[2] Their burrows have been found to play an important role in balancing carbon dioxide in mangrove forests.

[4] During the early months of its life, the species feeds on polychaete worms and microorganisms found in sediments.

Animals known to hunt U. cordatus include, but are not limited: coati, monkeys, and hawks.

Unlike most animals, the proportion of genders within populations are skewed in favor of the males.

[2] Like many other crabs, U. cordatus will migrate during mating season, which occurs during the months of November to January.

Ucides cordatus can play important roles in determining and empirically quantifying successful mangrove reserves.

Environmental changes such as increase of heavy metals, fertilizer runoff, and other xenobiotics have been correlated back to U. cordatus and their biological status.

States like Paraiba have laws preventing the capture of females crabs smaller than 4.5 cm.