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Previous issue date: 2011-02-24 === The scarcity of occurrence records of culicid species, transmitting insects of etiologic agents
for arboviruses, protozoan diseases and philarioses, and lack of information about their
interactions with the forest environment make the Caatinga one of the most unknown biomes
in Brazil. The aim of this study was to identify culicid species in a conservation unit located
in a preserved area of the Caatinga and the possible associations with local abiotic factors, as
well as characterize the natural and artificial ecotopes present in the Caatinga of Rio Grande
do Norte state. The Ecological Station of Serido (ESEC-Serid?) is a Caatinga Conservation
Unit located in a rural area of Rio Grande do Norte. The hot and dry climate of the Caatinga,
along with a short rainy season, favor the adaptation and resistance of plants, resulting in
completely distinct landscapes over the course of the year. The study took place over the
course of one year, with monthly collections between 10h-12h, 14h-16h and 18h-20h. Adult
mosquitoes were collected in a forest area using a manual suction trap with human bait as
attractant at the three times and a Shannon trap for night collections. During the rainy season
ovitraps were randomly distributed at different sites. The different capture sites were observed
and photographed. Immature and adult insects captured were taken to the laboratory for
identification. Of the 5081 insects collected in human-bait and Shannon traps, 75% were
Mansonia wilsoni. In addition, Aedeomyia, Aedes, Anopheles, Coquillettidia, Culex,
Haemagogus, Mansonia and Psorophora were identified. Of the 92 Haemagogus eggs found,
71 were collected on the banks of a reservoir. Mosquito larvae were found and photographed
in an artificial breeding site of a neighboring rural area. Humidity had the greatest influence
on culicid density in the Caatinga. Rain was important in the appearance of Haemagogus,
Anopheles, Aedes and Psorophora. Temperature had a negative influence on Anopheles
triannulatus. The occurence of important vector species of diseases in a little known
preserved area of the Caatinga as well as environmental and sociocultural questions are
factors that favor the emergence of transmitting insects, making these areas potential subject
to the resurgence of diseases === A raridade de registro de ocorr?ncia de esp?cies de culic?deos, insetos veiculadores de agentes
etiol?gicos de arboviroses, protozooses e filarioses, aliada ? inexist?ncia de informa??es sobre
as intera??es destes com o ambiente silvestre contribui para tornar a Caatinga um dos Biomas
mais desconhecidos do Brasil. Este estudo teve como objetivo identificar esp?cies de
culic?deos em uma ?rea preservada de Caatinga, as poss?veis associa??es destes com fatores
abi?ticos locais e a caracteriza??o dos ec?topos naturais e artificiais existentes na Caatinga do
Serid? potiguar. A Esta??o Ecol?gica do Serid? (ESEC-Serid?) ? uma Unidade de
Conserva??o da Caatinga situada em uma ?rea rural no interior do Estado do Rio Grande do
Norte. O clima quente e seco com um curto per?odo chuvoso favorece a adapta??o de
vegetais, resultando em paisagens distintas ao longo do ano. O estudo ocorreu ao longo de um
ano, com coletas mensais, nos intervalos entre 10h-12h, 14h-16h e 18h-20h. Os mosquitos
adultos foram coletados em ?rea de mata com um sugador manual com atrativo humano nos
tr?s hor?rios, uma armadilha Shannon tamb?m foi utilizada nas coletas noturnas. Durante o
per?odo chuvoso ovitrampas foram distribu?das aleatoriamente em diferentes pontos. Os
diferentes locais de captura foram observados e fotografados. Os imaturos e adultos
capturados foram levados ao laborat?rio para identifica??o. De 5081 f?meas coletadas em
isca-humana e armadilha Shannon, 75% pertencem a esp?cie Mansonia wilsoni e foram
identificados 8 g?neros Aedeomyia, Aedes, Anopheles, Coquillettidia, Culex, Haemagogus,
Mansonia e Psorophora. Dos 92 ovos de Haemagogus encontrados, 71 foram ? margem do
a?ude. Larvas de mosquitos foram encontradas e fotografadas em criadouro artificial de uma
?rea rural vizinha. O fator que mais influenciou na densidade de culic?deos na Caatinga foi a
umidade. A chuva foi importante no aparecimento dos g?neros Haemagogus, Anopheles,
Aedes e Psorophora. A temperatura influenciou negativamente Anopheles albitarsis. A
ocorr?ncia de importantes esp?cies vetoras de doen?as em uma ?rea preservada e pouco
conhecida da Caatinga associada ?s quest?es ambientais e socioculturais s?o fatores que
favorecem o aparecimento de insetos transmissores, tornando essas ?reas potencialmente
sujeitas ao ressurgimento de doen?as ===
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