![]() ![]() Twenty-four individually isolated aquaria were used to test behavior during a 12 h light : 12 h dark cycle versus continuous darkness. The ultimate goal of the study was to develop a better understanding of potential competition for resources among these five fish groups. The study was designed to assess the strength of the innate linkage of substrate and availability of food in foraging by early juvenile Pallid Sturgeon, early juvenile Shovelnose Sturgeon, their juvenile hybrids, and adult Sicklefin Chub and Shoal Chub. The primary objective of this study was to assess the substrate component of habitat selection, specifically selection between sand and mud substrates, as it relates to food availability and quantity relative to presence or absence of a photoperiod (i.e., lack of light). hyostoma feed on those same macroinvertebrates throughout life. platorynchus, Sicklefin Chub Macrhybopsis meeki, and Shoal Chub M. Juvenile Pallid Sturgeon Scaphirhynchus albus predominantly consume midges (family Chironomidae) and other macroinvertebrates, while Shovelnose Sturgeon S. ![]()
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