20 October 2009

Vogt, 2009

Handbook on LongevityVogt G. 2009. Research on aging and longevity in the parthenogenetic marbled crayfish, with special emphasis on stochastic developmental variation, allocation of metabolic resources, regeneration,
and social ctress. In: Bentely JV, Keller MA (eds), Handbook on Longevity: Genetics, Diet and Disease, pp. 353-372. Nova Science Publishers: Hauppauge.
ISBN: 978-1-60741-075-1


This article presents first results on aging and longevity in the marbled crayfish, an isogenic invertebrate with indeterminate growth. The marbled crayfish is the only known parthenogenetic species of more than 10.000 decapod crustaceans and has a maximal life span of roughly 3.5 years. Its main advantages, aside from genetically identical offspring and lifelong growth, are the alternation of growth and reproduction phases, a high regeneration capacity and easy handling in the laboratory. In a group of seven genetically identical batch-mates life span varied from 437 to 910 days although the sibs were communally reared and fed ad libitum with the same pellet food. In the same group there was no clear-cut relationship between longevity and growth or reproduction frequency. However, the specimen with the lowest life span showed fast growth, early onset of reproduction, and short time intervals between reproduction cycles. Damages like loss of appendages were repaired and did not negatively affect longevity. Social stress, in contrast, shortened life expectancy. The biological peculiarities of the marbled crayfish and the data obtained so far argue for a more intense use of this animal in research on aging and longevity.

Keywords: None provided.

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