Marine Biology

, Volume 50, Issue 3, pp 263–273 | Cite as

Discussion of methods of investigating the food of fishes, with reference to a preliminary study of the prey of Gobiusculus flavescens (Gobiidae)



The validity, reliability and practicability of different methods for the investigation of stomach contents of a small, plankton-eating fish are discussed. Tests demonstrated the problems related to mass and volume measurements of planktonic food. Several nutrition indices, particularly Hynes's “frequency of occurrence” are criticized. A logarithmic version of Shorigin's index is proposed as a replacement for Ivlev's food selection index. A preliminary study on the food of Gobiusculus flavescens (Fabricius), sampled in July, 1975 at Helgoland, provides some numerical information on the composition of its stomach contents and food preference.


Volume Measurement Stomach Content Food Preference Selection Index Food Selection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • J. Berg
    • 1
    • 2
  1. 1.Zoologisches Institut der Universität HamburgHamburgGermany (FRG)
  2. 2.Zoologisches Museum der Universität HamburgHamburgGermany (FRG)

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