Foraging for mates in the hyperparasitic wasp, Dendrocerus carpenteri: impact of unfavourable weather conditions and parasitoid age

Schwörer, Ulrich; Völkl, Wolfgang; Hoffmann, Klaus H.

doi:10.1007/s004420050762

Cited by 25 publications

(16 citation statements)

References 39 publications

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“…Preference for virgin females has also been shown for males of the aphidiid Aphidius nigripes Ashmead (McNeil & Brodeur, ), the pteromalid Lariophagus distinguendus Forster (Ruther et al., ), and the megaspilid Dendrocerus carpenteri (Curtis) (Schworer et al., ). In contrast, M. croceipes females copulated with a male irrespective of whether he was virgin or had already copulated several times.…”

Section: Discussionmentioning

confidence: 89%

Reproductive strategies of the larval parasitoid Microplitis croceipes

Makatiani

Bruce

Schulthess³

et al. 2013

Entomologia Exp Applicata

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Mate choice may have important consequences for offspring sex ratio and fitness of haplodiploid insects. Mate preference of females of the solitary larval parasitoid Microplitis croceipes (Cresson) (Hymenoptera: Braconidae) for virgin and mated males, and vice versa, and the reproductive consequences (i.e., the sex ratio expressed as the proportion of male offspring) were examined in choice and non-choice experiments. In addition, the effect of repeated rapid and daily copulation of an individual male on the sex ratio of offspring of the female mates was assessed. Males preferred virgins over mated females, whereas females copulated with a male irrespective of his mating status. In both the rapid and daily copulation assay, females copulating with a male that had copulated five times or more produced a higher sex ratio than females that had copulated with a virgin male. Females that copulated with virgin males once or twice produced a significantly and considerably lower sex ratio than females that first copulated with a sperm-depleted male followed by a virgin male. This indicates that copulating with a sperm-depleted male has costs and limits acquisition by the female of sperm from virgin males.

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Section: Discussionmentioning

confidence: 89%

Reproductive strategies of the larval parasitoid Microplitis croceipes

Makatiani

Bruce

Schulthess³

et al. 2013

Entomologia Exp Applicata

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“…My results show that if hosts are few in number, D. carpenteri will also parasitise, mark and then repeatedly check all suitable hosts before abandoning a patch. (Scholz & Höller, 1992), females appear to be weak fliers and their dispersal can be restricted by wind or rain (Schwörer et al, 1999). Females may under-exploit patches if their supply of mature eggs is depleted or low.…”

Section: Discussionmentioning

confidence: 99%

Influence of host distribution on foraging behaviour in the hyperparasitoid wasp, Dendrocerus carpenteri

Chow

2000

Entomologia Exp Applicata

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The foraging behaviour of Dendrocerus carpenteri Curtis (Hymenoptera: Megaspilidae), an ectophagous hyperparasitoid of aphidiine wasps inside mummified aphids, was examined in the laboratory with an experimental system consisting of broad bean, Vicia faba L, the pea aphid, Acyrthosiphon pisum Harris, and a primary parasitoid, Ephedrus californicus Baker. Pea aphids parasitised by E. californicus often disperse from their feeding sites (or off host plants) before dying and mummifying. Response of female hyperparasitoids to host distribution was evaluated at two spatial scales. At the first scale, behaviour of hyperparasitoids was examined on individual plants with different densities of hosts. At the second scale, habitat complexity and host location were manipulated in large foraging cages containing several plants. I show that patterns of density-dependent hyperparasitism can result from the foraging behaviour of D. carpenteri. However, dispersal of parasitised aphids may not reduce the incidence of hyperparasitism if hyperparasitoids systematically search the habitat.

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“…Although nothing is known of Dendrocerus mexicali mating behavior, male Dendrocerus carpenteri have been shown to be attracted to sex pheromones released by the females (Schwörer et al 1999). Heavy antennation during courtship has been observed, which implies the possible presence of chemosensilla on the antenna (Liebscher 1972).…”

Section: Discussionmentioning

confidence: 99%

Dendrocerus mexicali (Hymenoptera, Ceraphronoidea, Megaspilidae): Novel antennal morphology, first description of female, and expansion of known range into the U.S.

Burks

István

Deans

2016

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Dendrocerus mexicali has been described by Paul Dessart from a single male specimen collected in Mexico. Using 87 newly identified specimens we expand the known range to include the Southwestern United States and Florida, provide an expanded description of the species, and provide the first record of the female. We also use confocal laser scanning microscopy and in vitro hydrostatic pressure changes to investigate the functional morphology of apparently unique basally flexible antennal branches.

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Foraging for mates in the hyperparasitic wasp, Dendrocerus carpenteri: impact of unfavourable weather conditions and parasitoid age

Cited by 25 publications

References 39 publications

Reproductive strategies of the larval parasitoid Microplitis croceipes

Reproductive strategies of the larval parasitoid Microplitis croceipes

Influence of host distribution on foraging behaviour in the hyperparasitoid wasp, Dendrocerus carpenteri

Dendrocerus mexicali (Hymenoptera, Ceraphronoidea, Megaspilidae): Novel antennal morphology, first description of female, and expansion of known range into the U.S.

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