An unusual blood sequestering tapeworm (Sanguilevator yearsleyi n. gen., n. sp.) from Borneo with description of Cathetocephalus resendezi n. sp. from Mexico and molecular support for the recognition of the order Cathetocephalidea (Platyhelminthes: Eucestoda)

Caira, Janine N.; Mega, J. D.; Ruhnke, T. R.

doi:10.1016/j.ijpara.2005.03.014

Cited by 36 publications

(45 citation statements)

References 16 publications

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“…Also included in these analyses were 2 previously sequenced species of Acanthobothrium for which hologenophores and 28S rDNA data were available from GenBank: Acanthobothrium parviuncinatum Young, 1954 With respect to the selection of outgroups, the position of the genus Acanthobothrium within the larger framework of tetraphyllidean cestodes is unclear. The molecular work of Olson et al (2001), Caira et al (2005), and Healy et al (2009) suggests that the genus is most closely related to the Proteocephalidea, a relatively speciose order of tapeworms parasitic primarily in freshwater teleosts, but also in some amphibians and reptiles. Thus, the outgroup consisted of 3 species representing some of the more basal lineages of proteocephalideans, as determined by Zehnder and Mariaux (1999) and de Chambrier et al (2004), for which comparable data were available from GenBank.…”

Section: Molecular Datamentioning

confidence: 99%

“…A portion of the nuclear large subunit 28S rDNA (D1-D3; ~1,300 nucleotides) gene was selected based on its previous established utility in resolving interspecific phylogenetic relationships in other cestode groups (e.g., Zehnder and Mariaux 1999, Olson et al 2001, de Chambrier et al 2004, Caira et al 2005, Waeschenbach et al 2007. DNA was extracted from the midsection of worms preserved in 95% ethanol and the terminal proglottid(s) and scolex of each was prepared as a whole mount to serve as a voucher for the specimens from which sequence data were generated.…”

Section: Molecular Datamentioning

confidence: 99%

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Five new species of Acanthobothrium (Cestoda: Tetraphyllidea) from an unusual species of Himantura (Rajiformes: Dasyatidae) from northern Australia

Fyler¹,

Caira²,

Jensen³

2009

FOLIA PARASIT

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Abstract:Five new species of Acanthobothrium van Beneden, 1850 from the spiral intestine of a specimen of an unusual species of Himantura from the Arafura Sea off northern Australia are described. Acanthobothrium oceanharvestae sp. n. is one of 26 category 1 species (sensu Ghoshroy and Caira 2001) lacking post-ovarian testes; it differs from these in total length, number of proglottids, number of testes, cirrus sac size and details of the terminal genitalia. Acanthobothrium popi sp. n. is unique among category 2 species in its possession of post-ovarian testes. Acanthobothrium rodmani sp. n. is a category 6 species distinct from all congeners in the dense blade-like spinitriches on the distal surfaces of its anterior-most bothridial loculi and conspicuously tapered posterior bothridial margins, which are reflexed anteriorly. Acanthobothrium romanowi sp. n. differs from most other category 1 species in that its genital pore is distinctly posterior. It differs from the remaining category 1 species in size, testis number, cephalic peduncle microthrix form, proglottid shape, and bothridial loculus dimensions. Acanthobothrium zimmeri sp. n. is among the six category 1 species with post-ovarian testes. It differs from these species in total length, ovary shape, number of proglottids and testes and vas deferens extent. This brings the number of Acanthobothrium species with post-ovarian testes to 10, all of which are Indo-Pacific in distribution, and 7 of which parasitize Himantura species. A key to the five new species parasitizing Himantura sp. is provided. Sequence data for the D1-D3 region of 28S rDNA for the five new species and two congeners parasitizing other Himantura species shows no intraspecific variation. Analysis of these and comparable data for two species available in GenBank (Acanthobothrium parviuncinatum and Acanthobothrium sp. 1) showed an interspecific variation of 0.7-11.3% among species pairs. Bayesian, Likelihood and Parsimony phylogenetic analyses of these data for these nine species indicate that the five new species parasitizing Himantura sp. are generally not each others' closest relatives.

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Section: Molecular Datamentioning

confidence: 99%

Section: Molecular Datamentioning

confidence: 99%

Five new species of Acanthobothrium (Cestoda: Tetraphyllidea) from an unusual species of Himantura (Rajiformes: Dasyatidae) from northern Australia

Fyler¹,

Caira²,

Jensen³

2009

FOLIA PARASIT

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“…In fact, they justified their inclusion by the scolex morphology, the presence of gladiate spinitriches on the cephalic peduncle and the host. The monophyly of the Proteocephalidea has been confirmed Mariaux 1999, de Chambrier et al 2004a), whereas the Onchobothriidae was found to be paraphyletic , Caira et al 2005, Waeschenbach et al 2007. In this line of reasoning, the molecular-based phylogenetic analysis should encompass all the genera of this family, and the possible inclusion of each genus in the proposed new order should be made after the molecular study rather than before.…”

Section: Discussionmentioning

confidence: 90%

“…, Waeschenbach et al 2007) and thus was split into three orders: Litobothriidea Dailey, 1969, Cathetocephalidea Schmidt et Beverigde, 1990and Rhinebothriidea Healy, Caira, Jensen, Webster et Littlewood, 2009(Dailey 1969, Schmidt and Beveridge 1990, Olson and Caira 2001, Caira et al 2005, Healy et al 2009). Each of these orders was erected on the basis of both molecular and morphological data, and showed at least a single unifying synapomorphy for the whole group.…”

Section: Discussionmentioning

confidence: 99%

A new species of Pseudocrepidobothrium (Cestoda: Proteocephalidea) from Pseudoplatystoma reticulatum (Pisces: Siluriformes) in the Paraná River basin (Argentina)

Arredondo¹,

Pertierra²,

Chambrier³

2014

FOLIA PARASIT

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“…Finally, Caira et al (1999) questioned whether the Cathetocephalidae and the Disculicipitidae represented two different families. More recent molecular data (Caira et al 2005) corroborated the recognition of the order Cathetocephalidea erected by Schmidt and Beveridge (1990). According to the molecular analysis of Olson et al (2001) the Tetraphyllidea are separated in four groups: the Rhinebothri-*Corresponding author: jordimiquel@ub.edu Abbreviations to all figures: AC -apical cone, AM -arched membranes, ASE -anterior spermatozoon extremity, Ax -axoneme, Ax1 -first axoneme, Ax2 -second axoneme, C -centrioles, C1 -first centriole, C2 -second centriole, CB -crested body, CM -cortical microtubules, D -doublets, F -flagellum, F1 -first flagellum, F2 -second flagellum, G -granules of glycogen, IB -intercentriolar body, MCP -median cytoplasmic process, N -nucleus, PM -plasma membrane, PSE -posterior spermatozoon extremity, S -singlets, SR -striated rootlets inae, the Phyllobothriidae, the Onchobothriidae and the genus Acanthobothrium.…”

Section: Introductionmentioning

confidence: 99%

Spermatological characters of Acanthobothrium crassicolle Wedl, 1855 (Tetraphyllidea, Onchobothriidae), a parasite of the common stingray Dasyatis pastinaca

Marigo¹,

Eira²,

Bâ

et al. 2011

Acta Parasitologica

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We describe the spermiogenesis process and the ultrastructural characters of the spermatozoon of Acanthobothrium crassicolle by means of transmission electron microscopy, including cytochemical analysis for glycogen. Spermiogenesis in A. crassicolle begins with the formation of the differentiation zone that contains two centrioles associated with striated rootlets and an intercentriolar body. The latter is formed by one electron-dense layer. The centrioles develop into two free flagella that first grow orthogonally to a median cytoplasmic process and then undergo flagellar rotation becoming parallel to that median cytoplasmic process. After flagellar rotation only one of the flagella completes its growth and both short and long flagella undergo proximodistal fusion with the median cytoplasmic process. In the final stages of spermiogenesis, the nucleus becomes filiform and migrates into the spermatid body. Later, the ring of arched membranes constricts and the spermatozoon is liberated from the residual cytoplasm. The ultrastructural organization of the spermatozoon of A. crassicolle follows the general pattern of spermatozoa of the other Tetraphyllidea-Onchobothriidae species, but exhibits some differences. It is filiform, tapered at both extremities and lacks mitochondrion. It contains two axonemes of unequal length showing the 9 + "1" pattern of Trepaxonemata, a nucleus, parallel cortical microtubules and electron-dense granules of glycogen. The anterior extremity of the male gamete contains a single crested body surrounding a thin and long apical cone. This type of apical cone has never been described in a tetraphyllidean spermatozoon. Another particularity is the presence of a single electron-dense microtubule at the vertex of the crested body.

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An unusual blood sequestering tapeworm (Sanguilevator yearsleyi n. gen., n. sp.) from Borneo with description of Cathetocephalus resendezi n. sp. from Mexico and molecular support for the recognition of the order Cathetocephalidea (Platyhelminthes: Eucestoda)

Cited by 36 publications

References 16 publications

Five new species of Acanthobothrium (Cestoda: Tetraphyllidea) from an unusual species of Himantura (Rajiformes: Dasyatidae) from northern Australia

Five new species of Acanthobothrium (Cestoda: Tetraphyllidea) from an unusual species of Himantura (Rajiformes: Dasyatidae) from northern Australia

A new species of Pseudocrepidobothrium (Cestoda: Proteocephalidea) from Pseudoplatystoma reticulatum (Pisces: Siluriformes) in the Paraná River basin (Argentina)

Spermatological characters of Acanthobothrium crassicolle Wedl, 1855 (Tetraphyllidea, Onchobothriidae), a parasite of the common stingray Dasyatis pastinaca

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