Effects of changes in alternative prey densities on predation of drifting lake sturgeon larvae (Acipenser fulvescens)
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منابع مشابه
Growth and Appetite of Juvenile Lake sturgeon Acipenser fulvescens
–Growth rates of juvenile lake sturgeon (initial weight 8 to 9 g, temperature 17.5° C), fed twice a day on brown worms for 56 days increased from -1.5% BW/d (% body wet weight/day) at zero ration to 2.6% BW/d at a ration of 13.2% BW/d. Maintenance ration was 1.6% BW/d. Fish fed larger rations had higher energy densities and lower water content. Appetite (average volitional daily food consumptio...
متن کاملCoding of sound direction in the auditory periphery of the lake 1 sturgeon , Acipenser fulvescens
Michaela Meyer, Arthur N. Popper, Richard R. Fay 3 4 Department of Biology and Center for Comparative and Evolutionary Biology of Hearing, 5 University of Maryland, College Park, MD 20742, USA 6 Parmly Hearing Institute, Loyola University of Chicago, Chicago, IL 60626, USA 7 8 9 Running head: coding of sound direction in sturgeon 10 11 Contact information: Michaela Meyer 12 Eaton-Peabody Labora...
متن کاملCoding of sound direction in the auditory periphery of the lake sturgeon, Acipenser fulvescens.
The lake sturgeon, Acipenser fulvescens, belongs to one of the few extant nonteleost ray-finned fishes and diverged from the main vertebrate lineage about 250 million years ago. The aim of this study was to use this species to explore the peripheral neural coding strategies for sound direction and compare these results to modern bony fishes (teleosts). Extracellular recordings were made from af...
متن کاملCohesive social behaviour shortens the stress response: the effects of conspecifics on the stress response in lake sturgeon Acipenser fulvescens.
An examination was made of whether social interactions can have a beneficial effect through the attenuation of the stress response in a social species. In the first experiment, one larger (mean +/-s.e. 194.0 +/- 12.5 g) and seven smaller (32.0 +/- 2.6 g) juvenile lake sturgeon Acipenser fulvescens were placed in tanks to determine whether a classic dominance effect would be established based on...
متن کاملMultiple molecular approaches yield no evidence for sex-determining genes in lake sturgeon (Acipenser fulvescens)
Common DNA-based sexing assays have been widely used for the conservation and management of mammals and birds. However, many fishes do not have genetic sex determination and in those that do, the plasticity of the genes involved means that species-specific assays are normally required. Such DNAsexing markers would be especially valuable in lake sturgeon (Acipenser fulvescens) because of their s...
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ژورنال
عنوان ژورنال: Journal of Freshwater Ecology
سال: 2017
ISSN: 0270-5060,2156-6941
DOI: 10.1080/02705060.2017.1375440