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Dipartimento di Scienze e Tecnologie Agroambientali, University of Bologna, Via Filippo Re, 6 40126 Bologna (Italy). Tel. +39 051 2091556; Fax +39 051 251052; E-mail: cporrini@entom.agrsci.unibo.it 2Expand
Effects of sub-lethal imidacloprid doses on the homing rate and foraging activity of honey bees
The results show that almost all the control honey bees returned to the hive, and started again visiting the feeder between 2 to 5 hours after the release, and they were not seen during the following 24 hours, neither at the hive nor at the feeding site. Expand
¹H-NMR simultaneous identification of health-relevant compounds in propolis extracts.
This work suggests that it is possible to efficiently use ¹H-NMR, coupled with appropriate spectral analytical tools, for the simultaneous detection of phenolic compounds in complex matrices. Expand
Effects of imidacloprid administered in sub-lethal doses on honey bee behaviour. Laboratory tests
Investigating if imidacloprid, provided in sub-lethal doses, could influence honey bee behaviour in the laboratory found that in the treated bees, the communicative capacity seemed to be impaired, and this could cause a decline in the social behaviour. Expand
The death of honey bees and environmental pollution by pesticides: the honey bees as biological indicators
The authors' studies with honey bees reveal the type of plant protection management applied to the area under investigation and allow us to prove the application of molecules not permitted under certain circumstances or even forbidden. Expand
Influence of brood rearing temperature on honey bee development and susceptibility to poisoning by pesticides
It is concluded that adult honey bees reared at even slightly suboptimal brood temperature may be more susceptible to pesticide poisoning and be characterised by reduced longevity, thus, low temperature brood rearing could be another stress factor for colonies. Expand
Detection of honey adulteration by sugar syrups using one-dimensional and two-dimensional high-resolution nuclear magnetic resonance.
The present research presents an effective method to detect adulteration in honey falsified by intentional addition of different concentrations of commercial sugar syrups, using one-dimensional and two-dimensional nuclear magnetic resonance (NMR) coupled with multivariate statistical analysis. Expand
Nectar Flavonol rhamnosides are floral markers of acacia (Robinia pseudacacia) honey.
Finding flavonoid glycosides in honey related to floral origin is particularly relevant as it considerably enlarges the number of possible suitable markers to be used for the determination of the floral origin of honeys. Expand
Chemical Communication in the Honey Bee Society
Together with the honey bee dance, honey bee pheromones represent one of the most advanced ways of communication among social insects.
Competition between the native and the introduced hornets Vespa crabro and Vespa velutina: a comparison of potentially relevant life‐history traits
1. Invasive alien species are a major threat to biodiversity and native species might suffer from competition when invasive alien species occupy a similar ecological niche. Expand