Effect of strange male odour on parental care in lactating female mice

Biparental care systems are a valuable model to examine conflict, cooperation, and coordination between unrelated individuals, as the product of the interactions between the parents influences the fitness of both individuals. A common experimental technique for testing coordinated responses to changes in the costs of parental care is to temporarily handicap one parent, inducing a higher cost of providing care. However, dissimilarity in experimental designs of these studies has hindered interspecific comparisons of the patterns of cost distribution between parents and offspring. Here we apply a comparative experimental approach by handicapping a parent at nests of five bird species using the same experimental treatment. In some species, a decrease in care by a handicapped parent was compensated by its partner, while in others the increased costs of care were shunted to the offspring. Parental responses to an increased cost of care primarily depended on the total duration of care that offspring require. However, life history pace (i.e., adult survival and fecundity) did not influence parental decisions when faced with a higher cost of caring. Our study highlights that a greater attention to intergenerational trade-offs is warranted, particularly in species with a large burden of parental care. Moreover, we demonstrate that parental care decisions may be weighed more against physiological workload constraints than against future prospects of reproduction, supporting evidence that avian species may devote comparable amounts of energy into survival, regardless of life history strategy.

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A family with oedipal dynamics

Psychoanalysis and Psychotherapy in China ◽

10.33212/ppc.v3n1.2020.111 ◽

2020 ◽

Vol 3 (1) ◽

pp. 111-118

Author(s):

Li Yanling ◽

David E. Scharff

Keyword(s):

Family Therapy ◽

Parental Care ◽

Young Woman ◽

Discussion Group ◽

Entire Group ◽

Group Leaders ◽

Couple And Family Therapy ◽

Supervision Group ◽

The Way

The following case presents the way that overtly oedipal identification in a young woman covered failure in early parental care and discontent between her parents. The case was presented by Li Yanling to her supervision group, and the commentary and elaboration have been gathered from comments from the entire group of advanced supervisees, all of whom were discussion group leaders in the Beijing Continuous Program in Psychoanalytic Couple and Family Therapy.

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HUMAN URINARY GONADOTROPHINS ASSAYED BY DIFFERENT RESPONSES IN THE SAME ANIMAL

Acta Endocrinologica ◽

10.1530/acta.0.xxxiv0375 ◽

1960 ◽

Vol XXXIV (III) ◽

pp. 375-389 ◽

Cited By ~ 1

Author(s):

P. S. Brown

Keyword(s):

Postmenopausal Women ◽

Ovarian Response ◽

The Other ◽

Relative Potency ◽

Vaginal Opening ◽

Serial Sections ◽

Immature Female ◽

Female Mice ◽

Marked Disparity ◽

Relative Potencies

ABSTRACT Selected human urinary gonadotrophins were assayed against one another using various measures of response in the same immature female mice. Intact or hypophysectomized animals were used and in some experiments the results of hypophysectomy were checked in complete serial sections. Extracts from the urine of two subjects with Turner's syndrome were compared. In intact mice, the relative potency judged by the ovarian response differed from that shown by the uterine response and the 95 % fiducial limits of the two estimates did not overlap. When the mice were hypophysectomized, one extract became much less potent while the other did not. Similar differences were shown in the response of intact mice to urinary extracts from two subjects with Klinefelter's syndrome. There was a marked disparity between the relative potencies shown by the uterine response and by the incidence of vaginal opening. Similar differences were not shown between the responses to different extracts from the urine of normal postmenopausal women, but these extracts were known to differ little in quality. The results are interpreted in terms of qualitative differences between human urinary gonadotrophins.

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Early Life Exposure to Antibiotic Alters Energy Balance during Chronic High-Fat Feeding in Adult Male and Female Mice

Diabetes ◽

10.2337/db18-1999-p ◽

2018 ◽

Vol 67 (Supplement 1) ◽

pp. 1999-P ◽

Cited By ~ 1

Author(s):

HYE LIM NOH ◽

SUJIN SUK ◽

RANDALL H. FRIEDLINE ◽

KUNIKAZU INASHIMA ◽

DUY A. TRAN ◽

...

Keyword(s):

Energy Balance ◽

Adult Male ◽

Early Life ◽

High Fat ◽

Male And Female ◽

Female Mice ◽

Early Life Exposure ◽

Fat Feeding

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