The nematode worm Spirocerca lupi has a cosmopolitan distribution and can cause the death of its final canid host, typically dogs. While its life cycle, which involves a coprophagous beetle intermediate host, a number of non-obligatory vertebrate paratenic hosts and a canid final host, is well understood, surprisingly little is known about its transmission dynamics and population genetic struct...

The nonadult stages, egg strings, eggs, larvae, and cysts of Gordius robustus, Paragordius varius, and Chordodes morgani are described morphometrically. The goal was to document the differences between species and to evaluate the usefulness of morphometrics in species identification. In concert, multivariate analysis of variance (MANOVA) and univariate analysis of variance (ANOVA, a posteriori ...

caused by the larval form of an animal tapeworm of the genus Spirometra (1). The definite host is a carnivorous mammal, such as a dog or cat and intermediate hosts are a wide spectrum of vertebrates that include amphibians, reptiles, birds and mammals (2). Humans are usually a paratenic host (3). The route of infection is ingestion of raw meat of snakes or frogs, or drinking contaminated water ...

Angiostrongylus cantonensis is the most common etiological agent of eosinophilic meningitis. Adults are harbored in the pulmonary arteries of rats. Larvae develop within various natural (mollusks) and paratenic (snails...) hosts. After ingestion, larvae reach the human central nervous system where they cannot complete their life cycle. This zoonosis is usually seen in Southeast Asia and South P...

Based on light and electron microscopical studies, a new nematode parasite, Echinocephalus inserratus sp. n. (Spirurida: Gnathostomatidae), is described from the spiral valve of broad cowtail stingray Pastinachus ater (Macleay) (Dasyatidae, Myliobatiformes) off New Caledonia. The species morphologically biometrically most similar to overstreeti Deardorff et Ko, 1983, differing it mainly in abse...

Reptiles were known to serve as paratenic hosts for Centrorhynchus (Acanthocephala: Centrorhynchidae) in Korea, but the infection course in experimental animals was not elucidated yet. In this study, the tiger keelback snakes (Rhabdophis tigrinus) were collected and digested with artificial pepsin solution, and the larvae of Centrorhynchus were recovered from them. Then, the collected larvae we...

Dioctophyme renale is a nematode that can be found parasitizing the kidney, peritoneal cavity and, rarely, other organs of canids and mustelids. This disease has high occurrence in the municipality of Três Barras, state of Santa Catarina, thus making this an interesting area to study the epidemiological aspects of infection by D. renale in dogs. Among 197 dogs, 14.2% showed the parasite eggs in...

The Atlantic anchoveta, Cetengraulis edentulus (Cuvier, 1829) is one of the most commercially important fish species in littoral Brazil. present study evaluates parasitic fauna this engraulid from southeastern Brazilian coast. Between October 2019 and March 2020, a total 100 specimens C. Sepetiba Bay, Rio de Janeiro, Brazil (22°57’44”S; 43°52’28”W), were examined. Eighty-five parasitized by at ...

Twenty-one species of Angiostrongylus plus Angiostrongylus sp. (Nematoda: Metastrongyloidea) are known currently in wildlife. These occur naturally in rodents, tupaiids, mephitids, mustelids, procyonids, felids, and canids, and aberrantly in a range of avian, marsupial and eutherian hosts including humans. Adults inhabit the pulmonary arteries and right atrium, ventricle and vena cava, bronchio...