caa a22 4500 475834739 CHVBK 20180406123850.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1023/A:1009994405237 doi (NATIONALLICENCE)springer-10.1023/A:1009994405237 Oviposition behavior of Anagrus nigriventris,an egg parasitoid of beet leafhopper, Circulifer tenellus [Elektronische Daten] [A. Al-Wahaibi, G. Walker] Oviposition behavior of Anagrus nigriventris,a parasitoid of the eggs of the beetleafhopper,Circulifer tenellus, wasdescribed on sugar beet. Ovipositor probes ofrelatively long duration were accompanied by a periodof abdominal vibrations toward the end of the probe. These periods began as high frequency, low amplitudevibrations in the abdomen, and climaxed as a tremblingof the whole body in an up and down direction.Oviposition by the parasitoid was associated with theoccurrence of abdominal vibrations during a probe andwith probe durations ≥50 s; however thepresence/absence of abdominal vibrations during aprobe was considered a more reliable indicator ofoviposition than was a threshold probe duration of 50s. The majority of probes (63% of all probes) were inempty plant tissue, lasted 15 s, and were notassociated with abdominal vibrations. While probeswithout abdominal vibrations at host egg sites (14%of all probes) lasted an average of 48 s, probes withabdominal vibrations at host egg sites (23% of allprobes) lasted an average of 102 s, and all were ≥50s. It is hypothesized that the relative frequency ofthe 3 types of probes could be affected by the degreeof wasp experience, by the level of host cues on thesubstrate, and by the relative importance of ovipositor probing (vs. antennation) in the hostdetection process. Data from the study suggest thatA. nigriventris is able to discriminate againstpreviously attacked host eggs. Kluwer Academic Publishers, 2000 behavioral ecology nationallicence biological control nationallicence host age nationallicence host cues nationallicence host location nationallicence insect learning nationallicence parasitism nationallicence probing behavior nationallicence searching behavior nationallicence superparasitism nationallicence Al-Wahaibi A. Department of Entomology, University of California, Riverside, California, USA aut Walker G. Department of Entomology, University of California, Riverside, California, USA aut BioControl Kluwer Academic Publishers 45/2(2000-06-01), 139-153 1386-6141 45:2<139 2000 45 10526 https://doi.org/10.1023/A:1009994405237 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009994405237 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Al-Wahaibi A. Department of Entomology, University of California, Riverside, California, USA aut NATIONALLICENCE 700 1- Walker G. Department of Entomology, University of California, Riverside, California, USA aut NATIONALLICENCE 773 0- BioControl Kluwer Academic Publishers 45/2(2000-06-01), 139-153 1386-6141 45:2<139 2000 45 10526 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer