Eur. J. Entomol. 96 (1): 23-27, 1999
Distribution and abundance of ladybirds (Coleoptera: Coccinellidae) in non-crop habitats
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The abundance and distribution of coccinellids in non-crop habitats was studied using removal sampling and visual observation. Coccinellids were most frequently found on grassland habitats. Coccinellid abundance appeared to be most strongly correlated with the percentage ground cover of thistle, grasses and nettles. The most commonly collected coccinellids were Coccinella septempunctata and Adalia bipunctata comprising 60% and 35% of the catches respectively. Most coccinellids were found on Rubus spp. with nettles (Urtica dioica) and grasses being the next most favoured plant species. Adalia bipunctata was the most commonly found coccinellid species on nettles and birch (Betula spp.) whereas C. septempunctata was the most commonly found species on grasses, Rubus spp. and oak (Quercus spp.). These results are discussed in light of current thinking on the importance of \"island\" habitats as pali of an integrated pest management programme.
Keywords: Coccinellidae, aphids, distribution, non-crop habitats, bio-control
Accepted: September 22, 1998; Published: April 15, 1999 Show citation
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