Collection and Laboratory Culture of Ormia ochracea (Diptera: Tachinidae)

Vincent, Crystal M.; Bertram, Susan M.

doi:10.18474/0749-8004-45.1.1

Cited by 15 publications

(14 citation statements)

References 25 publications

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“…To obtain the larvae, we killed a fly, dissected its abdomen and removed live planidia larvae for infestation. We deposited the larvae on the membranous area between head and thorax (Vincent & Bertram 2009) using a probe (for details of infestations see Beckers & Wagner 2011b). The remaining females were mock-infested (i.e.…”

Section: Methodsmentioning

confidence: 99%

Parasitoid infestation changes female mating preferences

Beckers

Wagner

2013

Animal Behaviour

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Females often adjust their mating preference to environmental and social conditions. This plasticity of preference can be adaptive for females and can have important consequences for the evolution of male traits. While predation and parasitism are widespread, their effects on female preferences have rarely been investigated. Females of the cricket Gryllus lineaticeps are parasitized by the parasitoid fly Ormia ochracea. Infestation with fly larvae substantially reduces female life span and thus reproductive opportunities of the cricket. Both female G. lineaticeps and flies orient to male song and both prefer male songs with faster chirp rates to songs with slower chirp rates. We tested the effect of parasitic infestation on female responsiveness to male song and female chirp rate preferences. The proportion of individuals responding to male songs did not differ between infested and control females. Control females preferred intermediate chirp rates to slow chirp rates and did not discriminate between fast and intermediate chirp rates. In contrast, infested females showed no preferences in the choice trials, indicating reduced chirp rate selectivity. This plasticity in female preferences may be adaptive; parasitized females may have a higher probability of reproducing before they are killed by the parasitoids if they are less selective (i.e. there will be a larger pool of males considered acceptable). The change in preferences suggests relaxed selection on male chirp rate during times of parasitism.

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Section: Methodsmentioning

confidence: 99%

Parasitoid infestation changes female mating preferences

Beckers

Wagner

2013

Animal Behaviour

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“…Flies were housed individually in plastic containers (13 3 17 3 8 cm) and supplied every second day with apple sauce (Best Choice TM ) and cotton (Padco TM ) soaked in saturated sugar solution. Larvae were obtained by killing the adult female fly by removing its head and then dissecting its abdomen (for detailed description see Vincent and Bertram, 2009b). We sacrificed one fly per experimental day and transferred a portion of its larvae onto a single 'wet' filter paper (Whatman International Ltd. TM ) and a portion onto a single 'dry' filter paper.…”

Section: Methodsmentioning

confidence: 99%

Survival Rates of Planidial Larvae of the Parasitoid Fly Ormia ochracea (Diptera: Tachinidae)

Beckers¹,

Martin²,

Wagner³

2011

Journal of the Kansas Entomological Society

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“…We killed each fly by removing its head and then dissected its abdomen to obtain planidial larvae for the infestation of the male crickets (for a detailed description see Vincent & Bertram 2009). On the day of infestation, we weighed the crickets and used a probe to transfer larvae to the crickets.…”

Section: Infestationsmentioning

confidence: 99%

“…On the day of infestation, we weighed the crickets and used a probe to transfer larvae to the crickets. Larvae were deposited on the dorsal surface of the cricket, along the membranous area between head and thorax (Vincent & Bertram 2009). We transferred three larvae to each cricket, which corresponds to a natural density of larvae found in cricket hosts infected by O. ochracea (1-3 larvae; Adamo et al 1995a;Kolluru & Zuk 2001).…”

Section: Infestationsmentioning

confidence: 99%

“…We transferred three larvae to each cricket, which corresponds to a natural density of larvae found in cricket hosts infected by O. ochracea (1-3 larvae; Adamo et al 1995a;Kolluru & Zuk 2001). Since larvae can move around on the cricket and may not successfully enter the host (Vincent & Bertram 2009), the number of larvae that emerged from some crickets was lower than the number transferred. However, larvae emerged from all infested crickets and all infested crickets died 7-10 days after initial infestation.…”

Section: Infestationsmentioning

confidence: 99%

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