The Mantled Howler Monkey (Alouatta palliata) Population at La Selva Research Station, Costa Rica: Comparing Censuses in 1992 and 2022.

A study published in the International Journal of Primatology compared the population of mantled howler monkeys at La Selva Research Station in Costa Rica in 1992 and 2022. The researchers conducted a follow-up census using acoustic triangulation and found that the number of howler monkey groups had increased from 15 in 1992 to 25 in 2022. This suggests a population growth and recovery from the effects of a yellow fever epidemic in the 1950s. The study highlights the importance of long-term protection and increasing connectivity for sustaining and bolstering primate populations. [Extracted from the article]