caa a22 4500 477075975 CHVBK 20180405111438.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF02514969 doi (NATIONALLICENCE)springer-10.1007/BF02514969 Competitive habitat utilization in the damselfly, Mnais nawai (Zygoptera: Calopterygidae) coexisting with a related species, Mnais pruinosa [Elektronische Daten] [Shintaro Nomakuchi, Kazunori Higashi] Reproductive behaviors related to habitat utilization were studied in males of the damsefly,Mnais nawai, which has two male forms, territorial orange-winged males (nawai) and non-territorial pale-orange-winged males (sahoi), at the upper part of a mountain stream where they partiallycoexist with a related species,Mnais pruinosa, which also has two male forms, territorial orange-winged males (esakii) and non-territorial hyaline-winged males (strigata). These two species showed parapatric distribution; the lower part of the stream was occupied byM. nawai, and the upper part byM. pruinosa. In the present study, cross-matings occurred between bothMnais species, although normal intraspecific matings occurred more frequently than cross-matings. Territorial males of both species copulated with conspecific females that entered their territory and guarded the ovipositing females, probably to avoid sperm displacement resulting from subsequent copulations. Severe competition for oviposition sites by territorial males even occurred between the two species. On the other hand, non-territorial males of both species have alternative mating strategies (including several tactics such as sneaking, takeover and interception). The possible benefits from conflict among territorial males of both species is discussed. Society of Population Ecology, 1996 Mnais nationallicence male polymorphism nationallicence mating strategy nationallicence territory nationallicence interspecific competition nationallicence Nomakuchi Shintaro Department of Biology, College of Liberal Arts, Saga University, 840, Saga, Japan aut Higashi Kazunori Department of Biology, College of Liberal Arts, Saga University, 840, Saga, Japan aut Researches on Population Ecology Springer-Verlag 38/1(1996-06-01), 41-50 0034-5466 38:1<41 1996 38 10144 https://doi.org/10.1007/BF02514969 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02514969 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nomakuchi Shintaro Department of Biology, College of Liberal Arts, Saga University, 840, Saga, Japan aut NATIONALLICENCE 700 1- Higashi Kazunori Department of Biology, College of Liberal Arts, Saga University, 840, Saga, Japan aut NATIONALLICENCE 773 0- Researches on Population Ecology Springer-Verlag 38/1(1996-06-01), 41-50 0034-5466 38:1<41 1996 38 10144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer