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Geographic variability and wing plasticity in Sitona sulcifrons (Coleoptera: Curculionidae)

Published online by Cambridge University Press:  10 July 2009

Tomáš Pavlíček
Tomáš Pavlíček*
Affiliation:
Institute of Entomology, Czech Academy of Sciences, České Budějovice, Czech Republic.
*
Institute of Entomology, Branišovská 31, 370 05 České Budějovice, Czech Republic.
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Abstract

Genetic variability in four polymorphic loci and variation in phenotypic plasticity in relation to the relative size of wings, were compared and contrasted among eight local populations of Sitonasulcifrons Thunberg from the Czech and Slovak republics. The distances between localities from which samples were taken were between 49 and 492 kilometres. The results demonstrated that: 1. The variability between populations was 5.5% and the other 94.5% of the total variability was realized within populations. 2. Significant differences in allozyme frequencies among populations existed when distances were more than 100 km. A similar trend was also found in variability of relative wing size in males among populations when distances were more than 200 km. 3. Overall, a significant deficiency of heterozygotes in relation to Hardy-Weinberg predictions existed from all samples. The results support the idea that, at least inagricultural areas, gene flow in S. sulcifrons does not seem to be strong enough to stabilize one large interbreeding population in distances over 100 kilometres.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 84 , Issue 2 , June 1994 , pp. 269 - 273
Copyright
Copyright © Cambridge University Press 1994

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