Brazil nut
Hard indehiscent fruits of the Brazil nut tree (Bertholletia excelsa). The fruit on the left has been opened to reveal the large edible seeds in their shells. The tree is found in the Amazonian forests of Brazil, Peru, Colombia, and Ecuador.
No rainfores, no Brazil nuts
When two or more species in an ecosystem interact to each otherās benefit, the relationship is said to be mutualistic. The production of Brazil nuts and the regeneration of the trees that produce them provide an example of mutualism, and in this case the interaction also illustrates the importance of plant and animal ecology in maintaining a rainforest ecosystem. Euglossine bees (most often the females) are the only creatures regularly able to gain entrance to...