Vachellia cornigera
Vachellia cornigera[edit | edit source]
Vachellia cornigera, commonly known as the bullhorn acacia, is a species of acacia native to Central America. It is notable for its mutualistic relationship with certain species of ants, particularly Pseudomyrmex ferruginea.
Description[edit | edit source]
Vachellia cornigera is a small to medium-sized tree that can grow up to 10 meters in height. It is characterized by its swollen, hollow thorns that resemble the horns of a bull, hence the common name "bullhorn acacia". These thorns provide shelter for ants, which in turn protect the tree from herbivores and clear away competing vegetation.
The leaves of Vachellia cornigera are bipinnate, with small leaflets that are sensitive to touch. The tree produces small, yellow, globular flowers that are attractive to a variety of pollinators.
Mutualism with Ants[edit | edit source]
Vachellia cornigera has a well-documented mutualistic relationship with ants, particularly Pseudomyrmex ferruginea. The tree provides the ants with food in the form of nectar from extrafloral nectaries and protein-rich Beltian bodies located on the tips of its leaflets. In return, the ants aggressively defend the tree from herbivores and remove encroaching plants that might compete for resources.
This mutualism is a classic example of coevolution, where both the plant and the ants have evolved traits that benefit each other. The ants' aggressive behavior deters large herbivores, while the tree's provision of food and shelter ensures a stable ant population.
Habitat and Distribution[edit | edit source]
Vachellia cornigera is found in tropical and subtropical regions of Central America, including countries such as Mexico, Guatemala, and Belize. It typically grows in dry, open areas and is often found in disturbed habitats such as roadsides and pastures.
Uses[edit | edit source]
While not widely used in traditional medicine or agriculture, Vachellia cornigera is sometimes planted as a natural barrier due to its thorny nature and the protection provided by its ant inhabitants. It is also of interest to scientists studying mutualistic relationships and coevolution.
Related Pages[edit | edit source]
References[edit | edit source]
Vachellia cornigera
Pseudomyrmex ferruginea
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