• Publications
  • Influence
Reproductive interference determines persistence and exclusion in species interactions.
1. Reproductive interference is a negative interspecific sexual interaction that adversely affects the fitness of males and females during reproductive process. Theoretical studies suggest thatExpand
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Decreased immune response as a proximate cost of copulation and oviposition in a damselfly
Abstract.Males and females of the Japanese calopterygid damselfly, Matrona basilaris japonica Fester, showed a rapid (within 24 h), and significant reduction in immune system function (encapsulationExpand
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Investment in immune function under chronic and acute immune challenge in an insect
In this paper we investigate the relationship between the chronic burden of mid‐gut parasites (eugregarine trophozooites) and the effect of an acute haemolymph challenge (a nylon insert) on twoExpand
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A selective trade–off for territoriality and non–territoriality in the polymorphic damselfly Mnais costalis
Males of the damselfly Mnais costalis occur as territorial orange–winged 'fighter' males or non–territorial clear–winged 'sneaker' males. Their morph life histories differ considerably but theExpand
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The effect of a seasonal time constraint on development time, body size, condition, and morph determination in the horned beetle Allomyrina dichotoma L. (Coleoptera: Scarabaeidae)
Abstract.  1. In horned beetles selection favours males that adjust their investment in horn development in relation to cues that predict adult body size. Here it is shown that in the Japanese hornedExpand
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The sensitivity of dragonflies to landscape structure differs between life-history groups
Contrasting life-history strategies of long versus short pre-reproductive phases are known in adult dragonflies (Odonata) of temperate regions. Because the long-phase species spend a longer time inExpand
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The genetic polymorphism linked to mate-securing strategies in the male damselfly Mnais costalis Selys (Odonata: Calopterygidae)
  • Y. Tsubaki
  • Biology
  • Population Ecology
  • 4 December 2003
Alternative male mate-securing strategies are widespread among animal taxa, but there are few well-documented examples of genetic polymorphisms for them. In the Japanese calopterygid damselfly MnaisExpand
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Differences in adult and reproductive lifespan in the two male forms ofMnais pruinosa costalis selys (Odonata: Calopterygidae)
The damselflyMnais pruinosa costalis (Odonata: Calopterygidae) is unusual in that males are dimorphic, existing as clear-winged non-territorial ‘sneaks’ and orange-winged territorial ‘fighters’. HereExpand
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Variation in copulation duration in Mnais pruinosa pruinosa Selys (Odonata: Calopterygidae)
SummaryThe Japanese calopterygid damselfly Mnais pruinosa pruinosa shows three distinct copulation durations (Siva-Jothy and Tsubaki 1989). A variety of factors which might influence copulationExpand
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Body temperature and body size affect flight performance in a damselfly
Flight performance is undoubtedly an important factor for behavioral success in flying insects. Though it is well-known that the flight performance is influenced by body temperature and body size,Expand
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