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The effect of food on the determination of sex ratio in Calanus spp.: evidence from experimental studies and field data

Irigoien, X. and Obermuller, B. and Head, R.N. and Harris, R.P. and Rey, C. and Hansen, B.W. and Hygum, B.H. and Heath, M.R. and Durbin, E.G. and , TASC (Funder) (2000) The effect of food on the determination of sex ratio in Calanus spp.: evidence from experimental studies and field data. ICES Journal of Marine Science, 57 (6). pp. 1752-1763. ISSN 1054-3139

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    Abstract

    The effect of food concentration on the sex ratio in Calanus spp. has been investigated in laboratory and mesocosm experiments. The results of the experiments are compared with time series in the field and with physiological rates. The food concentration and quality had an effect on the sex ratio of adult Calanus, with higher percentages of males obtained with increased food concentration. Laboratory experiments and field time series suggest that sex can still change at stage CIII-CIV, but is determined at stage CV. The energy budget of males was very unbalanced, suggesting that the shorter lifespan often reported could be due to exhaustion of lipid stores.

    Item type: Article
    ID code: 18643
    Keywords: calanus spp., copepods, sex ratio, fish, statistics, marine ecology, Mathematics
    Subjects: Science > Mathematics
    Department: Faculty of Science > Mathematics and Statistics
    Related URLs:
      Depositing user: Mrs Ann Lynch
      Date Deposited: 08 Apr 2010 15:14
      Last modified: 14 Mar 2012 15:47
      URI: http://strathprints.strath.ac.uk/id/eprint/18643

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