Résumé
Abstract Lagochilascariasis is a parasitic disease caused by nematodes of the genus Lagochilascaris. These parasites occur in the neotropical region and their definitive hosts are wild animals, domestic dogs and felids and, accidentally, humans. Here, infection by Lagochilascaris minor is recorded for the first time in a wild felid, in Brazil.
Resumo A lagochilascaríase é uma doença parasitária causada por nematoides do gênero Lagochilascaris. Com distribuição neotropical, este parasito tem como hospedeiros definitivos animais silvestres, canídeos e felídeos domésticos e, acidentalmente, seres humanos. Registra-se a primeira ocorrência de Lagochilascaris minor em um felídeo silvestre no Brasil.
Sujets)
Animaux , Mâle , Femelle , Ascaridoidea/isolement et purification , Panthera/parasitologie , Ascaridoidea/anatomie et histologie , Ascaridoidea/classification , Brésil , Animaux sauvagesRésumé
Abstract Third-stage larvae (L3) of Hysterothylacium sp. were collected by the first time in juveniles of pirarucu Arapaima gigas farmed in the Rio Preto da Eva, Amazonas state. Ninety-eight (98) out of 100 examined fish showed to be parasitized. Five hundred and ninety larvae of Hysterothylacium sp. were collected from the intestines, stomach and pyloric caeca. The mean intensity of parasite indexes was 6.02 (±5.75) ranging from 1 to 40 larvae per host and the mean abundance was 5.9 (±5.76). The A. gigas is the new host record for larvae of Hysterothylacium sp. in Brazil, and this is the first record of larvae of Hysterothylacium (Nematoda: Anisakidae) with zoonotic potential in the pirarucu from South America.
Resumo Larvas de terceiro estágio (L3) de Hysterothylacium sp. foram coletadas pela primeira vez em juvenis de pirarucu Arapaima gigas cultivados no Rio Preto da Eva, Estado do Amazonas. Noventa e oito (98) dos 100 peixes examinados estavam parasitados. Quinhentos e noventa larvas de Hysterothylaciumsp.foram coletados no intestino, estômago e cecos pilóricos. O índice parasitário de intensidade média foi de 6,02 (±5,75) variando de 1 a 40 larvas por hospedeiro e o de abundância média foi de 5,9 (±5,76). A. Gigas é um novo registro de hospedeiro para larvas de Hysterothylacium sp. no Brasil, também sendo, o primeiro registro de larvas de Hysterothylacium sp. com potencial zoonótico em pirarucu da América do Sul.
Sujets)
Animaux , Ascaridoidea/physiologie , Poissons/parasitologie , Ascaridoidea/anatomie et histologie , Ascaridoidea/croissance et développement , Brésil , Larve/anatomie et histologie , Larve/croissance et développement , Larve/physiologieRésumé
Three new sequences of Mitochondrial cytochrome c-oxidase subunit 2 (mtDNA cox-2) from C. pelagicum parasite of Spheniscus magellanicus, the Magelanicus penguin, were determined from Brazilian waters. The sequences presented 99 and 98% of similarity with C. pelagicum sequences from Argentina, deposited on GenBank for the same genetic region and with a strong statistical support inferred from the phylogenetic tree. The morphological and ultrastructural studies that were carried out confirmed the genetic analysis.
Foram determinadas três novas sequências da região do Citocromo c-oxidase da subunidade II do DNA mitocondrial (cox-2 mtDNA) de Contracaecum pelagicum, parasito de Spheniscus magellanicus, pinguim Magalhães, de águas brasileiras. As sequências apresentaram 99 e 98% de similaridade com sequências de C. pelagicum da Argentina depositadas no GenBank da mesma região genética com forte suporte estatístico inferido pela arvore filogenética. Estudos morfológicos e ultraestruturais realizados confirmaram a identidade genética.
Sujets)
Animaux , Femelle , Mâle , Ascaridoidea/anatomie et histologie , Ascaridoidea/génétique , Spheniscidae/parasitologie , Ascaridoidea/physiologie , Séquence nucléotidique , Brésil , ADN mitochondrial/analyse , Complexe IV de la chaîne respiratoire/génétiqueRésumé
From 1997 to 1999, we identified seven human cases of infection by fourth stage larvae of Pseudoterranova decipiens in Chile. All identified larvae were coughed up by the patients. Subjects were 10-55 years old; five were female. Some patients complained of coughing, expectoration, pharyngeal pain, nausea or anal and nasal pruritus. Larvae of three patients were coughed up from 36 h to 7 days after having eaten raw (cebiche or sushi) or lightly fried fish. P. decipiens has a marine life cycle. Infective third stage larva develop to adult stage in pinniped mammals. The nematode eggs are voided with the host faeces and develop and hatch releasing third stage larvae. Some crustaceans and fish act as hosts of third stage larvae. Man is an accidental host for third or fourth stage larvae
Sujets)
Humains , Animaux , Mâle , Femelle , Enfant , Adulte , Adulte d'âge moyen , Infections à Ascaridida/parasitologie , Ascaridoidea/isolement et purification , Infections à Ascaridida/diagnostic , Ascaridoidea/anatomie et histologie , Chili , Poissons/parasitologie , Eau de merRésumé
Se comunica un primer registro de Anisakis simplex (Rudolphi, 1809, det. Krabbe. 1878) (Nematoda:Ascaridoidea), adultos en delfín Tursiops truncatus, Montagu, 1821 (Cetácea: Odontoceti), en el Océano Pacífico Sur Oriental (Antofagasta, Chile), describiendo morfológicamente los especímenes, a la vez que se comprueba la condición cosmopolita y la diversidad de huéspedes marinos que caracterizan a A. simplex
Sujets)
Ascaridoidea/anatomie et histologie , Dauphins/parasitologie , Chili , Estomac/parasitologie , Interactions hôte-parasiteRésumé
Anisakid parasites were found in fish commonly sold in the markets of Jakarta. The larvae found were Anisakis type I and Terranova type B. The rate of infection of these two different Anisakid larvae infecting different species of fish was discussed. To date, no human infection has as yet reported in Indonesia. This may be due to the fact that Indonesians do not usually eat raw fish.