Résumé
Abstract Even though the Onychophora represent a whole phylum, observations of their activity pattern in nature are almost non-existent. Here we report on the relationship between humidity and light and activity pattern of a new species of velvet worm, genus Epiperipatus, from four years of field observations in the South Pacific of Costa Rica. We found that most activity occurs during the driest and darkest nights of the year, in contrast with theoretical predictions.
Resumo Onychophora constituem um filo de animais. Não obstante, as observações do comportamento sazonal das espécies de "peripatos" na natureza são praticamente inexistentes. Com base em quatro anos de observações em campo, nós demostramos a relação entre umidade e luz, e padrão de atividade diária de uma nova espécie no gênero Epiperipatus, do Pacífico Sul da Costa Rica. Descobrimos que a maioria das atividades ocorre durante as noites mais secas e mais escuras do ano, em total contraste com as previsões teóricas.
Sujets)
Animaux , Comportement animal/physiologie , Humidité , Invertébrés/effets des radiations , Invertébrés/physiologie , Lumière , Spécificité d'espèce , Température , Dynamique des populations , Climat , Écosystème , Costa Rica , BiodiversitéRésumé
A serological survey has been carried out to detect evidence of hantavirus infection in rodents from two provinces of Thailand. This study aimed to examine virus antibody in 354 rodents trapped among 6 different villages of Nakhon Pathom Province (February-March, 1998) and in 326 rodents trapped among 14 villages of Nakhon Ratchasima Province (August-October, 1998). Seroprevalence among rodents from Nakhon Pathom Province (2.3%), was mostly find in Rattus norvegicus (3.8%) and Bandicota indica (2.6%). In Nakhon Ratchasima Province seroprevalence (4.0%) was mostly in Bandicota indica (19.1%) and Rattus exulans (3.5%).
Sujets)
Animaux , Anticorps antiviraux/sang , Test ELISA , Orthohantavirus/immunologie , Infections à hantavirus/épidémiologie , Rats , Maladies des rongeurs/épidémiologie , Rodentia , Études séroépidémiologiques , Thaïlande/épidémiologieRésumé
Preliminary serological investigations were prefered to detect evidence of arenavirus infection in rodents. The study examined virus antibody in 367 rodents trapped in 6 different geographical areas of Nakhon Pathom Province, Thailand from February-March, 1998. The overall seroprevalence among rodents was 13.3%, mostly in Bandicota savilei (35.7%) and Rattus norvegicus (31.5%). Between ecology, behavior and sex of the rodents, seroprevalence was not significantly different (p>0.05), however the seroprevalence found among different geographical areas of Nakhon Pathom Province were significantly different (p<0.0001).
Sujets)
Animaux , Anticorps antiviraux/sang , Antigènes viraux/immunologie , Infections à Arenaviridae/épidémiologie , Arenavirus/immunologie , Réservoirs de maladies , Écosystème , Femelle , Technique d'immunofluorescence indirecte , Virus de Lassa/immunologie , Mâle , Muridae/immunologie , Rats , Maladies des rongeurs/épidémiologie , Études séroépidémiologiques , Thaïlande/épidémiologieRésumé
Para los odontólogos dedicados al tratamiento dental infantil, es necesario conocer los posibles riesgos de nuestra terapia, así como los accidentes que pueden ocurrir durante y después de realizada la misma. De esta manera, teniéndolos presentes, así como, conociendo los diferentes tratamientos para solucionar estas emergencias, podremos salvar a nuestro paciente de situaciones que van desde las más leves a aquellas que pueden incluso poner en peligro su vida