370
THE BfOLOQY OF EUPHAUSIIDS
because the spermatophores are formed during the period January
to March while Thalassomyces fagei does not develop to a stage when
it is noticeable until March or April. Hoffman and Yancey (I966),
however, found that none of the 77 infected specimens of Thysanoessa
FIG. 130. The developmental stages of the ellobiopsid parasite, Thalassomyces fagei, in
the cephalothorax of Thysanoessa raschii ; the horizontal line represents the car&pace. (After Mauchline, 1966b.)
raschii examined by them had the male antenna1 armature and petasma
or the female thelycum developed.
Adult parasites, with external gonomeres, are only found in
Thysanoessa raschii in the Firth of Clyde and in Alaskan coastaI waters
THE BfOLOQY OF EUPHAUSIIDS
because the spermatophores are formed during the period January
to March while Thalassomyces fagei does not develop to a stage when
it is noticeable until March or April. Hoffman and Yancey (I966),
however, found that none of the 77 infected specimens of Thysanoessa
FIG. 130. The developmental stages of the ellobiopsid parasite, Thalassomyces fagei, in
the cephalothorax of Thysanoessa raschii ; the horizontal line represents the car&pace. (After Mauchline, 1966b.)
raschii examined by them had the male antenna1 armature and petasma
or the female thelycum developed.
Adult parasites, with external gonomeres, are only found in
Thysanoessa raschii in the Firth of Clyde and in Alaskan coastaI waters