Original paper

Instar determination, length-mass and length-length relationships for the larvae of Chaoborus punctipennis Say from a southeastern (USA) cooling reservoir

Chimney, Michael J.; Herring, Mary K.; Bowers, James A.

Fundamental and Applied Limnology Volume 168 Nr. 2 (2007), p. 163 - 168

published: Feb 1, 2007

DOI: 10.1127/1863-9135/2007/0168-0163

BibTeX file

ArtNo. ESP141016802006, Price: 29.00 €

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Abstract

Instar determination, length-mass and length-length relationships for Chaoborus punctipennis Say larvae from a southeastern (USA) reservoir are described. Only head capsule length proved useful in determining instar stage. Power functions best fit length-length relationships among head capsule length, thorax width and body length. Power functions of body length, total length and thorax width were the best predictors of larval dry and ash-free dry mass. Thorax width may be a more reliable predictor of mass since it is not influenced by curvature of the body as body-length measurements may be. Summary statistics for head and body dimensions and length-mass regressions from this study were comparable to data in the literature for C. punctipennis.

Keywords

allometry • chaoborus punctipennis • instar determination • length-length regression • length-mass regression • mass estimate