Variations in sexual dimorphism in the skulls of rats subjected to malnutrition, castration, and treatment with gonadal hormones
Bibliographic Data
| ID | 8317263 |
|---|---|
| Authors | Silvia Lucrecia Dahinten (0000-0002-9969-7674, Universidad Nacional de La Plata), Héctor M Pucciarelli (Universidad Nacional de La Plata) |
| Year | 1986 |
| Volume | 71 |
| Issue | 1 |
| Pages | 63-67 |
| Publication date | 1986-09-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | American Journal of Physical Anthropology (JOURNAL) |
| Journal identifiers | ISSN: 0002-9483 • E-ISSN: 1096-8644 |
| Publisher | Wiley (PUBLISHER • GB) |
| DOI | 10.1002/ajpa.1330710108 |
| PMID | 3777148 |
| OpenAlex | W1966788604 |
| Language | EN |
| Citations received | 5 |
| References cited | 14 |
Two groups of weanling rats were subjected to malnutrition, one with periodic injections of testosterone (males) and the other with estradiol (females). Two other groups (castrated males or castrated females) received normal feedings. In control animals, the relative weights (mg/gm body weight) of testes, seminal vesicles, and ovaries were greater than in malnourished rats. However, relative weights of those organs in hormone‐treated, malnourished animals were greater than in those subjected to malnutrition alone and still greater than in controls. Normal sexual cranial dimorphism (SCD) was decreased 16% by male castration, 23% by malnutrition, and 83% by estradiol treatment in malnourished females. On the other hand, normal SCD was increased 20% by female castration and more than 200% by testosterone treatment in malnourished males. All monosexual comparisons corroboratedthe bisexual range of distances found. Testicular but not ovarian secretions seemed to influence sexual cranial dimorphism. Malnutrition delayed SCD because of a deficiency of testosterone level in stressed males. It is suggested that estradiol in females may counteract sexual cranial development and that its inhibitory effect may be additive to the testosterone deficit evoked by malnutrition
Biology · Castration · Gonadal hormones · Gonadal Steroid Hormones · Hormone · Malnutrition · Sexual dimorphism · Steroid · Zoology · Birth, Development, and Health · Endocrinology · Internal Medicine · Medicine · Physiology · Sexual Differentiation and Disorders
Héctor Mario Pucciarelli
The experimental method in Biological Anthropology. History and current status in Argentina
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Sexual dimorphism in schoolchildren of the Villa Iapi neighborhood (Quilmes, Buenos Aires, Argentina)
Male Life History, Reproductive Effort, and the Evolution of the GenusHomo
The effects of race, sex, and nutrition on craniofacial differentiation in rats. A multivariate analysis
Roentgen cephalometric studies on skull development in rats. II. Normal and hypophysectomized males; sex differences
Reduced sexual dimorphism in upper arm muscle circumference associated with protein‐deficient diet in a South American population
| Unique citing works | 5 |
|---|---|
| Citations per year | 0,15 |
| Citation span | 1993 - 2019 (27) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 4 |