Contributions to the genus <i>Paradilepis</i> Hsü, 1935

Mahon, June

doi:10.1017/s0031182000027438

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…While epiphyseal thickenings are clearly a distinctive feature of some gryporhynchid genera (e.g. Cyclustera and Glossocercus ; Scholz & Salgado-Maldonado, 2001; Scholz et al , 2002) they are illustrated only sporadically in the literature for Paradilepis (Baer & Bona, 1960; McLaughlin, 1974; Scholz & Salgado-Maldonado, 2001; Scholz et al , 2002) and mentioned in the text on only one occasion (the ‘flattened, rounded appendages’ of Mahon, 1955). This is undoubtedly because, in this genus, the thickenings are very fine and difficult to observe.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Adult cestodes of the genus Paradilepis are almost entirely confined to pelicaniform birds, in many cases cormorants (Freeman, 1954; Mahon, 1955; Clark, 1957). Species have also been reported from other pelicaniform (spoonbills, pelicans, ibis, herons) and accipitriform (kites and osprey) hosts (Mayhew, 1925; Freeman, 1954; Mahon, 1955; Khalil, 1961; McLaughlin, 1974; Ryzhikov et al , 1985; Ortega-Olivares et al , 2008). Metacestodes of Paradilepis inhabit a wide range of fish orders as second intermediate hosts: Acipenseriformes, Antheriniformes, Cypriniformes, Esociformes, Gasterosteiformes, Perciformes, Salmoniformes, Scorpaeniformes and Siluriformes (Ching, 1982; Ryzhikov et al , 1985; Scholz & Salgado-Maldonado, 2001; Scholz et al , 2004).…”

Section: Introductionmentioning

confidence: 99%

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First report of a gryporhynchid tapeworm (Cestoda: Cyclophyllidea) from New Zealand and from an eleotrid fish, described from metacestodes andin vitro-grown worms

2011

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Metacestodes are often found in the body cavity of the common bully (Gobiomorphus cotidianus McDowall), from freshwater habitats in Otago, New Zealand. Identification of metacestodes relies only on the number, size and shape of the rostellar hooks. To attempt species determination, we cultivated metacestodes in vitro for up to 23 days, during which they matured to at least the male stage of development, although female organs were not discernable. Identified as members of the genus Paradilepis Hsü, 1935 (family Gryporhynchidae), these specimens are compared to previously described species, in particular P. minima (Goss, 1940), from Australia, the closest species, both geographically and morphologically. Although the size of scolex, suckers and proglottids differ significantly from those of P. minima, we are cautious about interpreting 'adults' grown in vitro, because we are unsure whether the artificial conditions alter development. For this reason, and because of the lack of female organs, we refrain from erecting a new species, and refer to the specimens as Paradilepis cf. minima until such time as the adults are found in the definitive host. With this proviso we present here a description of the in vitro-grown worms and the metacestodes as a preliminary study of this cestode. A molecular analysis of small subunit (SSU) rDNA sequences, shows the position of P. cf. minima and another gryporhynchid, Neogryporhynchus cheilancristrotus (Wedl, 1855), to be equivocal, but confirms their exclusion from the Dilepididae and Hymenolepididae. This is the first record of a gryporhynchid from New Zealand, and the first from the fish family Eleotridae.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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First report of a gryporhynchid tapeworm (Cestoda: Cyclophyllidea) from New Zealand and from an eleotrid fish, described from metacestodes andin vitro-grown worms

2011

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“…Mais pourvus d'un rostre à deux couronnes de crochets parfois dissemblables, d'un vas deferens long et contourné, dépourvus par contre de vésicule séminale externe, ils ne répondent pas à la définition de la famille précitée, mais à celle des Dilépididés et au genre Paradilepis Hsu, 1935. Successivement, Joyeux et Baer, 1950, Neiland, 1952, Freeman, 1954, Mahon, 1955, Baer et Bona, 1958-1960, Mathevossian, 1959 ont fait le point de ces inexactitudes et les ont corri gées : Oligorchis burnamensis Johri, 1941 (1), O. hierticos Johri, 1934(2), O. longivaginosus Mayhew, 1925, O. yorkei (Kotlan, 1923 Baer, 1925, et O. strangulatus Fuhrm., 1906 (Meggitt, 1927).…”

Section: Discussionunclassified

Hymenolepididae (Cestoda) des Charadriiformes des Côtes de France. Validité du genre Oligorchis (Fuhrm. 1906) et description d’Hymenolepis longocylindrocirrus n. sp.

Deblock¹,

Rose²

1964

Ann. Parasitol. Hum. Comp.

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Crochets (fig. 1 C). Une couronne de 10 crochets chéliformes de 15 µ X 7,5-8 µ (10 µ parfois) de hauteur. La lame est de même longueur que la garde et parallèle à celle-ci ; le manche, pratiquement inexistant. Cou. Long de 310 p X 200 p de large. Système excréteur. Une paire de canaux longitudinaux non anastomosés transversalement, ventraux par rapport aux conduits génitaux. De diamètre très inégal (6 p et 50 p) ; les vaisseaux dorsaux possèdent des parois qui les individualisent plus nettement dans les anneaux âgés. Le système excréteur du scolex est souvent bien visible. Système musculaire longitudinal. Même disposition que chez certains Hymenolepis s. l. 1) Musculature externe : formée d'une trentaine de petits faisceaux, sur chacune des faces de la chaîne, de 5-6 p de diamètre. 2) Musculature interne formée d'une quinzaine de faisceaux plus importants sur chacune des faces du Cestode, de 20 p de diamètre, issus de 2 X 3 faisceaux volumi neux toujours bien visibles qui divergent à partir du sac du rostre pour se dichotomiser rapidement au niveau du cou. Atrium génital. Unilatéral, dextre, inerme, tubulaire, court (25-30 p), dépourvu de sacculus et d'épines, il est situé au niveau du 2e quart antérieur du bord des proglottis. Anneaux. Toujours trapézoïdaux, beaucoup plus larges que longs dans la totalité du strobile. Rapport longueur/largeur = 1/3 ou 1/4 dans anneaux relâchés et jusqu'à 1/10e dans anneaux contractés. Un strobile compte : 200 anneaux de cou et immatures, 100 anneaux mâles, 50 anneaux hermaphrodites mûrs, 120 anneaux gravides, dont 10 à oeufs mûrs, nettement plus étroits et plus allongés que les autres. 1) Anneaux immatures. Le massif embryonnaire des glandes femelles (ovaire, vitellogène) apparaît le plus précocement, dans l'axe du strobile ou décalé très légèrement du côté poral, mais tou

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“…These are : P. scolecina (Rudolphi, 1819) ; P. urceus (Wedl, 1855) ; and P. minima (Goss, 1914). Mahon, 1955, as a synonym of P. scolecina. Clark (1957), disagreed with Mahon and showed that the material examined by Goss contained two species one of which is identified as P. scolecina, and the other as P. minima.…”

Section: Discussionmentioning

confidence: 99%

On a New Cestode, Paradilepis maleki sp. nov. (Diplepididae), from a Sacred Ibis in the Sudan

Khalil

1961

J. Helminthol.

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Contributions to the genus Paradilepis Hsü, 1935

Cited by 6 publications

References 3 publications

First report of a gryporhynchid tapeworm (Cestoda: Cyclophyllidea) from New Zealand and from an eleotrid fish, described from metacestodes andin vitro-grown worms

First report of a gryporhynchid tapeworm (Cestoda: Cyclophyllidea) from New Zealand and from an eleotrid fish, described from metacestodes andin vitro-grown worms

Hymenolepididae (Cestoda) des Charadriiformes des Côtes de France. Validité du genre Oligorchis (Fuhrm. 1906) et description d’Hymenolepis longocylindrocirrus n. sp.

On a New Cestode, Paradilepis maleki sp. nov. (Diplepididae), from a Sacred Ibis in the Sudan

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