154
MARINE MOLLUSCS AS HOSTS FOR SYMBIOSES
The developmental pattern and stages are the same as those of N .
ostrearum and N . prytherchi except for minor morphological differences.
The sporadins (also known as gregarines or trophozoites) found in the
4
5
FIQS. 31-38. Stages in the life cycle of Nematopsis Zegeri. (31,32) Sporadins or trophozoites engaged in bifurcated and linear syzygy ; (33) associated sporadins attached
to gut epithelium of crustacean host; (34) gymnospore; (35) gymnospore after
entering molluscan host; (36) young sporozoite; (37) cyst in mollusc enclosing six
spores ; (38) germination of spore in gut of crustacean host. (Redrawn after Hatt,
1931.)
gut of Eriphia spinifrons each measures from 75 to 7 5 0 p in length.
These engage in either linear or bifurcated syzygy (Figs. 31 and 32).
MARINE MOLLUSCS AS HOSTS FOR SYMBIOSES
The developmental pattern and stages are the same as those of N .
ostrearum and N . prytherchi except for minor morphological differences.
The sporadins (also known as gregarines or trophozoites) found in the
4
5
FIQS. 31-38. Stages in the life cycle of Nematopsis Zegeri. (31,32) Sporadins or trophozoites engaged in bifurcated and linear syzygy ; (33) associated sporadins attached
to gut epithelium of crustacean host; (34) gymnospore; (35) gymnospore after
entering molluscan host; (36) young sporozoite; (37) cyst in mollusc enclosing six
spores ; (38) germination of spore in gut of crustacean host. (Redrawn after Hatt,
1931.)
gut of Eriphia spinifrons each measures from 75 to 7 5 0 p in length.
These engage in either linear or bifurcated syzygy (Figs. 31 and 32).