New PDF release: Advances in the Study of Behavior, Vol. 2

By Daniel S. Et Al [Eds] Lehrman

ISBN-10: 0120045028

ISBN-13: 9780120045020

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Extra info for Advances in the Study of Behavior, Vol. 2

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LEVELS OF AND 'I'HYKOID ACTIVITY, OXYGEN MATINGHEHAVIOK ~;ONSUMPI'ION, The role of the thyroid in the regulation of the expression and character of mating behavior received considerable attention during a broad study of reproductive processes which included the functioning of adult males and females from gametogenesis and mating through pregnancy. In our work such measures of thyroid activity as oxygen consumption, heart rate, and the level of serum protein-bound iodine (PBI) in untreated, propylthiouracil-treated, thyroidec tomized, and thyroxinetreated subjects were employed.

1935a). From the beginning of heat mounting declines, relatively little being exhibited 3 or 4 hours later. Although displayed by one group of females during as many as 91% of the heat periods, the amount shown is extremely variable. The 1939 published report on the behavior of intact females states that 89 of 98 animals mounted. Of these, 13 mounted once, 21 SEXUAL BEHAVIOR IN THE GUINEA PIG 37 FIG. 14. Diestrous (a) and estrous (b,c,d) responses of the female guinea pig. , 1937. 4OC b 3oc 2OC 10C 1 1 2 4 6 8 Hours before and after beginning of heat FIG.

Gerall suggested that the greater the frequency with which infantile responses such as those involved in play are emitted during infancy and puberty, the lower the likelihood that they will later interfere with the mature sexual pattern. According to this hypothesis, the probable reason for the normality of subjects reared in the wider mesh cages is that sufficient social stimuli are present to stimulate these males to play and leap about in their cages. The alternative hypothesis is drawn from ethological theory.

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Advances in the Study of Behavior, Vol. 2 by Daniel S. Et Al [Eds] Lehrman

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