Abstract:
:Characterization of DNA that remains in seafood products after skin, scales, and shells are removed is widely used in forensic species identification, however, ordinary methods may be prohibitively expensive or time-consuming if large sample series need to be discriminated. Forensic discrimination of two species of bivalves commercially harvested from the North Atlantic, sea scallops (Placopecten magellanicus) and Icelandic scallops (Chlamys islandica), was made by means of species-specific oligonucleotides (SSOs) in a multiplex polymerase chain reaction (PCR). The test is a simultaneous in vitro amplification of a portion of the mitochondrial Cytochrome Oxidase I locus with a PCR anchor primer for a sequence identical in both species, and two alternative SSOs that selectively amplify either a 619-bp in Placopecten or a 459-bp DNA fragment in Chlamys. Fragment size and thus species identity are determined directly by gel electrophoresis. In the forensic application, analysis of more than 900 scallops from a series of samples seized from two fishing vessels showed significantly variable proportions of the species from the closed and open fisheries (Placopecten versus Chlamys, respectively). The multiplex SSO test provides a direct means of forensic identification of large population sample series, without the necessity of secondary DNA sequencing, RFLP mapping, or fingerprinting, and can be adapted to other loci and species.
journal_name
Forensic Sci Intjournal_title
Forensic science internationalauthors
Marshall HD,Johnstone KA,Carr SMdoi
10.1016/j.forsciint.2006.05.043subject
Has Abstractpub_date
2007-03-22 00:00:00pages
1-7issue
1eissn
0379-0738issn
1872-6283pii
S0379-0738(06)00343-4journal_volume
167pub_type
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