Correlation between ovarian growth, vitellogenin titer, and yolk polypeptide pattern in the haemolymph ofCalliphora vicina

Sørensen, Ilona Kryspin; Jensen, P. V.

doi:10.1007/bf01949396

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…This connection is clearly evident for natural odour sources and for the three‐component synthetic blend. Egg development may progress almost linearly with age (Sørensen & Jensen, 1982), although the onset of egg development may be considerably delayed and the rate of oogenesis may be variable between individuals (Davies, 1998, 2006). The speed of egg development is highly temperature‐dependent (Rognes, 1991).…”

Section: Discussionmentioning

confidence: 99%

Egg developmental status and the complexity of synthetic kairomones combine to influence attraction behaviour in the blowfly Calliphora vicina

Aak

Knudsen

2012

Physiological Entomology

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The flight responses of 750 female Calliphora vicina Robineau-Desvoidy, 1830 (Diptera: Calliphoridae) are investigated in a wind tunnel bioassay. The attraction of C. vicina towards dead mice and seven different synthetic lures made from dimethyl trisulphide, mercaptoethanol and O-cresol is compared. Responses towards natural odours and the three-component synthetic kairomones depend on the flies' ovarian egg developmental status. The natural and three-component lures also induce similar age-dependent responses, although the dead mice lure yields a significantly higher attraction. Oriented flight increases with the number of chemicals in the synthetic kairomone; one-, two-and three-compound lures induce 13-25%, 32-43% and 62% attraction, respectively. Responses to one-component lures are not significantly influenced by egg developmental status, whereas blends of two or three components are. Attraction levels increase in a stepwise manner both across egg developmental categories and with the number of compounds. The results suggest that the attractiveness of synthetic kairomones is influenced not only by the blowflies' physiological state, but also by the complexity of the lure.

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Section: Discussionmentioning

confidence: 99%

Egg developmental status and the complexity of synthetic kairomones combine to influence attraction behaviour in the blowfly Calliphora vicina

Aak

Knudsen

2012

Physiological Entomology

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“…Each fly was used only once, and after testing, was killed by freezing at − 18 • C. Females were then dissected to assess the stage of development of eggs according to four different categories: I = white to translucent follicles comprising a circular structure with no developed eggs; II = slightly developed, circular eggs; III = more developed, ellipse-shaped eggs, and IV = fully developed elongate eggs. These categories represent a simplified version of the C. vicina ovarian category scoring system (Davies, 1998(Davies, , 2006; increases in the length of the eggs (Sørensen & Jensen, 1982) approximate 25% development periods in a near-linear manner.…”

Section: Experiments Protocolmentioning

confidence: 99%

Blow fly responses to semiochemicals produced by decaying carcasses

Johansen

Solum

Knudsen³

et al. 2013

Medical Vet Entomology

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Volatiles from mouse carcasses in decay stages ranging from fresh to 33 days old were used to investigate oriented flight and landings in male and female blow flies of Calliphora vicina Robineau-Desvoidy (Diptera: Calliphoridae). Oriented flight increased significantly from 36% towards fresh carcasses to 68%, 61% and 65% towards carcasses aged 3 days, 6 days and 9 days, respectively. Carcasses aged 20 days and 33 days were significantly less attractive, achieving 51% and 41% attraction, respectively. No differences emerged between the sexes in oriented flight, but a significant increase in female landings at the most attractive carcasses was observed. Headspace collections from the different stages of decay showed a succession in the volatile profile emitted from the carcasses and identified nine chemicals which peak in quantity in concurrence with the most attractive stages of decay. Three of these chemicals also showed dose-response effects as indicated by a significant correlation between the amount present and the proportion of flies responding. Blow flies are important pests and efficient traps are needed. The significant interaction between fly sex and carcass age highlights behavioural differences between male and female blow flies which can be exploited in blow fly trapping. Three new volatile chemicals, butylated hydroxyl toluene, 3-hydroxy-2-butanone and nonanal, emitted from dead mice are suggested as potential attractants.

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Vitellin and vitellogenin concentrations during oögenesis in the first gonotrophic cycle of the house fly, Musca domestica

Adams

Filipi

1983

Journal of Insect Physiology

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Correlation between ovarian growth, vitellogenin titer, and yolk polypeptide pattern in the haemolymph ofCalliphora vicina

Cited by 3 publications

References 20 publications

Egg developmental status and the complexity of synthetic kairomones combine to influence attraction behaviour in the blowfly Calliphora vicina

Egg developmental status and the complexity of synthetic kairomones combine to influence attraction behaviour in the blowfly Calliphora vicina

Blow fly responses to semiochemicals produced by decaying carcasses

Vitellin and vitellogenin concentrations during oögenesis in the first gonotrophic cycle of the house fly, Musca domestica

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