The tiny frog still packs a colourful punch
Alexander Tamanini Mônico
Resplendent with its blue stripes and golden legs, the recently discovered poison dart frog, named Ranitomeya aetherea, is a miniature marvel measuring just 14 to 17 millimetres from nose to tail.
Esteban Koch and his team from the National Institute of Amazonian Research located in Manaus, Brazil, stumbled upon this striking species in the dense forests of the Juruá river basin in 2023. After further exploration in 2024, they formally identified and classified it as Ranitomeya aetherea.
Although limited information is available about this tiny frog, researchers have observed certain behaviors hinting at its unique parental care system. Unlike other frogs that lay eggs in large groups, Ranitomeya aetherea seem to deposit their eggs individually. These solitary eggs are often found in water-filled crevices where leaves meet the stems of Phenakospermum guyannense, a palm-like plant.
During their observations, the team witnessed a female frog laying a single egg, suggesting a potential strategy where the female returns periodically to lay unfertilized eggs for the developing tadpoles to feed on. This mechanism aids in providing essential nutrients and energy for the tadpole’s growth.
Despite the lack of data on the frog’s population size and conservation status, the researchers express concerns about potential threats to the species. Recent deforestation activities in the frog’s habitat, accessed via a small plane and an 8-hour boat trip on the river, pose a significant risk to the delicate balance of this species. As Ranitomeya aetherea shows a strong affinity towards a specific plant species in a particular region, any disruption in its habitat could have severe consequences for its survival.
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