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Comparative Study
. 2003 Nov 7;270 Suppl 2(Suppl 2):S189-91.
doi: 10.1098/rsbl.2003.0048.

Extremely Short Lifespan in the Annual Fish Nothobranchius Furzeri

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Comparative Study

Extremely Short Lifespan in the Annual Fish Nothobranchius Furzeri

Stefano Valdesalici et al. Proc Biol Sci. .
Free PMC article


Evolutionary theories of senescence postulate that lifespan is determined by the age-dependent decrease in the effects of natural selection. Factors that influence survival and reproduction at early life stages have a larger impact on fitness than factors that influence later life stages. According to these views, selection for rapid sexual maturation and a steep age-dependent decrease in fitness drive the evolution of short lifespans. Here, we report on the survival trajectory of Nothobranchius furzeri (Pisces: Ciprinodontidae): a member of a group of annual species found in temporary bodies of water whose life expectancy in the wild is limited to a few months. We find that maximum survival of N. furzeri in the laboratory is less than 12 weeks. The temporal trajectory of survival shows an age-dependent increase in the mortality rate that is typical of organisms with defined lifespans. The lifespan of N. furzeri is exceptionally short for a vertebrate: owing to its small size and the possibility of propagation in captivity, N. furzeri could be used as a convenient model for ageing research.

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