Development of Anguillicola crassus (Dracunculoidea, Anguillicolidae) in experimentally infected Balearic congers Ariosoma balearicum (Anguilloidea, Congridae)

Diseases of Aquatic Organisms

Bernd Sures¹  Horst Taraschewski¹  Klaus Knopf¹ 

关键词: Anguillicola crassus;    Anguilla anguilla;    Ariosoma balearicum;    Development;    Salinity;    Metaparatenic host;   

DOI  :  10.3354/dao039075

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: The development of Anguillicola crassus in experimentally infected Ariosoma balearicum (Anguilloidea, Congridae) kept in seawater was studied in the laboratory. In parallel trials the effect of water salinity on thedevelopment of larval A. crassus in European eels Anguilla anguilla was also investigated using eels kept in seawater of a salinity of 34o/oo. Both eel species were orally inoculated with L₃ larvae of A.crassus and then maintained for up to 3 mo at 18°C in seawater. 110 d post infection, no adult but larval (L₃ and L₄) stages of A. crassus were detected in the swimbladder wall of Balearic congers, although thisperiod of time was sufficient for the parasites to develop to the adult stage in European eel kept in seawater. The results presented suggest that the definitive host specificity of A. crassus comprises species of the family Anguillidae(i.e. the genus Anguilla), but not members of the Congridae. Theoretically however, A. balearicum might serve as a metaparatenic host. Factors determining the definitive host range of A. crassus remain to be elucidated.Water salinity does not seem to act as a factor affecting definitive host specificity once the parasite has become ingested by the eel.

【 授权许可】

Unknown