The influence of cadmium on life-history parameters and gut microflora of <Emphasis Type="Italic">Archegozetes longisetosus</Emphasis> (Acari: Oribatida) under laboratory conditions |
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Authors: | Anna Seniczak Anna Ligocka Stanisław Seniczak Zbigniew Paluszak |
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Institution: | (1) Department of Ecology, University of Technology and Life Sciences, Kordeckiego 20, 85-225 Bydgoszcz, Poland;(2) Department of Microbiology, University of Technology and Life Sciences, Bernardyńska 6/8, 85-029 Bydgoszcz, Poland |
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Abstract: | We tested the effect of cadmium (25, 130 μg Cd g−1), administered via Chinese cabbage (Brassica chinensis L.) as food on life-history parameters and gut microflora of tritonymphs and adults of the oribatid mite, Archegozetes
longisetosus Aoki. Both concentrations of Cd had an adverse effect on offspring mortality, and the higher concentration also reduced female
fecundity, as well as the number of bacteria, fungi and actinomycetes, and it changed the community structure of bacteria;
the proportion of gram-negative bacteria increased while that of gram-positive bacteria declined. Interestingly, at the lower
Cd concentration microflora was more abundant and diverse than in the control group, especially in the tritonymphs, although
the mean activity of gut microflora was reduced. The higher Cd concentration reduced microflora activity both in the tritonymphs
and adults. |
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Keywords: | Heavy metals Oribatid mites Gut microflora |
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