A Small Invasive Fish Called the Stone Moroko Was Introduced

question 85

Multiple Choice

A small invasive fish called the stone moroko was introduced into Europe from China.The fish carries an intracellular parasite that does not harm the moroko but is a generalist parasite.It attacks various other species of fish, causing higher mortality and inability to spawn.It is implicated in the rapid decline of the now-endangered European sunbleak (a member of the carp family) .Which is the most likely result of the introduction of the intracellular parasite into European fresh water?

• A) It will remain mostly in the stone moroko and have little effect.
• B) It will enter other fish, but they will quickly adapt to it.
• C) It will decrease fish biodiversity because it attacks many kinds of fish.
• D) It will kill other fish but can be stopped by eliminating the stone moroko.
• E) It will enter other fish but will be unable to become established.