1,245 research outputs found
A failed invasion? Commercially introduced pollinators in Southern France
The natural diversity of Bombus terrestris subspecies could be under
threat from the commercialisation of bumblebees. Therefore, to determine whether
commercially imported bumblebees are able to establish and spread, we carried out
long-term observations of bumblebees in southern France. Our surveys occurred before,
during, and after the importation (between 1989 and 1996) of thousands of colonies of the
Sardinian subspecies B. t. sassaricus. Queens and males of B. t.
sassaricus were observed foraging outside commercial greenhouses in 1991, 1993,
and 1994 and feral workers were observed foraging on native vegetation nearly two years
after the importation of B. t. sassaricus ceased. However, no B.
t. sassaricus, or F1 hybrids were observed after 1998. We conclude that
B. t. sassaricus remains inconspicuous in France and competition from
the three native subspecies may have prevented it from becoming invasive. However, genetic
interference through introgression cannot be ruled out
Les Bourdons du genre Bombus Latreille sensu stricto en Europe Occidentale et Centrale (Hymenoptera, Apidae)
peer reviewe
La centrale thermodynamique de Llo : une catastrophe pour les abeilles sauvages
CERDAGNE Au Port de LLO, visible de partout, la préfète vient d'autoriser la destruction d'une zone humide remarquable pour sa richesse floristique et de très nombreuses espèces d'oiseaux protégées et de pollinisateurs. 40 hectares vont être sacrifiés au bénéfice d'une centrale solaire - qui selon ses promoteurs sera une vitrine pour l'exportation tout en bénéficiant pendant 20 ans sur le sol catalan d'un tarif d'achat préférentiel de l'électricité
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