An enhanced humoral immune response against the swimbladder nematode, Anguillicola crassus, in the Japanese eel, Anguilla japonica, compared with the European eel, A. anguilla

The humoral immune response in the two eel species, Anguilla japonica and Anguilla anguilla against two fractions of antigens in Anguillicola crassus were studied . Within species, both eel species showed significantly elevated titres compared with controls when immunized with antigens from Anguilli...

Full description

Bibliographic Details
Published in:Journal of Helminthology
Main Author: Nielsen, M.E.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1999
Subjects:
Online Access:http://dx.doi.org/10.1017/s0022149x99000359
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X99000359
Description
Summary:The humoral immune response in the two eel species, Anguilla japonica and Anguilla anguilla against two fractions of antigens in Anguillicola crassus were studied . Within species, both eel species showed significantly elevated titres compared with controls when immunized with antigens from Anguillicola crassus. In interspecific comparison, Anguilla japonica showed significantly elevated titres in comparison with Anguilla anguilla . Immunization of Anguilla anguilla caused a significantly decrease in the plasma levels of protein in comparison with control fish and all groups of Anguilla japonica. In contrast, Anguilla japonica showed significantly lower plasma levels of Ig in all groups compared with Anguilla anguilla. The different susceptibilities to Anguillicola crassus between the natural host, Anguilla japonica , and the naı¨ve, Anguilla anguilla , is partly due to differences in the ability of the two eel species to mount a humoral immune response.