Parasitic wasp females are attracted to blends of host-induced plant volatiles: do qualitative and quantitative differences in the blend matter? [v2; ref status: indexed, http://f1000r.es/12h]

F1000Research

Rika Ozawa¹  Junji Takabayashi¹  Masayoshi Uefune¹  Soichi Kugimiya² 

[1] Center for Ecological Research, Kyoto University, Otsu, Shiga, 520-2113, Japan;National Institute for Agro-Environmental Science (NIAES), Tsukuba, Ibaraki, 305-8604, Japan;

关键词: Behavioral Ecology;    Behavioral Neuroscience;    Ecosystem Ecology;    Plant-Environment Interactions;    Sensory Systems;   

DOI  :  10.12688/f1000research.2-57.v2

来源: DOAJ

【 摘 要 】

Naïve Cotesia vestalis wasps, parasitoids of diamondback moth (DBM) larvae, are attracted to a synthetic blend (Blend A) of host-induced plant volatiles composed of sabinene, n-heptanal, α-pinene, and (Z)-3-hexenyl acetate, in a ratio of 1.8:1.3:2.0:3.0. We studied whether qualitative (adding (R)-limonene: Blend B) or quantitative changes (changing ratios: Blend C) to Blend A affected the olfactory response of C. vestalis in the background of intact komatsuna plant volatiles. Naïve wasps showed equal preference to Blends A and B and Blends A and C in two-choice tests. Wasps with oviposition experience in the presence of Blend B preferred Blend B over Blend A, while wasps that had oviposited without a volatile blend showed no preference between the two. Likewise, wasps that had starvation experience in the presence of Blend B preferred Blend A over Blend B, while wasps that had starved without a volatile blend showed no preference between the two. Wasps that had oviposition experience either with or without Blend A showed equal preferences between Blends C and A. However, wasps that had starvation experience in the presence of Blend A preferred Blend C over Blend A, while those that starved without a volatile blend showed equal preferences between the two. By manipulating quality and quantity of the synthetic attractants, we showed to what extent C. vestalis could discriminate/learn slight differences between blends that were all, in principle, attractive.

【 授权许可】

Unknown