Lethal and sub-lethal effects of acid, aluminium and lime on Gammarus pulex during repeated simulated episodes in a Welsh stream

Autor:	C. Peter McCahon, M. J. Poulton
Rok vydání:	1991
Předmět:	Amphipoda biology Ecology chemistry.chemical_element Aquatic Science engineering.material biology.organism_classification complex mixtures Crustacean Gammarus pulex Animal science Pulex chemistry Aluminium Toxicity engineering Pomphorhynchus laevis Lime
Zdroj:	Freshwater Biology. 25:169-178
ISSN:	1365-2427 0046-5070
DOI:	10.1111/j.1365-2427.1991.tb00482.x
Popis:	SUMMARY. 1. A soft-water stream in upland mid-Wales was dosed with sulphuric acid, aluminium sulphate and limestone slurry to produce a zone of aluminium at low pH. and one of aluminium, low pH and added lime. 2. Three episodes of 24-h duration were induced, each separated by a 12-h inter-dosing period, and the responses of the crustacean Gammarus pulex monitored throughout. 3. G. pulex parasitized by the acanthocephalan Pomphorhynchus laevis were significantly more sensitive than unparasitized individuals. 4. Liming significantly reduced mortality during dosing but postexposure deaths were greatest for animals which had been exposed in the time zone. 5. The disruption of precopulalory behaviour in G. pulex was rapid and liming did not mitigate this response.
Databáze:	OpenAIRE
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