From october 2016 to september 2017 I registred the abiotics factors the White sand forest where alive Aechmea nidularioides, in the Allpauayo Mishana National Reserve (AMNR), by direct observation. Environmental temperature average for AMNR various between 33.8 to 22°C and undergrowth of the White sand forest it was variable with maximum temperature during the day 33.5 to 29.5 °C and minimum temperature 27 to 22.4°C, while what the relative humidity in the Alpahuayo Mishana National Reserve various 94.33 to 74.67%. Rain precipitation in the AMNR for sector PV Irapay it was 3288.5 mm for sectors Llanchama and Mishana (Nanay river) 2725.8 mm the water. Percentage of sunlight in the White sand forest various 10 to 15 % according height, density of the trees and canopy. Come in the biotics factors, flowering occurs only once between february and august; density was variable (n= 45 plots)...

La distribución del ictioplancton en el bajo río Nanay, fue estudiado entre los meses de setiembre del 2001 y Junio del 2002, en tres (03) estaciones: 1) Ninarumi, 2) Santa Clara y 3) Bellavista. Para la colecta, se emplearon redes tipo Tucker Trawl, las horas de muestreo fueron a las 00:00, 06:00, 12:00 y 18:00 horas del día en forma simultánea en las 3 estaciones y dos veces al mes. Paralelo al muestreo de las 12:00 horas se registraron los siguientes parámetros: temperatura del agua, transparencia, turbidez, conductividad eléctrica, sólidos disueltos, pH, O2 disuelto, CO2 libre, Alcalinidad, velocidad de corriente, profundidad promedio, ancho del río y caudal; además, se estimaron la densidad ictioplanctónica por horas del día y estratos y también la productividad ictioplanctónica. Para el análisis estadístico, se empleó el programa SPSS versión 9.0, se consideraron t...

Se determinaron los metazoarios parásitos en Triportheus angulatus (Spix & Agassiz, 1829) adquiridos del mercado “Belén” Iquitos, Perú. Se colectaron 30 individuos de T. angulatus, de las cuales las branquias, musculatura y el tracto digestivo se analizaron con la finalidad de encontrar metazoarios parásitos. Los grupos de parásitos identificados fueron Monogenoidea y Nematoda. De los monogenoideos colectados se prepararon láminas permanentes clarificadas con medio Hoyer para su identificación. En el caso de los nematodos se prepararon láminas semipermanentes clarificadas con ácido láctico. Se calcularon los índices parasitarios como prevalencia, intensidad, intensidad media y abundancia media. Se colectaron 151 individuos metazoarios parásitos en T. angulatus adquiridos del mercado “Belén” Iquitos, Perú de las cuales se identificaron nueve especies de monogenoideos...

Parasitic metazoans were determined in Triportheus angulatus (Spix & Agassiz, 1829) acquired from the "Belén" market in Iquitos, Peru. Thirty individuals of T. angulatus were collected, of which the gills, muscles and digestive tract were analyzed to find parasitic metazoans. The groups of identified parasites were Monogenoidea and Nematoda. Permanent slides cleared in Hoyer's medium were prepared for monogenoids for their identification. In nematodes, semi-permanent slides cleared with lactic acid were prepared. Parasitological indices were calculated for prevalence, intensity, mean intensity and mean abundance. One hundred fifty-one metazoan parasites were collected from T. angulatus acquired from the “Belén” market in Iquitos, Peru. The following monogenoids were identified: Anacanthorus acuminatus Kritsky, Boeger & Van Every, 1992; Anacanthorus chaunophallus Kritsky, Bo...

In the Peruvian Amazon, species of the Cichlidae constitute a valuable resource for fisheries and aquaculture activities. Due to the importance of cichlids in this region and the constant interest in conduct studies focused on the biodiversity of monogenoids, the present study aimed to present a checklist of monogenoids from the gills of cichlids with importance in aquaculture in the Peruvian Amazon. Thirteen species of cichlids were analyzed from November 2020 to May 2023 from different water bodies in the Peruvian Amazon. There were identified five species of Gussevia Kohn & Paperna, 1964; eight morphospecies of Gussevia (Gussevia sp. 1 to sp. 8); four species of Sciadicleithrum Kritsky, Thatcher & Boeger, 1989; eight morphospecies of Sciadicleithrum; one species of Biotodomella Morey, Arimuya & Boeger, 2019 and one species of Trinidactylus Hanek, Molnár & Fernando, 19...