Mitochondrial DNA Diversity Among 17 Geographic Populations of Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)
| Autor: | L. J. Sandall, Thomas O. Powers, A. M. Tisler, G. W. Zehnder |
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| Rok vydání: | 1992 |
| Předmět: | |
| Zdroj: | Annals of the Entomological Society of America. 85:234-240 |
| ISSN: | 1938-2901 0013-8746 |
| DOI: | 10.1093/aesa/85.2.234 |
| Popis: | Restriction endonuclease cleavage patterns in Leptinotarsa decemlineata (Say) mitochondrial DNA (mtDNA) were compared in 16 populations from various geographic regions in the United States and one population from Mexico. Among the U.S. populations, five distinct mtDNA genotypes were identified, which differed by the loss or addition of one to three restriction sites. One common genotype was found in all populations except Washington, suggesting that beetles from one mitochondrial lineage rapidly colonized most U.S. locations. Three variant genotypes were shared by populations in Michigan and Virginia, supporting chromosomal evidence of a common historical linkage between beetles from these regions. Size polymorphism of the mitochondrial genome of approximately 300 bp was regularly observed in most populations. In contrast with all mitochondrial genotypes from U.S. populations of L. decemlineata , a population originating in Morales, southern Mexico, displayed an extremely divergent mitochondrial genotype, sharing only 17 of 68 restriction fragments. The great divergence between these genotypes, and the lack of mitochondrial diversity among U.S. populations, indicates that a majority of the mitochondrial genome variation in the species may exist in Mexico. |
| Databáze: | OpenAIRE |
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