Characterization of Male-Produced Aggregation Pheromone of the Bean Flower Thrips Megalurothrips sjostedti (Thysanoptera: Thripidae)

Niassy, Saliou; Tamiru, Amanuel; Hamilton, James G. C.; Kirk, William D. J.; Mumm, Roland; Sims, Cassie; Kogel, W.J. de; Ekesi, Sunday; Maniania, Nguya K.; Bandi, Krishnakumari; Mitchell, Fraser; Subramanian, Sevgan

doi:10.1007/s10886-019-01054-8

Cited by 23 publications

(31 citation statements)

References 25 publications

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“…Characterization of the headspace volatiles of M. usitatus revealed one component present only in male odors, and identified as (2 E ,6 E )‐farnesyl acetate. The compound was unique and structurally different from the active components of the aggregation pheromones of thrips identified so far, including another species M. sjostedti from the same genus recently reported . In thrips, aggregation pheromones have now been identified from four species including F. occidentalis , F. intonsa , T. palmi and M. sjostedti in three different genera .…”

Section: Discussionmentioning

confidence: 64%

The male‐produced aggregation pheromone of the bean flower thrips Megalurothrips usitatus in China: identification and attraction of conspecifics in the laboratory and field

Qin

Feng

et al. 2020

Pest Management Science

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BACKGROUNDThrips, Megalurothrips usitatus, usually display aggregation behavior, which is probably mediated by a male‐produced aggregation pheromone. Aggregation pheromones are species‐specific, and can be used to develop commercial lures for monitoring and mass‐trapping of pests. The active components of the aggregation pheromone for four thrips species have been identified. However, the components of M. usitatus‐produced aggregation pheromone are still not clear.RESULTY‐tube olfactometer assays showed that both male and virgin female M. usitatus were significantly attracted to male but not female volatiles. This was additionally supported by electroantennogram (EAG) assays. Coupled gas chromatography‐electroantennogram detection (GC‐EAD) showed that one component of male‐specific odors elicited a significant electrophysiological response. This compound was characterized as (2E,6E)‐farnesyl acetate, which is structurally different from the active components of the aggregation pheromones of other reported thrips species. Electroantennal responses of M. usitatus increased with increasing doses of synthetic (2E,6E)‐farnesyl acetate. Additionally, this compound significantly attracted adults in laboratory behavioral bioassays. Under field conditions, sticky traps with synthetic (2E,6E)‐farnesyl acetate caught 1.5‐7‐fold more M. usitatus than controls, and this effect of the compound at a dose of 60 μg lasted at least 6 days.CONCLUSION(2E,6E)‐Farnesyl acetate was identified as the male‐produced aggregation pheromone of M. usitatus. It could attract this thrips species under laboratory and field conditions, suggesting considerable potential as a commercial application to control M. usitatus populations. © 2020 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 64%

The male‐produced aggregation pheromone of the bean flower thrips Megalurothrips usitatus in China: identification and attraction of conspecifics in the laboratory and field

Qin

Feng

et al. 2020

Pest Management Science

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“…The males form aggregations on the leaves, while the females spend most of their time in the flowers 9 . Although two components of a male-produced aggregation pheromone, which attracts both males and females, have been identified and investigated with olfactometer experiments 27 , there have been no close-range studies of the mating behaviour. Our pilot observations indicated that there were some distinct and unexpected differences from the behaviour we observed in F. occidentalis 20 , 28 .…”

Section: Introductionmentioning

confidence: 99%

Mating behaviour, mate choice and female resistance in the bean flower thrips (Megalurothrips sjostedti)

Akinyemi

Subramanian

Mfuti

et al. 2021

Sci Rep

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Many species of thrips (Thysanoptera) in the family Thripidae form mating aggregations, but the adaptive significance of these aggregations and the extent of male and female mate choice is poorly understood. We studied the mating behaviour of the bean flower thrips Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae), which forms male aggregations and occurs across sub-Saharan Africa. We tested whether males choose mates by female age or mating status. No-choice mating bioassays with one male and one female were used to simulate the way males usually encounter only one female at a time in aggregations in the field. Virgin females violently resisted mating attempts by males, but we found no compelling evidence to establish whether this was indiscriminate or was screening suitable males. Younger males (1–2 days old) did not discriminate females by age (1–2 or 7–10 days old), but older males (7–10 days old) avoided mating with older females. Any male choice by female mating status (virgin or mated) was weak or absent. The mating behaviour of M. sjostedti shows broad similarities with that of other thrips species that form aggregations, but also shows some distinct and novel differences, which can help our understanding of the adaptive significance of aggregations.

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“…The difference between fighting in the two lineages is likely due to the variation in type and quantity of male-produced pheromones. Males interact over extended periods, so a pheromone may be involved as were found with males of sandfly, F. occidentalis, F. intonsa, M. sjostedti (Trybom) and T. palmi (Karny) (Akella et al, 2014;Hamilton et al, 2005;Jones and Hamilton, 1998;Kirk, 2017;Niassy et al, 2019;Zhang et al, 2011). It has been reported that a male F. occidentalis produces pheromone during aggregation.…”

Section: Tablementioning

confidence: 93%

Fighting Behaviour of Male Onion Thrips, Thrips tabaci (Thysanoptera: Thripidae) Lineages

Woldemelak

2020

Acta Phytopathologica et Entomologica Hungarica

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Onion thrips, Thrips tabaci Lindeman, 1889 (Thysanoptera: Thripidae) has three distinctive reproductive modes: arrhenotokous, thelytokous and deuterotokous. This experiment was focused on the arrhenotokous leek-(L1) and tobacco-associated (T) T. tabaci lineages. These two lineages are distinctively varied genetically and in host adaptations. L1 and T lineages perform better on leek and tobacco plants, respectively. Fighting occurs between males when they compete for food, mating, and oviposition sites. The aim of this research was to examine the fighting behaviour and characterize the fighting elements of males in L1 and T lineages. The experiment was performed in the laboratory by using a Euromex VC.3036 video camera and each experiment was recorded for a duration of 10 minutes. Transparent PCR tube caps formed the arena to observe the fighting interactions in both lineages. A total of 40 video recordings have been observed and each recording had a different arena. The fighting performance was observed at 2, 5, 8, 10, 12 days old specimens in four replications. This result has shown L1 lineage had better fighting performance and a more aggressive fighting ability than T lineage. Antennal bouts, jumping, flipping, stabbing and pitching are the most commonly observed fighting elements.

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Characterization of Male-Produced Aggregation Pheromone of the Bean Flower Thrips Megalurothrips sjostedti (Thysanoptera: Thripidae)

Cited by 23 publications

References 25 publications

The male‐produced aggregation pheromone of the bean flower thrips Megalurothrips usitatus in China: identification and attraction of conspecifics in the laboratory and field

The male‐produced aggregation pheromone of the bean flower thrips Megalurothrips usitatus in China: identification and attraction of conspecifics in the laboratory and field

Mating behaviour, mate choice and female resistance in the bean flower thrips (Megalurothrips sjostedti)

Fighting Behaviour of Male Onion Thrips, Thrips tabaci (Thysanoptera: Thripidae) Lineages

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