A trypanosome from the plaice, Pleuronectes platessa L. |
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Authors: | B J Cottrell |
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Institution: | Department of Environmental Science, Plymouth Polytechnic, Plymouth, U.K. |
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Abstract: | The results of a 12 month study of Trypanosoma platessae Lebailly (1904), a haemoflagellate parasitising the plaice, Pleuronectes platessa L., are presented. The morphological features of the trypanosome are described, with experimental investigations of the host specificity of T, platessae . The flagellate occurred at low parasitaemias in wild plaice with a seasonal variation in the numbers of infected hosts, the percentage of parasitised fish reaching a maximum of 20 % in March and declining in the summer months. Attempts to establish T. platessae in the laboratory, by means of passage of infected blood, gave inconsistent results. Elevated levels of β-globulins were detected in the sera of T. platessae infected plaice, and it is suggested that this may be associated with antibody secretion to the parasite. |
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