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Animal behaviour v.140, 2018년, pp.29 - 37   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

The adaptive role of a species-specific courtship behaviour in coping with remating suppression of mated females

Minekawa, Kazuyoshi (Laboratory of Applied Entomology, Department of Agricultural and Environmental Biology, The University of Tokyo, Japan ) ; Miyatake, Takahisa (Laboratory of Evolutionary Ecology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan ) ; Ishikawa, Yukio (Laboratory of Applied Entomology, Department of Agricultural and Environmental Biology, The University of Tokyo, Japan ) ; Matsuo, Takashi (Laboratory of Applied Entomology, Department of Agricultural and Environmental Biology, The University of Tokyo, Japan ) ;
  • 초록  

    Three-way interactions consisting of a female and her current and previous mates have been studied intensively in the context of sperm competition involving male manipulation of female remating rate but have rarely been documented in a broader context involving classical premating male display and stimulatory traits such as courtship behaviour. This is surprising because premating traits influence the intensity of postmating competition, which occurs only when a mated female consecutively accepts another male. In Drosophila fruit flies, the subsequent male has an advantage over the previous male in sperm competition. However, the ejaculate of the previous male changes the female's behaviour to refuse remating for several days (remating suppression), reducing the potential advantage of the subsequent male. Under such conditions, the evolution of any means that counteract remating suppression is thought to be adaptive for the subsequent male. Males of the fruit fly Drosophila prolongata perform a unique courtship behaviour called ‘leg vibration’. Although leg vibration increases female receptivity, it is not always required for mating with virgin females, raising a question of why it evolved in the first place. In this study, the role of leg vibration in remating was examined, using leg amputation to manipulate the efficiency of leg vibration and an eye colour mutation to detect remating events. Leg vibration had a profound effect on mated females: the remating rate was extremely low with leg-amputated males, indicating that leg vibration was almost indispensable for remating of recently mated females. Our results demonstrated that single courtship behaviour has different levels of importance or necessity for the first male and the subsequent males, providing an example of the evolution of courtship behaviour that was possibly driven by postmating competition. Highlights We studied competition between mates of the same female in Drosophila prolongata . Sperm competition assay confirmed last male sperm precedence. Recently mated females were less receptive suggesting remating suppression. A species-specific courtship, ‘leg vibration’, counteracted remating suppression. Postcopulatory competition might have driven the evolution of leg vibration.


  • 주제어

    courtship behaviour .   Drosophila prolongata .   postcopulatory competition .   remating suppression .   sperm competition.  

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