Distribuição e potencial de invasão do sagui Callithrix penicillata (É. Geoffroy, 1812) no território brasileiro

Abstract

Over the years humans have transported species purposeful or unnoticed out of its natural range. Introduced species can bring environmental and economic damages and are the second leading cause of biodiversity loss, being surpassed only by suppressing environments. Primates have always maintained a very close relationship with humans facilitating them to be transported out of their natural limits. The Callithrix penicillata species typically occurs in the cerrado and is reported as invasive in several states of the country, its population has made becoming a problem for conservation because of its high potential for occupation, native wildlife predation and competition with native hybridization counterparts. To initiate management actions we need to know the locals already invaded and possible invasion, thus the potential distribution modeling (MDP) based on ecological models niche, it has proved a fast, reliable and cost to identify areas with greater probability of some sort. In this study we used the potential distribution modeling (MDP) to identify areas with higher probability of occurrence of a species through the Maxent software (Maximum Entropy). This work aims to know the invasion potential of the species in Brazil. And the following objectives know the current distribution of C. penicillata marmoset and confront with that found in the literature, know the areas most susceptible to invasion and discuss the problem that the introduction of this species has caused in the regions where it is an invasive species. The value found was AUC = 0.966 for training data and AUC = 0919 for the test data with the value very close to curve 1. At Jackknife test, we found that the most correlated variable distribution was seasonality temperature (AUC = 0, 86), coinciding with other studies showing that environmental factors influence the distribution of primates. The most frequently mentioned site susceptible to invasion was the Atlantic Forest of the Southeast region followed by the South. The Atlantic Forest for having high levels of endemism, and the South and Southeast regions to have higher population concentration, contribute to the biological invasion of marmosets are become a concern.