Sarcocystis sp. shed by the common boa snake ( Boa constrictor ) in Brazil.

Autor:	Bezerra TL; Department of Anatomy, Pathology and Clinics, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil., de Jesus RF; Department of Anatomy, Pathology and Clinics, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil., Soares RM; Departament of Preventive Veterinary Medicine and Animal Health, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Av. Prof. Dr.Orlando Marques de Paiva, 87, Cidade Universitária, São Paulo, SP, 05508 270, Brazil., Borges-Silva W; Department of Anatomy, Pathology and Clinics, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil., Gondim LFP; Department of Anatomy, Pathology and Clinics, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil.
Jazyk:	angličtina
Zdroj:	International journal for parasitology. Parasites and wildlife [Int J Parasitol Parasites Wildl] 2023 Sep 05; Vol. 22, pp. 84-91. Date of Electronic Publication: 2023 Sep 05 (Print Publication: 2023).
DOI:	10.1016/j.ijppaw.2023.09.001
Abstrakt:	The genus Sarcocystis contains around 200 species and 25 of these infect snakes. Two Sarcocystis spp. shed by snakes have called special attention of the scientific community. S. nesbitti , which is shed by scrub pythons ( Simalia amethistina ), causes myopathy in humans that consume water or food contaminated with the parasite. Sporocysts of S. singaporensis , excreted by reticulated pythons ( Malayopython reticulatus ), is letal for rats and was successfully tested in the biological control of these rodents. A high biodiversity of snakes is found in Brazil, however, scarce information is available about Sarcocystis spp. in Brazilian snakes. Herein, we investigated Sarcocystis sp. in feces of the common boa ( Boa constrictor ) from Salvador, as it is widely distributed in Brazil and it is also bred in other countries. Feces of 65 boas were examined, and Sarcocystis sp. was found in 1/65 (1.53%) snakes. All snakes were alive, and for this reason, intestinal scrapping, which is the most sensitive method to detect the parasite, was not performed. Morphometric evaluation of sporocysts showed significant differences in their sizes. PCR and multilocus sequencing of four genetic markers ( cox1, 18S , ITS1, and 28S ) revealed that sporocysts corresponded to a new Sarcocystis species. Sequences of cox1 and 18S had identities of 100% and higher than 98%, respectively, with sequences obtained from the rodent Lagostomus maximus in Argentina. ITS1 and 28S sequences did not match with any known Sarcocystis sp. No ITS1 and 28S sequences were available for the Sarcocystis sp. found in the Argentinian L. maximus. Bioassay using the boa sporocysts was conducted in three mouse lineages and in Rattus norvegicus , but no parasitic stages were detected in these rodents. We concluded that the common boa is probably the definitive host of a new species of Sarcocystis sp. that has L. maximus or related rodents as intermediate hosts. Competing Interests: The authors declare no conflict of interest. (© 2023 The Authors.)
Databáze:	MEDLINE
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