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Field trials of Trichomalopsis sarcophagae (Hymenoptera: Pteromalidae) in cattle feedlots: a potential biocontrol agent of filth flies (Diptera: Muscidae)

Published online by Cambridge University Press:  02 April 2012

K.D. Floate*
Affiliation:
Agriculture and Agri-Food Canada, Lethbridge Research Centre, 5403 1st Avenue South, Lethbridge, Alberta, Canada T1J 4B1
*

Abstract

A field study was performed in southern Alberta, Canada, to assess the native wasp, Trichomalopsis sarcophagae (Gahan), as a potential biocontrol agent for house fly, Musca domestica L., and stable fly, Stomoxys calcitrans (L.). The wasp was readily reared in large numbers, which allowed for the cumulative release of an estimated 4.63 million wasps into three commercial feedlots during the 2-year study. Each of several releases predictably and repeatedly enhanced parasitism of sentinel house fly pupae, whereas parasitism remained low in three paired control feedlots where wasps were not released. Releases every 2nd week had a disproportionately greater effect than releases every 2nd month. In 1998, 1.2 million wasps were released into treatment feedlots resulting in the recovery of 3 952 T. sarcophagae from 31 500 sentinel pupae (0.13 wasps/pupa). In 1999, 3.43 million wasps were released into treatment feedlots, with the recovery of 37 763 wasps from 47 720 sentinel pupae (0.79 wasps/pupa). Hence, a 2.8-fold increase in the number of wasps released in 1999 resulted in a 6.1-fold increase in the recovery of wasps. This result supports industry recommendations of regular, repeated releases of wasps every 2nd or 4th week versus one or infrequent releases throughout the summer. There was no evidence that releases augmented overwintering populations of the wasp in subsequent years. These results provide proof-of-concept for the mass-rearing and release of T. sarcophagae as an inundative biocontrol agent for the control of pest flies in cattle confinements. Further studies will be required to assess the effect of T. sarcophagae releases on natural populations of pest flies.

Résumé

Cette étude a été entreprise dans le but d'évaluer en nature le potentiel de la guêpe indigène Trichomalopsis sarcophagae (Gahan) comme agent de lutte biologique contre la mouche domestique, Musca domestica (L.), et la mouche des étables, Stomoxys calcitrans (L.), dans le sud de l'Alberta. La guêpe s'est révélée facile à garder en élevage en grands nombres, ce qui a permis de relâcher, en plusieurs opérations, un total d'environ 4,63 millions de guêpes dans trois parcs d'engraissement commerciaux au cours d'une étude de 2 ans. Chacun des relâchements favorisait, de façon prévisible et répétée, le parasitisme des pupes de mouches sentinelles, alors que le taux de parasitisme est resté faible dans trois autres parcs appariés où il n'y avait pas eu de relâchement. Des relâchements toutes les 2 semaines ont eu un effet marqué, disproportionné par comparaison à celui de relâchements aux 2 mois. En 1998, 1,2 million de guêpes ont été relâchées dans des parcs d'engraissement expérimentaux, ce qui a donné lieu à une récolte de 3 952 adultes de T. sarcophagae sur 31 500 pupes sentinelles (0,13 guêpe/pupe). En 1999, 3,43 millions de guêpes ont été relâchées et 37 763 ont été recueillies sur 47 720 pupes (0,79 guêpe/pupe). Donc, à la suite de l'augmentation par un facteur de 2,8 du nombre de guêpes relâchées, le nombre de guêpes récupérées a été 6,1 fois plus élevé. Ce résultat confirme la pertinence de la recommandation par l'industrie de procéder à des relâchements répétés et réguliers toutes les 2 ou 4 semaines, plutôt qu'à un seul relâchement ou des relâchements peu fréquents pendant tout l'été. Aucun indice n'a permis de conclure à l'accroissement des populations de guêpes qui survivent à l'hiver au cours des années subséquentes à la suite de ces relâchements en masse. Nos résultats fournissent la justification du concept de l'élevage et du relâchement en masse de T. sarcophagae comme agent de lutte biologique inondative contre les mouches nuisibles dans les parcs à bétail. D'autres études sont nécessaires pour évaluer les effets des relâchements de T. sarcophagae sur les populations naturelles de mouches nuisibles.

[Traduit par la Rédaction]

Type
Articles
Copyright
Copyright © Entomological Society of Canada 2003

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References

Bruce, W.N., Decker, G.C. 1958. The relationship of stable fly abundance to milk production in dairy cattle. Journal of Economic Entomology 51: 269–74CrossRefGoogle Scholar
Campbell, J.B., Berry, I.L., Boxler, D.J., Clanton, D.C., Deutscher, G.H. 1987. Effects of stable flies (Diptera: Muscidae) on weight gain and feed efficiency of feedlot cattle. Journal of Economic Entomology 80: 117–9CrossRefGoogle ScholarPubMed
Catangui, M.A., Campbell, J.B., Thomas, G.D., Boxler, D.J. 1993. Average daily gains of Brahman-crossbred and English exotic feeder heifers exposed to low, medium, and high levels of stable flies (Diptera: Muscidae). Journal of Economic Entomology 86: 1144–50CrossRefGoogle ScholarPubMed
Cranshaw, W., Sclar, D.C., Cooper, D. 1996. A review of 1994 pricing and marketing by suppliers of organisms for biological control of arthropods in the United States. Biological Control 6: 291–6CrossRefGoogle Scholar
Dobesh, S.M., Petersen, J.J., Jones, J.A. 1994. Reproduction and development of Trichomalopsis species (Hymenoptera: Pteromalidae), a parasite of filth flies. Biological Control 4: 4852CrossRefGoogle Scholar
Floate, K.D. 2002. Production of filth fly parasitoids (Hymenoptera: Pteromalidae) on fresh and on freeze-killed and stored house fly pupae. Biocontrol Science and Technology 12: 595603CrossRefGoogle Scholar
Floate, K.D., Spooner, R.W. 2002. Parasitization by pteromalid wasps (Hymenoptera) of freeze-killed house fly puparia at varying depths in media. Journal of Economic Entomology 95: 908–11CrossRefGoogle ScholarPubMed
Floate, K.D., Khan, B., Gibson, G.A.P. 1999. Hymenopterous parasitoids of filth fly (Diptera: Muscidae) pupae in cattle feedlots of Alberta, Canada. The Canadian Entomologist 131: 347–62CrossRefGoogle Scholar
Floate, K.D., Coghlin, P., Gibson, G.A.P. 2000. Dispersal of the filth fly parasitoid Muscidifurax raptorellus (Hymenoptera: Pteromalidae) following mass-releases in cattle confinements. Biological Control 18: 172–8CrossRefGoogle Scholar
Gibson, G.A.P., Floate, K.D. 2001. The species of Trichomalopsis (Hymenoptera: Pteromalidae) associated with filth flies (Diptera: Muscidae) in North America. The Canadian Entomologist 133: 4985CrossRefGoogle Scholar
Harris, C.R., Turnbull, S.A., Whistlecraft, J.W. 1982. Multiple resistance shown by field strains of house fly, Musca domestica (Diptera: Muscidae), to organochlorine, organophosphorus, carbamate, and pyrethroid insecticides. The Canadian Entomologist 114: 447–54CrossRefGoogle Scholar
Legner, E.F. 1994. Biological control of Diptera of medical and veterinary importance. Journal of Vector Ecology 20: 59120Google Scholar
Lysyk, T.J. 1991. Effects of temperature, food, and sucrose feeding on longevity of the house fly (Diptera: Muscidae). Environmental Entomology 20: 1176–80CrossRefGoogle Scholar
Lysyk, T.J. 1995. Parasitoids (Hymenoptera; Pteromalidae, Ichneumonidae) of filth fly (Diptera: Muscidae) pupae at dairies in Alberta. Journal of Economic Entomology 88: 659–65CrossRefGoogle Scholar
Lysyk, T.J. 1998. Relationships between temperature and life history parameters of Trichomalopsis sarcophagae (Hymenoptera: Pteromalidae). Environmental Entomology 27: 488–98CrossRefGoogle Scholar
McKay, T., Galloway, T.D. 1999. Survey and release of parasitoid wasps (Hymenoptera: Pteromalidae, Ichneumonidae) attacking house flies and stable flies (Diptera: Muscidae) in dairy operations in Manitoba. The Canadian Entomologist 131: 743–56CrossRefGoogle Scholar
Petersen, J.J., Watson, D.W. 1992. Comparison of sentinel and naturally occurring fly pupae to measure field parasitism by pteromalid parasitoids (Hymenoptera). Biological Control 2: 244–8CrossRefGoogle Scholar
Thomas, G.D., Skoda, S.R. (Editors). 1993. Rural flies in the urban environment? NCR Research Publication No. 335, United States Department of Agriculture, Agricultural Research Service, Research Bulletin 317Google Scholar
Tobin, P.C., Pitts, C.W. 1999. Dispersal of Muscidifurax raptorellus Kogan and Legner (Hymenoptera: Pteromalidae) in a high-rise poultry facility. Biological Control 16: 6872CrossRefGoogle Scholar
Zchori-Fein, E., Geden, C.J., Rutz, D.A. 1992. Microsporidioses of Muscidifurax raptor (Hymenoptera: Pteromalidae) and other pteromalid parasitoids of muscoid flies. Journal of Invertebrate Pathology 60: 292–8CrossRefGoogle Scholar