02280nas a2200169   4500008004100000022001400041245011200055210006900167300001200236490000800248520172400256100002401980700002002004700002202024700002102046856004302067       2008                        eng d  a0008-347X00aPotential of bigleaf lupine for building and sustaining Osmia lignaria populations for pollination of apple0 aPotential of bigleaf lupine for building and sustaining Osmia li  a589-5990 v1403 aBees of the genus Osmia Panzer (Hymenoptera: Megachilidae) are among the contenders to replace honey bees, Apis mellifera L. (Apidae), for pollinating tree-fruit crops. One species, Osmia lignaria Say, has shown great potential in western North America and was recently introduced into Nova Scotia for evaluation as a pollinator of apple, Malus Mill. (Rosaceae). A major component of that study was to develop management options for O. lignaria, including methods of sustaining nesting females following crop flowering to maximize Population recovery for pollination in subsequent seasons. The objective of this study was to evaluate bigleaf lupine, Lupinus polyphyllus Lindl. (Fabaceae), as a secondary food plant for nesting female O. lignaria by investigating nesting activity, pollen-Use patterns, and fecundity. During 2002-2003, female O. lignaria collected high proportions of apple pollen (>70%) during mid and late flowering; after then, most pollen (>90%) was collected from bigleaf lupine. The flowering period Of lupine in Nova Scotia (late May to early July) slightly overlapped that of apple, so there was no scarcity of pollen resources during the life-span of O. lignaria. Most nests typically showed high levels (<= 200%) of population growth, but recorded levels varied among nest types and locations. In 2004, nests closer to lupine plots exhibited significantly greater population recovery than nests located farther away (i.e., approximately 600 m). Bigleaf lupine is a suitable plant species for meeting the pollen requirements of nesting populations of O. lignaria following apple flowering, thus promoting the recovery of populations to meet apple pollination requirements in subsequent seasons.1 aSheffield, Cory, S.1 aWestby, Sue, M.1 aSmith, Robert, F.1 aKevan, Peter, G.  uhttps://apoidea.myspecies.info/node/7401941nas a2200181   4500008004100000022001400041245014600055210006900201260001200270300001200282490000800294520132700302100002401629700002101653700002001674700002201694856004301716       2007                        eng d  a0008-347X00aDiversity of cavity-nesting bees (Hymenoptera : Apoidea) within apple orchards and wild habitats in the Annapolis Valley, Nova Scotia, Canada0 aDiversity of cavitynesting bees Hymenoptera Apoidea within apple  cMAR-APR  a235-2490 v1403 aSolitary cavity-nesting bees, especially trap-nesting Megachilidae, have great potential as commercial pollinators. A few species have been developed for crop pollination, but the diversity, abundance, and potential pollination contributions of native cavity-nesting bees within agricultural systems have seldom been assessed. Our objectives were to compare the diversity and fecundity of cavity-nesting bees in Nova Scotia in natural ecosystems with those in apple orchards under three levels of management, using trap nests, and to determine whether any native bees show promise for development as pollinators. Our results show that species richness and numbers of bees reared from trap nests in commercially managed orchards, abandoned orchards, and natural habitats were similar, and species’ compositional patterns were not unique to specific habitats. Trap nests can be used to increase and maintain cavity-nesting bee populations within Nova Scotia apple orchards. Osmia tersula Cockerell (Megachilidae), which accounted for almost 45% of all bees captured and was the most abundant species nesting in all habitats evaluated, should be assessed for potential as a commercial pollinator of spring-flowering crops. The influence of natural cavities on bee species richness in trap-nesting surveys is also discussed.1 aSheffield, Cory, S.1 aKevan, Peter, G.1 aWestby, Sue, M.1 aSmith, Robert, F.  uhttps://apoidea.myspecies.info/node/77