Parental Care in Mammals by Peter H. Klopfer (auth.), David J. Gubernick, Peter H.

By Peter H. Klopfer (auth.), David J. Gubernick, Peter H. Klopfer (eds.)

The editors of this quantity have venerated me by means of their invitation to put in writing its Fore­ be aware, a call for participation prolonged as a result of my enhancing a ebook at the maternal behav­ ior of mammals in 1963. a lot as i want to imagine that I had opened a brand new quarter of study-and so performed a few half within the visual appeal of this tremendous new collec­ tion of chapters-the proof are fairly another way. that during 1963 i'll gather the efforts of many distinct investigators exhibits that the subject had already engaged their consciousness, and had for a few years previous. yet even then, the subject had origins extending a lot farther into the earlier, to say in simple terms Wiesner and Sheard's publication Maternal habit within the Rat of 1933. however, in 1963 it appeared to me that the learn of maternal care in mammals had lagged at the back of the research of different types of social habit. the current quantity does a lot to set up parental care of the younger as an issue critical to an realizing of the relation among ontogeny and phylogeny, to the advance of the younger, to the social association of the species, and to its renovation. it might probably now be obvious not just as fascinating yet as a so much signifi­ cant development of habit between mammals.

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The reason for the high mortality was not given; very likely lactation was blocked. Measures of maternal behavior and scent-marking frequencies did not differ between control and hormone-treated groups. This experiment is difficult to interpret with respect to the hormonal stimulation of maternal behavior. High levels of plasma progesterone could have affected the secretion or the action of several other hormones (estrogen and prolactin). A third experiment employed, with slight modification, the hormonal regimen used by Moltz et at.

Unpublished) recently tested two hormonal regimens for their effects on the induction of maternal behavior. These were modeled after similar studies among ewes (see above). In the first study intact does were treated to induce lactation by the administration of estradiol-17 (3 and progesterone for 7 days, no hormone treatment for the following 10 days, and 5 days of treatment with hydrocortisone. During the course of this treatment they were tested either with newborn kids or kids less than 2 days of age, after 3 or 6 days of estrogen/ progesterone treatment, and again on the 21st or 22nd day during the administration of hydrocortisone.

1973). , 1967; Wiesner and Sheard, 1933). Leon et at. (1978) and Woodside (1978) have recently shown that one component of maternal behavior is modulated mainly by adrenocortical hormone (cortisone) and partly by prolactin. In earlier studies Leon (see review, 1978) has shown that production of excess maternal pheromone (contained in the volatile caecotrophic portion of feces) by 2-week postpartum females is a consequence of the high levels of prolactin that are secreted during late pregnancy and lactation, which, in turn, increase food intake of the lactating female (Fleming, 1976, 1977).

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