GnRH and sex steroids play an important role in immune system modulation and development.
GnRH and the GnRH receptor are produced locally by immune cells, suggesting an …

Inference and estimates of abundance are critical for quantifying population dynamics and
impacts of environmental change. Yet imperfect detection and other phenomena that cause …

An updated version of the checklist of birds of Brazil is presented, along with a summary of
the changes approved by the Brazilian Ornithological Records Committee’s Taxonomy …

The tropics are the source of most biodiversity yet inadequate sampling obscures answers to
fundamental questions about how this diversity evolves. We leveraged samples assembled …

Avian diversification has been influenced by global climate change, plate tectonic movements,
and mass extinction events. However, the impact of these factors on the diversification of …

Users and Internet service providers (ISPs) are constantly affected by denial-of-service (DoS)
attacks. This cyber threat continues to grow even with the development of new protection …

Instances of recent and rapid speciation are suitable for associating phenotypes with their
causal genotypes, especially if gene flow homogenizes areas of the genome that are not …

We reviewed the occurrences and distributional patterns of migratory species of birds in Brazil.
A species was classified as migratory when at least part of its population performs cyclical…

Psittaciformes (parrots, cockatoos) are among the most endangered birds, with 31% of
Neotropical species under threat. The drivers of this situation appear to be manifold and mainly of …

INTRODUCTION Organisms in the early stages of speciation provide an opportunity to
understand the processes that govern reproductive isolation between taxa. Ecological or …