BioControl (2004) 49, 397-415

Carlo Duso, Valeria Malagnini, Arturo Paganelli, Lorella Aldegheri, Maria Bottini and Stefan Otto (2004)
Pollen availability and abundance of predatory phytoseiid mites on natural and secondary hedgerows
BioControl 49 (4), 397-415
Abstract: Mites occurring on a number of natural and secondary (i.e., planted) hedgerows located in north-eastern Italy were monitored with particular attention being paid to phytoseiids (Acari: Phytoseiidae). Pollen diversity and abundance were analysed to highlight potential relationships between pollen availability and phytoseiids. Secondary hedgerows were structured in modules containing a single species (field maple, hornbeam, dogwood, hazel, and elderberry) and modules containing a mixture of the above-mentioned species. These hedgerows were located in an experimental farm where they were contiguous to a vineyard. Natural hedgerows were located in the same area. The pollen of Poaceae was the most important component of non-arboreal pollen (NAP), and that of elderberry of arboreal pollen (AP). Pollen diversity was higher on natural than on secondary hedgerows. Generally, pollen densities reached relatively high levels from late April to late June and decreased in summer. Pollen was more abundant on natural than on secondary hedgerows and phytoseiid abundance showed a similar trend. On elderberry and hornbeam in natural hedgerows a potential relationship between pollen availability and the abundance of phytoseiids, in particular of Euseius finlandicus (Oudemans) was found. Experimental pollen applications increased the fecundity and the abundance of this species.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Carlo Duso, Stefan Otto

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Euseius finlandicus (predator)			Italy