Prey- and density-mediated dispersal in Carcinops pumilio (Coleoptera: Histeridae), a predator of house fly (Diptera: Muscidae) eggs and larvae.
Carcinops pumilio (Erichson) were collected using two trapping methods: a black light pitfall trap and a mesh-bottomed trap placed on poultry manure. C. pumilio collected with black lights and subsequently starved had a significantly higher dispersal rate during days 1-3 than fully fed groups. When densities of < 500 Caloglyphus berlesei (Michael) (Acarina: Acaridae) per 50 C. pumilio were provided, mite availability had a significant effect on dispersal of beetles captured with both black light traps and the mesh-bottomed trap during the day 1-3 period. Our results indicate that the availability of acceptable food sources can delay and possibly prevent dispersal by C. pumilio. Black light-captured beetles appeared to be in a state of dispersal when captured. A subset of dispersing beetles was present in groups captured with the mesh-bottomed trap.
Kaufman
P E
PE
Department of Entomology, Comstock Hall, Cornell University, Ithaca, NY 14853, USA.
Long
S J
SJ
Rutz
D A
DA
Glenister
C S
CS
D000818:Animals; D001517:Coleoptera; D003710:Demography; D006793:Houseflies; D007814:Larva; D008925:Mites; D010063:Ovum; D011156:Population Density; D011235:Predatory Behavior