ABSTRACT
Abstract Cruzia lauroi sp. nov. is described from Salvator merianae (Duméril & Bibron, 1839) (Squamata; Teiidae). The new species differs from all previously described species through several morphological characteristics: number of tooth like structures per row in the inner pharynx; and presence of unpaired papillae on the anterior border of the cloacal aperture. However, Cruzia lauroi sp. nov. is closest to C. tentaculata (Rudolphi, 1819), through having similar distribution of male caudal papillae, unpaired pre-cloacal papillae and females with an pre-equatorial vulva. Cruzia lauroi sp. nov. differs from C. tentaculata regarding smaller total body length of individuals, higher number of tooth like structures per row in the pharynx, greater size of diverticulum, smaller size of spicules and a more anterior vulva than in C. tentaculata; and the males do not have caudal alae. Cruzia mazza, C. travassosia, C. mexicana and C. testudines were considered to be species inquirendae, because their descriptions need more detailed taxonomic studies.
Resumo Cruzia lauroi sp. nov. é uma nova espécie descrita em Salvator merianae (Duméril & Bibron, 1839) (Squamata; Teiidae). Essa nova espécie difere de todas as espécies descritas anteriormente por diferentes características morfológicas: pelo número de dentes por coluna longitudinal interna na faringe; pela presença de papila ímpar na borda anterior da cloaca. Entretanto, Cruzia lauroi sp. nov. possui similaridades com C. tentaculata (Rudolphi, 1819), por ter distribuição semelhante das papilas caudais dos machos, por possuir papila pré-cloacal ímpar e por possuir fêmeas com vulva pré-equatorial. Cruzia lauroi sp. nov. se difere de C. tentaculata em relação ao menor comprimento total do corpo dos indivíduos, pelo maior número de dentes por coluna longitudinal interna na faringe; pelo maior tamanho de divertículo; pelo menor tamanho de espículos; por possuir fêmeas com vulva mais próxima a extremidade anterior do que observado em fêmeas de C. tentaculata; e pelos machos não possuírem asa caudal. Cruzia mazza, C. travassosia, C. mexicana e C. testudines foram consideradas species inquirendae, pelo fato de suas descrições necessitarem de maior detalhamento taxonômico.
Subject(s)
Animals , Male , Female , Ascaridida/anatomy & histology , Ascaridida/classification , Lizards/parasitology , Brazil , Forests , Ascaridida/isolation & purificationABSTRACT
Lagochilascaris minor Leiper, 1909 is a parasitic nematode with its biological cycle still unknown, even though it was found in humans, domestic and silvatic animals. Adult worms, collected by surgical drainage from a human patient from the State of Pará, Brazil were micrographed using a scanning electron microscope. Morphological aspects of males and females such as cephalic structures, caudal papillae and cuticular patterns were analyzed and compared with the previous descriptions adding new data for the identification of this species.
Subject(s)
Animals , Ascaridida/anatomy & histology , Brazil , Microscopy, Electron, ScanningABSTRACT
The present paper deals with a preliminary study of different larvae of nematoda found in two species of fish Paralichth orbignyanus and Paralichthys patagonicus. In P. orbignyanus the genus Terranova type a was found. Both Anisakis type I and Hysterothylacium were present in P. patagonicus. Different types of larvae belonging to genera Terranova (B and B'), Contracaecum (A and B) and Raphidascaris occurred in both P. patagonicus and P. orbignyanus. The specimens of Nematoda were described and the corresponding morphometric indexes were determined. The abundance of Nematoda obtained in relation to the diet of the flounders led us to conclude that P. orbignyanus feeds basically on crabs and fish, while P. patagonicus has a more diverse diet