Growth and production of Sterechinus neumayeri (Echinoidea: Echinodermata) in McMurdo Sound,Antarctica |
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| Authors: | T Brey J Pearse L Basch J McClintock M Slattery |
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| Institution: | (1) Institute for Polar and Marine Research, Columbusstrasse, D-27568 Bremerhaven, Germany;(2) Institute of Marine Sciences, University of California, 95064 Santa Cruz, California, USA;(3) Scripps Institution of Oceanography, Marine Life Research Group, 92093-0201 La Jolla, California, USA;(4) Department of Biology, The University of Alabama at Birmingham, 35294, Alabama, USA;(5) Marine Laboratory, UOG Station, University of Guam, 96923 Mangilao, Guam, USA |
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| Abstract: | Population dynamics of Sterechinus neumayeri were investigated at four sites in McMurdo Sound: Cape Evans, McMurdo Station, East Cape Armitage and New Harbor. The annual formation of natural growth bands in the jaws of the Aristotle's lantern was verified by a tagging-recapture experiment. Growth functions based on natural growth bands indicated differences among stations but showed S. neumayeri to be a slow growing species, reaching its maximum diameter of 70 mm at an age of about 40 yr. Annual production ranged between 2.4 (C. Evans) and 0.65 g ash free dry mass m-2 (New Harbor) and was related to differences in food conditions. More than 95% of total production was invested in reproduction, and less than 5% was invested in somatic growth. Consumption estimates for S. neumayeri showed this species to play a significant role in the benthic trophic web of McMurdo Sound. |
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