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Distribution, density and specific composition of water mites (Acari) in the sublittoral of Lake Banyoles (Spain)

Published online by Cambridge University Press:  01 February 2009

M. Rieradevall  and
M. J. Gil
M. Rieradevall
Affiliation:
Dep. Ecologia, University of Barcelona, Diagonal 645, 08028 Barcelona, Spain
M. J. Gil
Affiliation:
Dep. Didáctica Ciencias Experimentales, University of Zaragoza, San Juan Bosco n° 7, 5009 Zaragoza, Spain
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Abstract

The seasonal and bathymetric occurrence of water mites in the sublittoral and profundal zones of lake Banyoles were studied in 1986-1987. Four species were found in the mud substrate : Neumania deltoides (Piersig, 1894), Neumania imitata Koenike, 1908, Unionicola crassipes (Müller, 1776) and Arrenurus sinuator (Müller, 1776). The maximum depth that water mites reached was 12 m, but they were more frequent and abundant at 5 m depth, mainly in the March-May period (41 individuals per m2). This group represents only 0.08-0.39 % of the total macrobenthic fauna in the sublittoral of lake Banyoles. N. deltoides is the most abundant and widely distributed species. For N. imitata this is the first record in the Iberian peninsula.

Keywords

sublittoral populationwater miteskarstic lakeslake Banyolespopulation sublittoralehydracarienslacs karstiqueslac Banyoles
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 29 , Issue 1 , March 1993 , pp. 41 - 46
Copyright
© Gauthier-Villars, 1993

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