The Potential of Alfalfa Leafcutter Bees (Megachile Rotundata L.) as Pollinators of Cranberry (Vaccinium Macrocarpon Aiton)

MacKenzie, K.; Javorek, S. K.

doi:10.17660/actahortic.1997.437.43

Cited by 5 publications

(2 citation statements)

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“…Cranberry pollination research in North America has largely been conducted in the Great Lakes and New England areas and has focused on the use of commercially available bee species: honeybees, managed bumble bees (Bombus spp. ; Cane and Schiffhauer, 2003;Evans and Spivak, 2006;Stubbs and Drummond, 1997), leafcutter bees (Megachile spp; Cane et al, 1996;Cane and Schiffhauer, 2003;MacKenzie and Javorek, 1997;Stubbs and Drummond, 1997), and mason bees (Osmia spp. ; Cane and Schiffhauer, 2003;Stubbs and Drummond, 1997).…”

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confidence: 99%

Native Bees, Honeybees, and Pollination in Oregon Cranberries

Broussard¹,

Rao²,

Stephen³

et al. 2011

horts

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Cultivated cranberry (Vaccinium macrocarpon Aiton) relies on insect pollination for berry production. Honeybees (Apis mellifera L.) have historically provided this service, but their recent decline has underscored the need for additional pollinators. The objective of this study was to determine the richness and abundance of native bees in the cranberry-growing area of southern coastal Oregon and compare foraging behaviors of honeybees and native bees. In a 2-year study, we collected over 27 native bee species in traps set out during and after bloom (mid-May to mid-June). During 67 2-min observations, honeybees (68.1%) and three species of bumble bees (Bombus spp.; 31.6%) comprised 99.7% of foragers. The dominant bumble bee was Bombus vosnesenskii Radoszkowski (56.0%). Multivariate regression of temperature and wind speed data indicated that both were significantly predictive of honeybee and bumble bee foragers (P < 0.001). The interquartile range for foraging was 18.3 to 22.2 °C for bumble bees and 21.1 to 26.7 °C for honeybees. Over 75% of honeybees were seen foraging above the average observed temperature (19.5 °C). Bumble bee pollen loads had a greater dry mass (6.8 ± 12.9 mg) than those of honeybees (2.0 ± 3.6 mg; P < 0.001), and the latter were observed collecting nectar but no pollen more often (during 37.2% of visits) than bumble bees (11.3% of visits). Based on our results, bumble bees in general, and B. vosnesenskii in particular, may be providing significant pollination services for Oregon cranberry farms. However, to maintain current native bumble bee populations, conservation efforts are recommended.

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confidence: 99%

Native Bees, Honeybees, and Pollination in Oregon Cranberries

Broussard¹,

Rao²,

Stephen³

et al. 2011

horts

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“…More recently, its significant role as a pollinator has resulted in an intense nest trade and transport across different crops and regions (Roubik 2000;Imperatriz-Fonseca et al 2006;Slaa et al 2006). Bumblebees, solitary bees, and stingless bees have also been managed commercially, albeit on a smaller scale, such as in greenhouses, protected environments and on organic and conventional farms (Asada and Ono 1997;Cane 1997;MacKenzie and Javorek 1997;Heard 1999;Calvete et al 2003;Kremen et al 2004;Hogendoorn et al 2006;Klein et al 2007;Antunes et al 2007).…”

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confidence: 99%

Genetic variability in captive populations of the stingless bee Tetragonisca angustula

et al. 2016

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Low genetic variability has normally been considered a consequence of animal husbandry and a major contributing factor to declining bee populations. Here, we performed a molecular analysis of captive and wild populations of the stingless bee Tetragonisca angustula, one of the most commonly kept species across South America. Microsatellite analyses showed similar genetic variability between wild and captive populations However, captive populations showed lower mitochondrial genetic variability. Male-mediated gene flow, transport and division of nests are suggested as the most probable explanations for the observed patterns of genetic structure. We conclude that increasing the number of colonies kept through nest divisions does not negatively affect nuclear genetic variability, which seems to be maintained by small-scale male dispersal and human-mediated nest transport. However, the transport of nests from distant localities should be practiced with caution given the high genetic differentiation observed between samples from western and eastern areas. The high genetic structure verified is the result of a long-term evolutionary process, and bees from distant localities may represent unique evolutionary lineages.

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Berry Fruits

Abrol¹

2015

Pollination Biology, Vol.1

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The Potential of Alfalfa Leafcutter Bees (Megachile Rotundata L.) as Pollinators of Cranberry (Vaccinium Macrocarpon Aiton)

Cited by 5 publications

References 0 publications

Native Bees, Honeybees, and Pollination in Oregon Cranberries

Native Bees, Honeybees, and Pollination in Oregon Cranberries

Genetic variability in captive populations of the stingless bee Tetragonisca angustula

Berry Fruits

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