| deforestation and the structure of frog communities in the humedale terraba-sierpe, costa rica. | loss of tropical forests is a major cause of biodiversity loss worldwide. although drastic modification of the habitat has been shown to negatively affect amphibians, we are far from a complete understanding of the response of amphibian communities to deforestation. we studied frog assemblages in a gradient of forest modification in a humid area of costa rica, where the primary forest has been partially converted into pasture. the study area is a mosaic of primary palm forest, abandoned pasture ... | 2009 | 19341340 |
| patterns of parental care in neotropical glassfrogs: fieldwork alters hypotheses of sex-role evolution. | many animals provide parental care to offspring. parental sex-roles vary extensively across taxa, and such patterns are considered well documented. however, information on amphibians is lacking relative to other vertebrate groups. we combine natural history observations with functional and historical analyses to examine the evolution of egg care in glassfrogs (centrolenidae). parental care was considered rare and predominately provided by males. our field observations of 40 species revealed that ... | 2017 | 28241390 |
| cyanosis by methemoglobinemia in tadpoles of cochranella granulosa (anura: centrolenidae). | tadpoles inhabit generally well oxygenated rivers and streams, nevertheless they were found in areas with limited oxygen availability inside the rivers. to assess this feature, i examined factors that influence centrolenid tadpole behaviour using cochranella granulosa. the tadpoles were reared in well-oxygenated and hypoxic environments and their development, survivorship and growth were compared. the tadpoles in oxygenated water acquired a pale color, while tadpoles in hypoxic water grew faster ... | 2010 | 21246999 |