Sobre alguns ectoparasitos de roedores silvestres do município de caratinga, Minas Gerais, Brasil: II. Acarofauna

Abstract

Os autores capturaram ácaros de roedores silvestres na região de Caratinga, Minas Gerais, Brasil, entre abril de 1976 e março de 1977. Foram capturados 169 roedores de 10 espécies e coletados 2.444 ácaros de 11 espécies. Eubrachylaelaps rotundus foi o ácaro predominante, sendo capturado principalmente em roedores do gênero Akodon. Vinte e três registros novos de hospedeiros são apresentados com Atricholaelaps guimaraesi aparecendo pela primeira vem em seis espécies de roedores.<br>The authors captured mites from wild rodents in the county of Caratinga, State of Minas Gerais, Brazil, between April 1976 and march 1977. One hundred and sixty-nine wild rodents of 10 species were captured and 2444 mites of 11 species were collected. Eubrachylaelaps rotundus was the predominant mite being captured mainly from rodents of the genus Akodon. Twenty-three host records are presented with Atricholaelaps guimaraesi appearing for the first time on six species of rodents

Host-ectoparasite specificity in a small mammal community in an area of Atlantic Rain Forest (Ilha Grande, State of Rio de Janeiro), Southeastern Brazil

“…Despite of the marked specificity found in our data, other studies have shown that laelapine mites often share different host species (e.g. Botelho & Williams 1980, Botelho et al 1981, Linardi et al 1984, Guitton et al 1986). Furman (1972) reported that laelapine mites were often associated with hosts at a higher taxonomic level (genus, family).…”

“…and rodents of the family Echimyidae was noted by Furman (1972) and has been corroborated in several different studies (e.g. Botelho & Williams 1980, Linardi et al 1991a. Similarly, G. goyanensis, G. oudemansi and L. manguinhosi were strictly host specific.…”

“…In most Neotropical ectoparasite studies the similarity of the host-parasite fauna is presented simply as a list or table of the shared ectoparasite species (e. g. Botelho & Williams 1980, Linardi et al 1984, 1987, 1991a, b, 1996, Guitton et al 1986). But in a few cases, ecological coefficients have been used to explain the associations and preferential hosts (Botelho et al 1981, Barros-Battesti et al 1998 or numeric analyses to cluster hosts (Lareschi 1996) and these studies have begun to clarify the level of the host-ectoparasite association (i.e.…”

“…Linardi 1977, Botelho & Linardi 1980, Cerqueira & Linardi 1981. Linardi and Guimarães (2000), based on the study of Holland (1964), classified the hosts of fleas into four groups: primitive (those who introduce the flea species into a certain area), primary (those who are more frequently parasitized and that maintain the local infection), secondary (those that can act in the maintenance and survival of a given Siphonaptera species) and, accidental (accidents, casual occurrences or laboratory contamination).…”

Small todents fleas from the bubonic plague focus located in the Serra dos Órgãos Mountain Range, State of Rio de Janeiro, Brazil

“…The mean number (intensity) of fleas per host (924/601=1.54) (Table III) was higher than the ones previously reported in other habitats in Brazil: 0.15 from Caatinga scrub forest in Brazilian northeast (Guimarães 1972) and 0.29 to 0.64 from Araucaria forest in State of Paraná (Barros et al 1993, Barros-Battesti et al 1998). In the Atlantic forest, this number was around 0.30 from Guaraqueçaba in State of Paraná (Bicho et al 1999), 0.93 from Caratinga (Botelho & Linardi 1980); 1.06 from Juiz de Fora, both in the State of Minas Gerais (Linardi et al 1987); 2.85 from Salesópolis, State of São Paulo (Linardi 1977) and 3.6 from Angra dos Reis, State of Rio de Janeiro (Guitton et al 1986), in spite of methodological differences and capture efforts.…”