Thiruvananthapuram zoo to protect rare Arara nut-tree
The Thiruvananthapuram zoo plans conservation work to safeguard a rare Arara nut-tree identified on-site. Experts found bark damage and recommended tree surgery, pruning, and germplasm conservation to prevent potential collapse.
Key takeaways
- A rare Arara nut-tree exists at the Thiruvananthapuram zoo and has attracted conservation attention.
- Experts found bark damage and recommended tree surgery, treatment, pruning, and germplasm conservation.
- A nearby young Arara nut-tree is estimated to be five to eight years old, indicating recent establishment in the zoo.
- The tree is located near the hog deer enclosure, with soil nutrient considerations cited by evaluators.
What Happened
The Thiruvananthapuram zoo announced steps to protect a rare Arara nut-tree located within its premises. Arara nut, known scientifically as Joannesia princeps, is a tree native to Brazil and is reported to be found in very few countries after being introduced elsewhere. In Kerala, the tree is reportedly present only at the city zoo, and the discovery prompted a conservation response. A team from the Rubber Board recently examined three rubber trees in the zoo and, subsequently, a senior scientist from the Kerala Forest Research Institute inspected the Arara nut-tree. The expert identified the tree as Arara nut-tree and noted health issues, including bark damage with cracks and dead or damaged tissue particularly near the soil. He warned that the tree, being a softwood, could topple if the damage is not addressed, especially given its location in a corner of the hog deer enclosure and concerns about soil nutrients.
As a result, the zoo plans long-term conservation actions: performing tree surgery to remove damaged bark, applying medicines to curb decay, pruning to manage weight, and preserving the tree’s germplasm for future cultivation in botanical gardens or zoos. The team also observed that, despite introductions elsewhere, the Arara nut-tree at the Thiruvananthapuram zoo has not shown invasive behavior like prolific seeding or sprouting. They estimated a nearby young Arara nut-tree to be about five to eight years old, growing only a few feet from the large specimen.
Why It Matters
The zoo’s effort centers on safeguarding a rare, regionally unique specimen of a tree native to Brazil. By planning surgical care, weight management through pruning, and germplasm conservation, officials aim to extend the tree’s viability within the zoo and preserve its genetic material for potential future cultivation elsewhere. The presence of a nearby young Arara nut-tree also raises considerations about the species’ establishment within the zoo’s micro-ecosystem and its long-term management.
Background
The Arara nut-tree (Joannesia princeps) is described as a medium to tall tree with a wide canopy belonging to the same plant family as the rubber tree. In Kerala, its known occurrence is limited to the Thiruvananthapuram zoo. A preliminary misclassification as a rubber tree had been corrected after expert review. A senior principal scientist and head of the Silviculture department at the Kerala Forest Research Institute led the assessment that confirmed the tree’s identity and highlighted health concerns needing intervention.
Key Facts
- The Arara nut-tree is located in the Thiruvananthapuram zoo in Kerala, India.
- The tree is native to Brazil and is rare in cultivation outside its origin region.
- Health assessment found bark damage with cracks and dead tissue near the soil.
- A Rubber Board inspection preceded the identification, followed by confirmation from a Kerala Forest Research Institute scientist.
- Experts recommended tree surgery to remove damaged bark, medicines to arrest decay, and pruning for weight management.
- The plan includes conserving the tree’s germplasm for future use in botanical gardens or zoos.
- A nearby young Arara nut-tree is estimated to be five to eight years old and located a few feet from the large specimen.
- The tree’s location is near the hog deer enclosure within the zoo premises.
- Public communication was published on August 7, 2026.
What Happens Next
Implementation steps are expected to include surgical removal of damaged bark, administration of treatments to counter decay, and pruning as part of a weight-management strategy. Germplasm conservation plans will be pursued to enable future maintenance of the Arara nut-tree within botanical collections or zoos. The timeline for these interventions and any follow-up health assessments have not been specified in the available material.
Sources reviewed
Project Chintan independently synthesized and analyzed information cross-checked across the sources listed above.
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