Nesting site density and distribution affect Osmia lignaria (Hymenoptera: Megachilidae) reproductive success and almond yield in a commercial orchard

@article{Artz2013NestingSD,
  title={Nesting site density and distribution affect Osmia lignaria (Hymenoptera: Megachilidae) reproductive success and almond yield in a commercial orchard},
  author={Derek R Artz and Matthew J. Allan and Gordon I. Wardell and Theresa L. Pitts‐Singer},
  journal={Insect Conservation and Diversity},
  year={2013},
  volume={6}
}
The potential of commercially managed, native blue orchard bees, Osmia lignaria, to augment honey bees in orchard pollination depends on various factors, particularly how to enhance O. lignaria retention while optimising even pollination throughout orchards by varying their stocking density and nesting site distribution. In 2011, we investigated how artificial nest box density and the number of cavities within nest boxes influenced O. lignaria retention and reproduction in a 61 ha almond… 

Influence of Nest Box Color and Release Sites on Osmia lignaria (Hymenoptera: Megachilidae) Reproductive Success in a Commercial Almond Orchard

TLDR
The ability to locate nesting sites in a homogenous, large orchard landscape may be facilitated by the higher frequency of nest boxes with low numbers of cavities, and by the ability to detect certain nest box colors that best contrast with the blooming trees.

The Effect of Nest Box Distribution on Sustainable Propagation of Osmia lignaria (Hymenoptera: Megachilidae) in Commercial Tart Cherry Orchards

TLDR
Findings provide support for the use of O. lignaria in tart cherry orchards, and demonstrate how simple changes to bee set-up and management can influence propagation efforts.

Nesting and Pollen Preference of Osmia lignaria lignaria (Hymenoptera: Megachilidae) in Virginia and North Carolina Orchards

TLDR
Cavity-nesting megachilid bees in the genus Osmia, found throughout the Palearctic and Nearctic regions, are good candidates for domestication and appears to prefer Eastern redbud pollen over orchard pollen.

Assessing blue orchard bee (Osmia lignaria) propagation and pollination services in the presence of honey bees (Apis mellifera) in Utah tart cherries.

TLDR
While flying O. lignaria in Utah tart cherries may support sustainable in-field bee propagation, their subsequent impacts on tart cherry yield were not detected when paired with standard stocking densities of honey bees.

Wildflower plantings promote blue orchard bee, Osmia lignaria (Hymenoptera: Megachilidae), reproduction in California almond orchards

TLDR
This study highlights the importance of landscape context and proximity to supplementary floral resources in promoting the propagation of solitary bees as alternative managed pollinators in commercial agriculture.

Improving Osmia lignaria and O. cornifrons (Hymenoptera: Megachilidae) retention with preferred nest materials and attractant spray

TLDR
It is suggested that using the right combination of shelters and substrates, as well as the attractant spray, is an effective strategy to increase Osmia female retention for orchard pollination.

Progeny Density and Nest Availability Affect Parasitism Risk and Reproduction in a Solitary Bee (Osmia lignaria) (Hymenoptera: Megachilidae)

TLDR
It is suggested that cavity availability and progeny density can have substantial effects on brood parasitism risk and reproduction in this solitary bee species.

Nesting activity of cavity‐nesting bees and wasps is lower in small‐scale apple orchards compared to nearby semi‐natural habitats

TLDR
The results highlight the importance of diverse flowering herbaceous vegetation in the understory that increased the number of bee nests in orchards and that could have a positive effect on the nesting activity of the bee species active in summer.

Ecology and Economics of Using Native Managed Bees for Almond Pollination

TLDR
An ecological model for the effects of pollinator activity on almond yields, validated with published data, and then estimated changes in profits for different management strategies suggest that growers could improve profits by simply adding more nest boxes with moderate number of tubes in each.

Examination of a Managed Pollinator Strategy for Almond Production Using Apis mellifera (Hymenoptera: Apidae) and Osmia lignaria (Hymenoptera: Megachilidae)

TLDR
Almond orchard managerial decisions, such as for pesticide use and irrigation intensity, vary between almond growing regions because of local climates, and it is demonstrated that augmenting large commercial almond orchards with O. lignaria can significantly increase nut set and sometimes nut yield in both regions evaluated.

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