Update on Slow Aging and Negligible Senescence – A Mini-Review

Finch, Caleb E.

doi:10.1159/000215589

Cited by 122 publications

(99 citation statements)

References 76 publications

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“…As Williams observed, however, "it is indeed remarkable that after a seemingly miraculous feat of morphogenesis a complex metazoan should be unable to perform the much simpler task of merely maintaining what is already formed" (Williams 1957: 398). Over the last decades, field and laboratory studies have demonstrated that some organisms suffer negligible senescence over the course of life (Finch 1990;2009;Vaupel et al 2004). Notable examples are queens in eusocial species (Hölldobler and Wilson 1990;Keller and Genoud 1997;Keller 1998;Carey 2001) and hydra (Martinez 1998).…”

Section: Introductionmentioning

confidence: 99%

Senescence vs. sustenance: Evolutionary-demographic models of aging

Baudisch¹,

Vaupel²

2010

DemRes

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Section: Introductionmentioning

confidence: 99%

Senescence vs. sustenance: Evolutionary-demographic models of aging

Baudisch¹,

Vaupel²

2010

DemRes

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“…When this occurs, death is usually preceded by functional Hydra (Martinez, 1998;Schaible et al, 2015), although similar demographic data have been reported for other species (Finch, 2009;Jones et al, 2014). The classical definition of ageing applies most readily to species where the individual is easily defined, and much of the current uncertainty about ageing in corals derives from questions about the nature of the individual.…”

Section: Introductionmentioning

confidence: 64%

Do reef corals age?

2017

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Hydra is emerging as a model organism for studies of ageing in early metazoan animals, but reef corals offer an equally ancient evolutionary perspective as well as several advantages, not least being the hard exoskeleton which provides a rich fossil record as well as a record of growth and means of ageing of individual coral polyps. Reef corals are also widely regarded as potentially immortal at the level of the asexual lineage and are assumed not to undergo an intrinsic ageing process. However, putative molecular indicators of ageing have recently been detected in reef corals. While many of the large massive coral species attain considerable ages (>600 years) there are other much shorter-lived species where older members of some populations show catastrophic mortality, compared to juveniles, under environmental stress. Other studies suggestive of ageing include those demonstrating decreased reproduction, increased susceptibility to oxidative stress and disease, reduced regeneration potential and declining growth rate in mature colonies. This review aims to promote interest and research in reef coral ageing, both as a useful model for the early evolution of ageing and as a factor in studies of ecological impacts on reef systems in light of the enhanced effects of environmental stress on ageing in other organisms.

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“…Classical theory suggests that some senescence should be occurring through reduced fecundity, increased mortality, or both (Hamilton, 1966). However, more recent research shows that it is possible for senescence to be negligible or even "negative" for animals such as fish, with so-called indeterminate growth, or growth beyond reproductive maturity (Vaupel and others, 2004;Williams and others, 2006;Finch, 2009;McNamara and others, 2009;Baudisch, 2011;Jones and others, 2014;Wensink and others, 2014). Continued capture-recapture monitoring of survival for the endangered suckers in Upper Klamath Lake will provide evidence about whether senescence occurs through mortality for these populations (for example, Peron and others, 2010).…”

Section: Discussionmentioning

confidence: 99%