http://www.cnr.it/ontology/cnr/individuo/prodotto/ID48747
A simple toxicological bioassay using phototactic behaviour of Balanus amphitrite (Darwin) nauplii: role of some cultural parameters and application with experimental biocides (Articolo in rivista)
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- A simple toxicological bioassay using phototactic behaviour of Balanus amphitrite (Darwin) nauplii: role of some cultural parameters and application with experimental biocides (Articolo in rivista) (literal)
- Anno
- 2002-01-01T00:00:00+01:00 (literal)
- Alternative label
Faimali M., Magillo F., Piazza V., Garaventa F., Geraci S. (2002)
A simple toxicological bioassay using phototactic behaviour of Balanus amphitrite (Darwin) nauplii: role of some cultural parameters and application with experimental biocides
in Periodicum biologorum
(literal)
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- Faimali M., Magillo F., Piazza V., Garaventa F., Geraci S. (literal)
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- Titolo
- A simple toxicological bioassay using phototactic behaviour of Balanus amphitrite (Darwin) nauplii: role of some cultural parameters and application with experimental biocides (literal)
- Abstract
- The aim of the present work was the optimisation and application of a
simple laboratory test, using the phototactic behaviour of Balanus
amphitrite nauplii as an index of physiological stress at sub-lethal level.
The method consisted on counting the individuals attracted by a light
source, and the percent of positive responding individuals (phototactic
response, %R+) was calculated. The role of some cultural parameters which
are likely to affect the entity of light-response (photoperiod,
temperature, oxygen, developmental stage, presence of food), the
sensibility of the different naupliar stages, and the effect of different
potential antifouling substances and CdCl2 were investigated.
The cultural parameters producing larvae with a higher phototactic
response have been determined and fixed: 20°C, no aeration, no feeding and
a 12:12 L:D photoperiod, with the phototactic test performed before 2:00
pm. The most sensible naupliar stage, in relation to toxic stress,
resulted to be the II, both for acute toxicity and phototactic test. After
48-hours of exposure, the reduction in phototactic response for treated
samples was significant for all the tested substances, while acute
toxicity test showed no detectable difference compared to the controls. (literal)
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