Flebotomíneos (Diptera, Psychodidae) de matas de Terra firme e de Várzea, do município de paragominas, estado do Pará, Brasil

Abstract

RESUMO -Neste trabalho, a riqueza e a abundância das espécies de Lutzomyia foram estudadas nas matas secundárias de terra firme e de várzea, no município de Paragominas, Estado do Pará. Os fiebotomíneos foram capturados das 18 às 6 horas em armadilhas luminosas CDC. Foram capturados 1.184 exemplares de 32 espécies, sendo 680 machos e 504 fêmeas. Na mata de terra firme foram encontradas 942 espécimens de 31 espécies, sendo as mais comuns L.complexawellcomei (3,3%). As demais espécies representaram juntas 19,2%. Na estação chuvosa a riqueza (24 espécies) e a abundância das espécies (38,8 espécimens/armadilha/noite) foram maiores do que na seca (16 espécies e 13, 83 espécimens/armadilha/noite). Na mata de várzea foram capturados 242 espécimens de 12 espécies, o domínio foi de L. saulensis (46,7%), L.complexa (36%) e L. shawi (7,4%). As demais espécies representaram juntas apenas 9,9%. A riqueza de espécies (9) foi maior na estação chuvosa do que na seca (6), mas a abundância de espécimens foi maior no período seco (6,5 espécimens/ armadilha/noite) do que no chuvoso (5,85 espécimens/armadilha/noite). ABSTRACT -In this work, the richness and relative abundance of species of the genus Lutzomyia, in the "várzea" and "terra firme" secondary forests, in the municipal district of Paragominas, Pará State were studied. The sandflies were captured from 6:00 P.M. to 6:00 A.M. with CDC light-traps. A total of 1,184 specimens and 32 species were captured, being 680 males and 504 females. In the "terra firme" forest 942 specimens of 31 species were captured. L.complexa was the more frequent species, being represented by 41.1% of the captured speci mens, followed, in order of importance by L. corossoniensis L. davisi (3.5%) and L. wellcomei (3.3%). The other species represented 19.2%. In the rainy season the species richness (24) and abundance (38.8 specimens/light-trap/night) were higher than the dry season (16 spe cies and 13.83 specimens/light-trap/night). In the "várzea" forest 242 specimens of 12 species were captured. The dominant species were L. saulensis (46.7%), L.complexa (36%) and L. shawi (7.4%). The others species represented 9.9%. The species richness (9) was higher in the rainy season than the dry season (6), but the specimen abundance was higher in the dry period (6.5 specimens/light-trap/night) than the rainy season (5.85 specimens/light-trap/night). Palavras-chave:

Ecological aspects and molecular detection of Leishmania DNA Ross (Kinetoplastida: Trypanosomatidae) in phlebotomine sandflies (Diptera: Psychodidae) in terra firme and várzea environments in the Middle Solimões Region, Amazonas State, Brazil

“…This highlights the possibility that these species may participate in the transmission of ACL in both of the environments studied in Tefé. Some studies of fauna in the várzea environment have identified insects of medical importance, such as mosquitoes and biting midges [ 45 - 47 ]; however, there is little information about sand flies [ 48 ]. This is because the várzea environment is difficult to access during rainy seasons, and because flooding makes field work more arduous; yet flooding may have a direct impact on the habitats of insect fauna.…”

Vertical stratification of sand flies (Diptera: Psychodidae) in riparian forests between the Amazon and northeast Brazil

“…Lu. infraspinosa , the third most abundant species, is attracted to rodents (Ready et al ) and occurs at ground level in forests, including forests in the states of Maranhão (Rebêlo et al ) and Pará (Rebêlo and Oliveira‐Pereira ). In the present study, this species was found between 5 m and 10 m, as previously observed in the Amazon where it can occur at up to 20 m (Dias‐Lima et al ).…”

“…In the Amazon, Lu. flaviscutellata flies occur at ground level (Dias‐Lima et al , Rebêlo and Oliveira‐Pereira ). This behavior explains its attraction to rodents observed in the Amazon and in the savannas of the state of Mato Grosso do Sul (Dorval et al ), where Lu.…”

Dinâmica espaço-temporal de flebotomíneos (Diptera, Psychodidae) do município de Santa Quitéria, área de cerrado do Estado do Maranhão, Brasil

“…A distribuição de L. complexa está limitada à Bacia Amazônica, incluindo os estados de Rondônia (BIANCHARDI et al, 1982), Mato Grosso (LAINSON et al, 1976) e Pará (FRAIHA et al, 1978). Mais recentemente foram coletados machos e fêmeas, nas estações de estiagem e chuvosa, no município de Paragominas, PA (REBÊLO & OLIVEIRA-PEREIRA, 2001). No que concerne ao Maranhão, esta espécie foi detectada nas matas amazônicas de Buriticupu, não tendo registro para o nordeste do Estado.…”