Sobre os filarideos dos crocodillos sul-americanos

Travassos, Lauro

doi:10.1590/s0074-02761933000200007

Cited by 11 publications

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“…They agreed with the description of Travassos (1933a), except that they were not conspicuously striated. The males agreed with Travassos' description, except that no caudal alae were observed (the male tail measurement given by Travassos should probably be 0.08 not 0.8 mm).…”

Section: Brevimulticaecum Baylisisupporting

confidence: 77%

Ascaridoid nematodes of amphibians and reptiles: Multicaecum and Brevimulticaecum

Sprent

1979

J. Helminthol.

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The genus Multicaecum Baylis 1923, sensu Hartwich 1957, was found to be heterogeneous, comprising species which are relegated to two distinct genera, namely Multicaecum Baylis, 1923 and Brevimulticaecum. The latter name is derived from the subgenus Brevimulticaecum Mozgovoy, in Skrjabin, Shikhobalova, and Mozgovoy, 1951 by raising it to generic rank and emending the definition. Multicaecum contains a single species, agile Wedl, 1861 occurring in Crocodylus spp. in Africa, India and Australia, and is characterized by smooth rounded lips, each with a dentigerous ridge comprising small sharp denticles. The excretory pore is level with the nerve ring or behind it, and the ventricular appendices are long and slender. The species gangeticum Maplestone 1930 and quadrata Linstow 1904 are excluded from Multicaecum and regarded as species inquirendae incertae sedis. Brevimulticaecum contains five species occurring in the caimans and the alligator of the New World: baylisi Travassos, 1933 (type species; acuticauda Schuurmans-Stekhoven, 1937 is placed in synonomy under baylisi); stekhoyeni Baylis, 1947; tenuicolle Rudolphi, 1819; and two new species. Brevimulticaecum spp. are characterized by flat lips with alate margins and notches, without dentigerous ridges, excretory pore in front of or at nerve ring and the ventriculus with short appendices. The significance of this proposal is discussed in relation to the other genera of ascaridoid nematodes in crocodilians.

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Section: Brevimulticaecum Baylisisupporting

confidence: 77%

Ascaridoid nematodes of amphibians and reptiles: Multicaecum and Brevimulticaecum

Sprent

1979

J. Helminthol.

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“…Considering the present data, the neotropical region displays the highest diversity of Oswaldofilaria parasitic in Sauria (Vicente et al,1993 Travassos (1933). * in Prod'hon & Bain (1972).…”

Section: Discussionmentioning

confidence: 53%

“…Befilaria is very close to Oswaldofilaria, but is retained because of the smaller oesophagus size; however, the length limit is  1,400 in females instead of 1,000 as reported previously (Bain et al, 1982). in the genus Oswaldofilaria, species parasitic in Crocodylidae from africa (Bain et al, 1982), South america (Travassos, 1933;marinkelle, 1981) and australia (manzanell, 1986) all have a long oesophagus and can be considered primitive (Table ii). in australia, as underlined by manzanell (1986), the single Oswaldofilaria from a crocodile is well distinct from the four species parasitic in agamidae. The male oesophagus of the latter is less than 2,500 long, and some of them have additional derived characters, such as the laterally flattened buccal capsule and a gubernaculum in O. chlamydosauri; the left spicule is transformed into a tube in the distal half in O. samfordensis (cf.…”

Section: Discussionmentioning

confidence: 54%

“…all filariae from Crocodylia and a part of those from Sauria (lizards) belong Mémoire Parasite, 2010, 17, 307-318 to this subfamily. Oswaldofilaria Travassos, 1933 has a gondwanian-type geographical distribution and is represented by thirteen species, including the four parasitic in crocodilians (Travassos, 1933;marinkelle, 1981;Bain et al, 1982;manzanell, 1986). Befilaria Chabaud, anderson & Brygoo, 1959 comprises three species in the ethiopian region (Chabaud et al, 1959;Bain & ranque, 1974;Gibbons, 1989) and one in the neotropical region (Bain & Chaniotis, 1975).…”

Section: Introductionmentioning

confidence: 99%

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Oswaldofilaria chabaudin. sp. (Nematoda: Onchocercidae) from a South American tropidurid lizard (Squamata: Iguania) with an update on Oswaldofilariinae

Pereira

Lima

Bain³

2010

Parasite

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Summary:A new species of Oswaldofilaria is described from Tropidurus torquatus (Tropiduridae: Iguania); its prevalence at the rocky study area at Juiz de Fora, Minas Gerais, Brazil, was approximately 30 % and its mean intensity 3.13 ± 2.51. Oswaldofilaria chabaudi n. sp. is distinct from the thirteen Oswaldofilaria species known in Australia, Africa and South-America in having the following characteristics: oesophagus medium-sized, left spicule 1 mm long and high spicular ratio (about 5), tail extremity ornated in both sexes with a bifurcated projection, and tooth-like structures near phasmids in the female. A long left spicule and high spicular ratio are convergent derived characters also found in a parasite of Australian crocodilians, O. kanbaya, and in several species of the closely related genus Befilaria, such as the Central American B. puertoricensis from polychrotids. Oswaldofilaria in South America is represented by eight species. Within these, a primitive group that is parasitic in Iguanidae, Polychrotidae (Iguania) and Crocodylidae and that possesses a long oesophagus is recognised, together with two distinct derived lines: three species with numerous, aligned precloacal papillae, parasitic in Teiidae (Laterata) and Scincidae (Scincomorpha), and O. chabaudi n. sp., in which this character is absent. Tropidurids (Tropiduris and Plica) had previously been reported in the host range of two oswaldofilarine genera, Oswaldofilaria and Piratuba, and their parasites assigned to known species described from other groups of lizards.

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“…Only 6 cephalic papillae were reported in the original descriptions also for M. vazi, M. indica, and M. trionyxi (Travassos, 1933;Khera, 1951;Agrawal, 1966), but Siddiqi and Jairajpuri (1963) mentioned 14 cephalic papillae in 2 circles and a pair of lateral amphids in M. indica; the number of cephalic papillae in M. lissemysia was not established. However, the cephalic papillae in this nematode group are poorly visible under the light microscope, and as mentioned by Moravec et al (1998) for philometrids, the only reliable method of studying these papillae is SEM.…”

Section: Discussionmentioning

confidence: 99%

Micropleura Australiensis N. Sp. (Nematoda: Micropleuridae) From the Body Cavity of Crocodylus Johnsoni in Western Australia

Moravec

Kay

Hobbs

2004

Journal of Parasitology

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A new nematode species, Micropleura australiensis n. sp., is described on the basis of specimens found in the peritoneal cavity of the Australian freshwater crocodile, Crocodylus johnsoni Krefft, from the Ord River area, Western Australia. The new species is mainly characterized by the length of spicules (0.360-0.366 mm) and gubernaculum (0.096-0.105 mm), the number and arrangement of male caudal papillae (4 preanal and 6 postanal pairs), and the postequatorial vulva. To date, it is the first species of Micropleura reported from Australia. Micropleura trionyxi Agrawal, 1966, and M. lissemysia Chattervati, 1985, are considered junior synonyms of M indica Khera, 1951. From June to October of 2002, 30 Australian freshwater crocodiles, Crocodylus johnsoni Krefft, 1873, originating from the Ord River area, Western Australia, were examined by W. Kay as a part of a dichloro-diphenyl-trichloro-ethane study. While extracting liver and fat tissues, nematode specimens were opportunistically collected from the peritoneal cavity of these animals. A detailed study of their morphology shows that they represent a new species of the dracunculoid genus Micropleura Linstow, 1906, described below. MATERIALS AND METHODSA total of 30 specimens of C. johnsoni were examined: 10 animals from the lower Ord River, 10 from the Ord River Irrigation Area Drain 4, and 10 from the upper Ord River at the southern end of Lake Argyle. The nematodes were occasionally collected from their peritoneal cavity. They were fixed in 10% formaldehyde solution and cleared with glycerine for examination. Drawings were made with the aid of a Zeiss microscope drawing attachment. After examination, the specimens were briefly placed in 4% formaldehyde solution and then transferred to 70% ethanol, in which they were stored. For scanning electron microscopy (SEM), body fragments of 2 females were postfixed in 1% osmium tetroxide, dehydrated through a graded alcohol series, critical point dried, and sputter coated with gold. They were examined with a JSM-6300 scanning electron microscope at an accelerating voltage of 15 kV. All measurements are given in millimeters unless otherwise stated. The scientific names of reptiles are according to Uetz et al. (2002). DESCRIPTION Micropleura australiensis n. sp. (Figs. 1-3) General: Body white, elongate, tapering to both ends. Cuticle thin, with very fine transverse striations; body surface bearing numerous small, elongate cuticular inflations or bosses with minute papillalike formations on their upper side. Cephalic end rounded. Oral aperture small, circular, surrounded by a rather wide, slightly elevated ring of cuticle; inner margin of oral aperture appearing to be provided with numerous small papillalike formations. Cephalic papillae small, 14 in number, arranged in 2 circles: outer circle formed by 4 submedian pairs of papillae, inner circle by 4 single papillae forming 1 dorsal pair, 1 ventral pair, and a pair of larger lateral papillae; small lateral amphids posterior to lateral papillae. Small conical deiri...

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Sobre os filarideos dos crocodillos sul-americanos

Cited by 11 publications

References 0 publications

Ascaridoid nematodes of amphibians and reptiles: Multicaecum and Brevimulticaecum

Ascaridoid nematodes of amphibians and reptiles: Multicaecum and Brevimulticaecum

Oswaldofilaria chabaudin. sp. (Nematoda: Onchocercidae) from a South American tropidurid lizard (Squamata: Iguania) with an update on Oswaldofilariinae

Micropleura Australiensis N. Sp. (Nematoda: Micropleuridae) From the Body Cavity of Crocodylus Johnsoni in Western Australia

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