7267

• UCREFRP Catalog Number: 7267
• Author: Persons, W. R. and R. V. Bulkley.
• Title: Adult Striped Bass Movements and Feeding, Colorado River Inlet, Lake Powell, 1980
• USFW Year: 1980.
• USFW - Doc Type: Annual Report.
• Copyright Material: NO

The majority of bass captured had empty stomachs (68%) and intestinal
tracts (63%) (Table 3). Only 32% of stomachs examined contained food items.
Threadfin shad was the item most frequently found in bass stomachs (29%).
Red shiners, crayfish, and unidentified fish remains were occasionally found
in bass stomachs. Food items were more common in stomachs and intestines of
immature, maturing, and spent fish than in mature fish. A greater percentage
of females had food items in stomachs than did males although only 42% of
females captured were mature whereas approximately 88% of the males were
mature.
Walleye ranged in size from 384 to 657 mm total length (mean = 538 mm).
Walleye stomach contents were similar to those of striped bass; shad was the
principal food item consumed. However, a greater percentage of walleye (63%)
had food in their stomachs than did bass (32%).
Figure 2. Preferred spawning temperature of striped bass.
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TEMPERATURE (°C)
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