Enterobius vermicularis. NG Morfología del Huevo Enterobius vermicularis in preschool children from a suburban area in San Félix, Bolívar. L’espècie més coneguda és l’oxiür humà (Enterobius vermicularis, antigament Oxyuris A tots els fins pràctics, la morfologia, cicle biològic, presentació clínica i . Gastrodiscoides is genus of zoonotic trematode under the class Trematoda. It has only one .. Strongyloides stercoralis · Strongyloidiasis · Trichostrongylus spp. Trichostrongyliasis · Halicephalobus gingivalis · Oxyurida · Enterobius vermicularis.

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Trypanoxyuris Paraoxyuronema lagothricis Nematoda: Oxyuridae in Lagothrix cana Primates: Oxyuridae em Lagothrix cana Primates: Atelidae from the Vermicularix Amazon, pinworms were found in the large intestine. The intensity of infection was 64 parasites 17 males and 47 females mofologia there vrrmicularis no gross pathological changes related to parasitism.

After morphological analysis the parasites were identified as Trypanoxyuris Paraoxyuronema lagothricis Buckley, Nematoda: This is the first record of this oxyurid species in primates in Brazil. The pinworm species of the genus Trypanoxyuris Vevers, Nematoda: Oxyuridae vermichlaris tiny parasites that inhabit the large intestine of Neotropical non-human primates, although there are a few species of these parasites found in rodents HUGOT, These helminths are the causative agents of oxyuriasis in platyrrhines and, similarly what can be observed in other pinworms from primates, Trypanoxyuris spp.

After a short period of embryonation, the eggs of the parasite become infective and their ingestion is the primary mechanism of transmission heteroinfection and external autoinfection ; however, larvae of the parasite can hatch still in the anus and perianus of the infected host and migrate ascending to the intestine retroinfection FELT; WHITE, So far, 18 species of Trypanoxyuris are known and have been grouped in four subgenera: In Brazil, Trypanoxyuris spp. Atelidae ; 2 T. Cebidae ; 3 T.

Cebidae ; 4 T.

Aotidae ; 5 T. Geoffroy, and Saimiri morfoogia Linnaeus, Primates: Cebidaeand 6 T. Moreover, unidentified species of Trypanoxyuris were recorded in A.

Despite these previous reports, the amount of species of Trypanoxyuris that occurs in Brazilian primates may be higher than previously recorded considering the richness of primate species in Brazil and their helminths, which have not been comprehensively studied. After a short period in captivity, the animal died and necropsy was performed. A fecal sample from the specimen was processed by the spontaneous sedimentation method and eggs with morphology suggestive of oxyurids were found.

They were morffologia and mounted in nonpermanent preparation between slide and coverslip and examined by light microscopy. Preparation of en face mounts was performed according to Anderson Images of the parasites were taken by a Leica microscope and the measures were obtained through the analysis of the images in the Leica Application Enterobous EZ LAZ version 2.

The taxonomic identification was based on morphological criteria preconized by several authors. The generic and subgeneric identifications were performed according to Morfooogia, and the specific determination was carried out according to Buckley and Hugot The measures of 20 specimens 10 males and 10 females are shown in Table 1 ; they are presented by the mean followed by standard deviation and range between parentheses.


Measures are given in micrometers, entwrobius for the length of the body which is given in millimeters.

Morphometric data of Trypanoxyuris Paraoxyuronema lagothricis morfolovia in Lagothrix cana from Brazil and measures reported by other authors.

Trypanoxyuris Paraoxyuronema lagothricis Buckley, Hugot et al. Trypanoxyuris Paraoxyuronema lagothricis found in Lagothrix cana from Brazil. Later, the species was reported in L. This is the first report on the occurrence of this parasite in Brazil.

The measures Table 1 and morphological features of the specimens studied, as well as the structural arrangement of the buccal cavity, the presence of ventral esophageal teeth with a small apical end, and the shape of male bursa and female ovejector are in agreement with those reported for Vermiularis. In relation to other species of Trypanoxyuris reported in Brazilian primates, T. In relation to T. Regarding other species of the subgenus Paraoxyuronema not yet reported in Brazil, T.

The clinical manifestations verified in the infection with Trypanoxyuris as well as other pinworm infections are not significant in most vegmicularis.

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Anal itching and irritation, irritability, agitation, and aggressiveness of the host are enterbius clinical signs usually verified during the course of the disease TOFT II, However, the occurrence of high parasitic burden and erratic parasitism has been observed and, enteeobius some cases, it may be associated with the death of the host MURATA et al.

In the present study, there was no evidence that infection with T. In fact, during the necropsy of the primate, there were no gross changes such as edema, hyperemia, or mucosal lesions of the caecum, colon and rectum of the animal, at least in part, due to low intensity of infection.

Similarly, the specimen of L. Under an evolutionary approach, studies of primate oxyurids have provided evidence of the process of coevolution between these parasites and their hosts. Cameron was the first to find high host specificity in this group of nematodes, vermiculafis that each species of these parasites would occur in specific groups of primates.

Given the close evolutionary relationship between Trypanoxyuris and their platyrrhine hosts, as well as reports of infection of these primates in other South American countries with species not yet recorded in Brazil, it is possible that the diversity of these oxyurids occurring in the country could be underestimated. In this regard, at least nine other species of Trypanoxyuriswhich have already been reported in South American primates, may still be found in Brazil: Moreover, primates belonging to the genera Leontopithecus Lesson,Cebuella Gray, Primates: Cebidae and Cacajao Lesson, Primates: Pitheciidae have not yet been reported infected with Trypanoxyuris HUGOT,and they may be hosts of unknown species.


Overall, morfolgia study of helminth parasites from primates in Brazil is fragmented. So far, only 27 species of nematodes have been reported in 36 species of primates in the country, and only four nematodes species in primates of the genus Lagothrix revised by VICENTE et al. Thus, it is possible that other species of Trypanoxyuris and several other parasitic interactions be eliminated before they become known.

In this way, conservation of primate species is important for the maintenance of these parasite species. Furthermore, the scientific interaction between primatologists and helminthologists should be encouraged to maximize achievement on parasitological enterohius, thereby contributing to increase the knowledge on the biodiversity of helminths from primates in Brazil. Trypanoxyuris Trypanoxyuris minutus associated with the dead of a wild southern brown howler monkey, Alouatta guariba clamitans, in Rio Grande do Sul, Brazil.

Arq Inst Biol ; 69 4: Ann Par Hum Comp ; 33 Mem Inst Butantan ; Biochemical and haematological parameters in owl monkeys infected and uninfected with Trypanoxyuris sp.

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J Helminthol ; 83 3: Proc Helminthol Soc Wash ; 49 1: On two new species of Enterobius from the monkey Lagothrix humboldtii. J Helminthol ; 9 3: The species of Enterobius Leach, in Primates.

J Helminthol ; 7 3: Evaluation of a timed and repeated perianal tape test for the detection of pinworms Trypanoxyuris microon in owl monkeys Aotus nancymae. J Med Primatol ; 34 4: Phylogeny of Neotropical monkeys: Mol Phylogenet Evol ; 9 3: Primates and their pinworm parasites: Syst Biol ; 48 3: Sous-genre Hapaloxyuris parasite de primates Callitrichidae. Zool ; 6 4: Sous-genre Trypanoxyuris parasite de primates Cebidae et Atelidae.

Zool mofrologia 7 1: Nematoda, Oxyurida pinworm parasites of primates and rodents.

Int J Parasitol ; 26 2: Nematodes parasitos de vertebrados venezolanos. Some oxyurids Nematoda from neotropical primates. Z Parasitenkd ; 24 1: Gastro-intestinal parasites of free-ranging red-handed howlers Alouatta belzebul in Eastern Amazonia. A Primatologia no Brasil — 9.

Sociedade Brasileira de Primatologia; Checklist of helminth parasites of threatened vertebrate species from Brazil. Fatal infection with human pinworm, Enterobius vermicularis, in a captive chimpanzee. J Med Primatol ; 31 2: Occasional Papers in Conservation Biology: Nematodes from mammals in Brazil: Neotrop Helminthol ; 5 2: Rev Bras Parasitol Vet ; 19 2: Bertiellosis in Brazilian non-human primates: Atelidae in Santa Catarina State, Brazil.

Rev Patol Trop ; 37 1: Notes on some helminth parasites from Peruvian monkeys. Lab Primate Newsl ; 29 2: The pathoparasitology of the alimentary tract and pancreas of nonhuman primates: