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Transforming, Genome Editing and Phenotyping the Nitrogen-fixing Tropical Cannabaceae Tree Parasponia andersonii

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Tamarind tree seed dispersal by ring-tailed lemurs.

Anne S Mertl-Millhollen¹, Kathryn Blumenfeld-Jones, Sahoby Marin Raharison

¹Department of Anthropology, University of Oregon, Eugene, OR 97401, USA. hplam_1998@yahoo.com

Primates; Journal of Primatology

|June 2, 2011

Summary

Ring-tailed lemurs (Lemur catta) disperse viable tamarind tree seeds away from parent trees, aiding forest regeneration in Madagascar. This seed dispersal is crucial for the survival of endangered gallery forests.

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The Tail Suspension Test

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Published on: January 28, 2012

Area of Science:

Ecology
Conservation Biology
Primatology

Background:

Madagascar's southern gallery forests, dominated by tamarind trees (Tamarindus indica), are critically endangered.
Tamarind trees are a vital food source for ring-tailed lemurs (Lemur catta), but recruitment of young trees is low.
Mature tamarind trees inhibit seedling growth beneath their crowns, necessitating dispersal away from adults for successful recruitment.

Purpose of the Study:

To investigate whether ring-tailed lemurs effectively disperse tamarind seeds away from overhanging adult trees.
To assess the role of lemurs in the regeneration of endangered tamarind-dominated gallery forests.

Main Methods:

Observing two ring-tailed lemur troops for 10 days each, recording feeding and defecation sites.
Collecting tamarind seeds from feces and fruit for germination trials.
Monitoring tamarind seedling germination and survival rates under various conditions.

Main Results:

Ring-tailed lemurs consumed tamarind fruit, with 58% of their 417 defecations occurring on the ground away from overhanging tamarind crowns.
Tamarind seeds from both fruit and feces demonstrated germination viability.
Seedling survival was significantly lower under mature tamarind crowns compared to open areas.

Conclusions:

Ring-tailed lemurs act as effective seed dispersers for tamarind trees.
Lemur-mediated seed dispersal away from adult trees is vital for tamarind recruitment and the conservation of Madagascar's gallery forests.