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Survey of Soybean Insect Pollinators: Community Identification and Sampling Method Analysis.

K A Gill¹, M E O'Neal²

¹The Xerces Society for Invertebrate Conservation, USDA Natural Resources Conservation Service, Columbus NJ 08022. oneal@iastate.edu.

Environmental Entomology

|August 28, 2015

Summary

This summary is machine-generated.

Soybean fields in Iowa host a diverse pollinator community, primarily native solitary bees. Bee bowls proved most effective for sampling these crucial soybean pollinators.

Keywords:

Apis mellifera native bee pollen soybean syrphid

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Collection and Identification of Pollen from Honey Bee Colonies

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Area of Science:

Entomology
Ecology
Agriculture

Background:

Soybean (Glycine max) flowers provide nectar and pollen for various pollinators, including honey bees, wild bees, and flies.
Understanding soybean's pollinator community is vital for crop yield and ecosystem health.

Purpose of the Study:

To characterize the pollinator community in Iowa soybean fields.
To evaluate the effectiveness of different sampling methods (bee bowls, yellow sticky traps, sweep nets) for pollinator assessment.
To determine if key bee species collect soybean pollen.

Main Methods:

Pollinators were trapped using modified pan traps (bee bowls), yellow sticky traps, and sweep nets in Iowa soybean fields during the R1-R6 reproductive stages in 2011 and 2012.
Collected specimens were identified to species level.
Pollen loads on captured bees were examined for the presence of soybean pollen.

Main Results:

A total of 5,368 individuals from at least 50 species were collected across all methods.
Bee bowls captured the highest number of individuals (3,644) and species (44), indicating superior efficacy.
Soybean pollen was found on 29% (2011) and 38% (2012) of examined bees with pollen loads, confirming foraging activity.

Conclusions:

Iowa soybean fields support a diverse pollinator community, dominated by native solitary bees.
Modified bee bowls are the recommended method for effectively sampling soybean field pollinators.
Native bees actively forage on soybean flowers, contributing to pollination services.