The reproductive diversity of extant cartilaginous fishes (class Chondrichthyes) is
extraordinarily broad, reflecting more than 400 million years of evolutionary history. Among …

The freshwater stingrays of the subfamily Potamotrygoninae occupy a variety of habitats in
Neotropical rivers, where they feed primarily on benthic prey. Prior work on these stingrays …

Habitat transitions are key potential explanations for why some lineages have diversified
and others have not—from Anolis lizards to Darwin's finches. The ecological ramifications of …

The diversity of freshwater obligate and euryhaline generalist chondrichthyans is low, yet
they offer a unique insight into elasmobranchs adapted to non-marine environments. The …

Neotropical freshwater stingrays (Potamotrygonidae) are conspicuous components of the
South American ichthyofauna, and may be regionally important as an economic resource …

We studied anatomical and functional aspects of the reproductive system of females of the
Magdalena river stingray Potamotrygon magdalenae using microscopic and macroscopic …

Understanding the ecological role of a species in an ecosystem and the dynamics of the
communities depends largely on knowledge of the trophic relationships. We evaluated the …

Abstract Knowledge of thermal tolerance limits provides important clues to the capacity of a
species to withstand acute and chronic thermal changes. Climate models predict the …

The reproductive biology of South American freshwater stingrays (family Potamotrygonidae)
is still poorly studied compared to other marine species. In the present study, we examined …

Potamotrygon magdalenae, una raya perteneciente a la familia Potamotrygonidae
distribuida en la cuenca del río Magdalena, es considerada de muy alta prioridad para la …