El presente trabajo de investigación “Efecto del guano de isla en el rendimiento del cultivo de vainita (Phaseolus vulgaris L.) Variedad jade, en condiciones agroecológicas de Huacrachuco – Marañón – 2018. El objetivo general fue determinar el efecto del guano de las islas en el rendimiento del cultivo de (Phaseolus vulgaris L.). Para alcanzar el objetivo planteado, se utilizó el Diseño de Bloques Completamente al Azar con 4 tratamientos, 4 repeticiones y 16 individuos por cada tratamiento. La variedad utilizada en la presente investigación fue la variedad Jade. Para llegar a los objetivos se planteó cuatro variables de respuesta las cuales son: Altura de planta, longitud de vainas por planta, número de vainas por planta y peso de vainas por planta, cuyos datos se analizaron con la técnica de ANDEVA y para la discriminación de los promedios se utilizó la prueba de signi...

Vultur gryphus (Linneaus, 1758) is distributed throughout the entire length of the Andes mountain ranges, however, habitat destruction, overpopulation, agriculture and among other factors have fragmented its habitat, causing this to affect its population and placing it in the low red book the Endangered category (EN); the fragmentation of its habitat does not allow the condor to find nesting places and can increase its population, this brings the reduction of genetic variability, genetic diversity, mutation, among others. The objective is to recognize the effects of fragmentation in relation to the population genetic variability and conservation of the Andean condor in Peru. An extensive search for information was carried out in Google search engine, ResearchGate, Scielo and Redalyc, of publications in English or Spanish between 1980 - 2020, in which different search terms were used such...

Vultur gryphus (Linneaus, 1758) is distributed throughout the entire length of the Andes mountain ranges, however, habitat destruction, overpopulation, agriculture and among other factors have fragmented its habitat, causing this to affect its population and placing it in the low red book the Endangered category (EN); the fragmentation of its habitat does not allow the condor to find nesting places and can increase its population, this brings the reduction of genetic variability, genetic diversity, mutation, among others. The objective is to recognize the effects of fragmentation in relation to the population genetic variability and conservation of the Andean condor in Peru. An extensive search for information was carried out in Google search engine, ResearchGate, Scielo and Redalyc, of publications in English or Spanish between 1980 - 2020, in which different search terms were used such...

Albino fish have greater economic value than fish that have coloration both at the ornamental level and at the consumption level for their meat. Th e slc45a2 gene is associated with the induction of an albinism phenotype initially reported in Zebrafish (Danio rerio Hamilton, 1822) and Medaka fish (Oryzias latipes Temminck & Schlegel, 1846). With the information registered in the Genbank of the slc45a2 gene of the Tilapia fish (Oerochromis niloticus Linnaeus, 1758) and the Gamitana (Colossoma macropomum Bleeker, 1869), specific primers were designed in silico to identify this gene in these two freshwater species. Both sets of primers were used fi rst on these two species (Tilapia and Gamitana). And then tested in the fi sh Paco (Piaractus brachypomus Cuvier, 1818) and Oscar (Astronotus ocellatus Agassiz, 1831) whose slc45a2 gene sequences are currently unknown. With the set of primers...