Abundancia estacional de Diaphorina citri asociada a la fenología del cultivo de cítricos

Estimación del Coste de la Calidad del Software a través de la Simulación del Proceso de Desarrollo

Some of the main objectives of quality assurance practices are to detect and correct the errors that arise during the development of a software product, as well as to guarantee that the final product conforms to the client’s requirements. Quality initiatives suppose an added cost to the software development projects, cost that is totally justified but which, in most of the cases, is the first o...

Batrachochytrium dendrobatidis y el Colapso de la Riqueza de Especies y Abundancia de Anuros en el Parque Nacional del Manu, Sureste de Per

Amphibians are declining worldwide, but these declines have been particularly dramatic in tropical mountains, where high endemism and vulnerability to an introduced fungal pathogen, Batrachochytrium dendrobatidis (Bd), is associated with amphibian extinctions. We surveyed frogs in the Peruvian Andes in montane forests along a steep elevational gradient (1200–3700 m). We used visual encounter su...

Estructura trófica de la asociación de peces intermareales de la costa rocosa del norte de Chile

The trophic relationships of 13 intertidal fish species collected in northern Chile (20°18’S and 20°54’S) from July 1997 to July 1998, the stomach content analysis of 820 specimens, were investigated. The importance of the prey items was assessed by means of gravimetric and frequency of ocurrence methods, together with the Shannon-Wiener (trophic diversity) and Pianka (trophic overlap) indexes....

Description de Hyalomma dromedarii (Koch 1844) Morphologie de la larve et de la nymphe

letude de la typologie narrative de mort a credit de louis ferdinand celine

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