Subtropical dry forests are among the most vulnerable biomes to land transformation at a global scale. Among them, the Dry Chaco suffers an accelerated change due to agriculture expansion and intensification. The Dry Chaco ecoregion is characterized by high levels of endemisms and species diversity, which are the result of a variety of climates and reliefs, allowing a wide variety of environmen...

•^A iiew species of frog of the genus Leptodactylus is described from eastern Brazil. The new species differs little morphologically from L. latinasus, but the advertisement calls are very different. The geographic distribution of L. latinasus an4 the new species, together with the respective levels of differentiation of morphology and call, is mirrored in the species pair L. bufonius and L. tr...

the genetic variation and population structure of narrow-clawed crayfish (astacus leptodactylus) was examined by means of polymerase chain reaction (pcr) restriction fragment length polymorphism (rflp) analysis of the cytochrome oxidase subunit i (coi) of mitochondrial dna. a total of 194 adult specimens were collected from seven sample sites including, two in the south caspian sea and one each...

Abstract Amphibians exhibit diverse parental care behaviours, which may be performed by the female, male or both parents. In Neotropical family Leptodactylidae, frogs in genus Leptodactylus different parenting behaviours. The repertoire of behaviours includes egg/nest attendance, nest chamber sealing, tadpole feeding with trophic eggs, and attendance associated complex such as pumping behaviour...

Several species of arthropods prey upon or utilize foam nests made by leptodactylid frogs. A spider [Lycosa pampeana) enters burrows made by Leptodactylus iatinasus in Argentina and eats most of the eggs. Two genera of dytiscid beetles have representatives that lay eggs on the foam mass Q^ Physalaemus pustulosas in Guatemala; beetle larvae hatch and swim in temporary ponds, where they feed on f...