Intraspecific Variation and Epidemiology

Thompson, R.C.A.

doi:10.1007/978-3-662-09200-2_6

Cited by 13 publications

(9 citation statements)

References 111 publications

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“…The morphological characteristics of the buccal apparatus were traditionally established as a basic set for studying the evolution and systematics of protozoan ciliata (Corliss, 1956). Thompson (1988) proposed that the term 'strain' should be used to refer to variants within a species of parasite that have been characterized by as many criteria as possible. Flow cytometry (FACS) is a technique that can be widely applied to quantify ciliates in culture (Lindström et al, 2002) and to demonstrate marked intraspecific ecological differences in the same ciliate isolates (Weisse and Montagnes, 1998;Montagnes and Weisse, 2000).…”

Section: Isolatesmentioning

confidence: 99%

Intraspecific variability in several isolates of Philasterides dicentrarchi (syn. Miamiensis avidus), a scuticociliate parasite of farmed turbot

Budiño

Lamas

Pata

et al. 2011

Veterinary Parasitology

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Section: Isolatesmentioning

confidence: 99%

Intraspecific variability in several isolates of Philasterides dicentrarchi (syn. Miamiensis avidus), a scuticociliate parasite of farmed turbot

Budiño

Lamas

Pata

et al. 2011

Veterinary Parasitology

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“…Intraspecific variation has been described from different geographic areas or host species in all major groups of parasites by applying a number of differential criteria [25]. Traditionally, the morphology was used as the sole differential criterion.…”

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confidence: 99%

Genetic Uniformity of Echinococcus multilocularis Collected from Different Intermediate Host Species in Hokkaido, Japan

Okamoto

Oku

Tsutomu

et al. 2007

The Journal of Veterinary Medical Science

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ABSTRACT. DNA from several isolates of Taenia taeniaeformis and Echinococcus multilocularis were digested with restriction enzymes and hybridized with digoxigenated oligonucleotide probe (CAC) 5 . Within the six wild isolates of Taenia taeniaeformis from Norway rats in Hokkaido, although several bands were common among isolates, fingerprinting patterns were specific to each isolate. In the case of E. multilocularis, regardless of hosts from which each isolate has been isolated, the five isolates collected from Hokkaido, showed the same fingerprinting pattern. These results indicate that there was very little genetic difference among these isolates. Although the fingerprinting pattern of E. multilocularis from St. Lawrence Is. was similar to that of the Hokkaido isolates, some bands were different from those in the Hokkaido isolates. Echinococcus multilocularis in Hokkaido seems to be closely-related genetically to that from St. Lawrence Is.

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“…Different strains of parasites are known to exhibit variability in characteristics such as host preference, virulence, and susceptibility to chemotherapy (Thompson 1982). The development of reliable means of identifying such strains is, therefore, of considerable medical and economic importance.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Hymenolepis diminuta (Cestoidea) strains, using enzyme isoelectric focusing

Arai¹

1991

Can. J. Zool.

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1991. Characterization of Hymenolepis diminuta (Cestoidea) strains, using enzyme isoelectric focusing. Can. J. Zool. 69: 1 130-1 132. This study evaluates the use of enzyme isoelectric focusing on thin-layer agarose gels in the differentiation of six geographical isolates of the rat tapeworm Hymenolepis diminuta. Differences in the enzyme profiles among these strains were apparent in two of five enzymes examined. A Japanese strain differed from all others in its more anodally positioned malic enzyme bands. This enzyme profile may be attributed to its more recent isolation from the wild type or to the unique origin of this strain. Two qualitatively different phosphoglucomutase banding patterns were apparent among the H. diminuta strains. This polymorphic nature of phosphoglucomutase has similarly been observed in a number of earlier studies. A number of problems are associated with the traditional morphological means of identifying cestodes, particularly at the intraspecific level. The enzyme pattern differences observed among the strains in this study indicate that enzyme isoelectric focusing may be a useful alternative. DIXON, B. R., et ARAI, H. P. 1991. Characterization of Hymenolepis diminuta (Cestoidea) strains, using enzyme isoelectric focusing. Can. J. Zool. 69 : 1 130-1 132. Nous avons cherchk a dkterminer si la technique de focalisation isoklectrique des enzymes sur gel d'agarose en couche mince pouvait diffkrencier avec prkcision six isolats gkographiques du cestode parasite du rat, Hymenolepis diminuta. Les differences entre les profils enzymatiques de ces souches ont kt6 bien mises en kvidence dans le cas de deux des cinq enzymes examinks. Une souche japonaise s'est avkrke trks diffkrente de toutes les autres par la position plus anodale de ses bandes d'enzyme malique. Ce profil est attribuable a la skgrkgation plus rkcente de cette souche de la souche sauvage, ou a son origine trks particulikre. Deux patterns de bandes de phosphoglucomutase qualitativement diffkrents sont apparus chez les souches de H. diminuta. La nature polymorphe de la phosphoglucomutase a dkja kt6 signalke dans plusieurs ktudes antkrieures. Bon nombre de problkmes sont associks aux moyens traditionnels morphologiques d'identification des cestodes, particulikrement au niveau intraspkcifique. Les diffkrences obtenues ici entre les patterns d'enzymes des diverses souches indiquent que la mkthode de focalisation isoklectrique des enzymes constitue une bonne mkthode de rechange.[Traduit par la redaction]

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Intraspecific Variation and Epidemiology

Cited by 13 publications

References 111 publications

Intraspecific variability in several isolates of Philasterides dicentrarchi (syn. Miamiensis avidus), a scuticociliate parasite of farmed turbot

Intraspecific variability in several isolates of Philasterides dicentrarchi (syn. Miamiensis avidus), a scuticociliate parasite of farmed turbot

Genetic Uniformity of Echinococcus multilocularis Collected from Different Intermediate Host Species in Hokkaido, Japan

Characterization of Hymenolepis diminuta (Cestoidea) strains, using enzyme isoelectric focusing

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