Energy partitioning in three species of nematode from polysaprobic environments |
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Authors: | Mark Woombs Johanna Laybourn-Parry |
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Institution: | (1) Department of Biological Sciences, University of Lancaster, Lancaster, U.K. |
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Abstract: | Summary The partitioning of energy in three species of nematode, Paroigolaimella bernensis, Diplogasteritus nudicapitatus and Rhabditis curvicaudata, from a polysaprobic environment is considered. Temperature was shown to have a profound impact on the rate at which these organisms obtained food resources and on the partitioning of energy into growth, reproduction and maintenance. Declining temperature resulted in a reduction in energy consumption and in production and maintenance costs. Absorption efficiencies were relatively low, rarely exceeding 20% and lying on average between 5–15%. Net production efficiencies varied throughout the life-cycle, but attained maximum levels of 70–80%. Females achieved higher net production efficiency than males. The physiology and ecological implications are discussed. |
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