Evaluation of synthetic oviposition stimulants to enhance egg collection of the oriental fruit fly, Bactrocera dorsalis (Diptera: Tephritidae)

Jayanthi, P. D. Kamala; Kempraj, Vivek; Aurade, Ravindra M.; Bruce, Toby J. A.

doi:10.1007/s10340-017-0845-0

Cited by 14 publications

(25 citation statements)

References 18 publications

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“…Since egg distribution is determined by adult females, searching for suitable oviposition sites plays an important role in oviposition behaviors for gravid females [ 27 ]. In addition, oviposition stimulants could enhance fecundity of the gravid females [ 18 ]. Thus, whether these sexually dimorphic behaviors are associated with the sex-biased expression of chemosensory genes needs to be clarified.…”

Section: Discussionmentioning

confidence: 99%

“…It has been reported that benzothiazole and 1-octen-3-ol serve as oviposition stimulants in B. dorsalis and may attract the gravid females to lay more eggs [ 17 , 18 ]. Therefore, we screened the female-biased chemosensory genes and compared the expression of these genes in the virgin and mated flies.…”

Section: Discussionmentioning

confidence: 99%

“…During the oviposition, the olfactory cues from the external environment are important for female insects to make an appropriate choice for where to lay eggs. Previous studies showed that benzothiazole and 1-octen-3-ol could elicit oviposition behavior in gravid B. dorsalis and they are regarded as oviposition stimulants [ 17 , 18 ]. The identification of oviposition stimulants would provide clues for understanding the co-evolution mechanism of B. dorsalis and their host plants, which could provide better methods for trapping female flies.…”

Section: Introductionmentioning

confidence: 99%

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Comparative transcriptomic analysis reveals female-biased olfactory genes potentially involved in plant volatile-mediated oviposition behavior of Bactrocera dorsalis

Tang

Chen

et al. 2021

BMC Genomics

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Background Olfactory systems take on important tasks to distinguish salient information from a complex olfactory environment, such as locating hosts, mating, aggression, selecting oviposition sites, and avoiding predators. The olfactory system of an adult insect consists of two pairs of main olfactory appendages on the head, the antennae, and the palps, which are covered with sensilla. Benzothiazole and 1-octen-3-ol could elicit oviposition behavior in gravid B. dorsalis are regarded as oviposition stimulants. However, the mechanism for how B. dorsalis percepts benzothiazole and 1-octen-3-ol still remains unknown. Results We conducted a comparative analysis of the antennal transcriptomes in different genders of B. dorsalis using Illumina RNA sequencing (RNA-seq). We identified a total of 1571 differentially expressed genes (DEGs) among the two sexes, including 450 female-biased genes and 1121 male-biased genes. Among these DEGs, we screened out 24 olfaction-related genes and validated them by qRT-PCR. The expression patterns of these genes in different body parts were further determined. In addition, we detected the expression profiles of the screened female-biased chemosensory genes in virgin and mated female flies. Furthermore, the oviposition stimulants-induced expression profilings were used to identify chemosensory genes potentially responsible for benzothiazole and 1-octen-3-ol perception in this fly. Conclusions The results from this study provided fundamental data of chemosensory DEGs in the B. dorsalis antenna. The odorant exposure assays we employed lay a solid foundation for the further research regarding the molecular mechanism of benzothiazole and 1-octen-3-ol mediated oviposition behavior in B. dorsalis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative transcriptomic analysis reveals female-biased olfactory genes potentially involved in plant volatile-mediated oviposition behavior of Bactrocera dorsalis

Tang

Chen

et al. 2021

BMC Genomics

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“…However, being con-generic and being similarly polyphagous, it is possible that B. tryoni and B. dorsalis females rely on similar cues to aid in oviposition site selection and as triggers for oviposition. Recent studies of B. dorsalis have identified several highly effective oviposition stimulants, including γ-octalactone, benzothiazole, ethyl tiglate and 1-octen-3-ol (Jayanthi et al, 2017;Jayanthi et al, 2014Jayanthi et al, , 2014a.…”

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confidence: 99%

γ‐Octalactone, an effective oviposition stimulant of Bactrocera tryoni

Kempraj

Park

Taylor

2019

J Applied Entomology

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Insects commonly rely on olfactory, gustatory and visual cues when deciding where to lay eggs. The olfactory cues that stimulate oviposition in the Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), are not well understood. Here, we show that two known oviposition stimulants of the Oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae)—γ‐octalactone and benzothiazole—strongly elicit aggregation and oviposition in B. tryoni. Two other known oviposition stimulants of B. dorsalis—ethyl tiglate and 1‐octen‐3‐ol—elicit aggregation but not oviposition. Highlighting species overlap, but also differences, in oviposition stimulants, these findings have practical application for mass‐rearing in which vast numbers of flies are reared for sterile insect technique programs and may also have practical application in the development of pest management and monitoring tools.

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“…The switch from a mating-oriented behavior to an oviposition site-seeking behavior is almost immediate in most insects, and the associated molecular switches have also been documented in some tephritids ( Jang, 1995 ; Gillott, 2003 ; Gomulski et al, 2012 ; Córdova-García et al, 2021 ; Devescovi et al, 2021 ) and Drosophila ( McGraw et al, 2008 ). Oviposition in insects is driven by semiochemical cues that elicit a response from the gravid females that triggers the downstream reactions such as when and where to lay eggs (reviewed in Kamala Jayanthi et al, 2014a , b , 2017 , 2021 ; Cury et al, 2019 ), finally resulting in egg-laying. Several factors drive oviposition in insects: availability of food ( Stahlschmidt et al, 2014 ), assessment of threat from conspecifics ( Shelly, 1999 ; Ekesi et al, 2009 ), natural predators ( Van Mele et al, 2009 ), and most importantly, ovipositional stimulation and cues from the host ( Freeman and Carey, 1990 ; Kamala Jayanthi et al, 2012 , 2014a , b ).…”

Section: Introductionmentioning

confidence: 99%

Is the Natural Instinct to Oviposit in Mated Female Oriental Fruit Fly, Bactrocera dorsalis More of a Brain-Independent Act?

2022

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What physiological and neuro-molecular changes control the female oviposition behavior post-mating in insects? The molecular changes that occur in a gravid female insect are difficult to dissect out considering the distinct behavioral patterns displayed by different insect groups. To understand the role of the brain center in Oriental fruit fly, Bactrocera dorsalis oviposition, egg-laying behavior was analyzed in γ-octalactone exposed, decapitated mated B. dorsalis females. Interestingly, the females displayed a possible urge to oviposit, which suggests a natural instinct to pass on the gene pool. Expression analysis of certain genes involved in oviposition behavior was also carried out in these insects to explore the molecular aspects of such behavior. This study tries to assess the involvement of brain center in egg-laying and also explore the role of certain neurotransmitter-related receptors in decapitated B. dorsalis oviposition behavior. Our results indicate that B. dorsalis oviposition behavior could potentially have a bypass route of neuronal control devoid of the brain. The study reported here establishes that decapitation in gravid females fails to abolish their ability to sense ovipositional cues and also to oviposit.

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Evaluation of synthetic oviposition stimulants to enhance egg collection of the oriental fruit fly, Bactrocera dorsalis (Diptera: Tephritidae)

Cited by 14 publications

References 18 publications

Comparative transcriptomic analysis reveals female-biased olfactory genes potentially involved in plant volatile-mediated oviposition behavior of Bactrocera dorsalis

Comparative transcriptomic analysis reveals female-biased olfactory genes potentially involved in plant volatile-mediated oviposition behavior of Bactrocera dorsalis

γ‐Octalactone, an effective oviposition stimulant of Bactrocera tryoni

Is the Natural Instinct to Oviposit in Mated Female Oriental Fruit Fly, Bactrocera dorsalis More of a Brain-Independent Act?

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