42 



UNIVERSITY OF WISCONSIN STUDIES 



LIST OF FISHES WITH REMARKS ON PARASITES 



Aquidens pulcher, Chusco 



Table VI A shows that this fish carries eight species of 

 parasites, four of which were not found in other fishes. It also 

 (Table VI A) has a very large number of parasites per individ- 

 ual. 



TABLE VI* 

 A. AQUIDENS PULCHER 



* All divisions of this table are arranged on the same plan. Numbers occurring under 

 columns headed by the name of a parasite refer to number of fishes infected; the second number 

 being the average for the total catch of fishes. 



fThis species is very transparent. It may have occurred before July 9 and been overlooked. 

 It also kaves its host readily and swims in the water. Such behavior makes statistical records even 

 more unreliable. 



Astyanax bimaculatus , Sardina 



This fish (Table VI B) has nine species of parasites, the 

 largest number of any fish examined in Lake Valencia. Its 

 number of parasites per individual is not large (Table VII). 

 It is commonly eaten for food by predacious fishes and other 

 animals and, as would be expected, carries several immature 

 parasites. 



Astyanax metae, Sardina 



Four fishes of this species were caught in the Rio Castano, 

 July 27. Three carried no parasites; one had fourteen nema- 

 todes encysted among its viscera. 



