Molecular phylogenetic studies that have included sirenians from the genera Trichechus,
Dugong, and Hydrodamalis have resolved their interrelationships but have yielded …

Trichechus manatus and Trichechus inunguis are the two Sirenia species that occur in the
Americas. Despite their increasing extinction risk, many aspects of their biology remain …

Potamosiren magdalenensis Reinhart, is an extinct species of manatee (Sirenia,
Trichechidae, Trichechinae), which has only been recorded for the middle Miocene Honda …

Although mitochondrial DNA has been widely used in phylogeography, evidence has
emerged that factors such as climate, food availability, and environmental pressures that …

Interspecific hybridization has been historically neglected in research and conservation
practice, but it is a common phenomenon in nature, and several models have been …

Neotropical freshwater stingrays (subfamily Potamotrygoninae) are carnivorous bottom
feeder batoids widely distributed in most river basins of South America. They represent the …

The genetic basis underlying adaptive physiological mechanisms has been extensively
explored in mammals after colonizing the seas. However, independent lineages of aquatic …

The low diversity in marine mammal major histocompatibility complex (MHC) appears to
support the hypothesis of reduced pathogen selective pressure in aquatic systems …

Background Chromosomal painting in manatees has clarified questions about the rapid
evolution of sirenians within the Paenungulata clade. Further cytogenetic studies in …

In this chapter, we consider pathways to work for a future for Amazonia where both humans
and other mammals flourish and the rainforest is protected. First we briefly review the tens of …