PERONOSPORALES 1029 



Zoophagus tentaclum Karling 



Mycologia, 28: 308, figs. 1-5. 1936 

 (Fig. 85 H, p. 1029) 



"Mycelium filamentous, greatly extended, 3-6 ;jl in diameter, hyaline, 

 branched and continuous; possessing numerous relatively short special- 

 ized lateral branches, 15-35 \j. in length and 3-5 u, in diameter,^which 



Fig. 85. Zoophagus 



A-G. Zoophagus insidious SommerstorfF, capturer of rotifers: A, portion 

 of mycelium with short peglike lateral branches modified for capture of 

 rotifers; two captured animals are shown in outline form; B, dead rotifer 

 within which is a complex of hyphae which have become transformed into 

 zoosporangia and have discharged their zoospores; C, discharged mass of 

 protoplasm about to undergo cleavage into zoospores; D, zoospores under- 

 going cleavage; E, single zoospore; F, encysted zoospore undergoing repeated 

 emergence; G, germinating septate gemma from which new mycelia are 

 forming. H. Zoophagus tentaclum Karling, lateral branch with three capturing 

 tentacles, to one of which a rotifer is attached. 



{A, Sparrow, 1932b; B-F, Arnaudow, 1921; G, after Arnaudow, 1925; //. 

 Karling, 1936c) 



