Journal article Open Access

Wing geometric morphometrics as a tool for taxonomic identification of two fly species (Diptera: Muscidae) of forensic relevance

José Antonio Nuñez; Pablo Jarrín-V; Jonathan Liria


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        <foaf:name>José Antonio Nuñez</foaf:name>
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            <foaf:name>Department of Morphological and Forensic Sciences. School of Biomedical and Technological Sciences. Faculty of Health Sciences, Universidad de Carabobo, Valencia, Venezuela</foaf:name>
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        <foaf:name>Pablo Jarrín-V</foaf:name>
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            <foaf:name>Research Group on Population and Environment, Universidad Regional Amazónica Ikiam, Napo, Ecuador.</foaf:name>
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        <foaf:name>Jonathan Liria</foaf:name>
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            <foaf:name>Center of Studies in Applied Zoology, Universidad de Carabobo, Valencia, Venezuela.</foaf:name>
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    <dct:title>Wing geometric morphometrics as a tool for taxonomic identification of two fly species (Diptera: Muscidae) of forensic relevance</dct:title>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2019</dct:issued>
    <dcat:keyword>Muscomorpha, Calyptratae, forensic entomology, landmarks.</dcat:keyword>
    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2019-09-30</dct:issued>
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    <dct:description>&lt;p&gt;The taxonomic identification of fly species through wing geometry is a helpful tool for entomologists and&lt;br&gt; officials involved in forensic research, who not necessarily require expertise on insect taxonomy.&lt;br&gt; Members of the Muscidae family are relevant sources of evidence in forensic entomology; however,&lt;br&gt; developing countries often lack experts in the taxonomical identification of essential species for the&lt;br&gt; assessment of aspects such as the minimum postmortem interval (mPMI). Our study proposes a low-cost,&lt;br&gt; fast, and technologically-accessible quantitative tool for the identification of Atherigona orientalis and&lt;br&gt; Ophyra aenescens, associated with human corpses at advanced states of decomposition. We propose a tool&lt;br&gt; that is based on the geometric variability observed in eight homologous landmarks on wing veins and the&lt;br&gt; interpretation of morphometric estimates after a generalized Procrustes analysis. The use of a geometric&lt;br&gt; approach for effective discrimination between Atherigona orientalis and Ophyra aenescens was supported&lt;br&gt; by statistically significant differences in wing conformation and size. The evidence presented in this study&lt;br&gt; shows that the analysis of geometric variability in the wing morphology of species of forensic relevance&lt;br&gt; can contribute to simple and objective species identification. Geometric morphometrics is a simple and&lt;br&gt; readily available tool for forensic science.&lt;/p&gt;</dct:description>
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