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DNA barcoding to identify leaf preference of leafcutting bees.

J Scott MacIvor1

  • 1Department of Biological Sciences , University of Toronto Scarborough , 1265 Military Trail, Toronto, Ontario, Canada M1C 1A5.

Royal Society Open Science
|April 13, 2016
PubMed
Summary
This summary is machine-generated.

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DNA barcoding identified leaf preferences for three leafcutting bee species in Toronto. Introduced species showed more diverse leaf use, with no native plant preference observed. This aids conservation by highlighting nesting material needs.

Area of Science:

  • Ecology
  • Entomology
  • Conservation Biology

Background:

  • Leafcutting bees (Megachile) use plant leaves for brood cells, but identifying preferred species is difficult.
  • Limited data exists on leaf preference, hindering conservation efforts for these important pollinators.

Purpose of the Study:

  • To identify and compare the leaf preferences of three widespread Megachile bee species in Toronto, Canada.
  • To utilize DNA barcoding for accurate plant species identification from leaf fragments.

Main Methods:

  • DNA barcoding of rcbL and ITS2 regions was used to analyze leaf pieces from Megachile rotundata, M. centuncularis, and M. pugnata nests.
  • 174 leaf pieces were sequenced, identifying 54 plant species.

Main Results:

Keywords:
ITS2MegachileMegachilidaeantimicrobial propertiesphylogenyrcbL

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  • M. rotundata exhibited the most diverse leaf preference (36 species), followed by M. centuncularis (23 species) and M. pugnata (18 species).
  • Significant overlap in leaf choice was found between M. rotundata and M. centuncularis.
  • No significant preference for native leaves was observed; M. centuncularis favored woody plants.

Conclusions:

  • Leafcutting bee nesting material preferences are diverse, with introduced species utilizing a broader range of plants.
  • The study highlights the importance of diverse plant resources for bee conservation, especially considering antimicrobial properties.
  • Understanding these nesting material needs is crucial for effective conservation strategies.