Problema. El río Ramis viene sufriendo la contaminación por metales pesados debido a la actividad minera, incumpliendo con el tratamiento adecuado de sus residuos sólidos y efluentes líquidos, que muchas son vertidos a los ríos ocasionando impactos ambientales negativos en la zona de influencia, a pesar de que el Estado promociona el uso de la Biotecnología para proteger la salud pública y el ambiente. Los objetivos específicos fueron: evaluar los reportes de contaminación ambiental minera realizadas por las entidades ambientales estatales referente a la presencia de metales pesados en el río Ramis y analizar el incumplimiento del Estado y las entidades competentes del Perú del Artículo N° 105 de la Ley General del Ambiente N° 28611 en la protección del río Ramis. Metodología. Se realizó una investigación jurídica propositiva, de enfoque cualitativo, mediante la búsq...

The aim of the study was to evaluate the haematobiochemical parameters of rainbow trout (Oncorhynchus mykiss, Walbaum, 1792) cultured in floating cages at the Ojherani population centre in Lake Titicaca (Puno, Peru), according to sex and body length. Thirty individuals were captured at random. Blood samples were collected for protein, cholesterol and glucose analysis by photometric determinations. Serological values according to sex were protein 25.61 and 15.53 g/l, cholesterol 7.01 and 6.65 mmol/l and glucose 4.34 and 5.75 mmol/l for females and males, respectively. Serum protein values were significantly higher in females (p=0.0027) and glucose in males (p=0.0040). There were no statistical differences due to the effect of length.

The objective of this study was to evaluate the spatial distribution and abundance of the only species of freshwater sponge from Lake Titicaca, Balliviaspongia wirrmanni, in the Titicaca National Reserve (RNT). The evaluations were carried out in the aquatic ecosystem of Lake Titicaca, through the random application of quadrats of one m2. In each individual cattail (Schoenoplectus tatora) present in each quadrat, the presence of sponges was evaluated to perform the count. The results were contrasted according to time periods and study areas. Average sponge counts were higher in the RNT zone, with 485 sponges, and lower in the Puno - Capachica zone, with 47 sponges (P < 0.001), with uniform and contagious Morisita dispersion indices, respectively. The abundance was higher in the RNT area with 43.35%, in the months of July and August. The obtained data suggest that sponges prevail in re...