320 Sporozoa 



strikingly long in proportion to size of the spore and may measure 25- 

 500[j.. The sporoplasm is binucleate in some Microsporida and uninucleate 

 in others. As seen in invaded tissues, the spores often lie in groups within 

 the sporont membrane, the number of spores being more or less charac- 

 teristic of certain species. 



After a spore is ingested by a new host the sporoplasm emerges as an 

 amoeboid trophozoite (Fig. 6. 32, A), which may pass through the gut 



Fig. 6. 31. Spores of Microsporida: A, B. Coccomyxa slavinae, mature 

 spore and one with extruded filament; x3700 (from Kudo, after Leger and 

 Hesse). C. MrazckJa lumbricidi, binucleate sporoplasm; xl820 (after Jirovec). 

 D, E. Octosporea bayeri, from living (D), and Feulgen preparation showing 

 two nuclei (E); x2340 (after Jirovec). F. Spirogliigea octospora, x3900 (from 

 Kudo, after Leger and Hesse). G. Toxoglugea vibrio, x3900 (from Kudo, 

 after Leger and Hesse). H. Nosema termitis, x2990 (after Kudo). L Duboscqia 

 legeri, x3120 (after Kudo). J, K. Plistophora intestinalis , from Giemsa and 

 Feulgen preparations; x2700 (after Jirovec). L. Glugea acerinae, Giemsa 

 stain; x2700 (after Jirovec). M. Thelohania cladocera, two nuclei, Feulgen 

 stain; x2700 (after Jirovec). N, O. Telomyxa glugeiformis, unstained and 

 stained; x5400 (from Kudo, after Leger and Hesse). P, Q. Racillidiinn argoisi, 

 hematoxylin preparation (P); Feulgen preparation showing spiral nucleus 

 (Q); xl950 (after Jirovec), R. Cougourdella magna, x2600 (after Hesse). S. 

 Stempellia magna, x2070 (after Kudo). T. Xosema elongatum, Feulgen stain; 

 x3300 (after Jirovec). U. Gurleya richardi. x3240 (from Kudo, after CepMe). 



