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A MODIFIED LADELL APPARATUS FOR THE EXTRACTION OF WETLAND MACROINVERTEBRATES1

Published online by Cambridge University Press:  31 May 2012

Daniel L. Lawson  and
Richard W. Merritt
Daniel L. Lawson
Affiliation:
Department of Entomology, Michigan State University, East Lansing, Michigan 48824
Richard W. Merritt
Affiliation:
Department of Entomology, Michigan State University, East Lansing, Michigan 48824
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Abstract

A modified Ladell apparatus is described which offers a low cost and efficient method of wetland macroinvertebrate extraction. Soil and leaf litter samples, immersed in Mg2SO4 solution, are subjected to agitation and bubbling to promote the extraction of macroinvertebrates. A further modification provides salt solution recycling. Fourteen floodplain taxa were recovered with extraction efficiencies ranging from 80 to 100% at a cost of 15–20 cents (U.S.) per sample.

Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 12 , December 1979 , pp. 1389 - 1393
Copyright
Copyright © Entomological Society of Canada 1979

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References

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