22182621
not annotated - annotated - LINNAEUS only
The Role of Frass and Cocoon Volatiles in Host Location by Monodontomerus aeneus, a Parasitoid of Megachilid Solitary Bees.
Monodontomerus aeneus (Fonscolombe) is a parasitic wasp that oviposits on the prepupae and pupae of Osmia cornuta (Latreille) and other solitary bee species. A two-armed olfactometer was used to test the olfactory attractiveness of O. cornuta prepupae, cocoon, and larval frass to female M. aeneus. Both cocoon and frass attracted the female parasitoids, but frass alone was more attractive than the cocoon and the cocoon with frass was more attractive than frass alone. Female parasitoids were not attracted by the host prepupa. M33 (methanol) was the organic volatile most emitted by cocoons and m61 (acetic acid) was the compound most emitted by frass. However, cocoons showed higher emission for almost all compounds, including m61 (acetic acid). Although acetic acid alone attracted M. aeneus, a complex volatile signal is probably involved in the attraction process because the ratio of acetic acid and acetaldehyde characteristic of the frass was more attractive than other ratios.
Ann file
T1 Species 226 239 Osmia cornuta
N1 Reference T1 Taxonomy:185587
T2 Species 358 368 O. cornuta
N2 Reference T2 Taxonomy:185587
T3 Species 126 147 Monodontomerus aeneus
T4 Species 914 923 M. aeneus
T5 Species 414 423 M. aeneus
T6 Species 118 122 Bees
N3 Reference T6 Taxonomy:7460 Apis mellifera
T7 Species 271 274 bee
N4 Reference T7 Taxonomy:7460 Apis mellifera