Disentangling the effect of insemination and ovary development on the cuticular hydrocarbon profile in the bumblebee Bombus terrestris (Hymenoptera: Apidae)

Jansen, Jan; Pokorny, Tamara; Schmitt, Thomas

doi:10.1007/s13592-015-0379-5

Cited by 7 publications

(7 citation statements)

References 46 publications

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“…For the remaining samples (total n = 31, dominants n = 7, subordinates = 8, isolated guards = 7, natural guards = 9), we used random forest analysis (number of trees = 10,000) to determine if the four sampled behaviors could be classified based on their CHCs and to identify compounds that might contribute to any identified differences (Jansen et al 2016;Oliveira et al 2016;Bruckner and Heethoff 2017). For visualization, we constructed a multidimensional scaling plot based on the proximity matrix from the random forest analysis (Monin et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Experimental disruption of social structure reveals totipotency in the orchid bee, Euglossa dilemma

2022

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Eusociality has evolved multiple times across the insect phylogeny. Social insects with greater levels of social complexity tend to exhibit specialized castes with low levels of individual phenotypic plasticity. In contrast, species with simple social groups may consist of totipotent individuals that transition among behavioral and reproductive states. However, recent work has shown that in simple social groups, there can still be constraint on individual plasticity, caused by differences in maternal nourishment or social interaction. It is not well understood how these constraints arise, ultimately leading to the evolution of nonreproductive workers. Some species of orchid bees form social groups of a dominant and-one to two subordinate helpers where all individuals are reproductive. Females can also disperse to start their own nest as a solitary foundress, which includes a nonreproductive phase characterized by ovary inactivation, not typically expressed by subordinates. Little is known about individual flexibility across these trajectories. Here, using the orchid bee Euglossa dilemma, we assess the plasticity of subordinate helpers, finding that they are capable of the same behavioral, physiological, transcriptomic, and chemical changes seen in foundresses. Our results suggest that the lack of nonreproductive workers in E. dilemma is not due to a lack of subordinate plasticity.

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Section: Discussionmentioning

confidence: 99%

Experimental disruption of social structure reveals totipotency in the orchid bee, Euglossa dilemma

2022

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“…However, literature survey did not support the hypothesis that only short-chain alkanes and methyl-branched alkanes are generally responsible for virgin female attractiveness in Apoidea (Table 2). In a megachilid bee, an andrenid bee, a colletid bee and a bumblebee, either short-or long-chain alkenes are much more abundant in virgin than in mated females (Paulmier et al, 1999;Schiestl and Ayasse, 2000;Simmons et al, 2003;Mant and Brändli, 2005;Jansen et al, 2015) suggesting that alkene-rich profile are responsible in eliciting male copulation in these species (Table 2). However, alkenes were unlikely to play an important role in S. continuus female attractiveness, since they are not very abundant on the female cuticle.…”

Section: Discussionmentioning

confidence: 99%

“…In S. continuus the disappearance of the female attractiveness seems to be related with a further, though smaller, CHC shift from young to old mated females. Age-dependent changes in CHC profiles are not surprising per se since they normally occur due to physiological ageing processes (metabolism and gland development) and ovarian development (Jansen et al, 2015). For future studies, it would be interesting to examine if the CHC profile of S. continuus virgin females also shift with age independently of mating, as it was observed in few bees (Megachile rotundata Fabricius, Paulmier et al (1999); Lasioglossum zephyrum (Smith), Barrows (1975); Apis mellifera L., Babis et al (2014)) and few ants (Linepithema humile Mayr, de Biseau et al (2004); Ectatomma tuberculatum (Olivier), Hora et al (2008)).…”

Section: Discussionmentioning

confidence: 99%

Post-mating shift towards longer-chain cuticular hydrocarbons drastically reduces female attractiveness to males in a digger wasp

Polidori

Giordani

Wurdack

et al. 2017

Journal of Insect Physiology

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Females of most aculeate Hymenoptera mate only once and males are therefore under a strong competitive pressure which is expected to favour the evolution of rapid detection of virgin females. In several bee species, the cuticular hydrocarbon (CHC) profile exhibited by virgin females elicits male copulation attempts. However, it is still unknown how widespread this type of sexual communication is within Aculeata. Here, we investigated the use of CHCs as mating cues in the digger wasp Stizus continuus, which belongs to the family (Crabronidae) from within bees arose. In field experiments, unmanipulated, recently emerged virgin female dummies promptly elicit male copulation attempts, whereas 1-4days old mated females dummies were still attractive but to a much lesser extent. In contrast, old (10-15days) mated female dummies did not attract males at all. After hexane-washing, attractiveness almost disappeared but could be achieved by adding CHC extracts from virgin females even on hexane-washed old mated females. Thus, the chemical base of recognition of females as appropriate mating partner by males is coded in their CHC profile. Accordingly, differences in CHC profiles can be detected between sexes, with males having larger amounts of alkenes and exclusive long-chain alkanes, and within females specially according to their mating status. Shortly after mating, almost all of the major hydrocarbons found on the cuticle of females undergo significant changes in their abundance, with a clear shift from short-chain to long-chain linear and methyl-branched alkanes. The timely detection of virgin females by males in S. continuus could be advantageous within the narrow period of female emergence, when male-male competition is strongest.

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“…In the next step, we ran a random Forest model in MetaboAnalyst 5.0 ( https://www.metaboanalyst.ca/ ) to determine which decisive compounds are most important for the separation of the groups [ 51 ]. First, we compared all VOCs between O 3 and control treatments.…”

Section: Methodsmentioning

confidence: 99%

Elevated ozone and carbon dioxide affects the composition of volatile organic compounds emitted by Vicia faba (L.) and visitation by European orchard bee (Osmia cornuta)

et al. 2023

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Recent studies link increased ozone (O3) and carbon dioxide (CO2) levels to alteration of plant performance and plant-herbivore interactions, but their interactive effects on plant-pollinator interactions are little understood. Extra floral nectaries (EFNs) are essential organs used by some plants for stimulating defense against herbivory and for the attraction of insect pollinators, e.g., bees. The factors driving the interactions between bees and plants regarding the visitation of bees to EFNs are poorly understood, especially in the face of global change driven by greenhouse gases. Here, we experimentally tested whether elevated levels of O3 and CO2 individually and interactively alter the emission of Volatile Organic Compound (VOC) profiles in the field bean plant (Vicia faba, L., Fabaceae), EFN nectar production and EFN visitation by the European orchard bee (Osmia cornuta, Latreille, Megachilidae). Our results showed that O3 alone had significant negative effects on the blends of VOCs emitted while the treatment with elevated CO2 alone did not differ from the control. Furthermore, as with O3 alone, the mixture of O3 and CO2 also had a significant difference in the VOCs’ profile. O3 exposure was also linked to reduced nectar volume and had a negative impact on EFN visitation by bees. Increased CO2 level, on the other hand, had a positive impact on bee visits. Our results add to the knowledge of the interactive effects of O3 and CO2 on plant volatiles emitted by Vicia faba and bee responses. As greenhouse gas levels continue to rise globally, it is important to take these findings into consideration to better prepare for changes in plant-insect interactions.

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Disentangling the effect of insemination and ovary development on the cuticular hydrocarbon profile in the bumblebee Bombus terrestris (Hymenoptera: Apidae)

Cited by 7 publications

References 46 publications

Experimental disruption of social structure reveals totipotency in the orchid bee, Euglossa dilemma

Experimental disruption of social structure reveals totipotency in the orchid bee, Euglossa dilemma

Post-mating shift towards longer-chain cuticular hydrocarbons drastically reduces female attractiveness to males in a digger wasp

Elevated ozone and carbon dioxide affects the composition of volatile organic compounds emitted by Vicia faba (L.) and visitation by European orchard bee (Osmia cornuta)

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