Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
J Med Entomol ; 56(6): 1565-1570, 2019 10 28.
Artigo em Inglês | MEDLINE | ID: mdl-31227827

RESUMO

Triatominae bugs (Hemiptera: Reduviidae) are usually associated with different vertebrate species, upon which many of them feed. Yet how these different blood meal sources influence key biological parameters is rarely investigated for triatomines. To fill this knowledge gap, this study sought to determine the effect of a domestic rat species (Rattus norvegicus Berkenhout (Rodentia: Muridae)), a domestic mice species (Mus musculus L. (Rodentia: Muridae)), and chickens (Gallus gallus domesticus L. (Galliformes: Phasianidae)), as blood meal sources upon several biological parameters (development time, number of required blood meals to moult and feeding and defecation behaviors) of the Mexican major vector Triatoma barberi Usinger. The three studied cohorts' development times were similar (325-338 d), but the number of required blood meals to moult (21), as well as the total mortality rate (26%), were both the highest in the cohort that fed on chickens. The longevity of females (186-190 d) was similar among the three studied cohorts, as was that of males. The median time elapsed between the presentation of a blood meal source and onset of feeding (10 min) was similar among the three studied cohorts, as were their feeding times and defecation patterns. Most of our studied parameters demonstrate how T. barberi can effectively take advantage of feeding on rodents as much as it does on hens. Those parameter results also show that T. barberi should be considered as a potential yet underappreciated vector in some areas, thus warranting a surveillance program of its current distribution area in Mexico.


Assuntos
Insetos Vetores/fisiologia , Características de História de Vida , Triatoma/fisiologia , Animais , Doença de Chagas/transmissão , Galinhas , Defecação , Comportamento Alimentar , Feminino , Insetos Vetores/crescimento & desenvolvimento , Longevidade , Masculino , Camundongos , Ninfa/crescimento & desenvolvimento , Ninfa/fisiologia , Ratos , Triatoma/crescimento & desenvolvimento
2.
Interface Focus ; 1(2): 263-70, 2011 Apr 06.
Artigo em Inglês | MEDLINE | ID: mdl-22482033

RESUMO

This paper synthesizes lessons learnt from research that aimed to identify land in the dryland regions of eight sub-Saharan African study countries where bioenergy feedstocks production has a low risk of detrimental environmental and socio-economic effects. The methodology involved using geographical information systems (GISs) to interrogate a wide range of datasets, aerial photograph and field verification, an extensive literature review, and obtaining information from a wide range of stakeholders. The GIS work revealed that Africa's drylands potentially have substantial areas available and agriculturally suitable for bioenergy feedstocks production. The other work showed that land-use and biomass dynamics in Africa's drylands are greatly influenced by the inherent 'disequilibrium' behaviour of these environments. This behaviour challenges the sustainability concept and perceptions regarding the drivers, nature and consequences of deforestation, land degradation and other factors. An assessment of the implications of this behaviour formed the basis for the practical guidance suggested for bioenergy feedstock producers and bioenergy policy makers.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...