. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 84 CALIFORNIA FISH AND GAME occasions trout were observed in obviously unsuccessful pursuit of small* schools of them. It will clearly be inadvisable to introduce R. oscula into lakes under | conditions comparable to those at Blue Lake with the idea in mind of ' improving feeding conditions for the trout. They are not consumed in significant quantities, and in addition they may compete seriously with BttTLE. u^RvAe ^<-''"*^ &q
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 84 CALIFORNIA FISH AND GAME occasions trout were observed in obviously unsuccessful pursuit of small* schools of them. It will clearly be inadvisable to introduce R. oscula into lakes under | conditions comparable to those at Blue Lake with the idea in mind of ' improving feeding conditions for the trout. They are not consumed in significant quantities, and in addition they may compete seriously with BttTLE. u^RvAe ^<-''"*^ "~ "**«»,,^ K'-'^'f-y^ .^'^ ^V. /lamo\VA 5 /iNStCTS ^OsJt'Xf CHlRONOKllO /'"^"^^''•^^A LARVAE. 34-V. \ CHIRONOMID ^S,^^ \ PUPAt X \ ^ Fig. 37. A: Stomach contents of 18 Blue Lake trout fing-erliii{?s (:! to ,^) cm.) taken September, 1940. B: Stomach contents of 17 Blue Lake minnows, Rhinichthys osculaj taken July, 1941. young trout for food. In this connection, a considerable overlap was found to occur between the food of minnows and of trout fingerlings in Blue Lake. A series of young trout, 3 to 5 cm. long, was seined from around the shore of the lake in September of 1940, shortly after they had been introduced from the hatchery. The results of the analysis of the food in their stomachs is given in Figure 37-A. The series of minnows which was taken at the same time for comparison of feeding habits was not well enough preserved for study, but another series, taken in mid- summer of 1941, was studied, and the results will be found in Figure 37-B, While neither the young trout nor the minnows provide sufficiently extensive series for a reliable index of their foods during the summer, they nevertheless do show, with- out question, that the minnows eat the sort of thing upon which the small trout were feeding, and ]:)robably compete severely with them. The paucity of organisms in the littoral zone of Blue Lake has been pointed out. Stomachs from 61 trou
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