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Marine Biology

, Volume 86, Issue 1, pp 1–11 | Cite as

Multivariate analysis of morphometry and dry weight of Pacific herring larvae

  • M. D. McGurk
Article

Abstract

Bivariate and multivariate condition factors of reared Pacific herring larvae Clupea harengus pallasi were compared in terms of their independence from size, their biological meaning, and their orthogonality. Ratios and residuals of univariate regressions were mixtures of size and shape information, could not be interpreted in terms of allometry, and were highly intercorrelated. All principal components, except the first, were independent of size, their loading patterns revealed reliable information about allometry and they were completely uncorrelated with each other. Examination of the length and weight data of reared and wild Pacific and Atlantic herring larvae reported in the literature indicated that reared larvae are heavier per unit length than wild larvae, that morphometry varies between the two sub-species, and that the effects of enclosure and gear selection confound the calibration of condition factors with reared learning samples. The implications for the use of morphometric condition factors in larval fish ecology are discussed.

Keywords

Multivariate Analysis Unit Length Condition Factor Reliable Information Larval Fish 
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 1985

Authors and Affiliations

  • M. D. McGurk
    • 1
  1. 1.Institute of Animal Resource EcologyUniversity of British ColumbiaVancouverCanada

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