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Showing 1 to 6 of 6 for “"Freshwater amphipod"”.
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Systematics of the Freshwater Amphipod Genus <i>Crangonyx</i> (Crangonyctidae) in North America
<p>The systematics of the amphipod genus <em>Crangonyx</em> of North America (north of Mexico) is revised, based on available collections (ca. 2240) and literature dealing with the genus. A grand total of 42 North America species of <em>Crangonyx</em> are recognized in the present study, 24 of them …
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The systematics, distribution and aspects of the ecology of the freshwater amphipod genus Paramelita (Crangonyctoidea: Paramelitidae)
Freshwater amphipods in southern Africa are divided into three distinct elements. Five ingolfiellid species occur in Namibia, six Sternophysinx species are found in the northern Cape Province and Transvaal, while 12 Paramelita species are restricted to the south-western Cape. The crangonyctoid …
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Toxicological studies of the combined effects of aluminium, copper and manganese on a freshwater amphipod in acidic waters
… common metals (Al, Cu and Mn) on the endemic freshwater amphipod Paramelita nigroculos (Barnard) from the south-western Cape region of South Africa. The aims of the work were three-fold: to examine the toxic effects of combinations of the three metals; to investigate such effects on an …
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The effect of the sheep dip pesticide diazinon on behavioural and molecular markers in the freshwater shrimp Gammarus pulex
… and diazinon in a commercial formulation on the freshwater amphipod Gammarus pulex. It was found that diazinon in the commercial formulation was significantly more toxic to G. pulex than diazinon oxon, which in turn was significantly more toxic than diazinon.
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Hypoxia and Ventilation of the Marsupium in the Amphipod, Gammarus Pseudolimnaeus Bousfield
Amphipod crustaceans brood their eggs and young within a marsupium formed by the oostegites of the thoracic legs. I investigated the processes that deliver oxygen and food into the marsupium of Gammarus pseudolimnaeus, a freshwater amphipod common in eastern North America. Dissolved oxygen (DO) in …
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Palladium uptake and its effect on behavioural and molecular markers in the freshwater shrimp Gammarus pulex
… This study aimed to explore the response of the freshwater amphipod Gammarus pulex to PGEs. Investigations included the 96 LC50 test and several behavioural (vertical movement and feeding activity) and biochemical (acetylcholinesterase (AChE); osmoregulation; …