Croaking Science: Longevity in amphibians

The life span of an individual is a critical life-history trait since it directly impacts on the number of breeding attempts, annual reproductive investment and lifetime reproductive success. Amphibians exhibit a large range in life spans from two years in some tropical frog species (Ramirez et al., 1998) to over 20 years in some Mediterranean salamanders (Warburg et al., 2007). Understanding longevity and variations between amphibian species has important conservation implications since long-lived species may be more vulnerable to habitat change and disturbance because they have lower annual reproductive output and are less able to compensate for increased mortality (Purvis et al., 2000). Amphibian species with very short lifespans are also highly vulnerable since they are prone to rapid population turnover and a single disturbance event can result in whole population extinction (Lehtinen & MacDonald, 2011). Leer más.