Molecular phylogenetic analysis of the genus Strongyloides and related nematodes

Dorris, Mark; Viney, Mark; Blaxter, Mark

doi:10.1016/s0020-7519(02)00156-x

Cited by 223 publications

(201 citation statements)

References 33 publications

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“…tight congruence with primate phylogeny [2-4, 40,41]. This shows that cophylogeny occurred between pinworms and their primate hosts.…”

Section: N D S I N Pa R a S I T O L O G Y 24 (2008)mentioning

confidence: 75%

“…The presence of another parasite, S. stercoralis (threadworm), in prehistoric New World humans defied explanation for many years [29,39,40]. Threadworm has multiple variations in its life cycle: female juvenile worms infect humans either by burrowing through the skin or when the infective stage is swallowed.…”

Section: Strongyloides Stercoralismentioning

confidence: 99%

“…However, some juveniles remain in the intestine, where they molt to the infective stage and penetrate the host intestine through autoinfection. Autoinfections can thus maintain the nematode in one person for the lifetime of that person [29,39,40]. Endemic in tropical and subtropical regions presently, S. stercoralis has been found in three prehistoric sites in southwest North America [29,39,40].…”

Section: Strongyloides Stercoralismentioning

confidence: 99%

“…Autoinfections can thus maintain the nematode in one person for the lifetime of that person [29,39,40]. Endemic in tropical and subtropical regions presently, S. stercoralis has been found in three prehistoric sites in southwest North America [29,39,40]. Like whipworm and hookworm, migration of threadworm into the New World cannot be explained easily by a migration through Beringia because this parasite is restricted to warm climates by its life-cycle requirements in soil [29,39].…”

Section: Strongyloides Stercoralismentioning

confidence: 99%

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Parasites as probes for prehistoric human migrations?

Araújo

Reinhard

Ferreira

et al. 2008

Trends in Parasitology

118

102

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“…tight congruence with primate phylogeny [2-4, 40,41]. This shows that cophylogeny occurred between pinworms and their primate hosts.…”

Section: N D S I N Pa R a S I T O L O G Y 24 (2008)mentioning

confidence: 75%

Section: Strongyloides Stercoralismentioning

confidence: 99%

Section: Strongyloides Stercoralismentioning

confidence: 99%

Section: Strongyloides Stercoralismentioning

confidence: 99%

See 2 more Smart Citations

Parasites as probes for prehistoric human migrations?

Araújo

Reinhard

Ferreira

et al. 2008

Trends in Parasitology

118

102

View full text Add to dashboard Cite

“…240, wild adult male from the central area) identified as S. f. fuelleborni at the 18S rRNA locus clustered with sequences of S. callosciureus und S. robustus and had 99% identity with S. callosciureus (GenBank AB272230) at the ITS1 locus. Thus, there seem to be unresolved issues with regard to Strongyloides taxonomy (see for example Dorris et al 2002). Indeed, when analysing GenBank entries of the 18S rRNA gene of Strongyloides spp., identical sequences are deposited ascribed to S. f. kellyi (AJ417029), S. vituli (EU885229), S. papillosus (AJ417027) and S. cebus (AJ417025).…”

Section: Discussionmentioning

confidence: 99%

Genetic characterization ofStrongyloidesspp. from captive, semi-captive and wild Bornean orangutans (Pongo pygmaeus) in Central and East Kalimantan, Borneo, Indonesia

et al. 2011

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S U M M A R YOrangutans (Pongo spp.), Asia's only great apes, are threatened in their survival due to habitat loss, hunting and infections. Nematodes of the genus Strongyloides may represent a severe cause of death in wild and captive individuals. In order to better understand which Strongyloides species/subspecies infect orangutans under different conditions, larvae were isolated from fecal material collected in Indonesia from 9 captive, 2 semi-captive and 9 wild individuals, 18 captive groups of Bornean orangutans and from 1 human working with wild orangutans. Genotyping was done at the genomic rDNA locus (part of the 18S rRNA gene and internal transcribed spacer 1, ITS1) by sequencing amplicons. Thirty isolates, including the one from the human, could be identified as S. fuelleborni fuelleborni with 18S rRNA gene identities of 98·5-100%, with a corresponding published sequence. The ITS1 sequences could be determined for 17 of these isolates revealing a huge variability and 2 main clusters without obvious pattern with regard to attributes of the hosts. The ITS1 amplicons of 2 isolates were cloned and sequenced, revealing considerable variability indicative of mixed infections. One isolate from a captive individual was identified as S. stercoralis (18S rRNA) and showed 99% identity (ITS1) with S. stercoralis sequences from geographically distinct locations and host species. The findings are significant with regard to the zoonotic nature of these parasites and might contribute to the conservation of remaining orangutan populations.

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Unusual intestinal lamellae in the nematodeRhabditophanes sp. KR3021 (Nematoda: Alloinematidae)

et al. 2005

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The free-living nematode Rhabditophanes sp. has recently been placed in a clade of animal parasites and may be a unique example of a reversal to a nonparasitic lifestyle. Detailed morphological analysis of the intestine reveals the unusual and unique structure of splitting microlamellae forming a meshwork with cavities along the entire intestinal tract. Secretion vesicles were observed along the whole tract and along the length of the lamellae. It is suggested that these lamellae are adaptations to a different digestive strategy where low food availability and a low absorption surface are compensated for by maximizing the nutrient uptake efficiency along the entire length of the intestine. The likely reversal to a free-living life cycle may have caused drastic changes in diet, providing the necessary driving forces to such morphological changes.

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Molecular phylogenetic analysis of the genus Strongyloides and related nematodes

Cited by 223 publications

References 33 publications

Parasites as probes for prehistoric human migrations?

Parasites as probes for prehistoric human migrations?

Genetic characterization ofStrongyloidesspp. from captive, semi-captive and wild Bornean orangutans (Pongo pygmaeus) in Central and East Kalimantan, Borneo, Indonesia

Unusual intestinal lamellae in the nematodeRhabditophanes sp. KR3021 (Nematoda: Alloinematidae)

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