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

Godwin, Rosamond M.; Brown, Ian W.; Montgomery, S.S.; Frusher, SD; Green, Timothy J.; Ovenden, Jennifer R.

doi:10.1007/s00227-011-1791-7

Cited by 8 publications

(4 citation statements)

References 50 publications

(54 reference statements)

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“…A weak correlation between age and telomere length was detected in another mollusc species, the Sydney rock oyster ( Saccostrea glomerata, Ostreidae; Godwin et al . ). However, there was no relationship between telomere length and body size in five Australian commercial crustacean species (Godwin et al .…”

Section: Attributes Of Harvested Speciesmentioning

confidence: 97%

“…In abalone (Haliotis rubra; Haliotidae) from Tasmania, a small-scale study demonstrated an inverse relationship between telomere length and shell size (R 2 = 0.833, P < 0.001; Ovenden and Godwin 2011). A weak correlation between age and telomere length was detected in another mollusc species, the Sydney rock oyster (Saccostrea glomerata, Ostreidae; Godwin et al 2012). However, there was no relationship between telomere length and body size in five Australian commercial crustacean species .…”

Section: Case Studiesmentioning

confidence: 99%

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Ocean's eleven: a critical evaluation of the role of population, evolutionary and molecular genetics in the management of wild fisheries

Ovenden

Berry

Welch³

et al. 2013

Fish and Fisheries

163

149

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Significant changes have occurred in the well‐established partnership between fisheries managers and geneticists over the last 50 years. It is therefore timely to review and recalibrate the ways in which genetic technologies can assist the fishing industry to maintain productive and sustainable harvests. Our objective is to contribute to the mutual understanding of all stakeholders in the genetics–management partnership. Genetic technologies that are relevant to fisheries management are grouped into eleven themes, which are described in plain language for a non‐specialist audience. The role that the genetic information plays in fisheries management is explained, along with an assessment of the challenges and barriers that may be preventing the uptake of the information into the fisheries management process. The compelling conclusion is that genetics offers a diverse collection of versatile and useful tools for informing fisheries managers about issues that have a biological basis. Presently, mainstream use of genetic tools focuses on a narrow set of fisheries management issues, but the diversity of genetic tools and the novel issues they can address indicates that uptake will grow, particularly as communication between geneticists and end‐users improves.

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Section: Attributes Of Harvested Speciesmentioning

confidence: 97%

Section: Case Studiesmentioning

confidence: 99%

Ocean's eleven: a critical evaluation of the role of population, evolutionary and molecular genetics in the management of wild fisheries

Ovenden

Berry

Welch³

et al. 2013

Fish and Fisheries

163

149

View full text Add to dashboard Cite

show abstract

“…However, the relationship between telomere length measured by TRF and chronological age is weak in many species from a diverse taxonomic range such as oysters ( Saccostrea glomerata ) (Godwin et al . ), coral ( Galaxea fascicularis ) (Tsuta & Hidaka ) and sea bass ( Dicentrarchus labrax ) (Horn et al . ), several decapod crustacean species (Godwin et al .…”

Section: Molecular Age Biomarkersmentioning

confidence: 99%

“…a) indicates a large inherited variation in the marker, which is a strong indication that it will perform poorly as a cross‐sectional age estimator, for example telomere length variation in the earliest age class (Godwin et al . ; Reichert et al . ).…”

Section: Mab Developmentmentioning

confidence: 99%

Molecular biomarkers for chronological age in animal ecology

et al. 2015

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The chronological age of an individual animal predicts many of its biological characteristics, and these in turn influence population-level ecological processes. Animal age information can therefore be valuable in ecological research, but many species have no external features that allow age to be reliably determined. Molecular age biomarkers provide a potential solution to this problem. Research in this area of molecular ecology has so far focused on a limited range of age biomarkers. The most commonly tested molecular age biomarker is change in average telomere length, which predicts age well in a small number of species and tissues, but performs poorly in many other situations. Epigenetic regulation of gene expression has recently been shown to cause agerelated modifications to DNA and to cause changes in abundance of several RNA types throughout animal lifespans. Age biomarkers based on these epigenetic changes, and other new DNA-based assays, have already been applied to model organisms, humans and a limited number of wild animals. There is clear potential to apply these marker types more widely in ecological studies. For many species, these new approaches will produce age estimates where this was previously impractical. They will also enable age information to be gathered in cross-sectional studies and expand the range of demographic characteristics that can be quantified with molecular methods. We describe the range of molecular age biomarkers that have been investigated to date and suggest approaches for developing the newer marker types as age assays in nonmodel animal species.

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Telomere dynamics in the Pacific crown-of-thorns seastar (Acanthaster cf. solaris): effect of age, diet, and tissue type

et al. 2023

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Population irruptions of crown-of-thorns seastar (CoTS, Acanthaster spp.) represent a perennial threat to Indo-Pacific coral reefs. Age determination of CoTS is challenging, thereby hindering understanding and management of this nuisance species. Telomeres, which are protective DNA structure found at the ends of eukaryotic chromosomes that shorten at each cell division, have been used to estimate age in wild animals. To investigate the use of telomeres in CoTS, we optimized a quantitative PCR protocol to measure relative telomere length (rTL) in CoTS for the first time. Comparing rTL among four age groups (4, 7, 16, > 24 months post-settlement), we found that adult CoTS generally exhibit shorter rTL than juveniles, which is the first evidence of age-related telomere attrition in CoTS. However, there was large within-age class variation, and no significant relationships were found between adult CoTS rTL and potential age-indicating external features. Furthermore, we found accelerated telomere attrition under sub-optimal diet, where individuals that were fed crustose coralline algae for 16 months exhibited shorter rTL than their counterparts fed on coral. A positive correlation was found between rTL of tube feet and pyloric caeca, suggesting synchronization of telomere dynamics across somatic tissues in CoTS. Overall, our results suggest that rTL could be used to classify CoTS into broad age groups, though individual variation constrains the ability to resolve specific cohorts. The present study contributes to the understanding of telomere dynamics in marine invertebrates, while laying the groundwork for future research into rTL as biomarker for age and potentially stress for CoTS.

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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

Cited by 8 publications

References 50 publications

Ocean's eleven: a critical evaluation of the role of population, evolutionary and molecular genetics in the management of wild fisheries

Ocean's eleven: a critical evaluation of the role of population, evolutionary and molecular genetics in the management of wild fisheries

Molecular biomarkers for chronological age in animal ecology

Telomere dynamics in the Pacific crown-of-thorns seastar (Acanthaster cf. solaris): effect of age, diet, and tissue type

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