Evaluation of Mosquito (Diptera: Culicidae) Species Richness using Two Sampling Methods in the Hydroelectric Reservoir of Simplício, Minas Gerais, Brazil

Abstract

We compared two types of light traps used for monitoring mosquito abundance in the hydroelectric reservoir of Simplício, Além Paraíba - Minas Gerais. Mosquitoes were captured bimonthly using automatic CDC and Shannon traps before the filling of the hydroelectric plant reservoir from December 2008 to December 2009. In total, 1474 specimens from 13 genera were captured. Among the captured specimens, several species known to be vectors of disease-causing agents for humans and/or animals were identified, including Anopheles aquasalis, Aedes albopictus, Coquillettidia venezuelensis, Haemagogus leucocelaenus, and Aedes scapularis. Sampling efficacy between the four capture sites was not found to be significantly different, irrespective of species captured or type of trap used. Poor correlation (r (x, y) = -0.0444) between the number of mosquito species and capture site was observed when not influenced by the type of trap used. Among the installation sites of the CDC and Shannon traps in the areas investigated, CDC traps fixed in livestock shelters obtained an overall higher abundance of species captured.

Mosquito fauna of the Guapiaçu Ecological Reserve, Cachoeiras de Macacu, Rio de Janeiro, Brazil, collected under the influence of different color CDC light traps

“…leucocelaenus , are diurnal and this is an uncharacteristic behavior (Forattini ). Similar behavior was observed by Alencar et al () for Hg. leucocelaenus , a potential vector of yellow fever in the area of the Simplício Power Plant, Minas Gerais, Brazil, where some specimens were collected in CDC traps.…”

Is there an efficient trap or collection method for sampling Anopheles darlingi and other malaria vectors that can describe the essential parameters affecting transmission dynamics as effectively as human landing catches? - A Review

“…Among baited traps, Shannon-type tent traps are widely used and can use a human individual, an animal or light as attractant (Shannon 1939, Service 1977, Dutra et al 1996, Alencar et al 2012). Shannon-type tent traps making use of light as the only attractant may show a discrepancy in anthropophilic anopheline yields.…”

“…Nonetheless, we classified light as a physical attractant due to the physical nature of the lamps used as light sources in traps. Insect light receptors are sensitive to wavelengths between 350-600 nm (Brioscoe & Chittka 2001, Alencar et al 2012) and light traps use lights with specific wavelengths to attract insects, including mosquitoes (Silveira-Neto et al 1976, Forattini 2002). Light traps were first used in the United States of America (USA) in 1928 (Headlee 1928).…”

Ecosystem diversity of mosquitoes (Diptera: Culicidae) in a remnant of Atlantic Forest, Rio de Janeiro state, Brazil

“…In areas under the influence of the hydroelectric reservoir of Simplício, Minas Gerais, Alencar et al . (2012) used CDC and Shannon light traps as sampling methods and found that the pattern of species richness for mosquitoes from different capture points was strongly influenced by the predominance of Coquillettidia fasciolata (Lynch Arribálzaga, 1891). In contrast to the results from Poço das Antas, where the highest population of mosquitoes was captured with the CDC traps, Alencar et al .…”

“…In contrast to the results from Poço das Antas, where the highest population of mosquitoes was captured with the CDC traps, Alencar et al . (2012) captured a higher number of specimens with Shannon light traps.…”