Effects of Mating on Female Locomotor Activity in the Parasitoid Wasp<i>Nasonia vitripennis</i>(Hymenoptera: Pteromalidae)

King, B. H.; Grimm, Kourtney; Reno, Hilary

doi:10.1603/0046-225x-29.5.927

Cited by 22 publications

(24 citation statements)

References 28 publications

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“…2d) and (b) show a dramatically increased tendency to disperse from the patch compared to virgin Nv females (Fig. 5) corroborating previous studies that demonstrated a mating-induced increase of flight and general locomotor activity in Nv females [28], [29]. Hence, despite the general motivation of mismated Nv females to re-mate with a conspecific male, their re-mating rate in nature might be much lower than in our lab experiments, in which encounters with conspecific males were enforced by the experimental design.…”

Section: Discussionsupporting

confidence: 89%

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Pheromone Diversification and Age-Dependent Behavioural Plasticity Decrease Interspecific Mating Costs in Nasonia

et al. 2014

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Interspecific mating can cause severe fitness costs due to the fact that hybrids are often non-viable or less fit. Thus, theory predicts the selection of traits that lessen reproductive interactions between closely related sympatric species. Males of the parasitic wasp Nasonia vitripennis differ from all other Nasonia species by an additional sex pheromone component, but the ecological selective forces underlying this pheromone diversification are unknown. Here we present data from lab experiments suggesting that costly interspecific sexual interactions with the sympatric species N. giraulti might have been responsible for the pheromone evolution and some courtship-related behavioural adaptations in N. vitripennis. Most N. giraulti females are inseminated already within the host, but N. giraulti males still invest in costly sex pheromones after emergence. Furthermore, they do not discriminate between N. vitripennis females and conspecifics during courtship. Therefore, N. vitripennis females, most of which emerge as virgins, face the risk of mating with N. giraulti resulting in costly all-male broods due to Wolbachia-induced cytoplasmic incompatibility. As a counter adaptation, young N. vitripennis females discriminate against N. giraulti males using the more complex conspecific sex pheromone and reject most of them during courtship. With increasing age, however, N. vitripennis females become less choosy, but often compensate mating errors by re-mating with a conspecific. By doing so, they can principally avoid suboptimal offspring sex ratios, but a microcosm experiment suggests that under more natural conditions N. vitripennis females cannot completely avoid fitness costs due to heterospecific mating. Our study provides support for the hypothesis that communication interference of closely related sympatric species using similar sexual signals can generate selective pressures that lead to their divergence.

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Section: Discussionsupporting

confidence: 89%

“…Previous studies have demonstrated that Nv females exhibit an increased flight and general locomotor activity after mating [28], [29]. We therefore expected faster dispersion in mated females.…”

Section: Methodsmentioning

confidence: 77%

Pheromone Diversification and Age-Dependent Behavioural Plasticity Decrease Interspecific Mating Costs in Nasonia

et al. 2014

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“…The short distance covered by running can be explained by the high proportion of time spent stationary and the numerous flights (interrupted activity). The proportion of time spent stationary is similar to that recorded by King et al (2000) and King (2007) for mated females. (2) D. microgastri: This species covers a great distance by running and rarely flies when searching for orientation cues of low specificity or even for directly detectable hosts.…”

Section: Discussionsupporting

confidence: 80%

Two ways of finding a host: A specialist and a generalist parasitoid species (Hymenoptera: Chalcidoidea: Pteromalidae)

Peters¹

2011

Eur. J. Entomol.

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Abstract. Two closely related parasitoid wasp species with different host specificities were used for experimental studies on the biology of host finding, a crucial element of parasitoid life history: The habitat and host specialist Nasonia vitripennis and the habitat and host generalist Dibrachys microgastri (Chalcidoidea: Pteromalidae). The host finding parameters tested included reaction to olfactory cues, aspects of locomotor activity, ability to locate hidden hosts and day-night-activity. The results revealed distinct interspecific differences that match the respective host and habitat ranges of the two species. In N. vitripennis host finding is dominated by olfactory reaction to hosts and host habitat, i.e., fly puparia and birds' nests. In D. microgastri olfactory cues have only a minor role. Its host finding is characterized by rapid searching at random. Both species are able to locate hidden hosts. Although still incomplete, these insights into host finding by two parasitoid species with different life history strategies indicate they can be characterized by specific combinations of behavioural host finding features.

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“…Although males had not evolved to be more or less likely to court a female, we did find that males initiated courtship later when the female was already mated: whether this is a result of male or female behaviour is unknown. Mated females may do less to facilitate courtship by changing their behaviour (King et al 2000), or perhaps they can signal their mated status if mating induces a change in female cuticular hydrocarbons. In the wild it would be adaptive for males to discriminate against mated females, perhaps by sensing the presence of malespecific cuticular hydrocarbons or pheromone traces from the previous male.…”

Section: Discussionmentioning

confidence: 99%

Laboratory evolution of polyandry in the parasitoid wasp Nasonia vitripennis

et al. 2007

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Effects of Mating on Female Locomotor Activity in the Parasitoid WaspNasonia vitripennis(Hymenoptera: Pteromalidae)

Cited by 22 publications

References 28 publications

Pheromone Diversification and Age-Dependent Behavioural Plasticity Decrease Interspecific Mating Costs in Nasonia

Pheromone Diversification and Age-Dependent Behavioural Plasticity Decrease Interspecific Mating Costs in Nasonia

Two ways of finding a host: A specialist and a generalist parasitoid species (Hymenoptera: Chalcidoidea: Pteromalidae)

Laboratory evolution of polyandry in the parasitoid wasp Nasonia vitripennis

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