A test for carrion fly full siblings: a tool for detecting postmortem relocation of a corpse |
| |
Authors: | Picard Christine J Wells Jeffrey D |
| |
Affiliation: | Department of Biology, West Virginia University, Morgantown, WV, USA. cpicard@iupui.edu |
| |
Abstract: | We propose a genetic test for full sibship for a pair of carrion flies that could reveal the postmortem relocation of a corpse. A carrion fly larva is sometimes left behind when a corpse is moved. The discovery of full sibling larvae of approximately the same developmental stage at two locations would strongly suggest that a corpse was moved between those two sites. Distributions of pairwise comparisons of relatedness (R) coefficients were generated using amplified fragment length polymorphism profiles for nine samples of laboratory-generated full siblings as well as for a reference sample of nonfull sibling Phormia regina (Diptera: Calliphoridae). The mean relative R coefficient, a pairwise measure of the proportion of shared alleles, was 0.479 (±0.289 SD) for full siblings, close to the theoretical expectation of 0.5. A likelihood ratio (LR) test was based on observed distributions of R. R >0.55 corresponded to an LR >1000 favoring full sibship for that pair of individuals. |
| |
Keywords: | forensic science forensic entomology Phormia regina postmortem movement likelihood ratio test amplified fragment length polymorphisms |
本文献已被 PubMed 等数据库收录! |
|