Navegando por Assunto "Anopheles darling"

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Acesso aberto (Open Access)
Development of the BG-Malaria trap as an alternative to human-landing catches for the capture of Anopheles darlingi
(2013-09) GAMA, Renata Antonaci; SILVA, Ivoneide Maria da; GEIER, Martin; EIRAS, Álvaro Eduardo
Although the human-landing catch (HLC) method is the most effective for collecting anthropophilic anophelines, it has been increasingly abandoned, primarily for ethical considerations. The objective of the present study was to develop a new trap for the collection of Anopheles darlingi . The initial trials were conducted using the BG-Sentinel trap as a standard for further trap development based on colour, airflow direction and illumination. The performance of the trap was then compared with those of the CDC, Fay-Prince, counterflow geometry trap (CFG) and HLC. All trials were conducted outdoors between 06:00 pm-08:00 pm. Female specimens of An. darlingi were dissected to determine their parity. A total of 8,334 anophelines were captured, of which 4,945 were identified as An. darlingi . The best trap configuration was an all-white version, with an upward airflow and no required light source. This configuration was subsequently named BG-Malaria (BGM). The BGM captured significantly more anophelines than any of the other traps tested and was similar to HLC with respect to the number and parity of anophelines. The BGM trap can be used as an alternative to HLC for collecting anophelines.
Acesso aberto (Open Access)
A importância do Anopheles darlingi Root, 1926 e Anopheles marajoara Galvão e Damasceno, 1942 na transmissão de malária no município de Macapá/AP - Brasil
(Universidade Federal do Pará, 2010-03-11) GALARDO, Allan Kardec Ribeiro; PÓVOA, Marinete Marins; http://lattes.cnpq.br/2256328599939923
Malaria in the municipality of Macapá is mainly peri urban, which are characterized by flooding area, presence of forest fragments and disorganized settlements. The aim of this study was to determine the importance of Anopheles darlingi e Anopheles marajoara in the malaria transmission in Macapá. The study was carried out from October 2007 to September 2008, in the Lagoa dos Índios community, Macapá. It was collected 4,601 mosquitoes, from which 3,029 were Anopheles marajoara (65,8%), 917 Anopheles darlingi (19,9%), 429 Anopheles braziliensis (9,3%), 208 Anopheles triannulatus (4,5%), 18 Anopheles peryassui (0,4%) and 5 Anopheles nuneztovari (0,1%). Only 32.8% (1.511) of the adult mosquitoes were collected indoors and 67.2% (3.090) outdoors. The index of the bites by man and by hour for An. darlingi in the intradomicile had ranged from 0 to 6.5 and in the peridomicile from 0 a 22. As for the An. marajoara the range was from 0 to 22 in the intradomicile and from 0 to 175.5 in the peridomicile. The analysis of the exuvia and the genitalia dissecation had resulted in the confirmation of the two species, An. darlingi and An. marajoara, and that the An. marajoara is the only albitarsis complex specie that is circulating in the study area. The vectors abundance had flutuated associated with the sazonal pattern of the rain. An. darlingi is the most frequent at the beginning and end of the rain, while An. marajoara was present, in high density, during the rainy season. From the 4,601 tested mosquitoes, 100 were positive for human malaria parasites by the ELISA method with a infection index of 2.17%. The infection index for An. marajoara was 2,34% (71/3,029) and for An. darlingi 3.05% (28/917). This study had demonstrated that the two studied species are responsible for the malaria transmission maintenance during the whole year, thus confirming the importance of both.
Acesso aberto (Open Access)
Susceptibility of Anopheles aquasalis and An. darlingi to Plasmodium vivax VK210 and VK247
(2006-08) SILVA, Ana de Nazaré Martins da; SANTOS, Carla Christiani Bastos dos; LACERDA, Raimundo Nonato da Luz; MACHADO, Ricardo Luiz Dantas; PÓVOA, Marinete Marins
The susceptibility of Anopheles aquasalis (F3 generation) and An. darlingi (F1 generation) to Plasmodium vivax circumsporozoite protein phenotypes from a limited number of blood samples of malaria patients in Belém, state of Pará, Brazil, was examined. A polymerase chain reaction was used to determine the P. vivax phenotypes in blood samples and the blood-fed infected mosquitoes were dissected and tested by ELISA. In all patient infections, more infected An. aquasalis and An. darlingi were positive for VK210 compared with VK247.