. Bulletin. Natural history; Natural history. Fig. 5—Total catch rates of largemouth bass at Lake Sangchrls for untieated and fieated areas from April 1973 througti April 1975. were somewhat lower than rates reported for Lake Shelbyville, a lake of much larger size (McNurney 1978). Catch rates for white bass (fish per man-hour) were high in cold months and low in warm periods (Fig. 7). The highest catch rates occurred in the heated area of the lake. Catch rates improved at Lake Sangchris during 1976 and 1977 as the angling population became more ac- customed to fishing for this recently in- tr
. Bulletin. Natural history; Natural history. Fig. 5—Total catch rates of largemouth bass at Lake Sangchrls for untieated and fieated areas from April 1973 througti April 1975. were somewhat lower than rates reported for Lake Shelbyville, a lake of much larger size (McNurney 1978). Catch rates for white bass (fish per man-hour) were high in cold months and low in warm periods (Fig. 7). The highest catch rates occurred in the heated area of the lake. Catch rates improved at Lake Sangchris during 1976 and 1977 as the angling population became more ac- customed to fishing for this recently in- troduced species (McNurney & Frakes 1979). Carp The number and biomass of carp harvested in various areas of Lake Sangchris between 15 April 1973 and 15 April 1975 are compiled in Table 10. In winter, carp were caught only in the heated area during 1973. Throughout the year the harvest in the heated area was consistently higher than that in the unhealed areas. Since most carp were caught by shore fishermen, the reduced harvest in the unhealed areas may be cor- related to the minimal amount of shoreline accessible to anglers there. The annual harvests of and fish per acre in 1973 and 1974, respectively, were comparable to the fish per acre reported for Thomas Hill Reservoir (Hanson 1974). Summer harvest values for the unhealed areas of Lake Sangchris were and fish per acre for 1973 and 1974, respectively. McNurney (1978) reported summer harvests for Lake Shelbyville of and fish per acre in 1976 and 1977. Summer harvests of carp from the heated area of Lake CHANNEL CATFISH. Fig 6.—Total catch rates of channel catfish at Lake Sangchris for unheated and heated areas from April 1973 through April Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural Hist
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