| Title: | Is It Possible to Manipulate Scelionidae Wasps' Preference to a Target Host? |
| Author(s): | Tognon R; Sant'Ana J; Redaelli LR; Meyer AL; |
| Address: | "Dept of Crop Protection, PPG-Fitotecnia, Federal Univ of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brasil. roberta.tognon@ufrgs.br. Ethology and Insect Chemical Ecology Lab, Federal Univ of Rio Grande do Sul, Av. Bento Goncalves, 7712, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil. roberta.tognon@ufrgs.br. Dept of Crop Protection, PPG-Fitotecnia, Federal Univ of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brasil. Ethology and Insect Chemical Ecology Lab, Federal Univ of Rio Grande do Sul, Av. Bento Goncalves, 7712, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil" |
| DOI: | 10.1007/s13744-018-0607-6 |
| ISSN/ISBN: | 1678-8052 (Electronic) 1519-566X (Linking) |
| Abstract: | "Parasitoid host selection is mainly mediated by chemical cues, which can be adjusted by experience, changing their innate behavior. Therefore, this study evaluated if immature experience (pre-imaginal conditioning) on eggs and volatiles from different host eggs has influence on parasitism and chemotaxic behavior of Telenomus podisi Ashmead and/or Trissolcus basalis Wollaston (Hymenoptera: Scelionidae). Both wasp species were submitted to a multiple-choice parasitism test among Euschistus heros (Fabricius), Piezodorus guildinii (Westwood), and Nezara viridula L. (Hemiptera: Pentatomidae) (Hemiptera: Pentatomidae) egg masses. Eggs from these three stink bugs were equally offered to female parasitoids. After that, adults which emerged from each host were also exposed to parasitism in a multiple-choice test for up to an additional generation. Moreover, in olfactometer 'Y,' the behavior of innate and experienced T. podisi females to volatiles from hosts' egg extracts was tested, to study their learning and memory ability. The original host had influence on T. podisi parasitism; however, T. basalis always parasitized more N. viridula eggs independently of its last rearing host. Innate T. podisi females responded positively to E. heros and P. guildinii egg volatiles, but this behavior was not observed in N. viridula. When T. podisi females were experienced on egg volatiles from a new host, they showed significant learning and memory ability for the specific host volatile for, at least, 24 h. Experienced wasps responded positively to N. viridula and through this result we have evidences about the possibility to manipulate wasp's preferences to a specific target host" |
| Keywords: | "Animals Female Heteroptera/*parasitology *Host Specificity *Host-Parasite Interactions Learning Olfactometry Ovum/chemistry/parasitology Volatile Organic Compounds/chemistry Wasps/*physiology Telenomus podisi, Trissolcus basalis, Pentatomidae, Scelionidae;" |
| Notes: | "MedlineTognon, R Sant'Ana, J Redaelli, L R Meyer, A L eng Netherlands 2018/04/22 Neotrop Entomol. 2018 Oct; 47(5):689-697. doi: 10.1007/s13744-018-0607-6. Epub 2018 Apr 20" |
