
影响因子：
2.3
通讯作者：
HAYASHI, K
中科院分区：
文献类型：
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作者：
HAYASHI, K
雄性的水Gerris elongatus建立的领土，其中包括交配和产卵的网站（小块倒下的竹子）。雄性具有侵略性，经常观察到对领土和雌性的竞争。男性的中腿比女性的中腿更发达，并被用作武器。繁殖行为随着繁殖季节的推进而改变。在季节早期，未成熟的女性被男性的表面波求爱信号所吸引，然后交配，而漂浮在水面上没有产卵（类型1）。在季节中期，雄性建立领地，发出呼唤信号，吸引雌性交配和产卵，雄性交配后守卫（类型2）。在季节后期，许多女性产卵没有postcopulatory守卫附近的倒竹池草垫。非领土男性等待这些女性的到来，交配没有求爱，但交配成功率低（3型）。这些可选的交配策略似乎取决于男性大小的差异。较大的男性在许多方面上级较小的男性（建立领土，战斗，交配等）。最大的男性捍卫terriroties，并有较高的交配成功率比小的非领土男性。中型男性使用所有三种策略，根据空的领土和季节性女性分布的数量。
Males of the water strider Gerris elongatus established territories which included copulation and oviposition sites (small pieces of fallen bamboo). Males were aggressive and competition for territory and females were observed frequently. Male midlegs were more developed than female midlegs and were used as weapons. Reproductive behaviour changed as the breeding season advanced. Early in the season immature females were attracted by male surface wave courtship signals, then copulated while floating on the water surface without ovipositing (type 1). It midseason, males established territories, produced calling signals and attracted females which copulated and oviposited there with male postcopulatory guarding (type 2). In late season, many females oviposited without postcopulatory guarding on pondweed mats near fallen bamboo. Non-territorial males waited for the arrival of these females and copulated without courtship, but mating success was low (type 3). These alternative mating strategies appeared to depend on differences in male size. Larger males were superior to smaller males in many ways (establishing territory, fighting, mating etc). The largest males defended terriroties and had higher mating success than small non-territorial males. Medium sized males used all three strategies according to the number of empty territories and seasonal female distribution.