Resource use by stream-dwelling rock bass and smallmouth bass

作者: W. E. Probst , C. F. Rabeni , W. G. Covington , R. E. Marteney

DOI: 10.1577/1548-8659(1984)113<283:RUBSRB>2.0.CO;2

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摘要: Abstract We examined food and habitat use of sympatric smallmouth bass Micropterus dolomieui rock Ambloplites rupestris in the Current Jacks Fork rivers, Missouri. Use resources was similar between species within a species. On total caloric basis, importance prey ranked crayfish > fish insects. The similarities both types size selection indicated that were not mechanism ecological segregation bass. Habitat evaluated by underwater observation. Location highly correlated with some aspect cover, especially woody structure. Although cover overlapped among classes species, more often associated rootwads log complexes (aggregates logs branches). Cover independent size, but shorter than 350 mm long used vegetation boulders found open wate...

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