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Abstract
Allozyme polymorphism was investigated in adult males of the stenotopic peat bog (tyrphobiontic) noctuid moth, Coenophila subrosea Stephens, from three isolated peat bog localities in Austria (Styria) and Czech Republic (South and North Bohemia). Of the eighteen enzyme loci examined, twelve were polymorphic and six monomorphic. Significant deviations of genotype frequencies from Hardy-Weinberg equilibrium were observed at about one third of polymorphic loci within the populations. The average heterozygosities for the populations from three geographically distinct localities ranged from 0.192 to 0.245, and 61% of the loci were polymorphic. The FST mean value of 0.0675 was higher than that found in most other Lepidoptera. The genetic distances based on allozyme heterozygosity ranged from 0.019 to 0.051, with the population from South Bohemia being the most distant. The genetic distances and FST values do not reflect the geographic distances between the populations. Morphometric analysis revealed a difference between the Austrian Purgschachen Moor and Bohemian populations. These isolated relict peat bogs are habitat islands inhabited by unique geographical races of tyrphobiontic taxa.
Highlights
Accompanying the fragmentation and destruction of natural landscapes in Central Europe, there has been a si multaneous decline in the number and/or size of many animal and plant populations
All tyrphobiontic species are stenotopic, usu ally boreal or subarctic faunal components, and obligato rily associated with peat bogs (Warnecke 1926; Peus 1932; Mikkola & Spitzer 1983)
In this study we examined allozyme polymorphism in, and morphometric data for, three iso lated populations of this species in Central European peat bogs to determine whether these local populations have diverged genetically
Summary
Accompanying the fragmentation and destruction of natural landscapes in Central Europe, there has been a si multaneous decline in the number and/or size of many animal and plant populations. The rosy marsh moth, Coenophila subrosea (Stephens, 1829), is known to be closely associated with peat bogs in temperate and southern boreal zones. It is an oligophagous species associated mainly with Myrica gale (in Brit ish Isles) and several other alternative ericaceous bog food plants, e.g. Andromeda polifolia (Tillotson & Spitzer, 1998). Several isolated populations have been re corded in Europe outside Fennoscandia (Spitzer & Novak, 1969; Mikkola & Spitzer, 1983). This boreal moth is a very characteristic tyrphobiontic species. The investigated peat bogs are an cient habitat islands of high conservation value
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