Physiological ageing in a polar and a temperate swimming scallop
We compared physiological ageing parameters in 2 scallops, the temperate Aequipecten opercularis and the Antarctic Adamussium colbecki . These 2 species are phylogenetically closely related and display a similar lifestyle but have distinctly different maximum lifespans (MLSP). A. opercularis does no...
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ftsouthampton:oai:eprints.soton.ac.uk:46970 2023-07-30T03:58:25+02:00 Physiological ageing in a polar and a temperate swimming scallop Philipp, E. Brey, T. Heilmayer, O. Abele, D. Pörtner, H.O. 2006 https://eprints.soton.ac.uk/46970/ http://www.int-res.com/articles/meps2006/307/m307p187.pdf unknown Philipp, E., Brey, T., Heilmayer, O., Abele, D. and Pörtner, H.O. (2006) Physiological ageing in a polar and a temperate swimming scallop. Marine Ecology Progress Series, 307, 187-198. Article PeerReviewed 2006 ftsouthampton 2023-07-09T20:52:39Z We compared physiological ageing parameters in 2 scallops, the temperate Aequipecten opercularis and the Antarctic Adamussium colbecki . These 2 species are phylogenetically closely related and display a similar lifestyle but have distinctly different maximum lifespans (MLSP). A. opercularis does not live longer than 8 to 10 yr, whereas A. colbecki lives over 18 yr. The development of several physiological ageing parameters over time, chosen according to the ‘free radical theory of ageing‘, was compared in the 2 species to identify differences in the ageing process. In the shorter-lived A. opercularis , activities of the mitochondrial enzymes citrate synthase and cytochrome c oxidase and of the antioxidant enzyme catalase showed a more pronounced decrease with increasing age than in the longer-lived A. colbecki . In line with this finding, lipofuscin accumulation increased more distinctly in A. opercularis than in A. colbecki , while tissue protein content decreased in A. opercularis but increased in A. colbecki . Its better preservation of mitochondrial and antioxidant enzyme activities and the avoidance of waste accumulation may enable A. colbecki to live longer than A. opercularis . Mitochondrial function investigated in A. opercularis showed only minor changes with age, and mitochondrial H 2 O 2 generation rates were low at all ages. We relate our findings to the ‘free radical–rate of living’ theory, to the ‘uncoupling to survive‘ hypothesis, and to the particular lifestyle of these scallops. Article in Journal/Newspaper Antarc* Antarctic University of Southampton: e-Prints Soton Antarctic The Antarctic |
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University of Southampton: e-Prints Soton |
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description |
We compared physiological ageing parameters in 2 scallops, the temperate Aequipecten opercularis and the Antarctic Adamussium colbecki . These 2 species are phylogenetically closely related and display a similar lifestyle but have distinctly different maximum lifespans (MLSP). A. opercularis does not live longer than 8 to 10 yr, whereas A. colbecki lives over 18 yr. The development of several physiological ageing parameters over time, chosen according to the ‘free radical theory of ageing‘, was compared in the 2 species to identify differences in the ageing process. In the shorter-lived A. opercularis , activities of the mitochondrial enzymes citrate synthase and cytochrome c oxidase and of the antioxidant enzyme catalase showed a more pronounced decrease with increasing age than in the longer-lived A. colbecki . In line with this finding, lipofuscin accumulation increased more distinctly in A. opercularis than in A. colbecki , while tissue protein content decreased in A. opercularis but increased in A. colbecki . Its better preservation of mitochondrial and antioxidant enzyme activities and the avoidance of waste accumulation may enable A. colbecki to live longer than A. opercularis . Mitochondrial function investigated in A. opercularis showed only minor changes with age, and mitochondrial H 2 O 2 generation rates were low at all ages. We relate our findings to the ‘free radical–rate of living’ theory, to the ‘uncoupling to survive‘ hypothesis, and to the particular lifestyle of these scallops. |
format |
Article in Journal/Newspaper |
author |
Philipp, E. Brey, T. Heilmayer, O. Abele, D. Pörtner, H.O. |
spellingShingle |
Philipp, E. Brey, T. Heilmayer, O. Abele, D. Pörtner, H.O. Physiological ageing in a polar and a temperate swimming scallop |
author_facet |
Philipp, E. Brey, T. Heilmayer, O. Abele, D. Pörtner, H.O. |
author_sort |
Philipp, E. |
title |
Physiological ageing in a polar and a temperate swimming scallop |
title_short |
Physiological ageing in a polar and a temperate swimming scallop |
title_full |
Physiological ageing in a polar and a temperate swimming scallop |
title_fullStr |
Physiological ageing in a polar and a temperate swimming scallop |
title_full_unstemmed |
Physiological ageing in a polar and a temperate swimming scallop |
title_sort |
physiological ageing in a polar and a temperate swimming scallop |
publishDate |
2006 |
url |
https://eprints.soton.ac.uk/46970/ http://www.int-res.com/articles/meps2006/307/m307p187.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Philipp, E., Brey, T., Heilmayer, O., Abele, D. and Pörtner, H.O. (2006) Physiological ageing in a polar and a temperate swimming scallop. Marine Ecology Progress Series, 307, 187-198. |
_version_ |
1772821216790315008 |