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Unformatted text preview: Chad Davis Crithidia bombi is an endoparasite that lives in the mid- and hindgut of Bombus terrestrus or bumblebee (1). C. bombi is not usually fatal. But infected queens are not as successful in a sense of smaller colony production and an overall lower fitness than that of an uninfected queen (1). This protozoan flagellate is native to Europe. Due to commercial pollination, infected bumblebees were most likely brought to the U.S. for pollinization of green house crops (2). The biological taxonomic classification of C. bombi is Phylum Euglenozoa Class Kinetoplastea Order Trypanosomatida Genus Crithidia and species bombi (2). C. bombi is genetically highly diverse (4). Different strains can engage in genetic exchange many times when co-infecting a single host (4). C. bombi reproduces asexually but when conditions are favorable (co-infecting a host) they can exchange DNA (4). This results in Mendelian recombination, losing or gaining alleles, and strains with novel genotypes (4). Studies show many genotypes of C. bombi are present in one host (1). There were high frequencies of multiple strain infections in addition to the genotypic diversity of C. bombi (3). (3)....
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This note was uploaded on 04/22/2011 for the course BIOL 102L taught by Professor Gregemsfield during the Spring '11 term at Idaho State University.
- Spring '11