The influence of climate on melanism in the Two‐Spot ladybird, Adalia bipunctata, in central Italy
- 1 July 1975
- journal article
- Published by Wiley in Ecological Entomology
- Vol. 127 (2) , 163-169
- https://doi.org/10.1111/j.1365-2311.1975.tb00564.x
Abstract
SUMMARY: The frequency of black forms of the Two‐Spot ladybird, Adalia bipunctata, progressively decreases with increasing altitude, inland from Viareggio and Pisa; it increases again, though not to the same extent, to the north east of the Apennines. Probably temperature is an important selective agent, though air pollution may also have some effect.Keywords
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