ABSTRACT
INTRODUCCIÓN: Aedes aegypti y Aedes albopictus vectores reconocidos de dengue son consideradas especies invasivas que están ampliamente distribuidas en zonas tropicales y parte de regiones templadas del planeta. OBJETIVOS: determinar la relación inter específica de Ae. albopictus con las comunidades de mosquitos de la provincia de La Habana en dos períodos de tiempo, 1995 -1999 y 2010-2012. MÉTODOS: se utilizaron los registros anuales de las muestras larvarias de mosquitos del laboratorio de Entomología de la provincia La Habana que forma parte del Programa Nacional de Control de Ae. aegypti. RESULTADOS: se determinó una coexistencia entre Ae. albopictus y Ae. aegypti al igual que con Culex quinquefasciatus favorecido en el caso de la primera por la fuerte presión con insecticida a que esta sujeta Ae. aegypti durante todo el año y con la segunda por la tolerancia fisiológica a los insecticidas que posee y ser considerada una especie oportunista, mientras que fue evidente el desplazamiento de Aedes mediovittatus por Ae. albopictus en los sitios de cría. CONCLUSIONES: se espera que continúe la coexistencia entre Ae. albopictus y Ae. aegypti en la provincia La Habana debido al ciclo estacional lluvia-seca presente en Cuba, la disponibilidad de criaderos existente producto de deficiencias en el saneamiento ambiental y problemas en el abasto de agua además del control permanente sobre Ae. aegypti que influye solo parcialmente en las poblaciones de Ae. albopictus.
INTRODUCTION: Aedes aegypti and Aedes albopictus recognized dengue vectors are considered invasive species that are widely distributed in tropical and temperate regions of the planet. The current distribution of the two Aedesmosquitoes overlap and are affected by interspecific larval competition in their container habitats. OBJECTIVE: to determine the interspecific relationship of Ae. albopictus with mosquitoes communities in Havana province in Cuba in two time periods , 1995 -1999 and 2010-2012. METHODS: annual records of mosquito larval samples from Entomology Laboratory Havana province were used for this study. RESULTS: coexistence between Ae. albopictus and Ae. aegypti as well as with Culex quinquefasciatus was demonstrated favored in the case of the first by strong insecticide pressure is subject Ae. aegypti throughout the year and the second by be considered an opportunistic species and the physiological tolerance to insecticides reported for it, whereas replacement of Ae. mediovittatus by Ae. albopictus was observed. CONCLUSIONS: our study demonstrated the coexistence between Ae. albopictus and Ae. aegypti in Havana province favored by the rainy - dry seasonal cycle present in Cuba , the availability of existing breeding sites product sanitation deficiencies and problems in the water supply, in addition to the permanent control of Ae. aegypti that only influencing populations of Ae. albopictus partially.
Subject(s)
Humans , Aedes/microbiology , Animal Distribution , Insecticides , Vector Control of Diseases , Cuba , CulicidaeABSTRACT
This paper presents an analysis of the foraging behavior and interactions of Xylocopa frontalis Olivier (Apidae: Xylocopini) and Eulaema mocsaryi (Friese) (Apidae: Euglossini) in the presence of stingless bees (Apidae: Meliponini) in flowers of Bertholletia excelsa, the Brazilian nut. The palynological load carried by both species was also examined. This study was conducted in the farm Aruanã, Itacoatiara/ Amazonas state, Brazil, during the flowering peak of B. excelsa. The visitation by the main pollinators X. frontalis and E. mocsaryi were influenced by the presence and activities of stingless bees in the flowers of B. excelsa. Meliponini bees did not have any effect on the visits and collection of floral resources by X. frontalis, while negatively affecting the number of visits by E. mocsaryi. The stingless bees presented a variety of strategies to get access to pollen grains of B. excelsa, grouped into two categories: opportunism -Frieseomelitta trichocerata Moure, Tetragona goettei (Friese), and Tetragona kaieteurensis (Schwarz), and stealing -Trigona branneri Cockerell, Trigona fuscipennis Friese, and Trigona guianae Cockerell. The palynological analysis from X. frontalis showed that the bee collected pollen in a few species of plants, but mainly on B. excelsa. The pollen grains of B. excelsa were poorly represented in the pollen shipments of E. mocsaryi, due to its large trophic niche in the locality.