Floral Resources and Nesting Requirements of the Ground-Nesting Social Bee, Lasioglossum malachurum (Hymenoptera: Halictidae), in a Mediterranean Semiagricultural Landscape.
Articolo
Data di Pubblicazione:
2010
Citazione:
Floral Resources and Nesting Requirements of the Ground-Nesting Social Bee, Lasioglossum malachurum (Hymenoptera: Halictidae), in a Mediterranean Semiagricultural Landscape / C. Polidori, A. Rubichi, V. Barbieri, L. Trombino, M. Donegana. - In: PSYCHE. - ISSN 0033-2615. - 2010:(2010). [10.1155/2010/851947]
Abstract:
In order to adopt correct conservation strike plans to maintain bee pollination activity it is necessary to know the species’ resource
utilisation and requirements. We investigated the floral resources and the nesting requirements of the eusocial bee Lasioglossum
malachurum Kirby at various sites in a Mediterranean landscape. Analysis of bees’ pollen loads showed that Compositae was the
more exploited family, although interpopulations differences appeared in the pollen types used. From5 to 7 pollen types were used
by bees, but only as few as 1–1.9 per load. Variations of the pollen spectrum through the annual nesting cycle were conspicuous.
At all sites, bees nested in horizontal ground areas with high soil hardness, low acidity, and rare superficial stones. On the other
side, the exploited soil was variable in soil granulometry (although always high in % of silt or sand) and it was moderately variable
in content of organic matter and highly variable in vegetation cover. Creation of ground patches with these characteristics in
proximity of both cultivated and natural flowering fields may successfully promote colonization of new areas by this bee.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
C. Polidori, A. Rubichi, V. Barbieri, L. Trombino, M. Donegana
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