. Bulletin. Natural history; Natural history. TOTAL LENGTH (mm) Fig. 9 —Length-frequency distribution for 2,612 gizzard shad collected from Lake Sangchris in September 1976. surveys conducted from 1974 to 1976, less than 6 percent of the more than 15,000 yellow bass collected were larger than 160 mm ( in.). Sule et al. (1981) reported that as a result of food resource partitioning among the various fishes in Lake Sangchris, the relatively small-sized yellow bass were relegated to feeding primarily upon zooplankton throughout their life history rather than switching to fish (a more nutritiou
. Bulletin. Natural history; Natural history. TOTAL LENGTH (mm) Fig. 9 —Length-frequency distribution for 2,612 gizzard shad collected from Lake Sangchris in September 1976. surveys conducted from 1974 to 1976, less than 6 percent of the more than 15,000 yellow bass collected were larger than 160 mm ( in.). Sule et al. (1981) reported that as a result of food resource partitioning among the various fishes in Lake Sangchris, the relatively small-sized yellow bass were relegated to feeding primarily upon zooplankton throughout their life history rather than switching to fish (a more nutritious food) at larger sizes. This type of niche segregation was suggested as a mechanism which may have suppressed growth and contributed to further stunting of the yellow bass population. Although comprised of small individuals, the bluegill population in Lake Sangchris ranked fourth in abundance (biomass) and constituted percent of the total catch per unit effort by weight. The September length- frequency distribution revealed a mode near 50 mm, which apparently reflected growth of age 0 fish, and another mode at approximately 90 mm, which probably represented growth of age I-i- and older fish (Fig. 11). Joy & Tranquilli (19796) concluded that the growth of bluegill at age 0 in Lake Sangchris in 1976 was equal to, but thereafter was probably less than, YELLOW BASS = TOTAL LENGTH (mm) Fig. 10,—Length-frequency distribution of 1,071 yellow bass collected from Lake Sangchris in September 1976. 16 14 BLUEGILL N= 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 History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
