期刊
JOURNAL OF ECONOMIC ENTOMOLOGY
卷 106, 期 3, 页码 1089-1097出版社
OXFORD UNIV PRESS INC
DOI: 10.1603/EC12487
关键词
Megachile rotundata; diapause; thermal stress; respiration; metabolic rate
类别
资金
- National Science Foundation [EPS-0447679, IOS-0953297]
- National Institutes of Health National Center for Research Resources [2P20RR0l5566]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0953297] Funding Source: National Science Foundation
The alfalfa leafcutting bee, Megachile rotundata (F.), is a solitary, cavity-nesting bee and is the primary pollinator for alfalfa seed production. Bee management practices include cold storage during the prepupal stage. Fluctuating thermal regimes during cold storage increases survival of cold storage and allows a doubling of the cold storage period with no decrease in survival. However, survival, characterized as successful adult emergence, is not qualitative. In this study, we determined whether extended storage affects adult bee respiration or aight physiology. Weoverwintered bees for a single winter (current management protocol) or for 12 mo longer (extended storage). We used resting and tethered aight metabolic rates and resting critical PO2 (the oxygen partial pressure below which metabolism can no longer be sustained) as indices of adult bee quality. We found no significant differences in body mass, resting or aight metabolic rates, or critical PO2 between the two groups. Together these data indicate that extended storage of M. rotundata produces bees of similar respiratory capacity and aight ability. These ndings could increase the use of M. rotundata as an alternative pollinator, allowing for extended storage to time adult emergence with early blooming crops.
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