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Patterns of widespread decline in North American bumble bees
- S. Cameron, J. Lozier, T. Griswold
- Environmental ScienceProceedings of the National Academy of Sciences
- 3 January 2011
It is shown that the relative abundances of four species have declined by up to 96% and that their surveyed geographic ranges have contracted by 23–87%, some within the last 20 y, although cause and effect remain uncertain.
A comprehensive phylogeny of the bumble bees (Bombus)
Using DNA sequence data, this work reports the first nearly complete species phylogeny of bumble bees, including most of the 250 known species from the 38 currently recognized subgenera, and provides a firm foundation for reclassification and for evaluating character evolution in the bumble Bees.
Decline of bumble bees (Bombus) in the North American Midwest
Global stingless bee phylogeny supports ancient divergence, vicariance, and long distance dispersal
Bayesian and maximum likelihood analyses strongly support a principal division of Meliponini into Old and New World groups, with the Afrotropical+Indo-Malay/Australian clades comprising the sister group to the large Neotropical clade.
Molecular Evolution: A Phylogenetic Approach.—Roderic D. M. Page and Edward C. Holmes.
Genes involved in convergent evolution of eusociality in bees
- S. H. Woodard, Brielle J. Fischman, G. Robinson
- BiologyProceedings of the National Academy of Sciences
- 11 April 2011
These results demonstrate that convergent evolution can involve a mosaic pattern of molecular changes in both shared and lineage-specific sets of genes, and provide a starting point for linking specific genetic changes to the evolution of eusociality.
Phylogeny and biology of neotropical orchid bees (Euglossini).
- S. Cameron
- BiologyAnnual review of entomology
- 28 January 2004
This review emphasizes areas in need of more study, particularly phylogeny, phylogeography, chemosensory ecology, and comparative behavior, and highlights how historical context can guide future research.
Patterns of range‐wide genetic variation in six North American bumble bee (Apidae: Bombus) species
- J. Lozier, J. Strange, Isaac J. Stewart, S. Cameron
- Environmental Science, BiologyMolecular ecology
- 1 December 2011
Screening genetic diversity in North American Bombus should prove useful for identifying species that warrant monitoring, and developing management strategies that promote high levels of gene flow will be a key component in efforts to maintain healthy populations.
Multiple molecular data sets suggest independent origins of highly eusocial behavior in bees (Hymenoptera:Apinae).
This work presents new data and taxa for four molecular data sets and reassess the morphological characters available to date, and accepts two equally well supported hypotheses of corbiculate bee relationships, which frame the argument that highly eusocial behavior within the corBiculate bees evolved twice independently.
Multiple origins of advanced eusociality in bees inferred from mitochondrial DNA sequences.
- S. Cameron
- BiologyProceedings of the National Academy of Sciences…
- 15 September 1993
Phylogenetic analyses of DNA sequence information from the mitochondrial genome of representative apid bees suggest that advanced eusocial behavior evolved twice independently within this assemblage.