Effects of Introduced Bullfrogs and Smallmouth Bass on Microhabitat Use, Growth, and Survival of Native Red-Legged Frogs (Rana aurora)

2008 ◽  
Vol 12 (4) ◽  
pp. 776-787 ◽  
Author(s):  
Joseph M. Kiesecker ◽  
Andrew R. Blaustein
Keyword(s):  
Smallmouth Bass ◽  
Microhabitat Use ◽  
Growth And Survival ◽  
Rana Aurora

scholarly journals Application of Diel Feeding Chronology to Habitat Suitability Analysis of Warmwater Stream Fishes

1992 ◽  
Vol 49 (7) ◽  
pp. 1417-1430 ◽  
Author(s):  
Thomas J. Kwak ◽  
Michael J. Wiley ◽  
Lewis L. Osborne ◽  
R. Weldon Larimore
Keyword(s):  
Common Carp ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Habitat Suitability ◽  
Smallmouth Bass ◽  
Microhabitat Use ◽  
Micropterus Dolomieu ◽  
Daily Ration ◽  
Suitability Analysis ◽  
Longear Sunfish

Diel feeding chronology and daily ration were determined from stomach or foregut contents of common carp (Cyprinus carpio), golden redhorse (Moxostoma erythrurum), channel catfish (Ictalurus punctatus), smallmouth bass (Micropterus dolomieu), and longear sunfish (Lepomis megalotis) in the Vermilion River, Illinois. Feeding was highly variable among individuals, hours, and months for each species. Discontinuous feeding was detected in common carp, golden redhorse, and channel catfish. Common carp and the two centrarchid species fed with greatest intensity near sunrise and sunset; golden redhorse and channel catfish feeding was highest at night. Daily ration estimates were higher for fishes with stomachs than those for stomachless species. Microhabitats occupied by fish over the diel period were identified using nondisruptive techniques: direct observation, prepositioned electrofishing, and radiotelemetry. Microhabitat use during high-feeding periods was significantly different [Formula: see text] than that during low feeding for at least one habitat variable in each species examined. Association with cover also varied between feeding regimes. Our findings suggest that realism of instream flow assessments may be improved if habitat suitability criteria are stratified by feeding regime.

Microhabitat Use by Smallmouth Bass in an Ozark Stream

2007 ◽  
Vol 22 (2) ◽  
pp. 189-199 ◽  
Author(s):  
Jeffrey D. Fore ◽  
Daniel C. Dauwalter ◽  
William L. Fisher
Keyword(s):  
Smallmouth Bass ◽  
Microhabitat Use

Food and foraging behavior in relation to microhabitat use and survival of age-0 Atlantic salmon

1998 ◽  
Vol 55 (1) ◽  
pp. 116-127 ◽  
Author(s):  
Keith H Nislow ◽  
Carol Folt ◽  
Marco Seandel
Keyword(s):  
Atlantic Salmon ◽  
Foraging Behavior ◽  
High Velocity ◽  
Field Experiments ◽  
Growth Period ◽  
Food Abundance ◽  
Invertebrate Drift ◽  
Microhabitat Use ◽  
Growth And Survival ◽  
Influence Of Food

We examined, using underwater snorkeling observations and field experiments, the influence of food availability on foraging behavior, habitat use, and survival of age-0 Atlantic salmon (Salmo salar) during the critical first-summer growth period. While most feeding attempts were directed at drifting invertebrate prey, we found a higher rate of benthic feeding forays than previously reported for salmon. Greater food abundance was associated with higher feeding foray rates, more time allocated to foraging, occupancy of higher microhabitat velocities, and greater first-year survival between two study streams. Experimental drift reduction reduced drift foray rates and triggered a change in behavior to increased benthic feeding. In contrast, within a single stream, greater predicted invertebrate drift in high-velocity microhabitats (1 m2) was unrelated to either microhabitat occupancy or drift foray rates of age-0 salmon. We suggest that, in some situations, salmonid foraging is related more directly to overall prey density than to the availability of high-velocity, high drift rate microhabitats. Differences in resource tracking (increased foraging, growth, or survival with increased food abundance) at different scales, along with the use of alternative predation modes, underscore the importance of considering behavior when linking food resources to growth and survival of stream salmonids.

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