It is an initiative that was born with the purpose of generating an ultrasonic library of bats from Peru. More than one year has been developing inventories in various departments of Peru, such as Lima, Iquitos, Tacna and Cajamarca.
This project is led by Edgardo M. Rengifo, in collaboration with two researchers: Jaime Pacheco and Jorge Ruiz Leveau.
One of the works that is currently being carried out is “Wealth of aerial insectivorous bats characterized in the urban and peri-urban area of Iquitos, using the acoustic method”, which is being developed by Jorge Ruiz Leveau. The sampling sites for the urban area were Plaza Rio Mar, Plaza Grau, Plaza 28 de Julio, Plaza de Armas, Sargento Lores urbanization; and for the periurban area Santo Tomas, Zungarococha, Manacamiri, Ninarrumi and Santa Clara, to obtain the calls of the bats, the ultrasound detector Pettersson D240x and M500-384 (Pettersson Electronik AB, Uppsala, Sweden) are being used, which are analyzed with the Avisoft SASLab Lite program, for the identification different characteristics are taken into account, such as the shape of the pulses which determines the family, the parameters of the main components were measured, such as initial frequency, characteristic frequency, final frequency , pulse duration, pulse interval, and bandwidth.
So far, a total of 15 species of insectivorous bats have been identified; among these we have: Molossidae: Molossus molossus, Molossus Rufus, Nyctinomops macrotis, Nyctinomops laticaudatus, Nyctinomops aurispinosus, Eumops sp., Promops centralis, Vespertilionidae: Myotis nigricans, Myotineais albesteryns, Myotcopallis ripariidae, Rhynxteryinchumidum, Embcterinchuraxteryidae, Myotcopteryxipariidae. Noctilionidae: Noctilio albiventris, Noctilio leporinus.