Oswaldocruzia(Trichostrongyloidea) parasites d’amphibiens des collections du Muséum de Paris

Abstract

Summ ar y : Oswaldocruzia (Trichostrongyloidea) parasites of amphibians from the collections of the Paris Museum. The Oswaldocruzia parasites of the intestines of amphibians in France are closely related and had been considered as one species, O. filiformis. However, a second species, O. bialata, is recognized by some authors because it has wider cervical alae. We found O. bialata to be present in Central Europe but not in France. An analysis of the synlophe indicates that a least four different species (therefore two new species) can be recognized, mainly by the morphology and the number of the crests corresponding to the cervical alae in front of the lateral fields. The basic shape of the spicules in the genus is constant and we propose the following nomenclature: the spicule is divided into 3 main branches, namely the externo-lateral branch or « blade », which divides into several processes, the interno-ventral branch or « fork », which splits into 2 slender branches and the interno dorsal branch or « shoe ». According to the morphological characteristics of the cuticular alae, the species can be distinguished as following: A. O. bialata (Molin, 1861) has semi-spherical, inflated cervical alae and no crests in oesophagal region. B. O. filiformis (Goeze, 1782) has cervical alae with three very small crests and has crests in oesophageal region. C. O. duboisi n. sp. has cervical alae with one big triangular and two small crests and has crests in oesophageal region. D. O. guyetanti n. sp. has triangular, inflated cervical alae with an apical spine and has only dorsal crests in oephageal region. With few exceptions, species of Oswaldocruzia from western Europe occur with low prevalence and low intensity. The names of the hosts that were written on the original labels and included with the parasites do not correspond to the current hostnomenclature. It is therefore difficult to determine both their pre cise geographical distribution and host-range.

Helminth endoparasites of the smooth newt Lissotriton vulgaris: linking morphological identification and molecular data

“…1c, d) and the absence of a gubernaculum (Travassos, 1937). Morphological features of the specimen corresponded to those of O. molgeta (Lewis, 1928; Barus & Groschaft, 1962), but also fell into the range of variability found in O. duboisi , O. filiformis and O. goezei (Moravec & Vojtková, 1975; Ben Slimane et al , 1993). As morphological diagnostic features have not yet been proposed to distinguish among these taxa, assignment of the examined specimen to any taxon remained unreliable.…”

“…two acanthocephalans: Acanthocephalus anthuris, A. ranae ; two cestodes: Batrachotaenia carpathica and Bothriocephalus claviceps ; 14 trematodes (metacercariae or adults): Alaria alata (a foodborne human pathogen), Astiotrema monticelli, A. trituri, Clinostomum complanatum, Diplodiscus subclavatus, Halipegus kessleri, Leptophallus nigrovenosus, Opistioglyphe ranae, Paralepoderma cloacicola, Parastrigea robusta, Pleurogenes claviger, Pleurogenoides medians, Strigea sphaerula and S. strigis ; and 13 nematodes: Agamospirura sp. larva, Amphibiocapillaria filiformis, A. tritonispunctati, Anguillicola crassus, C. longicauda, C. ornata , Hedruris androphora , Megalobatrachonema terdentatum , Oswaldocruzia duboisi, O. goezei, O. filiformis, O. molgeta and Oxysomatium brevicaudatum (Lewis, 1928; Grabda, 1959; Barus & Groschaft, 1962; Vojtková, 1963a, b; Avery, 1971; Vojtková & Vojtek, 1972; Moravec & Vojtková, 1975; Bertman & Okulewicz, 1987; Chumak, 1989; Scholz & Moravec, 1990; Ben Slimane et al, 1993; Iskova et al, 1995; Moravec & Skoríková, 1998, Shimalov et al, 2001; Shimalov, 2002; Caffara et al , 2014). Yet, helminth parasite diversity of smooth newts could turn out to be significantly lower because the list comprises taxa within the nematode genera Amphibiocapillaria and Oswaldocruzia which are morphologically indistinguishable (Moravec & Vojtková, 1975; Yildirimhan et al , 2005).…”

New Data on the Morphology and Distribution of Oswaldocruzia Skrjabini (Nematoda, Molineidae)

“…Oswaldocruzia skrjabini may be easily diff erentiated from all other Palaearctic species by structure of synlophe and male genital system. Oswaldocruzia bialata has the most similar synlophe structure (wide cervical alae and increased deirids), however it may be diff erentiated from O. skrjabini by the absence of extra branches on spicular fork and shoe, absence of extra branches on rays 10 of caudal bursa and absence of reduced papilla 1 cules was previously reported for the Palaearctic species O. guyetanti described by Durette-Desset et al (1993). Th at species is characterised by very similar spicular structure (blade ending in 4 processes, extra branches on fork and shoe), but the shoe process is short and divided into 3 tips in O. guyetanti diff erent for what we observed in O. skrjabini (the process is longer and bifurcated).…”

Les Nématodes Trichostrongylina parasites d'Amphibiens et de Reptiles: problèmes taxonomiques, phylétiques et biogéographiques

“…Molineoidea (Skrjabin & Schulz, 1937) Durette-Desset & Chabaud, 1993 Amphibiophilidae Durette-Desset & Chabaud, 1981 Amphibiophilinae Durette-Desset & Chabaud, 1981 Amphibiophilus Skrjabin, 1916 Wanaristrongylus Jones, 1987 Johnpearsoniinae Durette-Desset, Ben Slimane, Cassone, Barton & Chabaud, 1994 Johnpearsonia Durette-Desset, Ben Slimane, Cassone, Barton & Chabaud, 1994 Batrachonema Yuen, 1965 Molineidae (Skrjabin & Schulz, 1937) Durette-Desset & Chabaud, 1977 Molineinae Skrjabin & Schulz, 1937 Schulzia Travassos, 1937 Batrachostrongylus Yuen, 1963 Poekilostrongylus Schmidt & Whittaker, 1975 Trichoskrjabinia Travassos, 1937 Typhlopsia Barus & Otero, 1978 Kentropyxia Schmidt & Whittaker, 1975 Bakeria (Moravec & Sey,1986) stat. emend.…”

“…Ragenema n. g. Oswaldocruzia Travassos, 1917 Heligmosomoidea (Travassos, 1914) Durette-Desset & Chabaud, 1993 Herpetostrongylidae (Skrjabin et Schulz, 1937) Durette-Desset & Chabaud, 1981 Herpetostrongylus Baylis, 1931 Vaueherus Durette-Desset, 1980…”