UNUSUAL POPULATION GENETICS OF A PARASITIC NEMATODE: mtDNA VARIATION WITHIN AND AMONG POPULATIONS
- 1 April 1992
- Vol. 46 (2) , 470-476
- https://doi.org/10.1111/j.1558-5646.1992.tb02052.x
Abstract
Very little is known about the distribution of genetic variance within and among populations of parasitic helminths. In this study we used mitochondrial DNA (mtDNA) restriction fragment analysis to describe the population genetic structure of Ostertagia ostertagi, a nematode parasite of cattle, in the United States. Estimates of within-population mtDNA diversity are 5 to 10 times greater than typical estimates reported for species in other taxa. Although populations are genetically differentiated for a key life-history trait, greater than 98% of the total genetic diversity is partitioned within populations, and the geographic distribution of individual mtDNA haplotypes suggests high gene flow among populations.Keywords
Funding Information
- U.S. Department of Agriculture (88‐34116‐3634)
This publication has 17 references indexed in Scilit:
- Intraspecific variation in parasites— What is a strain?Parasitology Today, 1990
- Genetic diversity and genetic differentiation inEchinococcus granulosus(Batsch, 1786) from domestic and sylvatic hosts on the mainland of AustraliaParasitology, 1990
- Molecular approaches to studying Helminth population genetics and phylogenyInternational Journal for Parasitology, 1990
- Genetic variability among natural populations of the liver fluke Fascioloides magna in white-tailed deer, Odocoileus virginianusCanadian Journal of Zoology, 1989
- Additional investigations on hypobiosis of Ostertagia ostertagi after transfer between northern and southern U.S.A.International Journal for Parasitology, 1988
- INTRASPECIFIC PHYLOGEOGRAPHY: The Mitochondrial DNA Bridge Between Population Genetics and SystematicsAnnual Review of Ecology and Systematics, 1987
- Effects of transfer of Ostertagia ostertagi between Northern and Southern U.S.A. on the pattern and frequency of hypobiosisInternational Journal for Parasitology, 1986
- Seasonal changes of gastrointestinal nematode populations in yearling beef cattle in Louisiana with emphasis on prevalence of inhibition in Ostertagia ostertagiInternational Journal for Parasitology, 1983
- Observations on ostertagiasis in young cattle over two grazing seasons with special reference to plasma pepsinogen levelsVeterinary Record, 1979
- Observations on the Epidemiology of Parasitic Gastro-enteritis in CalvesJournal of Helminthology, 1969