caa a22 4500 465788777 CHVBK 20180323112017.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF01065962 doi (NATIONALLICENCE)springer-10.1007/BF01065962 Allen Geoff Department of Entomology, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, South Australia, Australia aut Influence of host behavior and host size on the success of oviposition of Cotesia urabae and Dolichogenidea eucalypti (Hymenoptera: Braconidae) [Elektronische Daten] [Geoff Allen] Behavioral interactions among Cotesia urabaeAustin and Allen, Dolichogenidea eucalyptiAustin and Allen (Hymenoptera: Braconidae), and their host Uraba lugensWalker, the gum leaf skeletonizer (Lepidoptera: Noctuidae), were observed at three host sizes over a 20-min period. These sizes were first instar (small, gregarious), fourth-fifth instar (mid, gregarious), sixth-seventh instar (large, solitary) larvae. Unlike C. urabae, D. eucalyptiused its legs to hold small larvae before ovipositor insertion. D. eucalyptialso visited patches of small larvae more frequently, proceeded less often through patches of mid larvae, and made significantly fewer ovipositions in mid and large larvae. Small larvae responded to both parasitoids by dispersing outward, while mid larvae responded to parasitoids by moving inward to form a denser group. Larvae reared or thrashed after each parasitoid visit, especially mid larvae, and some continued to do so for up to 2h after parasitoid departure. Mid and large larvae occasionally injured parasitoids by biting their appendages. By rearing or thrashing immediately prior to an encounter with a parasitoid, mid and large larvae decreased the likelihood of being parasitized by up to 50%. Plenum Publishing Corporation, 1990 Cotesia urabae nationallicence Dolichogenidea eucalypti nationallicence Uraba lugens nationallicence Braconidae nationallicence Noctuidae nationallicence parasitoid nationallicence gregariousness nationallicence host acceptance nationallicence host defense nationallicence Journal of Insect Behavior Kluwer Academic Publishers-Plenum Publishers 3/6(1990-11-01), 733-749 0892-7553 3:6<733 1990 3 10905 https://doi.org/10.1007/BF01065962 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01065962 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Allen Geoff Department of Entomology, Waite Agricultural Research Institute, The University of Adelaide, 5064, Glen Osmond, South Australia, Australia aut NATIONALLICENCE 773 0- Journal of Insect Behavior Kluwer Academic Publishers-Plenum Publishers 3/6(1990-11-01), 733-749 0892-7553 3:6<733 1990 3 10905 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer