Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “FILARIOIDEA”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 91 records · Page 5Linked to original sources
PubMedDate not supplied

[Josefilaria mackerrasae gen. et sp. nov. (Nematoda: Filarioidea) a parasite of the ghost bat Macroderma gigas Dobson (author's transl)].

Josefilaria mackerrasae n. gen., n. sp., a filarial of the ghost bat Macroderma gigas in Australia is described. This filarioid has affinities with the genus Litomosa, but it can be separated by a variety of both more highly evolved characters (buccal capsule reduced to a pre-oesophageal ring; external lateral papillae absent) and primitive characters ("caudal alae" of the male, long and divided oesophagus, vulva not far from the nerve ring, numerous caudal mucrons of the female).

Animals↗
PubMed1982

Oswaldofilaria spp. (Filarioidea, Nematoda) in Australian agamid lizards with a description of a new species and a redescription of O. chlamydosauri (Breinl).

Oswaldofilaria samfordensis n.sp. is described from Physignathus lesueurii and a redescription of O. chlamydosauri (Breinl, 1913) from Chlamydosaurus kingii and Amphibolurus barbatus is given. O. pflugfelderi (Frank, 1964) is confirmed as a valid species. A key is added to separate the four Australian species in the genus. Gonocephalus boydii was recorded as a new host for O innisfailensis (Mackerras, 1962). A survey involving fifty specimens of P. lesueurii from South Queensland revealed that multiple infections with different filarioids are common and can include up to three different species in one individual animal. Pseudothamugadia physignathi (Johnston, 1912) (Splendidofilariinae) was the filarioid most frequently found, followed by O. Samfordensis and O. pflugfelderi

Animals↗
PubMed1983

Cercopithifilaria leporinus n. sp. (Nematoda: Filarioidea) from the snowshoe hare (Lepus americanus Erxleben) (Lagomorpha) in Canada.

Cercopithifilaria leporinus n. sp. from the subcutaneous tissues of the trunk of snowshoe hares (Lepus americanus Erxleben) in Ontario and Alberta, Canada, is described. This is the only species of Dipetalonema--like filarioid known from lagomorphs. It is distinguished from other species of Cercopithifilaria by its small size, numerous mucrons on the female tail, vulva leading into a large, spherical vestibule and the pattern of papillae on the male tail. Eight species of filarioids, representing four genera, are now known from lagomorphs. Dirofilaria timidi Gubanov and Fedorov, 1966 is considered as a species inquirenda.

Animals↗
PubMed1986

Elaeophora elaphi n. sp. (Filarioidea: Onchocercidae) parasite of the red deer (Cervus elaphus). With a key of species of the genus Elaeophora.

We described a new species of nematode filarioid (Onchocercidae) parasiting the hepatic vessels of the red deer Cervus elaphus. This new species is characterized by the number and disposition of the papillae on the genital area of the male, and the presence and characteristics of an "area rugosa" situated just in front of the ventral impair precloacal papilla. We discussed this new species, giving a key to the identification of all the known species of the genus Elaeophora.

Animals↗
PubMed1993

Strianema venezuelensis gen. et sp. n. (Filarioidea: Onchocercidae) from Venezuelan armadillos (Dasypus spp.).

A new filaria, Strianema venezuelensis gen. et sp. n., is described from armadillos in Venezuela. The adults inhabit the subcutaneous tissues and the microfilariae are found in the skin and occasionally the blood. The adults, which are of small size (males 9.6 to 13.8 mm in length by 57 to 63 microns in diameter, females 18.3 to 26.3 mm in length by 95 to 120 microns in diameter), have a distinctly striated cuticle. This filaria resembles most closely the genus Cercopithifilaria, from which it can be distinguished by the absence of a buccal capsule or pre-esophageal ring, and 11 to 13 pair of caudal papillae, three or four pair of which are separated as a group anterior to the cloaca. The species, S. venezuelensis, can be distinguished from the three other species of filariae described from armadillos by the undivided esophagus, number and distribution of caudal papillae in the male, size and shape of the spicules, and the distinctive microfilaria. The microfilaria, which averages 280 microns in length, has a unique, slender, almost filamentous tail.

Animals↗
PubMed1998

Cercopithifilaria shohoi n. sp. (Nematoda: Filarioidea) from the relict Bovidae, Capricornis crispus, in Japan.

Cercopithifilaria shohoi n. sp. was found in the relict bovid, Capricornis crispus, in Japan, and is described and compared with other species in the genus. Adult male and female worms were found in subcutaneous tissues of the trunks of 6 serows shot in Mt. Zao, Yamagata Prefecture, in the northern part of Honshu, the largest island of Japan. The one complete male found was 19.7 mm long, and the five females were 31.6-50.9 mm long. Unsheathed or sheathed microfilariae 104-122 microns long were taken from the females. One microfilaria was found in the sediment of the preservation solution of the tissues, but none were found in the blood of the infected serows, so microfilariae may be limited to the skin. Males of this species had one pair of papillae between perianal and subterminal groups of caudal papillae. In having this intermediate pair, C. shohoi n. sp. resembled species such as C. faini from an African bovid and C. rugosicauda from a European deer. From its morphological characteristics, C. shohoi n. sp. seems to be one of the more primitive species in the genus Cercopithifilaria.

Animals↗
PubMed2002

Diversification of Cercopithifilaria species (Nematoda: Filarioidea) in Japanese wild ruminants with description of two new species.

Twelve of the 17 Cervus nippon nippon deer from Kyushu Island, Japan, that we examined were infected with one or two Cercopithifilaria species. C. longa n. sp. adults were in the subcutaneous tissues of limbs and the abdomen, and C. crassa n. sp. adults were in the skin, mainly in the anterior part of the back; the distribution of the dermal microfilariae generally matched that of the adult worms. The two new species were assigned to the group of primitive Cercopithifilaria species that parasitize ruminants (bavids and cervids), but the new species could readily be distinguished from others morphologically. C. longa was more primitive and resembled C. bulboidea, one of the five species from the serow Capricornis crispus, a Japanese member of the Caprinae, and species from Bovidae in Africa. C. crassa had a thick body and large spicules like C. rugosicauda from Capreolus capreolus in Europe, the only previously known Cercopithifilaria species from cervids, but it also had one or two hypertrophied pairs of caudal papillae, an unusual character found so far only in Japanese parasites. Among the 12 species known from ruminants, four are African, one is European and more highly evolved, and seven are Japanese, with some being primitive and some more evolved. The great diversity of Cercopithifilaria species in the two wild ruminants that live in Japan seems to have resulted from local speciation, which occurred during the Pleistocene, from a primitive form of the C. longa type derived from Eurasiatic ancestors, which has disappeared or, more probably, not yet been discovered.

Animals↗
PubMed2003

Examination of type material of two species of Litomosoides (Filarioidea: Onchocercidae), parasites from bats; taxonomic consequences.

Type material of Litomosoides hamletti Sandground, 1934 from Glossophaga soricina soricina in Brazil and L. penai Jiménez-Quirós & Arroyo, 1960 from Carollia perspicillata azteca in Costa Rica, was examined. The morphology of the spicules shows that these species belong to the carinii group. Their synonymy with L. guiterasi Pérez Vigueras, 1934, from Artibeus jamaicensis yucatanicus in Cuba, does not appear justified because they are distinct in several characters (body length, width of female, size and shape of buccal cavity and capsule, shape of right spicule). L. hamletti is a valid species; L. penai is closely related to it and is considered to be a sub-species, L. hamletti penai Jiménez-Quirós & Arroyo, 1960. The material recovered from Glossophaga spp., previously assigned to L. guiterasi by several authors, is identified as L. h. hamletti. L. guiterasi appears to be closely related to L. chandleri Esslinger, 1973; L. chitwoodi n. sp. (= Litomosoides sp. Chitwood, 1938) seems close to these species; all three are parasites of Artibeus spp.

Animals↗
PubMed2004

Affinities between Cutifilaria (Nematoda: Filarioidea), parasites of deer, and Mansonella as seen in a new onchocercid, M. (C.) perforata n. sp., from Japan.

A new dermal filarioid nematode, collected from Cervus nippon nippon (sika deer) on Kyushu Island, Japan, showed close affinities between the genera Cutifilaria and Mansonella (Onchocercidae: Onchocercinae): no buccal capsule, esophagus reduced to a thin fibrous tube, and female tail with four lappets. We propose Cutifilaria as a subgenus of Mansonella. Cutifilaria was distinguished from the five other subgenera, Mansonella, Tetrapetalonema, Esslingeria, Sandnema, and Tupainema, in having an area rugosa composed of transverse bands with tiny points, 14-16 papillae around the cloacal aperture, two prominent rhomboidal subterminal papillae, and a thick right spicule with spoon-shaped distal extremity. The host range of Mansonella was extended to ungulates by the addition of Cutifilaria, which appears to be derived from Tupainema, parasitic in Tupaioidea (insectivores), because of the similarity in their right spicules; Cutifilaria seems to have an Asiatic origin. M. (C.) perforata n. sp. was distinct from the sole other related species, M. (C.) wenki, a parasite of Cervus elaphus (red deer) in Europe, having a more complex right spicule with a sturdy terminal point and microfilariae with a bifid posterior end. In addition, almost all females had cuticular pores near the vulva, on the ventral line. The prevalence of microfiloriae and adults of M. (C.) perforata in the skin of sika deer was 38% and 21%, respectively.

Animals↗
PubMed2006

First report of Litomosa spp. (Nematoda: Filarioidea) from Malagasy bats; review of the genus and relationships between species.

The presence of the filarial genus Litomosa in Malagasy bats is demonstrated by the finding of L. goodmani n. sp. from Miniopterus gleni and Litomosa sp. (male unknown) from M. manavi, both in the Special Reserve of Ankarana. These materials are compared to the 22 Litomosa species, including two Indian species originally placed in the genus Litomosoides, L. fotedari (Gupta and Trivedi, 1989) n. comb. and L. tewarii (Gupta and Trivedi, 1989) n. comb., and the new taxon L. seurati n. sp. (= L. beaucournui Bain, 1966 pro parte), type-host Rhinolophus ferrum-equinum, Algeria, distinguished by the narrow area rugosa and the female caudal extremity with two conspicuous points, instead of several small ones. The Malagasy material belongs to a group of species close to the type, L. filaria, which have a male area rugosa composed of cuticular bosses and microfilariae folded within the sheath, and which are parasitic in Vespertilionidae, Hipposideridae and Rhinolophidae from Africa and Europe. The two Malagasy species resemble L. seurati n. sp., L. beshkovi Jancev, 1971, L. chiropterum Ortlepp, 1932, L. adami Petit, 1980 and L. ottavianii Lagrange et Bettini, 1948, with the enlarged third segment of the buccal capsule. L. goodmani n. sp. is distinct with its small size and female caudal extremity with a single point, which is suppressed in old mature worms; the females of Litomosa sp. have two conical points. Relationships among Litomosa species appear to be dependent upon both the chiropteran host groups and the geographical region.

Animals↗
PubMed1991

Observations on third-stage larvae and adults of Litomosoides carinii (Nematoda: Filarioidea) by scanning and transmission electron microscopy.

The morphology of the body wall of the infective third-stage larvae and adults of Litomosoides carinii was studied by scanning and transmission electron microscopy. The mouth of both stages is surrounded by four inner papillae and two outer papillae; a pair of amphidial glands open laterally between the inner papillae. Female larvae and adults have two lateral caudal papillae; male larvae have a single ventral one, and adult males have two ventro-lateral lines of caudal papillae. The larval cuticle is two-layered, with fibres in the inner layer, whereas the adult cuticle has four layers apparently traversed by channels. Except for the chordal regions, larvae and adults both have an exceptionally thin hypodermis which is separated from both the cuticle and the underlying muscle cells by highly-convoluted membranes. The dorsal and ventral hypodermal chords contain nervous tissue, whereas the lateral hypodermis contains mainly mitochondria, golgi and micro-organisms. The muscle cells of larvae and adults contain thick and thin myofilaments arranged parallel to the long axis of the worms. In larvae each section has nine to 12 muscle cells, each of which has an inner non-sarcoplasmic zone containing the nucleus. The muscle cells of adult worms, although fewer in number, are more complex, and those of male worms in particular have lamellae which are deeply invaginated to form dense rectangular bands. Glycogen and lipid droplets are absent from larval muscle cells, whereas they are present in those of adult worms.

Animals↗
PubMed2026

Onchocercidae (Nematoda: Filarioidea) Infecting Colombian Avian Hosts: Insight From Morphotypes of Microfilariae and Molecular Lineages.

Members of the Onchocercidae family are parasites that infect a wide range of tetrapods, including wild birds and other animals. In Colombia, studies on avian blood parasites have diagnosed infections with microfilariae in several species using light microscopy. However, no morphological or molecular analyses of these nematodes have been conducted to date. The present study examined samples from 3820 wild birds with material deposited in the biological collection of the Host-Parasite Relationship Study Group since 1999. Of these individuals, 142 (3.7%) were infected with microfilaria and were analyzed using morphological and morphometric measurements. Additionally, 55 samples with blood or tissue preserved in ethanol were analyzed for sequencing of nuclear marker 18S rDNA and mitochondrial markers 12S rDNA and COI. Morphological analyses showed infection by at least one of 13 designed morphotypes of microfilariae. Twenty-nine sequences were obtained (10 of COI, 6 of 12S, and 13 of 18S), corresponding to 21 molecular lineages associated with Onchocercidae. These sequences were associated with the subfamilies Lemdaninae and Splendidofilariinae, the genera Aproctella Cram, 1931, Splendidofilaria Skrjabin, 1923, and Eufilaria Seurat, 1921, and other sequences did not cluster within any genus for which sequences were available for a particular molecular marker. These findings establish the first framework of morphological and molecular diversity of avian Onchocercidae in the megadiverse Neotropical country Colombia, expanding the known distribution of several genera and highlighting the need for further sampling of adult filariids to refine taxonomic resolution.

Animals↗