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United States Department of Agriculture

Agricultural Research Service

Research Project: Higher Diptera Pests of Livestock, Poultry, and Human Health: Integrated Pest Management and Adult Biology

Location: Mosquito and Fly Research Unit

Title: Development of microsporidia-infected Muscidifurax raptor (Hymenoptera: Pteromalidae) at different temperatures.

Authors
item Boohene, Carl -
item GEDEN, CHRISTOPHER
item BECNEL, JAMES

Submitted to: Biological Control
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: June 21, 2002
Publication Date: January 1, 2003
Citation: Boohene, C.K., Geden, C.J., Becnel, J.J. 2003. Development of microsporidia-infected Muscidifurax raptor (Hymenoptera: Pteromalidae) at different temperatures. Biological Control. 26:1-7.

Interpretive Summary: Muscididfurax raptor, a pupal parasitoid of house flies and other filth flies, is commonly infected with the microsporidium Nosema muscidifuracis. To determine the effects of infection on developmental time, uninfected and infected adult M. raptor were allowed to parasitize pupae of the house fly (Musca domestica) for 24 h. Exposed pupae of the two groups (infected and uninfected) were held at 15, 20, 25, 30, 32, and 34oC with 75–80% relative humidity. Development of infected M. raptor was significantly longer at all temperatures than that of uninfected parasitoids, resulting in approximately 7% extensions of developmental times. Uninfected females completed development in 14.6, 19.6, and 30.4 days at 30, 25, and 20oC, respectively, compared with 15.8, 20.7, and 32.3 days for infected females at these temperatures. The differences in developmental times provided narrow windows for isolating large proportions of uninfected M. raptor females for disease management programs. This window was greatest at 20oC; 61% of the uninfected females emerged by day 30, at which time only 10% of the infected females had emerged.

Technical Abstract: Muscididfurax raptor, a pupal parasitoid of house flies and other filth flies, is commonly infected with the microsporidium Nosema muscidifuracis. To determine the effects of infection on developmental time, uninfected and infected adult M. raptor were allowed to parasitize pupae of the house fly (Musca domestica) for 24 h. Exposed pupae of the two groups (infected and uninfected) were held at 15, 20, 25, 30, 32, and 34oC with 75–80% relative humidity. Development of infected M. raptor was significantly longer at all temperatures than that of uninfected parasitoids, resulting in approximately 7% extensions of developmental times. Uninfected females completed development in 14.6, 19.6, and 30.4 days at 30, 25, and 20oC, respectively, compared with 15.8, 20.7, and 32.3 days for infected females at these temperatures. The differences in developmental times provided narrow windows for isolating large proportions of uninfected M. raptor females for disease management programs. This window was greatest at 20oC; 61% of the uninfected females emerged by day 30, at which time only 10% of the infected females had emerged.

Last Modified: 8/27/2014
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