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Previous issue date: 2006-12-15 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The larval instars, seasonal occurrence and environmental factors influence on Psaroniocompsa incrustata (Lutz, 1910) (Diptera: Simuliidae) immature were studied according to its physical and chemical aspects of breeding water. Four collects were made at vegetal substrate from margin, middle and floating on the Pium river, city of N?sia Floresta, state of Rio Grande do Norte, Brazil at dry and wet season. Some of larval characters were used to determinate the larval instars number like lateral length of cephalic capsulae, antennae and the distance among cephalic apodema, as well as pH, water temperature, width, depth, stream velocity, discharge and pluviometric precipitation were used for physical factors. Seven larval instars were determined for this P. incrustata community being the lateral length of cephalic capsulae as the best structure with this meaning propose. The seasonality immature abundance of this species were found in dry season and a positive correlation with pH, stream velocity and precipitation / A esp?cie Psaroniocompsa incrustata (Lutz, 1910) (Diptera: Simuliidae) foi estudada quanto ao n?mero de est?dios larvais, ocorr?ncia sazonal e a influ?ncia dos fatores ambientais sobre os imaturos, com a caracteriza??o f?sica e qu?mica da ?gua do criadouro. A pesquisa em campo foi realizada no rio Pium, munic?pio de N?sia Floresta, estado do Rio Grande do Norte, Brasil. Para per?odos distintos (chuva / seca) ocorreram quatro coletas. As coletas dos imaturos de P. incrustata foram feitas diretamente do substrato vegetal localizados ?s margens, no leito e ? deriva do rio. Para a determina??o dos est?dios larvais foram mensurados o comprimento lateral da c?psula cef?lica, da antena e da dist?ncia entre os ap?demas cef?licos. Foram registrados: pH, temperatura da ?gua, largura, profundidade, velocidade, vaz?o e precipita??o pluviom?trica. Sete est?dios larvais foram determinados para esta popula??o de P. incrustata, sendo o comprimento lateral da c?psula cef?lica a estrutura que melhor delimitou os est?dios. A abund?ncia dos imaturos de P. incrustata variou sazonalmente, encontrando-se em maior quantidade no per?odo de seca, correlacionando-se de forma significativa com o pH, velocidade da ?gua e precipita??o pluviom?trica
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12511 |
| Date | 15 December 2006 |
| Creators | Silva, Adriele Noronha Barbosa da |
| Contributors | CPF:24322253415, http://lattes.cnpq.br/0984577704595246, Chellappa, Naithirithi Tiruvenkatachary, CPF:20016581415, http://lattes.cnpq.br/1365437036105422, Medeiros, Jansen Fernandes, Andrade, Herbet Tadeu de Almeida |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Bioecologia Aqu?tica, UFRN, BR, Bioecologia Aqu?tica |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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