אסיף מאגר המחקר החקלאי

Host handling time in a polyembryonic wasp is affected both by previous experience and by host state (parasitized or not)

Year:

2009

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Volume :

22

Co-Authors:

Segoli, M., Department of Life Sciences, Ben-Gurion University, Beer-Sheva 84105, Israel
Harari, A.R., Department of Life Sciences, Ben-Gurion University, Beer-Sheva 84105, Israel, Department of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Bouskila, A., Department of Life Sciences, Ben-Gurion University, Beer-Sheva 84105, Israel
Keasar, T., Department of Science Education - Biology, University of Haifa, Oranim, Israel, Department of Life Sciences, Achva College, Shikmim, Israel

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Abstract:

Foraging behavior for hosts in parasitoids resembles that of predators with respect to finding, evaluating and manipulating of the prey. Host handling time may depend on the life history of the parasitoid and can be affected by oviposition experience. Additionally, handling time can be affected by host aggregation, species, size and state (parasitized or not). We studied handling times in the egg-larval parasitoid wasp Copidosoma koehleri. We allowed naïve female wasps to oviposit into three consecutive unparasitized hosts, and measured time until oviposition, and the duration of ovipositor insertion. We recorded the same data for naïve females ovipositing into already parasitized hosts. We found that both previous experience by females and previous parasitism of hosts reduced handling time. The results suggest that host handling durations reflect the interplay between host state and parasitoid internal state. © Springer Science+Business Media, LLC 2009.

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