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Zmiany wybranych cech dzdzownic Eisenia fetida [Sav.] w odpadach z celulozy

100%

Kostecka J.

Zeszyty Problemowe Postępów Nauk Rolniczych

2004

tom 498

119-125

The aim of the research was to check the Eisenia fetida earthworm capability to inhabit a habitat of pure cellulose and to check the influence of such conditions on the earthworm biomass and survival rate. The observations were in progress for 7 months, in vases of one liter capacity filled with grained cellulose of 70% humidity. The content of each vase was systematically watered, and 4.5 g of sugar was added four times to half of the vases. Mature specimens of Eisenia fetida of known biomasses were used in the experiment. They were weighed and their survival rate and ability to maintain the signs of maturity were checked. It was noticed that the medium of pure cellulose secured the survival rate of all the observed specimens of Eisenia fetida. The average sum of biomass of the observed populations fluctuated but at the end of the research it was the same as at the beginning as far as the containers with pure cellulose are concerned. The addition of sugar increased the average sum of biomass. The earthworms did not reproduce (laid single cocoons) but a positive effect of sugar addition on their capability to reproduce was noticed. None of the earthworms fed with sugar lost its signs of maturity while in the containers with no sugar added 20% of the specimens were found immature at the end of the research.

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1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Kostecka J.

1 2004

Wyniki wyszukiwania

Zmiany wybranych cech dzdzownic Eisenia fetida [Sav.] w odpadach z celulozy