Bombus pensylvanicus

 

References

Bumblebee 2013. <www.bumblebee.org>. Accessed 28 March 2013.

BBC. (2013). Bee Dynasty [Video]. Available from http://www.bbc.co.uk/nature/life/Bumblebee#p003xjcr.

 
Cameron, S.A., J.D. Lozier, J.B. Koch, N. Cordes, L.F. Solter, T.L. Griswold. 2011. Patterns of widespread decline in North American bumble bees.      108:662-667.

Discover Life 2013. <URL pick4.pick.uga.edu> Accessed Mar 14 2013.|

Encyclopedia of Life 2013 <URL eol.org> Accessed Mar 14 2013.

Lozier, J.D., S.A. Cameron. 2009. Comparative genetic analyses of historical and contemporary collections highlight contrasting demographic histories for the bumble bees Bombus pensylvanicus and B. impatiens in Illinois. Molecular Ecology. 18:1875-1886.

Meeus, I., M.J.F Brown, D.C. De Graaf, G. Smagghe. Effects of invasive parasites on bumble bee declines. 2011. Conservation Biology. 25:662-671.

NatureServe Explorer 2012. <URL NatureServe.org> Accessed Mar 14 2013.

Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.

Otti, O., P. Schmid-Hempel. 2007. Nosema bombi: a pollinator parasite with detrimental fitness effects. Journal of Invertebrate Pathology. 96:118-124.

Plath, Otto Emil. Bumblebees and Their Ways. Boston: McCallan Company, 1934. Print.

Pollinator Partnership. 2013. <URL: http://pollinator.org/pollination.htm> Accessed 6 April 2013.

Trani, Juan Di. 1996. Phenology of Bombus pennsylvanicus sorenus say. Neotropical Entomology. vol.35 no.5 Londrina Sept./Oct. 2006.