Effect of temperature and food levels on the growth and condition of juvenile Sepia elliptica (Hoyle 1885): an experimental approach

Effect of temperature and food levels on the growth and condition of juvenile Sepia elliptica... Temperature and ration level can differentially affect growth and life history characteristics of marine organisms. In this experiment we reared juvenile cuttlefish, Sepia elliptica , under two feeding regimes (satiation and half satiation) and two temperature regimes (25 and 30°C). This study examined differences in somatic growth, muscle tissue structure and composition as a function of temperature and food levels. We estimated body mass and the concentration of water, carbohydrate, protein and lipid in the mantle muscle tissue for each individual. Both high water temperature and high feeding rations increased growth rates. Temperature appeared to change the rates of muscle fibre generation and fibre growth similarly. In contrast, the ration level altered the relative rates of fibre production and fibre growth. The muscle tissue of individuals reared at 30°C had higher concentrations of carbohydrate and protein. In contrast, increasing ration levels only increased carbohydrate concentrations in the muscle tissue. The muscle tissue of reared juveniles had lower concentrations of carbohydrate and protein than wild individuals of similar size. In conclusion, water temperature and feeding levels both affect somatic growth, but the nature of the effect at the sub-organismal level differs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Experimental Marine Biology and Ecology Elsevier

Effect of temperature and food levels on the growth and condition of juvenile Sepia elliptica (Hoyle 1885): an experimental approach

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Publisher
Elsevier
Copyright
Copyright © 1998 Elsevier Science B.V.
ISSN
0022-0981
eISSN
1879-1697
D.O.I.
10.1016/S0022-0981(98)00058-6
Publisher site
See Article on Publisher Site

Abstract

Temperature and ration level can differentially affect growth and life history characteristics of marine organisms. In this experiment we reared juvenile cuttlefish, Sepia elliptica , under two feeding regimes (satiation and half satiation) and two temperature regimes (25 and 30°C). This study examined differences in somatic growth, muscle tissue structure and composition as a function of temperature and food levels. We estimated body mass and the concentration of water, carbohydrate, protein and lipid in the mantle muscle tissue for each individual. Both high water temperature and high feeding rations increased growth rates. Temperature appeared to change the rates of muscle fibre generation and fibre growth similarly. In contrast, the ration level altered the relative rates of fibre production and fibre growth. The muscle tissue of individuals reared at 30°C had higher concentrations of carbohydrate and protein. In contrast, increasing ration levels only increased carbohydrate concentrations in the muscle tissue. The muscle tissue of reared juveniles had lower concentrations of carbohydrate and protein than wild individuals of similar size. In conclusion, water temperature and feeding levels both affect somatic growth, but the nature of the effect at the sub-organismal level differs.

Journal

Journal of Experimental Marine Biology and EcologyElsevier

Published: Nov 1, 1998

References

  • The selection of suitable indices for the measurement and analysis of fish condition
    Bolger, T.; Connolly, P.L.
  • Are all prey created equal? A review and synthesis of differential predation on prey in substandard condition
    Mesa, M.G.; Thomas, P.P.; Gadomski, D.M.; Petersen, J.H.

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