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Title
  • en Synthesis toward a global model of metabolism and chemical composition of medusae and ctenophores
Creator
Accessrights open access
Subject
  • Other en ammonia excretion
  • Other en CN composition
  • Other en ctenophores
  • Other en jellyfish
  • Other en medusae
  • Other en O:N ratio
  • Other en respiration
  • NDC 660
Description
  • Abstract en Respiration and ammonia excretion data and chemical composition data [water content, ash, carbon (C), nitrogen (N) and C:N ratios] of a total of 28–72 species of hydromedusae, scyphomedusae, siphonophores and ctenophores from various depths of the world's oceans were compiled. Multiple regression analyses revealed that body mass and habitat temperature but habitat depth were significant predictors for respiration and ammonia excretion rates. The scale exponents of body mass (0.66–1.05) and temperature coefficients (1.7–3.1 as Q10) of the empirical regression models varied greatly by the choice of body mass units (DM, C or N). The O:N ratios (median: 15.0) were independent of these parameters. Body C and N compositions (% of DM) decreased with the increase in either DM or habitat temperature, showing a stable C:N ratio of 3.8 (by mass). Comparison of the present results with global-bathymetric features of chaetognaths, copepods, euphausiids and mysids revealed that the medusae and ctenophores are unique in that they maintain high metabolic rates per unit body N, lack significant effects of habitat depth on metabolic rates, have high specific growth rates, and have little accumulation of energy reserves (lipids) in the body.
Publisher en Elsevier
Date
    Issued2014-07
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/59728
Relation
  • isVersionOf DOI https://doi.org/10.1016/j.jembe.2014.03.006
Journal
    • PISSN 0022-0981
      • en Journal of Experimental Marine Biology and Ecology
      • Volume Number456 Page Start50 Page End64
File
Oaidate 2023-07-26