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Articles 1 - 10 of 10
Full-Text Articles in Behavior and Ethology
Aquatic Feeding By Moose: Seasonal Variation In Relation To Plant Chemical Composition And Use Of Mineral Licks, D. Fraser, B. K. Thompson, D. Arthur
Aquatic Feeding By Moose: Seasonal Variation In Relation To Plant Chemical Composition And Use Of Mineral Licks, D. Fraser, B. K. Thompson, D. Arthur
Feeding Behavior Collection
Activity of moose (Alces alces) was studied at aquatic feeding areas and at natural, sodium-rich licks during four periods covering late May to early September. Aquatic feeding increased from period 1 (late May and early June) to period 2 (late June and early July) and had declined by late July. Major activity at mineral licks occurred earlier in the season than aquatic feeding, especially for males. Chemical composition of aquatic plants showed no seasonal changes corresponding to the peak of aquatic feeding in period 2, although the sodium content of some species declined in period 3. We suggest that moose …
An Analysis Of Howling Response Parameters Useful For Wolf Pack Censusing, Fred H. Harrington, L. David Mech
An Analysis Of Howling Response Parameters Useful For Wolf Pack Censusing, Fred H. Harrington, L. David Mech
USGS Northern Prairie Wildlife Research Center
Gray wolves (Canis lupus) were studied from April 1972 through April 1974 in National Forest in northeastern Minnesota by radio-tracking and simulated howling. Based during 217 of 456 howling sessions, the following recommendations were derived for using howling as a census technique: (1) the best times of day are dusk and night; (2) July, August, and are the best months; (3) precipitation and winds greater than 12 km/hour should be avoided; (of 5 single howls should be used, alternating "flat" and "breaking" howls; (5) trials should 3 times at about 2-minute intervals with the first trial at lower …
Feeding Behavior Of Three Species Of Spionid Polychaetes, Thomas Lane Stokes Jr.
Feeding Behavior Of Three Species Of Spionid Polychaetes, Thomas Lane Stokes Jr.
Biological Sciences Theses & Dissertations
Observations of feeding behavior of three species of spionid polychaetes (Paraprionospio pinnata, Polydora ligni, and Streblospio benedicti) were performed in currents ranging from 0 to 10 cm/sec over fine and coarse sediments and in high and low suspended particle loads. These interface feeders may suspension feed, deposit feed, or both simultaneously using a pair of anterior tentaculate feeding palps. P. ligni and S. benedicti were found to alter their palp behaviors in response to experimental manipulations. P. ligni reacted strongly to currents by suspension feeding with coiled palps. S. benedicti reacted strongly and complexly to food particle type and availability. …
Determining The Uptake And Possible Assimilation Of The Plant Component Of Spartina Detritus By Palaemonetes Pugio Using A Rapid Radiolabeling Method, Michael Peter Crosby
Determining The Uptake And Possible Assimilation Of The Plant Component Of Spartina Detritus By Palaemonetes Pugio Using A Rapid Radiolabeling Method, Michael Peter Crosby
Biological Sciences Theses & Dissertations
Assimilation of the plant components of Spartina alterniflora detritus by the grass shrimp, Palaemonetes pugio, was investigated in a laboratory feeding study. A new radiolabeling procedure was utilized to label the sterilized detritus with 14C. Organic carbon values were calculated for both S. alterniflora and P. pugio. The grass shrimp were found to assimilate significantly the detritus, with an assimilation efficiency of approximately 14%, and an approximate ingestion rate of 2.508 x l0-4mg C detritus/mg C shrimp hour-l occurred. It is hypothesized that coprophagous activity may be important to the completion of digestion of …
Parallel-Arm Maze Performance Of Sighted And Blind Rats: Spatial Memory And Maze Structure, Robert H.I. Dale
Parallel-Arm Maze Performance Of Sighted And Blind Rats: Spatial Memory And Maze Structure, Robert H.I. Dale
Scholarship and Professional Work - LAS
Sighted and peripherally blinded groups of rats learned to obtain a small reward from each arm of an eight-arm parallel maze, and a sighted group was similarly trained on a radial maze. The parallel-sighted and parallel-blind groups were equally slow, and much slower than the radial-sighted group, to attain criterion performance. The three groups shared several response characteristics: selectively avoiding the most recently entered arms, frequently choosing adjacent arms, and an absence of 'spatial generalization' among the arms. The findings support a simple model proposing how subjects identify and choose among the maze-arms.
Predation By Wild Coyotes: Behavioral And Ecological Analyses, Michael C. Wells, Marc Bekoff
Predation By Wild Coyotes: Behavioral And Ecological Analyses, Michael C. Wells, Marc Bekoff
Ethology Collection
Predatory behavior of coyotes (Canis latrans) was studied between 1977 and 1980 in the Grand Teton National Park, Jackson, Wyoming. Major prey were voles (Microtus spp.), Uinta ground squirrels (Spermophilus armatus), pocket gophers (Thomomys talpoides), and grasshoppers (Locustidae). Coyotes typically rushed and ran down squirrels; when hunting mice, coyotes pounced and stabbed at them with their forepaws. Sequence structure was similar, though sequences directed to squirrels were significantly more variable. When juvenile coyotes hunted mice, sequences were similar to those performed by adults that hunted mice. Adults and juveniles were about equally successful. The size of prey last eaten influenced …
Spatial Learning As An Adaptation In Hummingbirds, Susan Cole, F. Reed Hainsworth, Alan Kamil, Terre Mercier, Larry L. Wolf
Spatial Learning As An Adaptation In Hummingbirds, Susan Cole, F. Reed Hainsworth, Alan Kamil, Terre Mercier, Larry L. Wolf
Avian Cognition Papers
An ecological approach based on food distribution suggests that hummingbirds should more easily learn to visit a flower in a new location than to learn to return to a flower in a position just visited, for a food reward. Experimental results support this hypothesis as well as the general view that differences in learning within and among species represent adaptations.
Behavioral Ecology Of Coyotes: Social Organization, Rearing Patterns, Space Use, And Resource Defense, Marc Bekoff, Michael C. Wells
Behavioral Ecology Of Coyotes: Social Organization, Rearing Patterns, Space Use, And Resource Defense, Marc Bekoff, Michael C. Wells
Ethology Collection
Two groups of coyotes in which genealogical relationships were known were studied in the Grand Teton National Park, outside of Jackson, Wyoming, U.S.A., from 1977-1982. One group, a pack consisting of parents and some non-dispersing and non-breeding offspring, defended a territory and the food (mainly elk carrion) contained within it, especially during winter, and also had helpers at den sites (5 of 6 were males). The other group, a mated resident pair, all of whose young dispersed during the first year of life, did not defend a territory and never had helpers at dens. Delayed dispersal and retention of some …
Response Strategies In The Radial Arm Maze: Running Around In Circles, Sonja I. Yoerg, Alan C. Kamil
Response Strategies In The Radial Arm Maze: Running Around In Circles, Sonja I. Yoerg, Alan C. Kamil
Papers in Behavior in Biological Sciences
The effects of the size of the central arena on the use of response strategies by rats on an eight~arm elevated maze were examined. The size of the central arena had no effect on accuracy, but the use of adjacent arms increased significantly with a larger central arena, regardless of the size of arena to which rats were first exposed. These results are interpreted in terms of foraging efficiency.
The Bead Game: Response Strategies In Free Assortment, Alan B. Bond
The Bead Game: Response Strategies In Free Assortment, Alan B. Bond
Alan Bond Publications
Subjects were presented with a collection of spherical beads of four different colors and were instructed to sort them as fast and as accurately as possible. The sequence in which the beads were sorted was recorded, along with the time intervals between successive beads. Subjects were observed to sort in nonrandom sequences, producing runs in which a given bead type was taken exclusively. The speed and accuracy of the sorting process was positively correlated with the degree of nonrandomness of the sorting sequence. This relationship appeared to be primarily attributable to perceptual factors involved in the initiation of a run …