Bethel and Holmes demonstrated
A) positive phototaxis in Acanthocephalans infected by amphipods.
B) negative phototaxis in Acanthocephalans infected by amphipods.
C) positive phototaxis in amphipods infected by Acanthocephalans.
D) negative phototaxis in amphipods infected by Acanthocephalans.
E) increased herbivory by amphipods infected by Acanthocephalans.

Question

Quizplus · Accepted Answer

DBethel and Holmes demonstrated both positive and negative phototaxis in amphipods infected by Acanthocephalans. The parasites manipulate the behavior of their amphipod hosts to increase their chances of being eaten by their definitive hosts, birds, by making the infected amphipods more likely to be exposed in well-lit areas (positive phototaxis) or less likely to seek shelter (negative phototaxis).

Bethel and Holmes Demonstrated