Sarcocystis neurona, seroprevalence of antibodies in equines and research of oocystis in opossum in Ilhéus - Itabuna microregion, Bahia, Brazil

Abstract

The aims of this study were to determine the seroprevalence of Sarcocystis neurona antibodies in equines in the Ilhéus-Itabuna microregion (BA), and identify possible factors associated with infection. The presence of sporocysts/oocysts of Sarcocystis spp. was also verified in Didelphis spp. A total of 669 serum samples were collected from equines in 56 properties located in 12 municipalities in the region. Indirect fluorescent antibody test was performed with slides containing merozoites of the S. neurona, using a cut-off titer of 1:80. Occurrence of 7.92% of anti-S. neurona antibodies was observed in the sampled equines. The purposes trade and work were significantly associated with the presence of antibodies (p<0.05), and being used for the purpose of work (21.6%) was considered a risk factor, while being used for the purpose of trade (3.6%) was a protective factor. A total of 25 Didelphis spp. was captured for research on sporocysts/oocysts in stool samples and intestinal scrapings, being all negative. Didelphis spp. were all negative for the presence of Sarcocystis spp. and this circumstance does not change the fact that seroprevalence of S. neurona has been observed in horses raised in the southern Bahia.

Levantamento e identificação de enteroparasitos em marsupiais Didelphis spp. capturados em bosques da Universidade Estadual do Norte do Paraná no município de Bandeirantes

“…assim como presença de formas parasitárias de outros protozoários como Eimeria spp., Cryptosporidium spp., e cistos de Giardia spp. que são de grande relevância para saúde pública (Teixeira et al, 2003;Zanette et Contribuciones a Las Ciencias Sociales, São José dos Pinhais, v.17, n.6, p. 01-12, 2024al., 2008Biolchi et al, 2021;Pellizzoni et al, 2021). Os oocistos semelhantes a Octosporella spp.…”