排序方式： 共有12条查询结果，搜索用时 348 毫秒
1.
Cultural Studies of Science Education - The retention of underrepresented students remains a significant challenge in the STEM (Science, Technology, Engineering and Math) disciplines. A broad range... 相似文献
2.
3.
The diurnal patterning of locomotion, stereotypy, grooming, eating, drinking, sleeping, postural readjustment, and inactivity was studied in 14 species of muroid rodents in the laboratory using a visual observation technique.Microtus canicaudus, M. montanus, M. ochrogaster, andM. pennsylvanicus exhibited acyclic activity patterns, whilePeromyscus eremicus,P. gossypinus, P. leucopus, P. maniculatus bairdi, P. polionotus, Calomys callosus, Mus musculus, andOnychomys leucogaster displayed nocturnality in their behavioral patterning.Rhabdomys pumilio exhibited crepuscular activities andNeofiber alleni displayed a complex pattern of nocturnality. Species differed in total amount of time spent per day for all activities but eating. The acyclicity ofMicrotus species appears to be related to high metabolic rates and a semifossorial life-style. 相似文献
4.
In order to describe more completely the time course of recovery from sexual satiety in male rats, 18 males were tested after each of six recovery intervals: 3, 6, 9, 11, 13, and 15 days. Different recovery rates were found for different measures of behavior. While most measures were restored to baseline levels by 6 days following satiation, the postejaculatory interval following the second ejaculation was still prolonged after 9 days of rest. No changes were seen in the number of intromissions preceding ejaculation. Systematic changes over the course of the experiment were found in the measures of copulatory behavior taken in the sessions that preceded each recovery test. 相似文献
5.
6.
Daniel G. Webster Myles H. Williams Roger D. Owens Vance B. Geiger Donald A. Dewsbury 《Learning & behavior》1981,9(2):173-177
The digging behavior of 12 taxa of muroid rodents was observed on sand and peat substrates. Overall, significantly more digging was performed on peat than on sand. The percentage of animals of each taxon that dug was found to be positively correlated with both the duration of digging and the number of bouts of digging and negatively correlated with latency to dig. Differences across taxa in the duration of digging were correlated with field observations of the nesting behavior of these taxa; taxa that frequently utilize subterranean nest sites exhibited more digging than those that do not. The motor patterns used in digging are described;Mus musculus was the only species that appeared to exhibit a unique digging pattern. Digging behavior appears to be a pattern that is readily elicited in the laboratory, related to behavior in the field, and appropriated for further laboratory study. 相似文献
7.
Donald A. Dewsbury 《Learning & behavior》1976,4(2):177-180
Although cactus mice,Peromyscus eremicus, typically resume copulatory behavior soon after attaining their first ejaculation, they rarely attain additional ejaculations. Experiment I was designed to determine the relative contribution of the male and female to this phenomenon of “ejaculatory failure”—the failure to attain ejaculation despite initiation of a series. Each of 18 male and 18 female cactus mice was tested in three conditions: once with a mated male paired with an unmated female, once with an unmated male paired with a mated female, and once with the original pairing retained. Ejaculatory failure was found to be primarily attributable to changes in the male. In Experiment II, it was found that the inhibitory effects of the first series are largely, but not completely, dissipated after 24 h. The first ejaculatory series appears to produce an elevation of the male’s ejaculatory threshold. 相似文献
8.
Sarah A. Sloane Sandra L. Shea Melissa Miley Procter Donald A. Dewsbury 《Learning & behavior》1978,6(2):244-248
A total of 200 muroid rodents, 20 from each of 10 species from diverse ecological adaptations, were tested for depth perception near the age of weaning. Each animal was given 10 trials in a visual cliff. Seven of the 10 species, Israeli gerbils, California voles, house mice, meadow voles, cactus mice, cotton mice, and deer mice, showed some evidence of depth discrimination. By contrast, white-footed mice, prairie voles, and montane voles showed no evidence of such discriminative ability. Although there was no strong relationship apparent between the usual habitat of the species and their tendency to choose the shallow side in the visual cliff, a relationship was found among ecological factors, open-field behavior, and the latency to make a descent from the centerboard of the visual cliff. 相似文献
9.
Learning & Behavior - The copulatory behavior and nest building behavior of wild house mice (Mus musculus) were examined in an attempt to study the effects of domestication on these behaviors.... 相似文献
10.
D. Kim Sawrey Denis J. Baumgardner Michael J. Campa Bruce Ferguson Alan W. Hodges Donald A. Dewsbury 《Learning & behavior》1984,12(3):297-306
Djungarian hamsters (Phodopus sungorus) were observed in a series of laboratory tests, including home cage activity, wheel running, open-field behavior, sexual dimorphism for body mass, copulatory behavior, tonic and dorsal immobility, climbing, digging, nest building, and parental behavior. Fourteen resulting measures were compared with previous results from this laboratory from a variety of muroid species. A cluster of behavioral adaptations emerged with several marked similarities to the behaviors of a group of North American Microtus species, whereas other behaviors appeared to more closely reflect the classification of the hamsters as cricetines. It is suggested thatPhodopus andMicrotus species may have evolved many similar adaptive characteristics in response to shared environmental variables. 相似文献