OSLERUS OSLERI(COBBOLD, 1876) INFECTION IN MANED WOLF (CHRYSOCYON BRACHYURUS, ILLIGER, 1815)

Abstract

Oslerus osleri is a small nematode that infects the respiratory tract of domestic and wild canids and is responsible for causing chronic nodular tracheobronchitis. This paper aims to report a case of parasitism by O. osleri in a free-living maned wolf (Chrysocyon brachyurus) that was struck by a motor vehicle. Fecal samples were collected, and the presence of spiral larvae, with "S"-shaped tails, was observed on flotation. This characteristic was compatible with the Filaroididae Family larvae of O. osleri. Although the animal did not show clinical signs of respiratory system impairment, a tracheobronchoscopy was performed. Semitransparent nodules, 5 mm in diameter, containing adult parasites were observed in the third distal portion of the trachea, cranial to the carina. Larval morphological characteristics and the nodular locations were compatible with an O. osleri respiratory tract infection.

Morphological and molecular evidence of Oslerus osleri (Nematoda: Filaroididae) in the Andean fox (Lycalopex culpaeus)

“…Oslerus osleri is a ubiquitous parasite recorded in many geographical parts of Europa, Asia, Africa, America, and Australia (Kontrimavichus and Deliamure, 1985;Yao et al, 2011). This nematode has been found parasitizing the trachea and bronchi of many canid species, mainly coyotes and wolves (Dias et al, 2012;Kontrimavichus and Deliamure, 1985;Yao et al, 2011), causing tracheobronchial and granulomatous nodule formation (Conboy, 2009) like in this report (Fig. 1).…”

First autochtonous infection of a dog with Oslerus (Filaroides) osleri in the Czech Republic

“…O. osleri is a parasite found in the trachea and bronchi of dogs, as well as wild canid species, such as dingoes (Dunsmorre and Spratt, 1979), coyotes (Thornton et al, 1974;Carlson and Nielsen, 1985), wolves (Dias et al, 2012;Verocai et al, 2013) and foxes (Deli c´ et al, 1966;Dunsmorre and Spratt, 1979;Avelar et al, 2013), and has a worldwide distribution. However, wild canids do not seem to serve as an infection reservoir for dogs, as dogs exposed to infective larvae derived from coyotes failed to develop O. osleri infections (Foreyt and Foreyt, 1981).…”

Parasitic nematodes of three species of wild carnivore mammals from Atlantic forest in the state of Minas Gerais, Brazil

“…Olerus (Oslerus) osleri (Cobbold, 1879) is reported in wild and domestic canids in Europe, North America, Africa, Asia and Oceania (Dunsmore & Spratt, 1979;Hare, 1930;Kotani et al, 1995;Ortlepp, 1945). However, reports of this nematode in South America are scarce, restricted to domestic dogs from Chile (Alcaíno & Gorman, 1999;Muñoz, Fredes, Faúndes, Sanz, & Gonzáles, 2007), and C. brachyurus from Brazil (Dias et al, 2012). However, this last report is doubtful because it was only based on clinical and coprological diagnosis of larval parasites.…”