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First published online August 30, 2006
Journal of Experimental Biology 209, 3629-3635 (2006)
Published by The Company of Biologists 2006
doi: 10.1242/jeb.02416
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Effect of host kairomones and oviposition experience on the arrestment behavior of an egg parasitoid

Ezio Peri1, Mery Angelica Sole1, Eric Wajnberg2 and Stefano Colazza1,*

1 Dipartimento di Scienze Entomologiche, Fitopatologiche, Microbiologiche Agrarie e Zootecniche - Sezione di Entomologia, Acarologia e Zoologia, Università di Palermo, Viale delle Scienze, Palermo 90128, Italy
2 INRA, 400 Route des Chappes, BP167, 06903 Sophia Antipolis Cedex, France


Figure 1
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  		Fig. 1. Mean (± s.e.m.) response of T. basalis females encountering for the first time (naive, in grey) or re-encountering (experienced, in white) N. viridula adult resides. MM, experienced and tested on male traces; MF, experienced on male traces and tested on female traces; FM, experienced on female traces and tested on male traces; FF, experienced and tested on female traces. Asterisks indicate values that differed significantly within each condition (ns P>0.05, **P<0.01, ***P<0.001).

 

Figure 2
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  		Fig. 2. Mean (± s.e.m.) arrestment response of T. basalis females allowed to oviposit on a host egg-mass in the presence of either host male (m_ko; male kairomone) or female residues (f_ko), and then tested according to different conditions (e.g. oviposition on male traces and tested on male traces: m_ko_m; see text for a detailed explanation. b, blank - uncontaminated area). Different letters above the bars indicate significantly different means (ANOVA, Tukey's HSD).

 

Figure 3
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  		Fig. 3. Mean (± s.e.m.) arrestment response of T. basalis females exposed to four consecutive arenas at intervals of 1, 23, and 72 h treated with residues of N. viridula females (solid lines; experienced females) and T. basalis females tested at the same times (stippled bars; naive females). Means represented by lines and indicated by the same letters were not significantly different by ANOVA repeated measures followed by Tukey's test for multiple comparisons. Means represented by bars were not statistically different by one-way ANOVA. Vertical dotted lines indicate means that differ significantly based on t-test (ns P>0.05, **P<0.01, ***P<0.001).

 




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