Generation length for mammals

Author(s)Michela Pacifici, Luca Santini, Moreno Di Marco, Daniele Baisero, Lucilla Francucci, Gabriele Grottolo Marasini, Piero Visconti, Carlo Rondinini
Year Published2013
JournalNature Conservation
Page Numbers87-94
Size272.02 KB
Abstract:

Generation length (GL) is defined as the average age of parents of the current cohort, reflecting the turnover rate of breeding individuals in a population. GL is a fundamental piece of information for population ecology as well as for measuring species threat status (e.g. in the IUCN Red List). Here we present a dataset including GL records for all extant mammal species (n=5427). We first reviewed all data on GL published in the IUCN Red List database. We then calculated a value for species with available reproductive parameters (reproductive life span and age at first reproduction). We assigned to missing-data species a mean GL value from congeneric or confamilial species (depending on data availability). Finally, for a few remaining species, we assigned mean GL values from species with similar body mass and belonging to the same order. Our work provides the first attempt to complete a database of GL for mammals; it will be an essential reference point for all conservation-related studies that need pragmatic information on species GL, such as population dynamics and applications of the IUCN Red List assessment.

Keywords: Age at first reproduction, conservation assessment, IUCN Red List, longevity, reproductive life span
Authors: Michela Pacifici, Luca Santini, Moreno Di Marco, Daniele Baisero, Lucilla Francucci, Gabriele Grottolo Marasini, Piero Visconti, Carlo Rondinini
Journal: Nature Conservation (2013) 87-94


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