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1.
J Environ Biol ; 2003 Oct; 24(4): 477-82
Artigo em Inglês | IMSEAR | ID: sea-113209

RESUMO

Role of habitat-structure and climatic factors in the population dynamics of the small green bee-eater Merops orientalis was evaluated in three habitats viz., agricultural lands, river banks and human habitations during 1991-1993. The river banks supported relatively high population of bee-eaters (157/Km2) followed by the agricultural lands (101/Km2) and human habitations (58/Km2). Bee-eater populations showed year-wise variations in river banks and human habitations having high values during 1992 (123/Km2) and 1993 (43/Km2) respectively. Agricultural lands showed a significantly low mean density in 1991 than other years. Seasonal variations in the bee-eater densities among the habitats were also recorded. Vegetation structure, food (insects) availability, climatic conditions and human disturbance were the casual factors for variations in bee-eater populations.


Assuntos
Animais , Aves/fisiologia , Meio Ambiente , Índia , Densidade Demográfica , Dinâmica Populacional , Estações do Ano
2.
Indian J Exp Biol ; 2003 Jun; 41(6): 655-8
Artigo em Inglês | IMSEAR | ID: sea-58599

RESUMO

A new second generation anticoagulant rodenticide, difethialone (0.0025%), was evaluated in the rice fields at three different cropping stages, viz. Milky, Panicle formation and Panicle maturation, during Kuruvai and Thaladi seasons. The difethailone (0.0025%) yielded satisfactory control success suggesting a great potential as a rodenticide especially in the early stages of rice.


Assuntos
4-Hidroxicumarinas/farmacologia , Anticoagulantes/farmacologia , Produtos Agrícolas , Oryza , Rodenticidas/farmacologia
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