Energetics of the extremely long-living bivalve Arctica islandica based on a Dynamic Energy Budget model

The ocean quahog Arctica islandica is the longest–living mollusk on Earth with a lifespan of at least 500 years. The slow senescence of this bivalve has promoted a great interest in its metabolic strategy. A dynamic energy budget (DEB) model was applied to describe how this species allocates its ene...

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Bibliographic Details
Published in:Journal of Sea Research
Main Authors: Ballesta-Artero, Irene, Augustine, Starrlight, Witbaard, Rob, Carroll, Michael L., Mette, Madelyn J., Wanamaker Alan, D., van der Meer, Jaap
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
ageing
Dynamic Energy Budget (DEB) Theory
food conditions
growth
metabolism
Ocean quahog
temperature
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water
name=SDG 14 - Life Below Water
Arctica islandica
Iceland
Ingøya
North Atlantic
Northern Norway
Online Access:https://research.vu.nl/en/publications/96c3ae3f-9d41-4f8e-8e0f-cc73c573e2bd
https://doi.org/10.1016/j.seares.2018.09.016
https://hdl.handle.net/1871.1/96c3ae3f-9d41-4f8e-8e0f-cc73c573e2bd
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Summary:The ocean quahog Arctica islandica is the longest–living mollusk on Earth with a lifespan of at least 500 years. The slow senescence of this bivalve has promoted a great interest in its metabolic strategy. A dynamic energy budget (DEB) model was applied to describe how this species allocates its energy to maintenance, growth, maturation, and reproduction in a variable environment. We studied the relationship between A. islandica growth, lifespan, and food availability at eight different locations in the North Atlantic Ocean. Our results indicate that A. islandica's extreme longevity arises from its low somatic maintenance cost ṗ M and low ageing acceleration h¨ a , but there was not a direct relationship between food availability and lifespan in these A. islandica locations. Monkey Bank (North Sea), Iceland, and Ingøya (northern Norway) had the highest food availability estimates of all the localities but did not have the lowest longevities, in contrast to the theory of caloric restriction.

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