Sclerochronological records of Arctica islandica from the inner German Bight

Epplé, V.; Brey, Thomas; Witbaard, Rob; Kuhnert, Henning; Pätzold, Jürgen

doi:10.1191/0959683606hl970rr

Cited by 33 publications

(19 citation statements)

References 26 publications

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“…We can confirm the extraordinary high ages attained in populations around Iceland, where animals close to 200 y old are regularly encountered (Scho¨ne et al 2004, Scho¨ne et al 2005a, Strahl et al 2007). In the southern North Sea, maximum age appears to be about 150 y (Witbaard et al 1994, Witbaard et al 1999, Epple et al 2006, and our value of 125 y for the German Bight fits well in this picture. No information on age of A. islandica form the Norwegian coast or Kattegat has been available so far, but our estimate for the A. islandica individual lifetime energy budget parameters.…”

Section: Growth and Longevity Of A Islandicasupporting

confidence: 81%

“…A. islandica is a long-lived bivalve species with a maximum age ranging from 40 y in the Baltic Sea (Zettler et al 2001, Begum et al 2009) to ;400 y off Iceland (Scho¨ne et al 2005b; see also Thompson et al 1980b). A. islandica is a suitable archive of past environmental conditions that can be reconstructed from morphological and biogeochemical properties of the shell (e.g., Epple et al 2006, Scho¨ne et al 2005b. Its wide geographical range of occurrence combined with its longevity makes A. islandica a prime candidate for monitoring and modeling long-term environmental and ecological dynamics (Harding et al 2008).…”

Section: Introductionmentioning

confidence: 99%

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Growth and Energy Budget Models of the BivalveArctica islandicaat Six Different Sites in the Northeast Atlantic Realm

Begum

Basova

Heilmayer³

et al. 2010

Journal of Shellfish Research

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We compared lifetime and population energy budgets of the extraordinary long-lived ocean quahog Arctica islandica from 6 different sites-the Norwegian coast, Kattegat, Kiel Bay, White Sea, German Bight, and off northeast Iceland-covering a temperature and salinity gradient of 4-10°C (annual mean) and 25-34, respectively. Based on von Bertalanffy growth models and size-mass relationships, we computed organic matter production of body (P SB ) and of shell (P SS ), whereas gonad production (P G ) was estimated from the seasonal cycle in mass. Respiration (R) was computed by a model driven by body mass, temperature, and site. A. islandica populations differed distinctly in maximum life span (40 y in Kiel Bay to 197 y in Iceland), but less in growth performance (f# ranged from 2.41 in the White Sea to 2.65 in Kattegat). Individual lifetime energy throughput, as approximated by assimilation, was highest in Iceland (43,730 kJ) and lowest in the White Sea (313 kJ). Net growth efficiency ranged between 0.251 and 0.348, whereas lifetime energy investment distinctly shifted from somatic to gonad production with increasing life span; P S /P G decreased from 0.362 (Kiel Bay, 40 y) to 0.031 (Iceland, 197 y). Population annual energy budgets were derived from individual budgets and estimates of population mortality rate (0.035/y in Iceland to 0.173/y in Kiel Bay). Relationships between budget ratios were similar on the population level, albeit with more emphasis on somatic production; P S / P G ranged from 0.196 (Iceland) to 2.728 (White Sea), and P/B ranged from 0.203-0.285/y. Life span is the principal determinant of the relationship between budget parameters, whereas temperature affects net growth efficiency only. In the White Sea population, both growth performance and net growth efficiency of A. islandica were lowest. We presume that low temperature combined with low salinity represent a particularly stressful environment for this species.

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Section: Growth and Longevity Of A Islandicasupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Growth and Energy Budget Models of the BivalveArctica islandicaat Six Different Sites in the Northeast Atlantic Realm

Begum

Basova

Heilmayer³

et al. 2010

Journal of Shellfish Research

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“…Growth synchrony among G. pilosa individuals indicates that some aspect of the environment influences growth, though relationships between shell growth and external factors can be complex, especially in shallow coastal environment with highly variable conditions (Eppl e et al, 2006). Previous sclerochronological studies have identified temperature as one of the main drivers of shell growth.…”

Section: Discussionmentioning

confidence: 99%

The bivalve Glycymeris pilosa as a multidecadal environmental archive for the Adriatic and Mediterranean Seas

Peharda

Black

Purroy

et al. 2016

Marine Environmental Research

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“…Recorded MLSPs (MLSP rec ) of A. islandica differ regionally between populations from sub-Arctic environments around Iceland (IC) with individual ages of more than 350years (Schöne et al, 2005;Wanamaker et al, 2008), and from the German Bight (GB) with recorded individual MLSPs of 150years (Witbaard and Klein, 1994;Witbaard et al, 1999;Epplé et al, 2006). Low salinity populations with conspicuously shorter life expectancies have established in brackish waters of the sub-Arctic White Sea with a MLSP rec of 53years and the temperate Baltic Sea with MLSP rec of 40years (Begum et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Physiological responses to self-induced burrowing and metabolic rate depression in the ocean quahogArctica islandica

Strahl

Brey

Philipp

et al. 2011

Journal of Experimental Biology

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SUMMARYArctica islandica is the longest-lived non-colonial animal found so far, and reaches individual ages of 150years in the German Bight (GB) and more than 350years around Iceland (IC). Frequent burrowing and physiological adjustments to low tissue oxygenation in the burrowed state are proposed to lower mitochondrial reactive oxygen species (ROS) formation. We investigated burrowing patterns and shell water partial pressure of oxygen (P O2 ) in experiments with live A. islandica. Furthermore, succinate accumulation and antioxidant defences were recorded in tissues of bivalves in the normoxic or metabolically downregulated state, as well as ROS formation in isolated gills exposed to normoxia, hypoxia and hypoxia/reoxygenation. IC bivalves burrowed more frequently and deeper in winter than in summer under in situ conditions, and both IC and GB bivalves remained burrowed for between 1 and 6days in laboratory experiments. Shell water P O2 was <5kPa when bivalves were maintained in fully oxygenated seawater, and ventilation increased before animals entered the state of metabolic depression. Succinate did not accumulate upon spontaneous shell closure, although shell water P O2 was 0kPa for over 24h. A ROS burst was absent in isolated gills during hypoxia/reoxygenation, and antioxidant enzyme activities were not enhanced in metabolically depressed clams compared with normally respiring clams. Postponing the onset of anaerobiosis in the burrowed state and under hypoxic exposure presumably limits the need for elevated recovery respiration upon surfacing and oxidative stress during reoxygenation.

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Sclerochronological records of Arctica islandica from the inner German Bight

Cited by 33 publications

References 26 publications

Growth and Energy Budget Models of the BivalveArctica islandicaat Six Different Sites in the Northeast Atlantic Realm

Growth and Energy Budget Models of the BivalveArctica islandicaat Six Different Sites in the Northeast Atlantic Realm

The bivalve Glycymeris pilosa as a multidecadal environmental archive for the Adriatic and Mediterranean Seas

Physiological responses to self-induced burrowing and metabolic rate depression in the ocean quahogArctica islandica

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