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Influence du mode de conservation sur la composition chimique élémentaire de Pontella mediterranea (Copepoda: pontellidae)

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Abstract

A comparative study of the elementary chemical composition (C, H, N) of Pontella mediterranea (males, females and copepodites) was carried out in two series: in Series 1, live copepods were briefly rinsed with distilled water, dried for one night (12 h) at 60°C, and then stored in a desiccator; in Series 2, the copepods were preserved in a 5% formalin-freshwater solution neutralized with borax; they were then rinsed with distilled water, and subsequently dried and stored in a desiccator as in Series 1. The results reveal that the dry weight of preserved copepods (Series 2) is 20 to 25% less than that of fresh, dried individuals. Carbon loss was estimated as about 10% in males and 17% in females, hydrogen loss as 14% in males and 23% in females, and nitrogen loss as 20% in males and 21% in females. The organic compounds lost seem to be mainly proteinaceous. Nevertheless, relative carbon content expressed as percent dry weight, and C:N and C:H ratios were all significantly higher in the preserved specimens. These results are compared with literature data on two other crustancean species.

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Authors and Affiliations

  1. Station Marine d'Endoume et Centre Universitaire de Luminy, Marseille, France

    G. Champalbert & P. Kerambrun

  2. Laboratoire d'Hydrobiologie Marine U.E.R. des Sciences de la Mer et de l'Environment, Centre Universitaire de Luminy, 70, Route Léon Lachamp, F-13288, Marseille Cedex 2, France

    G. Champalbert

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  1. G. Champalbert
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  2. P. Kerambrun
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Communicated by J.M. Pérès, Marseille

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Champalbert, G., Kerambrun, P. Influence du mode de conservation sur la composition chimique élémentaire de Pontella mediterranea (Copepoda: pontellidae). Mar. Biol. 51, 357–360 (1979). https://doi.org/10.1007/BF00389213

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  • DOI: https://doi.org/10.1007/BF00389213

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