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                            Library & Multimedia
 Molecular Phylogeny of the Oestroidea
NCJ Number
              305958

Author(s)
          Baneshwar Singh
Date Published

2011
Length
              160 pages
Annotation
              For a better understanding of oestroid evolutionary hypotheses, phylogenies of Oestroidea were reconstructed at several taxonomic levels using DNA sequence data. The specific aims were to determine the phylogeny of the 1) genus Chrysomya Chrysomyinae); 2) subfamily Chrysomyinae (Calliphoridae); 3) family Oestridae (Oestroidea); and 4) family Calliphoridae (Oestroidea).
Abstract
              The superfamily Oestroidea includes approximately 9% (≈14,000 spp.) of the order Diptera. Many members of the superfamily are of medical, veterinary, agricultural, and forensic importance. Although Oestroidea has been the subject of much scientific scrutiny, the exact patterns of phylogenetic relationships among the key groups of the superfamily are unresolved and controversial. Sequence data from both mitochondrial and nuclear genes from 99 representative species were analyzed using maximum parsimony (MP), maximum likelihood (ML) and Bayesian (BA) methods. Trees obtained from the different phylogenetic methods were almost identical. The status of family Calliphoridae (the blow flies) has for years been the central systematic problem of the superfamily. These results show that Calliphoridae is polyphyletic, with the phylogenetic position of Mesembrinellinae still uncertain but clearly outside the lineage that includes other Calliphoridae and some non-calliphorids, and Polleniinae is the sister group of the family Tachinidae. Strong support for a sister group relationship between Rhiniinae and traditional calliphorid subfamilies undermines a recent proposal to give Rhiniinae family status. The Chrysomya and Chrysomyinae phylogenies were well resolved and suitable for testing a number of existing evolutionary hypotheses. The Chrysomyinae colonization of the neotropics apparently involved a single ancestral species, and the traditional chrysomyinae tribal classification should be abandoned. Tuberculate larvae evolved twice within Chrysomya, and published hypotheses about the evolution of sex determination, eye morphology, and genome size within the genus appear to be incorrect. Efforts to resolve the relationships of the Oestroid families were largely inconclusive, although the monophyly of the superfamily was strongly supported. (Published abstract provided)
      
  
          Additional Details
Grant Number(s)
        2003-RC-CX-K001


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Thesis/Dissertation


  
  
        
  Award
        Forensic Science Initiative 2003
    
  
  
Date Published: January 1, 2011
    
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