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

  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},
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

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

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

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.

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

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

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)

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

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.

Managing trap‐nesting bees as crop pollinators: Spatiotemporal effects of floral resources and antagonists

Trap nests could be a simple pollinator-supporting strategy to accompany the current expansion of mass-flowering crops, and to ensure pollination services for insect-pollinated crops.

Ecology and Economics of Using Native Managed Bees for Almond Pollination

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.



Field experiments with the pollinator species, Osmia lignaria propinqua Cresson (Hymenoptera: Megachilidae) in Apple Orchards: III, 1977 Studies

Nesting was successful in all four apple orchards, and the highest rate of nesting success was found in the N-N orchard, which clearly demonstrated that nest holes from which bees emerged were more attractive to nesting females than larger numbers of adjacent new holes.

Bee population returns and cherry yields in an orchard pollinated with Osmia lignaria (Hymenoptera: Megachilidae).

This is the first study reporting multiyear cherry yields in an orchard pollinated with O. lignaria in North America and average production was 2.2 times higher in 1998-2003 compared with 1992-1997.

Field experiments with the pollinator species, Osmia lignaria propinqua Cresson, in apple orchards: I, 1975 studies (Hymenoptera: Megachildiae)

A population of Osmia lignaria propinqua Cresson bees was mass-released into an isolated apple (Malus sylvestris Mill.) orchard supplied with numerous nest shelters to determine if release techniques

On managing the red mason bee (Osmia bicornis) in apple orchards

An extension of the framework of Bosch and Kemp (2002) that deals on how to develop a bee species into a crop pollinator is presented and a close relationship between the length of nesting tubes and achieved sex ratio and a negative effect of conventional farming on the number of nests built is found.

Potential of bigleaf lupine for building and sustaining Osmia lignaria populations for pollination of apple

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.

Wild pollination services to California almond rely on semi‐natural habitat

Although honeybees are the main and most important pollinating insects for many plants, wild pollinators may be necessary to ensure high fruit set and the restoration of high quality habitat strips along the edges of crop fields in highly intensified agricultural landscapes should be encouraged to conserve pollinators and to determine whether benefits for agriculture can be realized.

Development and Emergence of the Orchard Pollinator Osmia lignaria (Hymenoptera: Megachilidae)

Different developmental stages responded differently to the various temperature regimes, and bees that developed faster than at the equivalent constant temperatures could be wintered as early as August and incubated for emergence in March, 1 mo ahead of bees exposed to natural conditions.

Developing and establishing bee species as crop pollinators: the example of Osmia spp. (Hymenoptera: Megachilidae) and fruit trees

The development of a bee species as a new crop pollinator starts with the identification of a pollination-limited crop production deficit and the selection of one or more candidate pollinator species, and culminates with the delivery of a viable system to manage and sustain the new pollinator on a commercial scale.

Functional group diversity of bee pollinators increases crop yield

This study related differences in three functional traits of pollinating bees to the seed set of the obligate cross-pollinated pumpkin Cucurbita moschata Duch, leading to enhanced crop yield without any managed honeybees.

Fruit set of highland coffee increases with the diversity of pollinating bees

It is shown that fruit set of the self–fertilizing highland coffee (Coffea arabica) is highly variable and related to bee pollination, and empirical evidence for a positive relationship between ecosystem functions such as pollination and biodiversity is given.