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Loxodonta Localizer: A Software Tool for Inferring the Provenance of African Elephants and Their Ivory Using
Kai Zhao1, Yasuko Ishida1, Cory E Green1
1Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL.
The Journal of Heredity
|November 2, 2019
Summary
Illegal hunting threatens African elephants. A new tool, the Loxodonta Localizer, uses mitochondrial DNA from tusks to quickly identify poaching hotspots and the origin of confiscated ivory.
Area of Science:
- Conservation genetics
- Wildlife forensics
- Population genetics
Background:
- Illegal hunting is a primary threat to African elephants, with poaching exceeding natural mortality rates.
- Genetic analysis of confiscated ivory aids in tracing illegal trade routes and identifying source populations.
- Mitochondrial DNA (mtDNA) offers a viable marker for geographic origin due to female elephant philopatry.
Purpose of the Study:
- To introduce the Loxodonta Localizer (LL), an interactive software tool for determining the provenance of confiscated ivory.
- To utilize a database of mtDNA sequences for rapid geographic assignment of elephant populations.
- To aid conservation efforts by identifying poaching hotspots.
Main Methods:
- Development of the Loxodonta Localizer (LL) software (www.loxodontalocalizer.org).
- Compilation of a database of mtDNA sequences from published studies.
- Analysis of a 316 bp mtDNA control region sequence from ivory samples.
- Querying the database to generate a list of similar haplotypes and their geographic origins.
Main Results:
- The LL software successfully lists haplotypes from 1917 African elephants across 24 countries, sorted by similarity.
- Geographic locations associated with specific haplotypes are visualized on a map.
- The tool demonstrates utility in identifying origins from single localities and countries with varying sampling densities.
- Rapid assessment of confiscated ivory sources is achievable within days.
Conclusions:
- The Loxodonta Localizer provides a rapid, accessible method for assessing the geographic origin of confiscated ivory using mtDNA.
- This tool can significantly enhance efforts to combat illegal elephant hunting by identifying targeted populations.
- The LL supports conservation strategies by enabling timely identification of poaching trends and source regions.
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