NDLI: Inheritance of host finding ability on structurally complex surfaces

Content Provider	Springer Nature Link
Author	Andow, D. A. Olson, D. M.
Copyright Year	2003
Abstract	The connectivity of a surface (structural complexity) can have a significant effect on the host finding behavior and efficiency of parasitoids that must search the surface for hosts. We investigated whether the generalist egg parasitoid, Trichogramma nubilale Ertle and Davis (Hymenoptera: Trichogrammatidae), found hosts more efficiently on simple or complex surfaces, and evaluated the potential genetic basis of this variation using a full-sib/ half-sib mating design. Of the egg masses parasitized 63.8% were on the simple surface while only 36.2% were on the complex surface. There was significant repeatable variation among females (repeatability =0.59, n=19 females), with some better at finding hosts on simple surfaces and others better on complex surfaces. These results reinforce previous findings that structural complexity can affect host finding by parasitoids. The additive genetic variance in this character was not significant (sires =23, dams =46, progeny =92), but the maternal plus dominance variance (V m+1/2V d) was significant (P<0.036), and accounted for 48.8% of the total phenotypic variance. The maternal or dominance effects could have complex evolutionary consequences, causing the evolution of other foraging traits to be retarded, to overshoot their optima, or to have complex selective regimes. Thus, the evolution of foraging behavior may depend strongly on the mechanistic details of foraging behavior, including the effects of structural complexity on host finding.
Starting Page	324
Ending Page	328
Page Count	5
File Format	PDF
ISSN	00298549
Journal	Oecologia
Volume Number	136
Issue Number	2
e-ISSN	14321939
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-04-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Trichogramma Maternal effects Foraging Plant architecture Maize
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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