ABSTRACT
Based on specimens collected from bats of different families, we add new species and extend the known ecological distribution and host associations of insect ectoparasites of bats in Peru. New information is provided for the distribution of 26 species of parasites (25 Diptera and 1 Siphonaptera: Ischnopsyllidae). Four species (Neotrichobius ectophyllae, Strebla galindoi, Strebla paramirabilis and Myodopsylla wolffsohni wolffsohni) are new for Peru and 16 represent new records for the department of Loreto. Also, we found 17 new host-ectoparasite relationships. Of note, we found remarkable new association between Neotrichobius delicatus and bat species from the families Molossidae and Noctilionidae and a novel association between Paradyschiria parvula and a species of Vespertilionidae. Host-ectoparasite specificity was recorded with 14 species as monoxenous, three oligoxenous, seven pleioxenous and two polyxenous.
Subject(s)
Animals , Chiroptera/parasitology , Diptera/classification , Ectoparasitic Infestations/parasitology , Siphonaptera/classification , Host-Parasite Interactions , PeruABSTRACT
Rickettsioses are arthropod-borne diseases caused by parasites from the Order Rickettsiales. The most prevalent rickettsial disease in Brazil is Brazilian Spotted Fever (BSF). This work intends the molecular detection of those agents in ectoparasites from an endemic area of BSF in the state of Espírito Santo. A total of 502 ectoparasites, among them Amblyomma cajennense, Amblyomma dubitatum (A. cooperi), Riphicephalus sanguineus, Anocentor nitens and Ctenocephalides felis, was collected from domestic animals and the environment and separated in 152 lots according to the origin. Rickettsia sp. was detected in pools of all collected species by amplification of 17kDa protein-encoding gene fragments. The products of PCR amplification of three samples were sequenced, and Rickettsia felis was identified in R. sanguineus and C. felis. These results confirm the presence of Rickettsia felis in areas previously known as endemic for BSF, disease caused by Rickettsia rickettsii. Moreover, they show the needing of further studies for deeper knowledge of R. felis-spotted fever epidemiology and differentiation of these diseases in Brazil.
Subject(s)
Animals , Dogs , Humans , Animals, Domestic/parasitology , DNA, Bacterial/genetics , Siphonaptera/microbiology , Insect Vectors/microbiology , Rickettsia felis/genetics , Ticks/microbiology , Brazil/epidemiology , DNA, Bacterial/isolation & purification , Endemic Diseases , Environment , Siphonaptera/classification , Horses , Insect Vectors/classification , Polymerase Chain Reaction , Rickettsia Infections/epidemiology , Rickettsia Infections/microbiology , Rickettsia Infections/transmission , Rickettsia felis/isolation & purification , Ticks/classificationABSTRACT
Polygenis (Polygenis) platensis s. l. (Jordan & Rothschild) foi assinalada pela primeira vez no Brasil nos municípios de Capão da Canoa, Tramandaí e Osório, RS. Novos registros de hospedeiros são dados para a espécie, com a inclusão de Ctenomys flamarioni (Travi) e Ctenomys minutus (De Blainville). Variações morfológicas foram também observadas entre os espécimes coletados sobre mesma espécie de hospedeiro e em mesma localidade, evidenciando alguma hibridização entre as duas subspécies e impossibilitando a determinação do status subespecífico. O número de espécies de pulgas conhecidas para o Brasil é aumentado para 60.
Polygenis (Polygenis) platensis s. l. (Jordan & Rothschild) is recorded for the first time from Brazil in the municipalities of Capão da Canoa, Tramandaí and Osório, RS. New hostrecords for this flea include Ctenomys flamarioni (Travi) and Ctenomys minutus (De Blainville). Morphological variations were also observed among the flea specimens collected on the same species of host at the same municipality, evidencing some hybridization between the two subspecies and disabling the determination of the subspecific status. The number of known species of Brazilian Siphonaptera is now 60.
Subject(s)
Animals , Siphonaptera/classification , Brazil , Siphonaptera/anatomy & histologyABSTRACT
The study was carried out on the basis of 208 specimens of both sexes from a wide geographical range, from central Brazil to central Argentina. The morphology of diagnostic features of Polygenis (Polygenis) rimatus (Jordan) including the presence or absence of the ductus of the spermatheca with a thick wall, the shape of the posterior margin of seventh sternum in females, and the size of the angle between the distal and the proximal arms of the basal part of the aedeagal tubus, and the number of convolutions made by the coil of the aedeagal tubus interior in males, have been studied. The results obtained are important in clarifying some difficulty in species recognition. Besides, the variability of some characteristics between specimens from disjoint localities in Brazil and Argentina is also noticed.
O estudo baseou-se em 208 espécimes, coletados em uma ampla faixa geográfica situada entre os centros do Brasil e da Argentina. Morfologicamente, as características utilizadas para a identificação de Polygenis (Polygenis) rimatus (Jordan) foram estudadas, tais como a presença ou ausência do duto da espermateca com margens espessadas e a forma da margem posterior do esternito VII, entre as fêmeas, bem como o ângulo entre os braços proximal e distal do tubo interno do aedeagus e o número de suas circunvoluções, nos exemplares machos. Os resultados obtidos são importantes para subsidiarem o reconhecimento da espécie. A variabilidade de algumas características entre exemplares de localidades disjuntas no Brasil e Argentina é também noticiada.