22182616
not annotated - annotated - LINNAEUS only
The ability of selected pupal parasitoids (hymenoptera: pteromalidae) to locate stable fly hosts in a soiled equine bedding substrate.
The ability of Spalangia cameroni Perkins, Spalangia endius Walker, and Muscidifurax raptorellus Kogan and Legner to locate and attack stable fly hosts was evaluated under laboratory conditions. Postfeeding third-instar stable fly larvae were released and allowed to pupate in two arena types: large 4.8 liter chambers containing a field-collected, soiled equine bedding substrate; or 120-ml plastic cups containing wood chips. At the time of fly pupariation, parasitoids were released and permitted 72 h to locate and attack hosts. On average, parasitism rates of freely accessible stable fly pupae in cups were not significantly different between parasitoid species. However, parasitism rates in chambers containing either Spalangia spp. were =50-fold more than M. raptorellus. Additional intraspecies analysis revealed that parasitism rates both by S. cameroni and S. endius were not significantly different when pupae were freely accessible or within bedding, whereas M. raptorellus attacked significantly more pupae in cups than in the larger chambers where hosts were distributed within bedding. These results suggest that Spalangia spp. are more suited to successfully locate and attack hosts in habitats created by equine husbandry in Florida. Therefore, commercially available parasitoid mixtures containing Muscidifurax spp. may be ineffective if used as a control measure at Florida equine facilities.
Ann file
T1 Species 80 90 stable fly
N1 Reference T1 Taxonomy:35570
T2 Species 152 170 Spalangia cameroni
N2 Reference T2 Taxonomy:162946
T3 Species 180 196 Spalangia endius
N3 Reference T3 Taxonomy:162947
T4 Species 209 233 Muscidifurax raptorellus
N4 Reference T4 Taxonomy:51938
T5 Species 272 282 stable fly
N5 Reference T5 Taxonomy:35570
T6 Species 357 367 stable fly
N6 Reference T6 Taxonomy:35570
T7 Species 720 730 stable fly
N7 Reference T7 Taxonomy:35570
T8 Species 901 915 M. raptorellus
N8 Reference T8 Taxonomy:51938
T9 Species 989 1000 S. cameroni
N9 Reference T9 Taxonomy:162946
T10 Species 1005 1014 S. endius
N10 Reference T10 Taxonomy:162947
T11 Species 1109 1123 M. raptorellus
N11 Reference T11 Taxonomy:51938