Abstract Background The study of parasites provides insight into intricate ecological
relationships in ecosystem dynamics, food web structures, and evolution on multiple scales …

Opossums are the most diverse and ecologically important group of New World marsupials,
although only the Virginia opossum is familiar to North American residents. In fact, many …

Metatherian mammals were taxonomically rich and abundant in Late Cretaceous faunas of
North America. Although much attention has been paid to metatherian taxonomy, a …

Species coexistence involves resource partitioning, even if indirectly. These resources can
fluctuate over time especially in highly seasonal environments such as Caatinga, the largest …

Abstract The Brazilian savanna (Cerrado) is one of the 25 world terrestrial hotspots, which
covers about 2 million km2 and harbors 26 marsupial species inhabiting grasslands …

New World marsupials, a group that includes approximately 130 species and 3 orders, can
be considered mostly omnivorous. Known diets of most species are essentially constituted of …

Phenological studies with species of cactus have grown in recent decades but the number of
species studied remains very low, considering the high species richness of this group. In …

To avoid predation by visual predators, caterpillars can be cryptic to decrease detectability
or aposematic to warn predators of potential unpalatability. However, for some species, it is …

Many gaps remain in understanding species evolution and distribution in Northeast Brazil,
particularly in the Caatinga and Cerrado biomes. Our aims are to increase knowledge about …

Small mammal species may occur in sympatry, and it is relevant to investigate the
mechanisms that lead to coexistence of the closely related species. Despite this, studies …