Indicators sand flies and environment associated to spatial landscaping change in Choco Biosphere Reserve UNESCO.

ABSTRACT

BACKGROUND OBJECTIVES: Sand flies are insects vector associated with terrestrial forest ecosystems; in the Ecuadorian Andes, they participate in the transmission of human cutaneous leishmaniasis. This geographical area is an opportunity to evaluate the role of sand flies as bioindicators od the degree of intervention of a tropical humid forest ecosystems (THF) associated with changes in the ecology of the local landscape. METHODS: CDC-light traps were used for collecting adults' sand flies in February 2020 in a humid tropical forest within Choco Biosphere Reserve. All species were identified using morphological keys. Analysis data about abundance, richness, species accumulation, diversity index, species composition communities, species sex proportion, spatial sand flies environmental, Renyi's Diversity Profile were performed to compare six spatial habitats in Mashpi locality, Ecuador. RESULTS: Sand flies were collected (n-1435); the main species are represented by Th. reburra Ny. trapidoi, Pa. aclydifera, Py. panamensis and Lu. hartmanni. Only Th. reburra is associated with not intervened forest, while the other 3 species are associated with intervened forest within Mashpi in the Choco Biosphere Reserve. The secondary forest has the major sandflies' richness, while the primary forest exhibits the major abundance. INTERPRETATION CONCLUSION: The results indicated that Th. reburra is a sandfly restricted to the Andean Forest and is a bioindicator of the high environmental health quality of the forest, while Ny. trapidoi and Pa. aclydifera are bioindicators of environmental disturbances in the forest. Additionally, Ps. panamensis, Lu. hartmanni and Ny. trapidoi are bioindicators of human impact and the risk of leishmaniasis.