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Encyclopedia of reproduction
Ernst Knobil,J. D. Neill +1 more
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The article was published on 1998-01-01 and is currently open access. It has received 702 citations till now.read more
Citations
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Journal ArticleDOI
11-Oxygenated androgens in female teleosts: prevalence, abundance, and life history implications.
P. Mark Lokman,Bernadette Harris,Makoto Kusakabe,David E. Kime,Rüdiger W. Schulz,Shinji Adachi,Graham Young +6 more
TL;DR: It is concluded that 11-oxygenated androgens are quantitatively minor steroids in most female fish, and there was no convincing evidence to support the notion that the presence of 11- oxygengenate androgens in blood is an adaptation specific to migratory fishes.
Journal ArticleDOI
A review of immune transfer by the placenta
Thais Martins Chucri,Jsc Monteiro,Ana Rita de Lima,Maria Letícia Baptista Salvadori,J. R. Kfoury Júnior,Maria Angélica Miglino +5 more
TL;DR: There are no appreciable qualitative differences between the two mechanisms of transfer (placenta and colostrum) and that immune protection in the neonate can be attained by either mechanism.
Journal ArticleDOI
Integration of steroid hormone initiated membrane action to genomic function in the brain.
TL;DR: It is demonstrated that rapid actions of estrogen potentiate the slower transcriptional response from an ERE-reporter in neuroblastoma cells, using a novel two-pulse paradigm in which the first pulse rapidly initiates non-genomic actions using a membrane-limited estrogen conjugate (E-BSA), while the second pulse promotes genomic transcription from a consensus estrogen response element (ERE).
Journal ArticleDOI
Patterns of urinary and fecal steroid excretion during the ovarian cycle and pregnancy in the African elephant (Loxodonta africana).
Fiess M,Heistermann M,Hodges Jk +2 more
TL;DR: Fecal and urinary 5-reduced progestins increased gradually during early pregnancy to maximum values around week 40-45 and urinary estrogens did not show any cyclic pattern during the preconception period and levels remained low during the first 30 weeks of gestation.
Journal ArticleDOI
Coexistence of genotypic and temperature-dependent sex determination in pejerrey Odontesthes bonariensis.
TL;DR: It is hypothesized that amhy is important for testicular differentiation in pejerrey, at least at intermediate temperatures, and the first clear genomic evidence that genotypic and environmental sex determinants can coexist in species with marked TSD such as the pejerreys is found.
References
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Book ChapterDOI
Seasonal breeding:nature's contraceptive.
G A Lincoln,Roger V. Short +1 more
TL;DR: The seasonal cycle highlights the seasonal changes in daylight length, rutting behavior, testicular diameter, sexual skin flush, and concentrations of plasma follicle-stimulating hormone, prolactin, and testosterone in a group of rams throughout the year.
Journal ArticleDOI
The physiological responses of anovulatory ewes to the introduction of rams: a review.
TL;DR: Ewes of many breeds can be stimulated to ovulate by the reintroduction of rams and appear to be effected both through a delay in the onset of the LH surge and through a direct action of progesterone on the ovary.
Journal ArticleDOI
Factors affecting the secretion of luteinizing hormone in the ewe.
TL;DR: LH is secreted as discrete pulses throughout all stages of the reproductive cycle of the ewe, including pre‐pubertal, seasonal and lactational anoestrus, and the luteal and follicular phases of the oestrous cycle.
Nutritional influences on reproduction in mature male sheep and goats
TL;DR: In this article, it was shown that nutritional signals exert powerful effects on the reproductive system of mature male ruminants, and the responses are partly independent of changes in gonadotrophin secretion.
Journal Article
Nutritional influences on reproduction in mature male sheep and goats.
TL;DR: In this article, it was shown that nutritional signals exert powerful effects on the reproductive system of mature male ruminants, and the responses are partly independent of changes in gonadotrophin secretion.