218 SOME MINUTE ANIMAL PARASITES 



but more than one planont can invade any cell ot 

 the gut (Fig. 40, C). Thus, rapid increase in the 

 numbers of the parasite within the same host is 



FIG. 40 NOSEMA APIS: PLANONTS AND MERONTS 



A, Group of planonts from chyle stomach of the bee ; B, amoeboid 

 planont creeping over epithelial cell of bee's gut ; C, cell from 

 the gut of the bee containing young trophozoites ; D, growing 

 uninucleate trophozoite or meront within an epithelial cell ; 

 E, meront with nucleus divided into four, about to form four 

 spores 



ensured, not only by the multiplication of single 

 planonts within individual cells of the gut, but by 

 the multiplication of colonies of parasites within the 

 same cell. 



