ABSTRACT
This study reports on the morphology and morphometry of the nematode Cheilospirura hamulosa on the basis of bright-field and scanning electron microscopy. Specimens were recovered after necropsies of 28 Brazilian ring-necked pheasants ( Phasianus colchicus) and 30 domestic chickens ( Gallus g. domesticus) from backyard flocks. Measurements relate to the buccal capsule in the males and the distance of the excretory pore from the anterior end in both sexes, while the vulva and ovijector are studied for the first time. The most important taxonomic characters for the diagnosis of this nematode are the four long, longitudinal cordons which are neither anastomosed nor recurrent. They are composed of a groove with margins formed by cuticular specializations that change in appearance and width backward along the body and which run backward from the cephalic region ending near the posterior end as a cuticular depression. According to their morphology, these cordons could probably have nutritional, attachment and/or sensory functions.
Subject(s)
Nematoda/cytology , Nematode Infections/veterinary , Animals , Bird Diseases/parasitology , Birds/parasitology , Chickens/parasitology , Female , Male , Microscopy, Electron, Scanning , Nematoda/classification , Nematoda/ultrastructure , Poultry Diseases/parasitologyABSTRACT
New host and geographical records are reported for the nematode Lappetascaris lutjani Rasheed, 1965, parasitizing the marine fish Trachipterus arawatae Clark, 1881 in Brazilian waters. Morphometric data and illustrations of the parasites are included.
Subject(s)
Ascaridoidea/classification , Fishes/parasitology , Animals , Ascaridoidea/anatomy & histology , Atlantic Ocean , Brazil , Female , Male , SeawaterABSTRACT
New host and geographical records are reported for the nematode Lappetascaris lutjani Rasheed, 1965, parasitizing the marine fish Trachipterus arawatae Clark, 1881 in Brazilian waters. Morphometric data and illustrations of the parasites are included
Subject(s)
Animals , Male , Female , Ascaridoidea , Fishes , Ascaridida Infections , Ascaridoidea , Atlantic Ocean , Brazil , Fish Diseases , SeawaterABSTRACT
The present paper reports acuarioid nematodes recovered from avian hosts. A new species of the genus Schistorophus Railliet, 1916 is proposed based mainly on findings referring to ptilina, spicules and vagina. Ancyracanthopsis coronata (Molin, 1860) Chabaud & Petter, 1959 is referred again in Brazil since its proposition in 1860, from specimens recovered from a Brazilian bird. A revised key to the species of the genus Schistorophus is also presented
Subject(s)
Animals , Female , Bird Diseases/parasitology , Nematoda/classification , Nematode Infections/veterinary , Brazil , Host-Parasite Interactions , Nematoda/anatomy & histology , Nematoda/physiologyABSTRACT
É descrita recente excursäo de coletas de helmintos de peixes e de outros vertebrados da zona do Pantanal de Mato Groso. Em quadro säo mostrados os helmintos identificados e hospedeiros. Säo feitos comentários sobre o ciclo de vida dos Eustrongylides (NeMatoda). Refere-se ainda a excursäo de Travassos e colaboradores na regiäo, no ano de 1922
