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Telomere dynamics in the Sydney rock oyster (Saccostrea glomerata): an investigation into the effects of age, tissue type, location and time of sampling.

Godwin, R. and Brown, I. and Montgomery, S. and Frusher, S. and Green, T. and Ovenden, J. (2012) Telomere dynamics in the Sydney rock oyster (Saccostrea glomerata): an investigation into the effects of age, tissue type, location and time of sampling. Marine Biology, 159 (1). pp. 77-86.

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Article Link(s): http://dx.doi.org/10.1007/s00227-011-1791-7

Publisher URL: http://www.springeronline.com

Abstract

Telomere length has been purported as a biomarker for age and could offer a non-lethal method for determining the age of wild-caught individuals. Molluscs, including oysters and abalone, are the basis of important fisheries globally and have been problematic to accurately age. To determine whether telomere length could provide an alternative means of ageing molluscs, we evaluated the relationship between telomere length and age using the commercially important Sydney rock oyster (Saccostrea glomerata). Telomere lengths were estimated from tissues of known age individuals from different age classes, locations and at different sampling times. Telomere length tended to decrease with age only in young oysters less than 18 months old, but no decrease was observed in older oysters aged 2-4 years. Regional and temporal differences in telomere attrition rates were also observed. The relationship between telomere length and age was weak, however, with individuals of identical age varying significantly in their telomere length making it an imprecise age biomarker in oysters.

Item Type:Article
Business groups:Agri-Science, Fisheries and Aquaculture, QAFFI
Additional Information:© Her Majesty the Queen in Rights of Australia 2011.
Keywords:Abalone haliotis-mariae; stable oxygen isotopes; in-situ hybridization; cellular senescence; irradians lamarck; crassostrea-gigas; oxidative stress; pacific oyster; aging animals; bay scallop.
Subjects:Science > Biology > Genetics
Aquaculture and Fisheries > Fisheries > Shellfish fisheries
Deposited On:20 Feb 2012 07:49
Last Modified:20 Feb 2012 07:49

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