Differences in richness and composition of gastrointestinal parasites of small rodents (Cricetidae, Rodentia) in a continental and insular area of the Atlantic Forest in Santa Catarina state, Brazil

Abstract

The first and only study on gastrointestinal parasites of wild rodents in the Island of Santa Catarina was done in 1987. The aim of this study was to identify intestinal parasites from wild rodents in Santo Amaro da Imperatriz and Santa Catariana Island, and to compare the richness and composition of the gastrointestinal parasite community of both areas. Rodents were captured with live traps, and feces were screened using the sedimentation method and optical microscopy. The following species of rodents were captured in the two areas: Akodon montensis, Euryoryzomys russatus, Oligoryzomys nigripes and Nectomys squamipes. In Santo Amaro da Impetratriz, prevalent parasites were: A. montensis (51%), E. russatus (62%), O. nigripes (53%) and N. squamipes (20%). From the Island of Santa Catarina the rodent prevalence rates were: A. montensis (43%), E. russatus (59%), O. nigripes (30%) and N. squamipes (33%) and the collected parasites were: Hymenolepis sp., Longistriata sp., Strongyloides sp., Hassalstrongylus sp., Syphacia sp., Trichomonas sp., Ancylostomidae, Trichuridae, Oxyuridae and Eucoccidiorida. The species richness (10.6 ± 0.7) of the endoparasite comunity in the area located on the continent was higher (p < 0.01) and different (p = 0.001) from that of the area located on the island (6.9 ± 0.5). , Syphacia sp., Trychomonas sp., Ancilostomatidae,Trichuridae, Oxyuridae e Eucoccidiorida. Foi possível observar que os roedores da área localizada no continente (Santo Amaro da Imperatriz) possuem uma comunidade de parasitas gastrointestinais mais rica (10.6 ± 0.7; p < 0.01) e diversa (p = 0.001) do que a comunidade presente na Ilha de Santa Catarina (6.9 ± 0.5). KeywordsPalavras-chave: Biogeografia, Unidade de Conservação Desterro, Parque Estadual da Serra do Tabuleiro.

The influence of habitat fragmentation on helminth communities in rodent populations from a Brazilian Mountain Atlantic Forest

“…Nematodes were the most represented helminth phylum in all rodent species in the present study, and the total helminth richness observed was high when compared to that reported in other studies, which varied from seven to eight for A. montensis and from two to four for O. nigripes (Pü ttker et al, 2008;Navone et al, 2009;Kuhnen et al, 2012). Nematodes were the most represented helminth phylum in all rodent species in the present study, and the total helminth richness observed was high when compared to that reported in other studies, which varied from seven to eight for A. montensis and from two to four for O. nigripes (Pü ttker et al, 2008;Navone et al, 2009;Kuhnen et al, 2012).…”

Gastrointestinal parasites in feral cats and rodents from the Fernando de Noronha Archipelago, Brazil

“…For instance, a prevalence of 53.5% (15/28) and 76% (76/100) were documented in feral cats from Christmas (Australia) and Baleares (Spain) islands (ADAMS et al, 2008;RAAB et al, 2016), whereas a positivity of 46.2% (30/65) was reported in rodents from the Santa Catarina island (Brazil) (KUHNEN et al, 2012). This suggests that animals living in the study areas are exposed to a high infective pressure.…”

Paracoccidioides brasiliensis Infection in Small Wild Mammals

“…(3), O. nigripes heart (4) and negative control (5) There are several reports in the literature indicating that small wild rodents can be reservoirs of human pathogens. Akodon sp, E. russatus and O. nigripes were reported with Leishmania (Viania) braziliensis [34] and other parasites such as Hymenolepis sp., Longistriata sp., Strongyloides sp., Trychomonas sp., Ancilostomatidae, Trichuridae and Oxyuridae [35].…”