A few examples of parasites found in three-spined sticklebacks



CESTODES:


Schistocephalus solidus (tapeworm)


Wild-caught stickleback infected with multiple S. solidus plerocercoids (photo credits: Martin Kalbe)


Stickleback experimentally infected with one giant S. solidus plerocercoid (photo credits: Dan Benesh)




TREMATODES:


Apatemon sp. (eye fluke)


one apatemon sp. metacercariae (left) and one apatemon sp. cyst (right) (photo credits: Noémie Erin)
Apatemon sp. metacercariae inside the eye and freed from the eye (photo credits: Noémie Erin)



Diplostomum pseudospathaceum (eye fluke)


Metacercariae inside an eyelens (photo credits: Noémie Erin)
Metacercariae freed from the eyelens (photo credits: Noémie Erin)



Cyathocotilidae gen. sp.


Metacercarial cyst on the eye (photo credits: Noémie Erin)




CRUSTACEANS:


Argulus sp. (fish lice)


Argulus attached to a stickleback head (photo credits: Noémie Erin)
Argulus Face A / Face B (photo credits: Noémie Erin)




MICROSPORIDIANS:


Glugea anomala


Multiple glugea cysts (photo credits: Martin Kalbe, Noémie Erin)