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Helgoländer Meeresuntersuchungen

, Volume 34, Issue 3, pp 257–262 | Cite as

On condition factor measurements in Pacific herring larvae

  • H. v. Westernhagen
  • H. Rosenthal
Article

Abstract

Condition factors (CF = mg · mm−3 · 100) of Pacific herring larvae from Departure Bay, Canada, were determined from two larval year classes and compared for yolk sac and post-yolk sac feeding larvae. Decline in condition factors for yolk sac larvae was similar in both years. Subsequent increase of condition factors after passing the transitional phase between loss of yolk and first feeding was identical for both years. The occurrence of emaciated larvae in 1976 was attributed to poor food supply during the “critical period” (the time of first food uptake).

Keywords

Clupea Harengus Prey Concentration Yolk Volume Poor Food Supply Clupea Harengus Pallasi 
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

© Biologische Anstalt Helgoland 1981

Authors and Affiliations

  • H. v. Westernhagen
    • 1
  • H. Rosenthal
    • 1
  1. 1.Biologische Anstalt Helgoland (Zentrale)Hamburg 50Federal Republic of Germany

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