Chemical Ecology of Tachinid Parasitoids

Nakamura, Satoshi; Ichiki, Ryoko T.; Kainoh, Yooichi

doi:10.1002/9781118409589.ch7

Cited by 4 publications

(4 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19,20 Chemical evidence for induction of plants to attract herbivores' natural enemies, studied mainly in hymenopterans, shows that herbivore-induced plant volatiles (HIPVs) can attract parasitoids. 21 Herbivore-induced plant volatiles were found to be crucial host location cues also for the tachinids E larvarum and E japonica, 5,22,23 as explained below. Tachinids displaying direct strategies to attack pentatomids may use bug aggregation pheromones as chemical signals for host location.…”

Section: Direct Strategiesmentioning

confidence: 96%

“…But it is known that host selection by tachinids relies on chemical and physical cues. 5 Depending on species, tachinids may adopt indirect, direct, or, rarely, mixed oviposition strategies. For example, ormiine tachinids may oviposit on their hosts (direct strategy) or near them (indirect).…”

Section: Oviposition Strategies Of Tachinid Parasitoidsmentioning

confidence: 99%

“…The role of HIPVs in the location of habitats and hosts was studied intensively in E japonica and to a lesser extent in E larvarum . 5,22,23 Wind tunnel experiments showed that maize plant volatiles induced by host infestation were important cues in attracting females of E japonica . 22,23,44 The duration of attraction of E japonica to herbivore-damaged plants after the initial release of HIPVs was also studied in a wind tunnel: females continued to detect HIPVs for 24 hours after removal of larvae of the host M separata .…”

Section: Two Exorista Species As Case Studies Of Direct Oviposition Smentioning

confidence: 99%

“…2,3 Yet, this family of Dipterans, with about 8500 species described worldwide, 4 is the largest and most important group of non-hymenopteran parasitoids. 2,5–7 Tachinids are oviparous or ovoviviparous endoparasitoids of a variety of insects, mostly phytophagous, about 70% of which are larval Lepidoptera. 8 The host range of these parasitoid flies also comprises other taxa, including the Heteroptera (nymphs and adults) and Coleoptera (larvae and adults).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Oviposition Strategies of Tachinid Parasitoids: Two Exorista Species as Case Studies

Dindo

Nakamura

2018

Int J�Insect�Sci

Self Cite

View full text Add to dashboard Cite

Oviposition strategies and mechanisms of host selection in parasitoids may be crucial for the success of parasitization and parasitoid production. These aspects are far less known in tachinid parasitoids than in hymenopteran parasitoids. Depending on the species, parasitoid flies may adopt direct or indirect oviposition strategies. The ‘direct type’ females lay eggs on or, in relatively a few species, inside the host body. This review describes cues involved in host selection by tachinid parasitoids and their oviposition strategies and presents 2 case studies in more detail, focusing on Exorista larvarum and Exorista japonica. These 2 polyphagous parasitoids of Lepidoptera lay macrotype eggs directly on the host cuticle. Both species have been used as biological control agents in inoculative release against the gypsy moth Lymantria dispar in the Northern United States. Improved knowledge of the mechanisms involved in host selection and oviposition strategies may increase the possibility of eliciting oviposition by these tachinids on target lepidopterous hosts (and even artificial substrates), thus facilitating their rearing and ultimately making their exploitation as regulators of target insect pests more feasible and efficient.

show abstract

Section: Direct Strategiesmentioning

confidence: 96%

Section: Oviposition Strategies Of Tachinid Parasitoidsmentioning

confidence: 99%

Section: Two Exorista Species As Case Studies Of Direct Oviposition Smentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Oviposition Strategies of Tachinid Parasitoids: Two Exorista Species as Case Studies

Dindo

Nakamura

2018

Int J�Insect�Sci

Self Cite

View full text Add to dashboard Cite

show abstract

Determination of suitable reference genes for RT-qPCR normalisation in Bombyx mori (Lepidoptera: Bombycidae) infected by the parasitoid Exorista sorbillans (Diptera, Tachinidae)

Liu,

Gu,

et al. 2023

Bull. Entomol. Res.

View full text Add to dashboard Cite

The silkworm Bombyx mori (Lepidoptera: Bombycidae) is a lepidopteran model insect of great economic importance. The parasitoid Exorista sorbillans (Diptera, Tachinidae) is the major pest of B. mori and also a promising candidate for biological control. However, the molecular interactions between hosts and dipteran parasitoids have only partially been studied. Gene expression analysis by reverse-transcription quantitative real-time polymerase chain reaction (RT-qPCR) is indispensable to characterise their interactions. Accurate normalisation of RT-qPCR-based gene expression requires the use of reference genes that are constantly expressed irrespective of experimental conditions. In this study, the expression stability of 13 traditionally used reference genes was estimated by five statistical algorithms (ΔCt, geNorm, Normfinder, BestKeeper, and RefFinder) to determine the best reference genes for gene expression studies in different tissues of B. mori under E. sorbillans parasitism. Specifically, TATA-box-binding protein was the best reference gene in epidermis and testis, while elongation factor 1α was the most stable gene in prothoracic gland and midgut. Elongation factor 1γ, ribosomal protein L3, actin A1, ribosomal protein L40, glyceraldehyde-3-phosphate dehydrogenase and eukaryotic translation initiation factor 4A were the most suitable genes in head, silk gland, fat body, haemolymph, Malpighian tubule and ovary, respectively. Our study offers a set of suitable reference genes for gene expression normalisation in B. mori under the parasitic stress of E. sorbillans, which will benefit the in-depth exploration of host-dipteran parasitoid interactions, and also provide insights for further improvements of B. mori resistance against parasitoids and biocontrol efficacy of dipteran parasitoids.

show abstract

Life history parameters of the microtype parasitoid flyPales pavida(Diptera: Tachinidae), and effects of host age and number of eggs ingested by host on parasitism success

Nakamura

2018

Biocontrol Science and Technology

View full text Add to dashboard Cite

Chemical Ecology of Tachinid Parasitoids

Cited by 4 publications

References 69 publications

Oviposition Strategies of Tachinid Parasitoids: Two Exorista Species as Case Studies

Oviposition Strategies of Tachinid Parasitoids: Two Exorista Species as Case Studies

Determination of suitable reference genes for RT-qPCR normalisation in Bombyx mori (Lepidoptera: Bombycidae) infected by the parasitoid Exorista sorbillans (Diptera, Tachinidae)

Life history parameters of the microtype parasitoid flyPales pavida(Diptera: Tachinidae), and effects of host age and number of eggs ingested by host on parasitism success

Contact Info

Product

Resources

About