One of the most frequently encountered assertions concerning the concept of social dominance is that high rank confers priority of access to resources. There have been few systematic studies to document the reliability of this relationship. We report a recent study in which the hypothesis of close linkage between social rank and access to resources was… (More)
Neonatal rat ultrasound repetition rates were monitored in response to 6 odor cues, including 1 novel, 2 predator, and 3 conspecific olfactory stimuli. Contrary to predictions of previous studies, predator odor did not elicit consistently low call rates. A significant difference was detected between litters tested with the same odor cue for the foreign and… (More)
The effects of ovariectomy with or without supplementary treatment with estradiol benzoate (EB) and progesterone on reproductive behavior and organ weights were studied in adult lemmings. The sex behavior of intact diestrous and untreated castrated females was similar, and both groups behaved differently from intact estrous females in terms of scores for… (More)
When tested in a Y-maze olfactometer, sexually experienced and sexually naive brown and collared lemmings (Lemmus sibiricus = trimucronatus and Dicrostonyx groenlandicus) preferred the odor of conspecific females to the odor of females of another species. Both experienced and naive males also preferred the odor of conspecific females to that of conspecific… (More)
The effects of prepubertal social contact and postpubertal mating experience on sexual behavior were examined in male and female brown lemmings (Lemmus sibiricus). Subjects of both sexes were either isolated at weaning (18 days) or then housed with siblings for another 10 days before being isolated. Before testing for sexual behavior at the age of 75 days,… (More)
When tested in a Y-maze olfactometer, male brown and collared lemmings (Lemmus sibiricus = trimucronatus and Dicrostonyx groenlandicus) preferred the odor of unmated receptive females to the odor of females with which they had just copulated. Similarly, sexually satiated males preferred the odor of an unmated receptive female to that of a strange female… (More)
Three groups of female lemmings were tested to determine the effects of odor familiarity on measures of reproductive behavior. A familiar odor (FO) group was exposed to the bedding of a particular male for 1 wk, then tested with that male. A second female group (unfamiliar odor; UO) was exposed to the bedding of a male for 1 wk, then tested with a different… (More)
Warder Clyde Allee, (1885-1955) was a pioneer American scientist in the fields of ecology and animal behavior. His contributions to the development of a general animal sociology are discussed, with particular attention to his concept of animal cooperation and his research in the area of dominance hierarchies.