Ophiotaenia bungari n. sp. (Cestoda), a parasite of Bungarus fasciatus (Schneider) (Ophidia: Elapidae) from Vietnam, with comments on relative ovarian size as a new and potentially useful diagnostic character for proteocephalidean tapeworms

Chambrier, Alain de; Binh, Tran Thi; Scholz, Tomáš

doi:10.1007/s11230-011-9320-0

Cited by 30 publications

(7 citation statements)

References 11 publications

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“…Results from two former studies (Ammann and de Chambrier 2008, de Chambrier et al 2012) are verified here in the context of a larger dataset covering more genera and subfamilies. We can conclude that the ratio of the ovary surface to the proglottid surface in mature proglottids largely corresponds to major host groups and thus represents a promising character of possible phylogenetic importance that should be routinely reported in future descriptions or redescriptions of proteocephalidean taxa (for methodology of taking this ratio – see de Chambrier et al 2012). However, patterns in the relative size of the ovary of species from different host groups discussed above are not universal and notable exceptions exist.…”

Section: Discussionsupporting

confidence: 65%

“…They are morphologically uniform and do not differ significantly from the other species of Ophiotaenia in Clade K , as all of them have a similar scolex and strobilar morphology, including relative ovary size (see de Chambrier et al 2012 and Table 1). However, members of the larger radiation ( Clade K ) have a Type 1 uterus whereas those in the other clades have a Type 2 uterus.…”

Section: Discussionmentioning

confidence: 99%

“…In their study, this ratio was on average five times lower in 27 species of Ophiotaenia from snakes in the New World compared to Palearctic members of the Proteocephalus aggregate from teleosts. More recently, de Chambrier et al (2012) compared 66 of the nominal species of Ophiotaenia from Old and New World reptilian hosts with 69 species of Proteocephalus from freshwater teleosts. They noted that the ovaries of species parasitic in non-Palearctic snakes are proportionally smaller than those in species of Proteocephalus parasitic in teleost fishes from all over the world and also considerably smaller than that of congeneric species from European hosts.…”

Section: Discussionmentioning

confidence: 99%

“…The relative size of the ovary, i.e. the ovary to proglottid surface ratio, was calculated for each species according to the method described in de Chambrier et al (2012). Approximate values might be due to inaccurate drawings or fixation methods reported by the original authors.…”

Section: Methodsmentioning

confidence: 99%

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A large 28S rDNA-based phylogeny confirms the limitations of established morphological characters for classification of proteocephalidean tapeworms (Platyhelminthes, Cestoda)

Chambrier¹,

Waeschenbach²,

Fisseha³

et al. 2015

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Proteocephalidean tapeworms form a diverse group of parasites currently known from 315 valid species. Most of the diversity of adult proteocephalideans can be found in freshwater fishes (predominantly catfishes), a large proportion infects reptiles, but only a few infect amphibians, and a single species has been found to parasitize possums. Although they have a cosmopolitan distribution, a large proportion of taxa are exclusively found in South America. We analyzed the largest proteocephalidean cestode molecular dataset to date comprising more than 100 species (30 new), including representatives from 54 genera (80%) and all subfamilies, thus significantly improving upon previous works to develop a molecular phylogeny for the group. The Old World origin of proteocephalideans is confirmed, with their more recent expansion in South America. The earliest diverging lineages are composed of Acanthotaeniinae and Gangesiinae but most of the presently recognized subfamilies (and genera) appear not to be monophyletic; a deep systematic reorganization of the order is thus needed and the present subfamilial system should be abandoned. The main characters on which the classical systematics of the group has been built, such as scolex morphology or relative position of genital organs in relation to the longitudinal musculature, are of limited value, as demonstrated by the very weak support for morphologically-defined subfamilies. However, new characters, such as the pattern of uterus development, relative ovary size, and egg structure have been identified, which may be useful in defining phylogenetically well-supported subgroups. A strongly supported lineage infecting various snakes from a wide geographical distribution was found. Although several improvements over previous works regarding phylogenetic resolution and taxon coverage were achieved in this study, the major polytomy in our tree, composed largely of siluriform parasites from the Neotropics, remained unresolved and possibly reflects a rapid radiation. The genus Spasskyellina Freze, 1965 is resurrected for three species of Monticellia bearing spinitriches on the margins of their suckers.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%