The Iargest number of eggs collected from "taricaya" P. unifilis corresponds to the Samiria river basin with approximately 89,934 units of eggs and the most number of eggs uses are reported in the Yanayacu Pucate river basin with approximately 82,050 units; in the Samiria river basin was reported the largest releases of hatching to the natural environment, the correlation between the number of eggs collected and the number of eggs used was higbJy significant only in the Y anayacu Pucate river basin. In the study period to access the formal use "taricaya" was submitted l3 proposals for management plans (8 in the Pacaya basin, 2 in the Yanayacu Pucate basin, 02 documents aquatic turtle management, O 1 in the Pacaya basin and O 1 in the Samiria river). The Paca ya basin reported the most number of alevinos of "arahuana" O. bicirrhosum extracted from the three basins are significant differen...

Realizan una descripción de una serie de estudios desarrollados por estudiantes de la Facultad de Ciencias Biológicas sobre el “tucunaré”, entre los que destaca la adecuación e implementación de estanques para reproductores, preferencias de sustrato para el desove, efecto de la densidad de siembra en el crecimiento y sobrevivencia de alevinos en jaulas flotantes, calidad de agua en el manejo de reproductores, parámetros limnológicos que influyen en el manejo de alevinos en peceras de vidrio, lo que nos ha permitido obtener mayores conocimientos de la especie en condiciones controladas.

El presente estudio tuvo por objetivo conocer la relación de los parámetros físicos y químicos en la pesquería del río Ucayali (Perú) entre los años 2005 al 2015. A partir de una base de datos generada con los registros de parámetros fisicoquímicos del agua y volúmenes de desembarque del alto, medio y bajo Ucayali, información proporcionada por la Direcciones Regional de Salud y de la Producción de Loreto y Ucayali. Luego, se hizo el análisis descriptivo, inferencial y relación (correlación y análisis de componentes principales – ACP). Los resultados muestran que los desembarques estuvieron compuestos por 64 especies, del cual, el 76.56% fueron especies pequeñas. Asimismo, el desembarque anual fue de 8 019.87 t, con registros diferentes en cada tramo (P<0.05), siendo Prochilodus nigricans (24.94%), Potamorhina altamazonica (8.19%) y Pseudoplatystoma punctifer (6.71%) ...

This study on the perception of fish behavior in relation to the hydrological period has been carried out in kukama-kukamiria communities located in Bajo Huallaga, Bajo Marañón and Bajo Ucayali, in the Loreto Region. The main objective is to describe local knowledge about the behavior of aquatic fauna during hydrological variations in the Peruvian Amazon. This is a qualitative, ethnographic research that used the semi-structured interview technique, using an interview guide as a data collection instrument. 15 expert kukama fishermen were interviewed. The life cycle of fish is interpreted in relation to fluctuations in the river cycle. It is concluded that the Kukama have excellent traditional knowledge about the behavior of fish, not only due to the constant practice of fishing, but also because this knowledge is part of the traditional knowledge transmitted from generation to generati...

Termites are ecosystem engineers whose nest-building activities alter soil structure and nutrient cycling. In this study, we assessed the characteristics and diversity of nest-building termite assemblages in a white-sand forest fragment near Iquitos, Loreto, Peru. We surveyed ten 30 × 30 m plots in the forest to quantify nest density, taxonomic composition, nest-type, botanical substrates, nest coloration, and spatial variation in nest abundance. A total of 156 nests were recorded, representing five genera: Nasutitermes, Embiratermes, Coptotermes, Constrictotermes, and Termes. The most common botanical substrates associated with nest building belonged to the families Euphorbiaceae, Moraceae, and Fabaceae, particularly Alchornea triplinervia. Most nests were arboreal (58,0%) and dark brown in color (57,05%). Nest abundance increased significantly with greater distance from the road. In c...