RESUMO
In the present paper, we described the first record of an epibiont protozoan Epistylis sp. Ehrenberg, 1830 (Ciliophora, Peritrichia) attached to Ergasilus chelangulatus Thatcher and Brasil-Sato, 2008, parasite of Pimelodus maculatus Lacépède, 1803 in Brazil, with electron microscope observations. Fish were collected in Veados River, state of São Paulo and the crustacean Ergasilus chelangulatus being registered for the first time in this river, expanding its geographical distribution in Brazil.
Assuntos
Peixes-Gato/parasitologia , Oligoimenóforos/isolamento & purificação , Animais , Brasil , Microscopia Eletrônica de Varredura , Oligoimenóforos/classificação , Oligoimenóforos/ultraestrutura , RiosRESUMO
In the present paper, we described the first record of an epibiont protozoan Epistylis sp. Ehrenberg, 1830 (Ciliophora, Peritrichia) attached to Ergasilus chelangulatus Thatcher and Brasil-Sato, 2008, parasite of Pimelodus maculatus Lacépède, 1803 in Brazil, with electron microscope observations. Fish were collected in Veados River, state of São Paulo and the crustacean Ergasilus chelangulatus being registered for the first time in this river, expanding its geographical distribution in Brazil.
No presente trabalho nós descrevemos o primeiro registro de um protozoário epibionte Epistylis sp. Ehrenberg, 1830 (Ciliophora, Peritrichia) aderido à Ergasilus chelangulatus Thatcher e Brasil-Sato, 2008, parasito de Pimelodus maculatus Lacépède, 1803 no Brasil, com observações de microscopia eletrônica. Os peixes foram coletados no Rio dos Veados, estado de São Paulo e o crustáceo Ergasilus chelangulatus está sendo registrado pela primeira vez neste rio, ampliando sua distribuição geográfica no Brasil.
Assuntos
Animais , Peixes-Gato/parasitologia , Oligoimenóforos/isolamento & purificação , Brasil , Microscopia Eletrônica de Varredura , Oligoimenóforos/classificação , Oligoimenóforos/ultraestrutura , RiosRESUMO
In the present paper, we described the first record of an epibiont protozoan Epistylis sp. Ehrenberg, 1830 (Ciliophora, Peritrichia) attached to Ergasilus chelangulatus Thatcher and Brasil-Sato, 2008, parasite of Pimelodus maculatus Lacépède, 1803 in Brazil, with electron microscope observations. Fish were collected in Veados River, state of São Paulo and the crustacean Ergasilus chelangulatus being registered for the first time in this river, expanding its geographical distribution in Brazil.(AU)
No presente trabalho nós descrevemos o primeiro registro de um protozoário epibionte Epistylis sp. Ehrenberg, 1830 (Ciliophora, Peritrichia) aderido à Ergasilus chelangulatus Thatcher e Brasil-Sato, 2008, parasito de Pimelodus maculatus Lacépède, 1803 no Brasil, com observações de microscopia eletrônica. Os peixes foram coletados no Rio dos Veados, estado de São Paulo e o crustáceo Ergasilus chelangulatus está sendo registrado pela primeira vez neste rio, ampliando sua distribuição geográfica no Brasil.(AU)
Assuntos
Animais , /parasitologia , Oligoimenóforos/isolamento & purificação , Brasil , Microscopia Eletrônica de Varredura , Oligoimenóforos/classificação , Oligoimenóforos/ultraestrutura , RiosRESUMO
Ciliates occur in all major aquatic and soil environments worldwide and are important links in the microbial food webs, which, along with other free-living protists, are generally overlooked in biodiversity conservation programs. In Brazil, the northern region comprises the Brazilian Amazonia, an area widely known for its huge biodiversity. However, the diversity of ciliates in that region is still almost unknown. As result of the present study, a total of 21 species of ciliates, distributed among 15 genera, were inventoried from samples of eutrophized water collected in the city of Belém, capital of the state of Pará, one of the states which comprise the Brazilian Amazonia. In addition, a local population of the rare scuticociliate Cristigera hammeri is described from optical and electron microscopy observations, and its synonymy with C. pleuronemoides is rejected based on new evidence.
Assuntos
Biodiversidade , Cilióforos/classificação , Cilióforos/citologia , Água/parasitologia , Brasil , Cilióforos/ultraestrutura , Eutrofização , Oligoimenóforos/classificação , Oligoimenóforos/citologia , Oligoimenóforos/ultraestrutura , Especificidade da EspécieRESUMO
The ciliate Trichodina was recorded on the calanoid Notodiaptomus deitersi in a shallow, eutrophic reservoir, located in the centre-west of Brazil. The species was confirmed as Trichodina diaptomi, a species widely distributed in Europe, Africa, Asia and Australia. It was observed moving freely over the carapace of the copepod, and using its adhesive disc. This is the first record for the species in the Americas.
Assuntos
Copépodes/parasitologia , Oligoimenóforos/isolamento & purificação , Animais , Brasil , Água Doce/parasitologia , Microscopia Eletrônica de Varredura , Oligoimenóforos/ultraestruturaRESUMO
Peritrich ciliates of the genus Trichodina are internal or external symbionts of invertebrate and vertebrate hosts. We describe here Trichodina ctenophorii n. sp., a symbiont of Mnemiopsis mccraydii and Beroë ovata (Phylum Ctenophora). The morphology of fixed and living specimens is revealed by silver impregnation, scanning electron microscopy, and differential interference microscopy. Distinguishing features of Trichodina ctenophorii include a denticular morphology composed of falcate, blunt-tipped blades, and long, straight thorns, with five pins per denticle. Trichodina ctenophorii is found only on the comb plates of these ctenophores. To the best of our knowledge, this is the first report of a trichodinid from the Gulf of Mexico and the first associated with ctenophores.