Pasquet Rémy auteur aut IRD Peltier A. auteur aut IRD Hufford M. B. auteur aut IRD Oudin E. auteur aut IRD Saulnier J. auteur aut IRD Paul L. auteur aut IRD Knudsen J. T. auteur aut IRD Herren H. R. auteur aut IRD Gepts P. auteur aut IRD text journalArticle eng text/pdf born digital access Foraging range, an important component of bee ecology, is of considerable interest for insect-pollinated plants because it determines the potential for outcrossing among individuals. However, long-distance pollen flow is difficuit to assess, especially when the plant also relies on self-pollination. Pollen movement can be estimated indirectly through population genetic data, but complementary data on pollinator flight distances is necessary to validate such estimates. By using radio-tracking of cowpea pollinator return flights, we found that carpenter bees visiting cowpea flowers can forage up to 6 km from their nest. Foraging distances were found to be shorter than the maximum flight range, especially under adverse weather conditions or poor reward levels. From complete flight records in which bees visited wild and domesticated populations, we conclude that bees can mediate gene flow and, in some instances, allow transgene (genetically engineered material) escape over several kilometers. However, most between-flower flights occur within plant patches, while very few occur between plant patches. specialized Cowpea Radio-tracking Vigna unguiculata Xylocopa flavorufa Vigna-unguiculata l Gene flow Radio telemetry Plant-populations Landscape-scale Nest density Dispersal Hymenoptera Migration Honeybee 080 076 105 36 13456-13461 2008 0027-8424 https://www.documentation.ird.fr/hor/fdi:010042781 10.1073/pnas.0806040105 0027-8424 [F B010042781] https://www.documentation.ird.fr/hor/fdi:010042781 https://www.documentation.ird.fr/intranet/publi/2008/10/010042781.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2008-11-07 2017-08-23 fdi:010042781 fre