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.
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Acknowledgments
We would like to thank Jane Clout and Anthony Sciacca for supply of the oysters, Vivek Mitter and Raewyn Street for technical assistance during the project and David Mayer for help with the statistical analyses. Also, we thank the project steering committee members for their support and advice; Melissa Brown, Damien Broderick, Phillip Gaffney, John Russell and Brian Patterson. Comments on the manuscript from Warwick Nash were appreciated. This project was co-funded by the Fisheries Research and Development Corporation (project number 2007/033).
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Communicated by R. H. Richmond.
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Godwin, R., Brown, I., Montgomery, S. et al. Telomere dynamics in the Sydney rock oyster (Saccostrea glomerata): an investigation into the effects of age, tissue type, location and time of sampling. Mar Biol 159, 77–86 (2012). https://doi.org/10.1007/s00227-011-1791-7
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DOI: https://doi.org/10.1007/s00227-011-1791-7