New species of Eimeria (Apicomplexa: Eimeriidae) from Thrichomys fosteri and Clyomys laticeps (Rodentia: Echimyidae) of the Brazilian Pantanal
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2017-11-01
Autores
Barreto, Wanessa Teixeira Gomes
Viana, Lúcio André
Santos, Filipe Martins
de Oliveira Porfírio, Grasiela Edith
Perdomo, Alessandra Cabral
da Silva, Alanderson Rodrigues
de Sousa, Keyla Carstens Marques [UNESP]
de Oliveira, Michel Angelo Constantino
Herrera, Heitor Miraglia
de Andrade, Gisele Braziliano
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Resumo
The echimyid rodents Thrichomys fosteri and Clyomys laticeps are among the most commonly recorded small mammals in the Pantanal wetland of Brazil. These species play important ecological roles since they are the basis of the food chain of some predators and are parasitized by some pathogens. Knowledge of the eimerians that parasitize echimyid rodents in Brazil is absent, and only one report is available for South America. We therefore investigated parasitism by coccidians in the echimyids T. fosteri and C. laticeps in the Pantanal. Using morphological and morphometric features and associated statistical analyses, we describe five new eimerian species parasitizing T. fosteri (Eimeria nhecolandensis n. sp., Eimeria jansenae n. sp., and Eimeria fosteri n. sp.) and C. laticeps (E. nhecolandensis n. sp., Eimeria corumbaensis n. sp., and Eimeria laticeps n. sp.) in different types of infection associations. We document the developmental forms in the tissues, and describe lesions in the enteric tract of some infected animals. We also discuss some approaches regarding epidemiological and ecological data. Our results demonstrate that echimyid rodents in the Brazilian Pantanal are important hosts for the maintenance of enteric coccidia. Moreover, in some circumstances, this parasitism may threaten the health of the hosts.
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Clyomys laticeps, Coccidia, Histopathology, Pantanal, Small mammals, Thrichomys fosteri
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Parasitology Research, v. 116, n. 11, p. 2941-2956, 2017.