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Larval density and developmental instability in the acoustically orienting parasitoid Homotrixa alleni. |
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| Authors: | J. Hunt G. R. Allen |
| Affiliation: | (1) Department of Zoology, University of Western Australia, Nedlands WA 6907, Australia e-mail: jhunt@cyllene.uwa.edu.au Tel.: +61-8-93803960, Fax: +61-8-93801029, AU;(2) School of Agricultural Science, University of Tasmania, GPO Box 252-54, Hobart, TAS 7001, Australia, AU |
| Abstract: | The relationship between developmental stress caused by intraspecific larval density and fluctuating asymmetry (FA) was examined in the tachinid parasitoid Homotrixa alleni. Individuals reared in larger clutches were significantly smaller in body size when they emerged as adults. As predicted, smaller individuals were shown to have significantly higher levels of FA in their tibiae. This negative relationship was consistent across each pair of tibia and the magnitude of FA was also significantly correlated between tibiae. The exact nature of the observed relationship between larval density and FA in H. alleni remains speculative. Received: 20 December 1999 / Received in revised form: 17 February 2000 / Accepted: 17 February 2000 |
| Keywords: | Larval density Body size Fluctuating asymmetry Environmental stress Tachinidae |
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