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Sex and sodium intake in the rat.
Female rats drink more 3% NaCl solution than do males, both when they need sodium (need-induced sodium intake or sodium appetite) and when they do not (need-free sodium intake). The sexual dimorphism… Expand
Hormonal control of behavior in the Japanese quail.
Food and light as entrainers of circadian running activity in the rat
Abstract The purpose of this experiment was to determine the extent to which circadian running activity could be controlled by two different environmental cues: periodic access to food and ambient… Expand
Structure and function in circadian timing systems: Evidence for multiple coupled circadian oscillators
Considerable progress has been made in elucidating the mechanisms underlying the generation of circadian rhythmicity. This review describes several distinct lines of evidence which converge on the… Expand
Group mating among Norway rats II. The social dynamics of copulation: Competition, cooperation, and mate choice
The social interactions within groups of Norway rats (Rattus norvegicus) had a strong impact on the individual pattern of copulation which, in turn, affects sperm precedence and the probability of… Expand
Effects of the male's copulatory behavior on successful pregnancy of the female rat.
- N. Adler
- Journal of comparative and physiological…
The Role of the Female During Copulation in Wild and Domestic Norway Rats (Rattus Norvegicus)
The copulatory behavior of both wild and domestic strains of Rattus norvegicus was observed via continuous video monitoring as it spontaneously occurred in the large seminatural environment and under… Expand
Classical conditioning and punishment of an instinctive response in
Summary Normal Betta splendens males extend their gill membranes to the visual stimulus of their mirror image or another male. This response was classically conditioned to a weak electric shock. Gill… Expand