Temporal variation in genetic structure of a colonising species: Aedes albopictus in the United States

Kambhampati, Srinivas; Black, William C.; Karamjit, S.; Sprenger, D.

doi:10.1038/hdy.1990.34

Cited by 35 publications

(23 citation statements)

References 16 publications

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“…Similarly, variation in rDNA IGS was found among A. albopictus collected in nearby locations within cities 11 while gene flow estimates using allozymes markers suggested high rates of gene flow. [49][50][51] An isolation by distance model detected in this study sug- gests that gene flow among A. albimanus populations decreases with increasing geographic distances. Clusters of An.…”

Section: Discussionsupporting

confidence: 54%

Mitochondrial DNA variation among Anopheles albimanus populations.

Merida

Palmieri²,

Yurrita³

et al. 1999

The American Journal of Tropical Medicine and Hygiene

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Abstract. Barriers to gene flow between Pacific and Atlantic coast populations of Anopheles albimanus were reported in an earlier study of variation in the intergenic spacer of the nuclear ribosomal DNA. We examined the distribution of mitochondrial DNA haplotypes among A. albimanus populations to test for gene flow barriers with an independent genetic marker. A region of the NADH dehydrogenase subunit 5 gene was amplified by the polymerase chain reaction (PCR) in 1,105 mosquitoes collected from 16 locations in Guatemala and in single collections from Mexico, Honduras, Nicaragua, Costa Rica, Panama, Colombia, and Venezuela. The PCR products were tested for variation using single strand conformation polymorphism analysis and 45 haplotypes were detected. Haplotype frequencies did not vary between coasts in Guatemala. Populations within ϳ200 km of one another were panmictic. However, at distances Ͼ 200 km, F ST and geographic distances were correlated suggesting that populations are isolated by distance.Anopheles albimanus is one of the major vectors of malaria in Central America, the Caribbean, and coastal regions of northern South America. It feeds more readily on animals than humans, 1-3 and is generally exophilic in host-seeking and feeding behavior. [4][5][6] Sporozoite rates are generally low, with the greatest reported rate at only 1.6% (1 of 63). 7 However, these behavioral characteristics and vector competence estimates vary greatly among A. albimanus populations. 8 We have been testing for the presence of cryptic species within A. albimanus because of the strong historical precedence for the existence of cryptic, isomorphic Anopheles species.In an earlier study of Guatemalan A. albimanus populations, we observed a high degree of variation both in the frequency and copy number of intergenic spacer (IGS) length variants among individual A. albimanus. 9 Regardless of the collection site, most of the variation either in frequency or intensity of IGS variants was detected among mosquitoes within a population. The next largest component of genetic differentiation was detected between populations on the Pacific and Atlantic coasts of Central America. In contrast, populations from the Atlantic coast of Central America and from South America had similar IGS patterns. We suggested that the many mountain ranges that run through northern Central America could form barriers to gene flow among Atlantic and Pacific coast populations. However, extreme local variation in rDNA IGS has been found in many population studies of other insect species and is consistent with a model whereby molecular drive rapidly gives rise to unique spacer patterns in populations and then drives them to high frequencies. [10][11][12][13] In the case of A. albimanus, molecular drive probably occurs through unequal crossing-over and gene conversion within and among the 100-basepair (bp) repeat units constituting the IGS. 14 In the present paper, we test the inferences arising from our earlier rDNA study using an independent marker: variation in t...

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Section: Discussionsupporting

confidence: 54%

Mitochondrial DNA variation among Anopheles albimanus populations.

Merida

Palmieri²,

Yurrita³

et al. 1999

The American Journal of Tropical Medicine and Hygiene

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“…Similar effects were observed for Aedes albopictus, Pieris napi and Aglais urticae at an even larger geographical level (Kambhampati et al, 1990;Porter and Geiger, 1995;Vanderwoestijne et al, 1999;respectively). One major migration corridor of P. coridon in eastern France is assumed to be along the warm Rhô ne-Saô ne river systems ( Figure 5) as is also supposed for several dragonfly species (Sternberg, 1998).…”

Section: Postglacial Expansionsupporting

confidence: 58%

Postglacial colonisation of western Central Europe by Polyommatus coridon (Poda 1761) (Lepidoptera: Lycaenidae): evidence from population genetics

Schmitt¹,

Gießl²,

Seitz³

2002

Heredity

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The genetic population structure of Polyommatus coridon (Poda 1761) over large regions of France, Italy and Germany was studied by allozyme electrophoresis. The genetic diversity within populations was high for all parameters analysed (number of alleles 2.72; observed and expected heterozygosity 19.6% and 20.3%, respectively; percentage of polymorphic loci: total: 76.4% and, with polymorphism if the frequency of the commonest allele is below 95%: 53.1%), whereas genetic differentiation between populations was comparatively low (F ST = 0.021 ± 0.002). The mean number of alleles declined significantly from southern to northern populations (r = −0.53, P = 0.0005). Similar effects were found also for other parameters of genetic diversity. This is interpreted as a loss of genetic diversity during postglacial

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“…Elucidation of genetic variation in geographical populations can be an important aspect of pest studies (Kambhampati et al, 1990;Roehrdanz & Johnson, 1988), providing insight into the geographical origin of colonized populations (Kambhampati et a!., 1991). Within the native habitat, the extent of genetic variation between geographical populations depends on several factors, including gene flow between populations and time since separation (Hartl, 1980;Templeton et a!., 1990).…”

Section: Introductionmentioning

confidence: 99%

Geographical origin of an introduced insect pest, Listronotus bonariensis (Kuschel), determined by RAPD analysis

et al. 1994

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The Argentine stem weevil, Listronotus bonariensis (Kuschel) (Coleoptera: Curculionidae), is an important introduced pasture pest in New Zealand. In this study geographical populations of this species were analysed using polymerase chain reaction-based randomly amplified polymorphic DNA (RAPD), in an attempt to determine the geographical origin of the pest. Morphologically indistinguishable individuals were collected from nine South American, five New Zealand and one Australian populations. Ten primers were screened for usefulness, two of which revealed significant, scorable polymorphisms between these populations. The results indicated that the sampled New Zealand L. bonariensis populations originated from the east coast of South America.

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Temporal variation in genetic structure of a colonising species: Aedes albopictus in the United States

Cited by 35 publications

References 16 publications

Mitochondrial DNA variation among Anopheles albimanus populations.

Mitochondrial DNA variation among Anopheles albimanus populations.

Postglacial colonisation of western Central Europe by Polyommatus coridon (Poda 1761) (Lepidoptera: Lycaenidae): evidence from population genetics

Geographical origin of an introduced insect pest, Listronotus bonariensis (Kuschel), determined by RAPD analysis

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