The body size distribution of chosen species of rotifera in different types of small water bodies in the Wielkopolska region
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Date
2008
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Abstract
Small water bodies are often characterised by specific macrophytes
species composition and different level of predation and this may also have an effect
on the body length and shape of rotifer specimens. The main aim of the study was to
determine the relation of rotifers representing different body size, towards specific
kinds of pond (mid-forest, pastoral and man-made) and to three kinds of
hydromacrophytes (nymphaeids, elodeids and helophytes) as well as comparatively
to the open water zone. Five species of a wide range of distribution in various
ecological habitats were analysed: Anuraeopsis fissa, Brachionus angularis, Filinia
longiseta, Keratella cochlearis and K. quadrata. The examined water bodies differed
in respect to fish presence. Morphometrical analysis of specimens of particular rotifer species showed that both the type of water body relating to different land use
in the catchment area as well as microhabitat type significantly influenced their size
and shape. E.g. Anuraeopsis fissa, whose specimens were significantly smaller in
ponds with a strong anthropogenic impact, were found to be largest among stands
of helophytes and smallest within the open water zone.
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This work was supported by the Polish Committee for Scientific Research (KBN)
under grant no. 2P06S 00829.
Keywords
zooplankton, rotifers, ponds, body size
Citation
3rd European Pond Conservation Network Workshop, Valencia (Spain), 2008, poster