Productivity and age of the Antarctic scallop (Adamussium colbecki) in the Ross Sea
Heilmayer, O., Brey, T., Chiantore, M., Cattaneo-Vietti, R. and Arntz, W.E. (2003) Productivity and age of the Antarctic scallop (Adamussium colbecki) in the Ross Sea. Journal of Experimental Marine Biology and Ecology, 288, (2), 239-256. (doi:10.1016/S0022-0981(03)00020-0).
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Body size, geographical distribution, and biomass make Adamussium colbecki (Smith, 1902) one of the most conspicuous bivalve species in the Antarctic. Based on samples collected in austral summer 1999/2000 in Terra Nova Bay, the annual formation of shell growth bands visible on X-ray photographs was verified by stable isotope analysis. A general von Bertalanffy growth function was fitted to size-at-age data of 25 individuals (H∞=108.86 mm, K=0.114 year−1, t0=−0.367, D=1.284). Somatic production calculated from mass-specific growth rates was 234.6 kJ m−2 year−1. Gonadal productivity amounted to 70.92 kJ m−2 year−1. Annual somatic and gonad production-to-biomass ratios (P/B) were 0.199 and 0.052, respectively. According to its consumption and production, A. colbecki is likely to play a significant role in the trophic web of Terra Nova Bay.
|Keywords:||Antarctic scallop; Bivalvia; Pectinidae; production; stable isotope analysis|
|Subjects:||Q Science > QL Zoology|
|Divisions:||University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
|Date Deposited:||20 Jul 2007|
|Last Modified:||27 Mar 2014 18:30|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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