Marañón Poison Frog
Excidobates mysteriosus
The 'Ghost of Marañón'. This near-mythological frog is brown/black heavily dotted with large white polka dots. Exceedingly rare, it breeds exclusively inside terrestrial Bromeliads.
Umgebung
Terrestrisch
Luftfeuchtigkeit
70 - 90 %
Tagestemperatur
22 - 28 °C
Nachttemperatur
20 - 22 °C
UVB
Ferguson 2
UVI
0,7 - 1 UVI
Artbeschreibung
Geographical Origin and Habitat: Endemic to a restricted mountainous area in the Marañón River canyon of northwestern Peru. They inhabit dry rocky zones and mountain scrublands, living in close association with terrestrial bromeliads that provide moisture and shelter.
Taxonomy and Genetics: A member of the Dendrobatidae family, commonly known as the Marañón Poison Frog. This species features a striking glossy black or dark brown body entirely covered in large, circular white or cream polka dots.
Behavior and Habits: Diurnal, active, and agile. They spend most of their time climbing among bromeliad leaves. Males are highly vocal, defending their territory with a metallic trilling call, and carry tadpoles on their backs to bromeliad water pools.
Morphology: Adults reach a length of approximately 2.5 cm. Mature females are slightly larger and rounder than males. Males are slimmer and possess a dark vocal sac on their throat.
Pflege, Zucht und Mitbewohner
Terrarium Setup: Requires a vertically oriented terrarium (e.g. 45x45x60 cm) furnished with climbing branches, bark backgrounds, and several live bromeliads (Neoregelia) filled with water. The substrate should be a well-draining mix topped with dry oak leaves.
Lighting and Heating: Maintain daytime temperatures between 24 and 26°C, dropping to 20-21°C at night. Temperatures above 28°C can be fatal. Provide low-intensity 5% UVB lighting along with LED plant lights.
Humidity and Hydration: High humidity (80-90%) is required, achieved through regular misting with RO or declorinated water. Proper ventilation is critical to ensure fresh air flow and prevent bacterial skin infections.
Feeding and Supplementation: Feed daily with very small live prey, such as wingless fruit flies (Drosophila melanogaster) and springtails. Dust all prey items with high-quality calcium and vitamin D3 powder.
Compatibility: Best housed as single mated pairs. Females can be highly territorial and aggressive towards each other. Do not mix with other species of poison frogs.
Health and Common Diseases: Never handle with bare hands as human skin contact causes osmotic stress. Ensure the enclosure is clean to prevent bacterial septicemia. Prone to snout-rubbing injuries if stressed.
Geografische Herkunft und Verbreitung
Endemic to a restricted mountainous area in the Marañón River canyon of northwestern Peru. They inhabit dry rocky zones and mountain scrublands, living in close association with terrestrial bromeliads that provide moisture and shelter.
Ursprung
Extra-Amazonas-Südamerika
Amphibienprofil
- Diät
- Insectivore
- Eat bugs. Feed daily. Add vitamins.
- Lebenserwartung
- 5-15 years
- Erwachsenengröße
- 2.9 cm
- Lebensstil/Mikrohabitat
- Terrestrial
- Need high humidity. Forage constantly. Stable temps.
- Aktivitätszyklus
- Diurnal
- Strictly diurnal. Morning peaks. 12h cycle.
- Sozialität
- Gregarious
- Very active. Males defend. Add barriers.
- Reproduktion
- Oviparous
- Breed in rain. Males call. Tads swim.
- Toxizität
- Harmless
- In its native habitat, Excidobates mysteriosus secretes potent lipophilic alkaloids from its skin as a defense mechanism against predators. These toxins are acquired entirely through their specialized diet of toxic wild arthropods. However, captive-bred individuals, or wild-caught specimens kept in captivity for extended periods, completely lose their toxicity due to the lack of these specific dietary precursors. Despite being harmless in captivity, it is always recommended to wear disposable gloves when handling them. This precaution is primarily to protect the frog's sensitive, permeable skin from the natural oils, salts, and potential chemicals present on human hands.
- Lebensphase
- Metamorphosis
- For Excidobates mysteriosus, the life cycle begins with a small clutch of eggs laid in a dark, humid terrestrial or phytotelm (plant water) location. Once the eggs develop and hatch, the resulting tadpoles are meticulously transported on the back of a parent to a suitable rearing pool. The tadpoles develop in these small bodies of water over the course of two to three months. Following metamorphosis, tiny, fully-formed froglets emerge onto land, requiring consistently high humidity to survive. These froglets are extremely small and must be fed large quantities of microscopic prey, such as springtails, until they grow larger.
- Handhabungstoleranz
- Display only
- Handling of Excidobates mysteriosus should be strictly avoided unless absolutely necessary for health inspections or transferring enclosures. Like all amphibians, they possess highly permeable, sensitive skin that quickly absorbs toxins, salts, and oils from human hands, which can be fatal. If a transfer is required, the safest and least stressful method is to gently coax the frog into a clean plastic catch cup rather than using your hands. If physical contact is entirely unavoidable, you must wear powder-free nitrile gloves thoroughly moistened with dechlorinated water. Even then, the interaction should be kept as brief as possible to minimize the severe physiological stress handling causes.
- Brumation
- Nicht erforderlich
- Originating from consistent tropical or subtropical environments, the Excidobates mysteriosus does not undergo a true brumation period. In their natural habitat, they experience relatively stable temperatures year-round, with environmental shifts primarily driven by wet and dry seasons rather than extreme cold. In captivity, it is critical to maintain steady, optimal temperatures and high humidity levels throughout the entire year. Exposing these amphibians to significant temperature drops can severely compromise their immune system and lead to respiratory or digestive failures. While a slight reduction in humidity and a few degrees of temperature drop can simulate a dry season to cycle breeders, severe cooling must be completely avoided.
- Häutung
- Periodic
- Like all amphibians, the Excidobates mysteriosus undergoes a regular molting process to shed its outer layer of skin as it grows and to maintain skin health. This shedding process occurs frequently but is usually very rapid and highly secretive, meaning keepers rarely witness it occurring. The frog will typically contort its body, repeatedly open and close its mouth, and use its limbs to push the loosened skin forward over its head. Once the shed is removed, the frog will almost always consume the old skin to recycle valuable nutrients and proteins. Maintaining ideal humidity levels in the terrarium is paramount, as dry conditions can cause the skin to adhere, leading to deadly infections or restricted blood flow.
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