This study has found that the family Potamotrygonidae is frequently parasitized by several groups of parasites on different locations of the body. Location of parasitism depends on the feeding ...

Few creatures can match the manta ray or stingray when it comes to gracefulness in the water. These cartilaginous fish appear to glide through the water with each flap of their pectoral fins, looking ...

Carcinopodacarus polymorphus gen. n. et sp. n. from Guira guira (Cuculiformes: Cuculidae) in Brazil: a first example of male polymorphism in the family Dermationidae (Acariformes: Analgoidea ...