1986
DOI: 10.1007/bf00389428
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Large mitochondrial genome and mitochondrial DNA size polymorphism in the mosquito parasite, Romanomermis culicivorax

Abstract: Physical characterization of the mitochondrial genome derived from the obligate mosquito parasite, Romanomermis culicivorax has generated some surprising physical properties regarding the molecular structure of nematode mitochondrial DNA (mtDNA). Restriction enzyme analysis of this mtDNA has revealed a mitochondrial genome size of approximately 26 kb, the largest metazoan mtDNA reported to date. Isofemale lineages are monomorphic for one of three size variants, differing by 500-1,000 base pairs, present in our… Show more

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Cited by 33 publications
(13 citation statements)
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“…7; unpublished data), snakes (L. D. Densmore and F. Rose, personal communication), newts (8), frogs (9), fish (M. Hall, personal communication), and nematodes (10). The sequence additions have been characterized for mtDNAs from some lizards (7) and newts (8) and have been shown to be tandem duplications that include protein genes and/or rRNA genes as well as the control region.…”
mentioning
confidence: 99%
“…7; unpublished data), snakes (L. D. Densmore and F. Rose, personal communication), newts (8), frogs (9), fish (M. Hall, personal communication), and nematodes (10). The sequence additions have been characterized for mtDNAs from some lizards (7) and newts (8) and have been shown to be tandem duplications that include protein genes and/or rRNA genes as well as the control region.…”
mentioning
confidence: 99%
“…Since a common T. cosgrovei haplotype was never observed, it is inferred that T. cosgrovei mtDNA molecules undergo frequent rearrangement. In another mermithid nematode, Romanomermis culicivorax, at least three mtDNA size variants (26, 29, and 32 kb) have been fixed (Powers et al 1986), indicating that extensive mtDNA size polymorphism might be a common trait within this nematode lineage.…”
Section: Discussionmentioning
confidence: 99%
“…T. cosgrovei total genomic DNA was purified from individual nematodes using a mini-lysate procedure (Powers et al 1986) and used for hybridization analysis and as template in conventional PCR amplifications.…”
Section: Methodsmentioning
confidence: 99%
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“…First, there is no (23). Differences in size have been reported in population surveys of bowfin fish and tree frogs (24), in a nematode (19), in crickets (25), and in several species of lizard (26,27). The variant animals in these populations appear to be relatively uncommon, the most common type appearing in at least 80% of the population.…”
Section: Discussionmentioning
confidence: 99%