The phylogeny of diphyllobothriid tapeworms (Cestoda: Pseudophyllidea) based on ITS-2 rDNA sequences

Logan, Flora J.; Horák, Aleš; Štefka, Jan; Aydoğdu, Ali; Scholz, T.

doi:10.1007/s00436-004-1164-y

Cited by 33 publications

(16 citation statements)

References 27 publications

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“…Indeed, recent studies support such a view by the recovery of genetically distinct plerocercoid isolates (Olson et al. 2002; Li and Liao 2003; Logan et al. 2004).…”

Section: Introductionmentioning

confidence: 90%

Genetic diversity ofLigula intestinalis(Cestoda: Diphyllobothriidea) based on analysis of inter-simple sequence repeat markers

Bouzid

Lek

Macé

et al. 2008

Journal of Zoological Systematics and Evolutionary Research

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In order to investigate the genetic diversity of Ligula intestinalis populations, nine inter-simple sequence repeat (ISSR) markers were applied to populations from nine geographical areas around the world and 10 host species. The 110 loci selected from the ISSR patterns produced revealed high variability among the analysed samples, with a polymorphism of 100% and a global coefficient of gene differentiation estimated by NeiÕs index (G ST ) of 0.776. Major genetic differentiation was found to be correlated to five broad geographical regions (Europe, China, Canada, Australia and Algeria). Nevertheless, no significant genetic variation was found among European isolates, although they originated from disparate geographical localities and⁄or unrelated hosts. Classical classification methods: maximum parsimony and factorial correspondence analysis were compared with an advanced statistical method: the self-organizing map (SOM). The results demonstrated that the ISSR approach is rapid and inexpensive and provides reliable markers to assess genetic diversity of L. intestinalis. Furthermore, SOM artificial neuronal networks are considered to provide an efficient alternative tool for mapping the genetic structures of parasite populations.

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“…Indeed, recent studies support such a view by the recovery of genetically distinct plerocercoid isolates (Olson et al. 2002; Li and Liao 2003; Logan et al. 2004).…”

Section: Introductionmentioning

confidence: 90%

Genetic diversity ofLigula intestinalis(Cestoda: Diphyllobothriidea) based on analysis of inter-simple sequence repeat markers

Bouzid

Lek

Macé

et al. 2008

Journal of Zoological Systematics and Evolutionary Research

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“…The sequencing of nuclear and mitochondrial DNAs provided essential data for the identification and the phylogeny of Diphyllobothrium tapeworms. Phylogenetic trees based on sequences of ribosomal genes (18S rRNA and 28S rRNA) and ITS1-5.8S-ITS2 regions have been used to elucidate the relationships among some taxa (22,92). However, these data are not useful for the routine discrimination of all Diphyllobothrium species (180).…”

Section: Molecular Diagnosismentioning

confidence: 99%

Update on the Human Broad Tapeworm (GenusDiphyllobothrium), Including Clinical Relevance

et al. 2009

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SUMMARYTapeworms (Cestoda) continue to be an important cause of morbidity in humans worldwide. Diphyllobothriosis, a human disease caused by tapeworms of the genusDiphyllobothrium, is the most important fish-borne zoonosis caused by a cestode parasite. Up to 20 million humans are estimated to be infected worldwide. Besides humans, definitive hosts ofDiphyllobothriuminclude piscivorous birds and mammals, which represent a significant zoonotic reservoir. The second intermediate hosts include both freshwater and marine fish, especially anadromous species such as salmonids. The zoonosis occurs most commonly in countries where the consumption of raw or marinated fish is a frequent practice. Due to the increasing popularity of dishes utilizing uncooked fish, numerous cases of human infections have appeared recently, even in the most developed countries. As many as 14 valid species ofDiphyllobothriumcan cause human diphyllobothriosis, withD. latumandD. nihonkaiensebeing the most important pathogens. In this paper, all taxa from humans reported are reviewed, with brief information on their life history and their current distribution. Data on diagnostics, epidemiology, clinical relevance, and control of the disease are also summarized. The importance of reliable identification of human-infecting species with molecular tools (sequences of mitochondrial genes) as well as the necessity of epidemiological studies aimed at determining the sources of infections are pointed out.

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“…heteropleura, B. solinosomum, and E. wageneri, which belong to 2 different families. However, intensively stained corpuscles of similar shape and size were also observed in species of Bathycestus Scholz, 2004, andFistulicola Lühe, 1899 (R. Kuchta, unpubl. obs.…”

Section: Discussionmentioning

confidence: 82%

A New Triaenophorid Tapeworm from Blackfish Centrolophus niger

Kuchta

Scholz

2008

Journal of Parasitology

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Milanella familiaris n. gen. and n. sp. (Bothriocephalidea: Triaenophoridae) is proposed to accommodate a new cestode from blackfish Centrolophus niger (Gmelin) (Perciformes: Centrolophidae). Milanella is characterized as follows: trapeziform, i.e., markedly craspedote proglottids with a velum-like posterior margin and horn like lateral projections; pyriform uterine sac in the first gravid proglottids; arrow-shaped scolex with well-developed apical disc and prominent posterior margins; strobila with intensively stained corpuscles, most numerous in the anterior part; deeply lobated ovary; absence of a neck; a large, pyriform, thin-walled cirrus-sac with the proximal part bent anteromedially; vagina posterior to the cirrus-sac; and cortical vitelline follicles. Milanella most closely resembles Bathycestus Kuchta and Scholz, 2004, Pistana Campbell and Gartner, 1982, and Probothriocephalus Campbell, 1979, differing mainly in the shape of proglottids and uterine sac.

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The phylogeny of diphyllobothriid tapeworms (Cestoda: Pseudophyllidea) based on ITS-2 rDNA sequences

Cited by 33 publications

References 27 publications

Genetic diversity ofLigula intestinalis(Cestoda: Diphyllobothriidea) based on analysis of inter-simple sequence repeat markers

Genetic diversity ofLigula intestinalis(Cestoda: Diphyllobothriidea) based on analysis of inter-simple sequence repeat markers

Update on the Human Broad Tapeworm (GenusDiphyllobothrium), Including Clinical Relevance

A New Triaenophorid Tapeworm from Blackfish Centrolophus niger

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