434 Roosevelt Wild Life Annals 



Uther notes on the food oi I'erch less detailed in character are here given. 

 Kendall ('24, p. 308) notes the Perch feeds at times on Smelt (Osinerns inordax). 

 Wilson ('20, p. 227) found 11 species of Odonata nymphs in 66 Perch. Surber 

 ('20, p. 74) considers the Perch of Minnesota carnivorous, preferring minnows, 

 and he says it has been accused of eating the eggs of other fishes, notably those of 

 Pike Perch. Hankinson ('16, p. 151) found adult Perch in the shallow beaver 

 ponds of the Whitefish Point region, Michigan, eating leeches almost entirely. 



As to the methods of feeding, Pearse and Achtenberg made a number of 

 important observations. They found ('20, p. 316) that Perch of the same size at 

 the same time and place usually eat the same food, that they feed chiefly during 

 the day, and that the food is more varied in shallow than in deep water. In general 

 they take the food that is most abundant at the depth where they are found, and 

 eat in proportion to its abundance and availability ; but this is not always the case. 

 They do not take any kind of food that may be abundant, but select certain things 

 (I.e., p. 338). An adult Perch was found by Pearse and Achtenberg (I.e.) to 

 eat about 7% of its weight in a day. Insect larvae are grubbed out of the soft 

 lake bottom (I.e., p. 300). The fish is equipped for almost anything edible and is 

 not a specialized feeder. The small backwardly directed teeth hold struggling 

 prey, and the slender gill-rakers form a strainer for collecting microscopic food. 

 They are adapted for snatching crawfish from among rocks and for securing 

 aquatic insects from plants. The authors found that Perch feed on or near the 

 bottom — in the summer on the bottom near the thermocline — and that there 

 are seasonal variations in their food and feeding habits (I.e., p. 304). After the 

 autumnal overturn they eat largely Cladocera and Corethra, and in the spring 

 come in toward shore to feed among aquatic plants. Evermann and Clark ('20, 

 p. 427) note a shoreward migration in Lake Maxinkuckee, in the fall, to feed on 

 crawfi.sh. Pearse and Achtenberg found that digestion in the Perch is three times 

 more rapid in summer than in winter (p. 338). 



Distribution Records. We made the following collections in shallows, mainly 

 with minnow nets: No. 5, Lower South Bay; No. 7, South Bay; No. 75 R, Scriba 

 Creek tributary; No. 76 G, Scriba Creek; No. jy A, Bullhead Bay; No. 78 I, 

 Bakers Point; No. 81 L. Ditch at Johnsons Bay; No. 86 M, Poddygut Bay; 

 No. 87 K, Chittenango Creek tributary; No. 88 B, Chittenango Creek; No. 90 K, 

 near Chittenango Creek ; No. 94 D, bay near Brewerton ; No. 99 H, Walnut Point ; 

 No. 113 C, Big Bay Creek; No. 116 N, Big Bay Creek; No. 118 D, Big Bay 

 Creek; No. 119, bay near Shaw's Bay; No. 120 O. Big Bay shoal; No. 121 K. 

 Ice House I'.ay ; No. 122 V. Shaw's liay ; No. 138 C, Big Bay; Nos. 309 and 309 C, 

 Lower South Bay; No. t,\^ 1., near Brewerton; No. 345 G. Lower South liay; 

 No. 353 M, Brewerton; No. 400 C, Prober Bay; No. 401 .A. Billington Bay; 

 No. 403 C, .Shackelton Point; No. 412 F. Lakeport Bay; No. 413 N. Douglas 

 Creek; No. 416 K. Lakejiort : No. 418 K. Lakeport Bay: No. 425 I, Dakin Bay 

 Creek; No. 42; j. l),-ikin Bav ; Xn. 441 J. Tafts Hay: No. 4|S D. near Bernhard's 

 Bay; No. 453 G, llmiiianrs liay: .\n. 456 V. West I'ntter Bay; No. 458 F. 

 stream at Ivist I'ntter P.ay ; No. 4fio F, Black Creek, Cleveland: No. 470 II. bay 

 east of Cleveland ; No. 475 I, Long Point Peninsula ; No. 482 E, Fairchild Bay ; 

 No. 483 K, Fairchild Bay; No. 490 K. Three Mile Bay; No. 498 H, Alessengcr 



