influence of anguillicola crassus (nematoda) and ichthyophthirius multifiliis (ciliophora) on swimming activity of european eel anguilla anguilla.we investigated the swimming activity of 70 european eels anguilla anguilla in relation to natural infection with 2 parasite species: the eel-specific swimbladder nematode anguillicola crassus and the non-specific skin and gill protozoan ichthyophthirius multifiliis. we measured how long individual eels exposed to a water current in a swimming channel with a steady-stream profile could withstand the water current. the parasites affected the swimming behaviour of eels in different ways. the maxim ...200415460857
an infection of gyrodactylus anguillae ergens, 1960 (monogenea) associated with the mortality of glass eels (anguilla anguilla l.) on the north-western mediterranean sea board of spain.the association of gyrodactylus anguillae ergens, 1960 with the glass eel stage of anguilla anguilla (l.) (total body length 61.4±4.9mm; range 55-70) is reported from the north-western mediterranean coast of spain for the first time. a sample of 12,600 glass eels, caught by professional fishermen operating in the mouth of the rivers fluvià, la muga and ter (north-east spain), was subject to mortalities of ∼1.75% of stock/day following transfer to a research facility. subsequent losses over a 31- ...201121482028
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