Population Dynamics of the St. Marys River Fish Community 1975 ...
Population Dynamics of the St. Marys River Fish Community 1975 ...
Population Dynamics of the St. Marys River Fish Community 1975 ...
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Table 12. Incidence and proportion <strong>of</strong> occurrence <strong>of</strong> food items (based on stomach content identification) for select species from<br />
<strong>the</strong> <strong>St</strong>. <strong>Marys</strong> <strong>River</strong>, August – September 2006.<br />
Walleye Nor<strong>the</strong>rn pike Smallmouth bass Yellow perch<br />
Incidence<br />
No. stomachs examined 225 65 155 1503<br />
% void 68 72 52 57<br />
35<br />
Percent <strong>of</strong> Occurrence<br />
Unidentified fish remains 41.6 8.7 26.3 23.1<br />
Crayfish 21.7 54.0 60.5<br />
Alewife 2.9<br />
Rainbow smelt 46.0 8.7 0.8<br />
Mayfly 0.7 3.8<br />
Gizzard shad<br />
Unidentified zooplankton 1.0 1.1<br />
Spiny water flea<br />
Dragon fly<br />
Yellow perch 26.0 7.1<br />
Cisco 1.4 0.1<br />
Slimy sculpin 3.6 5.0 2.1<br />
Johnny darter 3.4<br />
Unidentified terrestrial insects 0.6<br />
Ninespine stickleback 1.4 13.0 2.0 1.8<br />
Threespine stickleback<br />
Snails<br />
White sucker 2.2 8.7 2.0<br />
O<strong>the</strong>r 13.0 2.0 2.3<br />
35
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