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Isolation and identification of attractants from the pupae of three lepidopteran species for the parasitoid Chouioia cunea Yang
Author(s) -
Li Min,
Yang Yixin,
Yao Yonghong,
Xiang Weifang,
Han Jiayi,
Wang Yonghui,
Bai Penghua,
Wang Jing,
Zhu Gengping,
Man Liang,
Zhang Fan,
Pan Lina
Publication year - 2020
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.5724
Subject(s) - hyphantria , antheraea pernyi , lymantria dispar , saturniidae , biology , pupa , host (biology) , lepidoptera genitalia , attraction , hymenoptera , botany , zoology , ecology , larva , biochemistry , gene , linguistics , philosophy
BACKGROUND Chouioia cunea Yang (Hymenoptera: Eulophidae) is a parasitic wasp and natural enemy of several lepidopteran pests during their pupal stage. The volatiles from pupae of three hosts, Hyphantria cunea (Arctiidae), Antheraea pernyi (Saturniidae) and Lymantria dispar (Erebidae), were analyzed and compared to elucidate the chemical cues used by C. cunea to locate its hosts. RESULTS The attraction of C. cunea to H. cunea pupae has no obvious association with the types of plant leaves consumed by H. cunea before pupation. C. cunea exhibited the strongest attraction to the pupae of H. cunea , followed by those of A. pernyi and L. dispar based on behavioral experiments. Gas chromatography‐mass spectrometry and GC‐electroantennography (GC‐EAD) analyses showed that these three host pupae consisted of essentially the same active volatile components but at different relative amounts. Active components derived from these pupae by GC‐EAD were alkanes from C12 to C27, and C. cunea showed different levels of attraction to different single compounds. CONCLUSION Host location by C. cunea primarily depends on common compounds emanating from the pupae of several host species. The relative amount of each component varies across host species, guiding host preferences by C. cunea . Optimal blends of several components were identified. Understanding the chemical cues used by C. cunea to locate its host could increase the possibility of developing attractants for parasitic wasps and subsequently increasing the parasitism rate of C. cunea on various hosts. © 2019 Society of Chemical Industry