Parasites of the Collared Peccary from Texas

Abstract

Results of a survey of the parasites of the collared peccary (Dicotyles tajacu angulatus) in Texas are presented. Three ectoparasites, Amblyomma cajennense, Dermacentor variabilis, and Pulex porcinus were very common on peccaries from south Texas, but less common or absent in arid west Texas. Sucking lice, Pecaroecus javalii, were common on peccaries from west Texas, but were not found in south Texas. The known range of this louse in Texas is extended into the Big Bend area. Two ticks, Amnblyomma inornatumn and Haemaphysalis leporis-palustris, were found infrequently. Five of nine species of endoparasites found in this survey (Dirofilaria acutiuscula, Parabronema pecatriae, Parostertagia heterospiculum, Physocephalus sp., and Texicospirura turki) were prevalent. Three species, D. acutiuscula, Gongylonema baylisi, and Fascioloides magna, are reported from North American peccaries for the first time. The geographic distribution of the large American liver fluke, F. magna, coincided with an area where the parasite is enzootic in white-tailed deer. It is concluded that parasitism was of little importance in population control of peccaries during the period of the study.

Morphology of the synlophe and genital cone of Parostertagia heterospiculum (Trichostrongylidae) with comments on the subfamilial placement of the genus

“…Structure of the spicules was determined from whole mounts and dissected specimens. Schwartz & Alicata, 1933); (2) voucher Samuel & Low, 1970).…”

“…Beyond the original description there have been few reports of this trichostrongylid (Samuel & Low, 1970).…”

Fauna helmintológica de catetos (Tayassu tajacu Linnaeus, 1758) procedentes da Amazônia Brasileira1

“…Estes resultados diferem daqueles obtidos por Nascimento (2004) no Brasil e Samuel & Low (1970) no Texas, que observaram maiores indicadores de infecção por Parostertagia heterospiculum.…”

“…Estes hábitos alimentares apresentados por T. tajacu são, provavelmente, a principal causa dos importantes indicadores de infecção observados para os espirurídeos, pois, ao ingerirem coleópteros coprófagos contendo larvas infectantes, estes animais se infectam e/ou aumentam sua carga parasitária. Se assemelhando a este estudo, Samuel & Low (1970) e Corn et al (1985) nos EUA e Neto & Tatcher (1986) no Brasil, observaram altos índices para T. turki e P. sexalatus em catetos. Entretanto, ao avaliar os indicadores de infecções de espirurídeos, Nascimento (2004) observou índices importantes de abundância e prevalência para P. sexalatus e A. strongylina.…”

Description of males of Parabronema pecariae Ivaschkin, 1960 (Nematoda, Habronematoidea) parasitizing peccaries (Mammalia, Tayassuidae) in Brazil

“…Skrjabin and Sobolev (1963) present the same short description and original figures of Schwartz and Alicata (1933). Samuel and Low (1970), Corn et al (1985) in studies of parasites of Texan peccaries (Dicotyles tajacu angulatus and T. tajacu, respectively), only refer to the occurrence of this species without any further comments either on sex or morphological aspects of the recovered nematodes. Males and females of P. pecariae were reported for the first time in Brazil by Neto and Thatcher (1986) in a study of parasites recovered from Amazonian peccaries.…”