Príklady eel

• Examination of eels on day 112 revealed no indication for acquired immunity resulting from the primary infection.

• A suite of three digenean eel specialist species occurred in all three lagoons, of which any two members dominated each community.

• Movements of eels of this nature would also explain the differences in parasite dispersion patterns evident in the same month.

• The eels of each species were divided into four groups, each containing approximately 25 specimens and acclimated for two weeks prior to the experimentation.

• The general trend was for increasing damage as eel size increased, thus suggesting accumulation of pathological effects.

• Introduced monogeneans are pests in the eel trade.

• The mean number of species per eel ranged from 0.7 to 1.7 per eel, and the maximum never exceeded three.

• The cortisol levels of the control eels which were not inoculated with larvae did not show any significant change over the experimental period.

• For experimental infections eels were transferred individually to experimental tanks.

• All analyses were carried out on the entire sample of eels, as individual samples were too small to be sub-divided by eel length.

• They are not known to act as intermediate hosts for any of the acanthocephalans found in the eels.

• In the present study, a significant correlation was found between parasite infection and body length of eels.

• Interestingly, these authors also noted that the proportion of eels with damaged swimbladders thereafter decreased.

• After a six-week exposure, eels were transferred to clean water for 2 days to avoid contamination while sampling.

• From these species, nine are eel-specific parasites whereas seven species are generalists which also infect other fish species.