Field Studies with Osmia sanrafaelae Parker, a Pollinator of Alfalfa (Hymenoptera: Megachilidae)

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A native bee, Osmia sanrafaelae Parker, was field tested as a pollinator of alfalfa in southern Nevada. Bees were obtained from traps placed the previous season in southern Utah. Released bees renested, reproduced, and pollinated the target crop. Factors affecting manageability of this bee are discussed. Survival of immature stages averaged 53%. Heat was implicated as the primary cause of immature mortality. Percentage of females in the resulting population averaged 32.9%.

Document Type: Research Article

Publication date: April 1, 1986

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