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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
Male reproductive aging arises via multifaceted mating-dependent sperm and seminal proteome declines, but is postponable inDrosophila
Irem Sepil,Ben R. Hopkins,Ben R. Hopkins,Rebecca Dean,Eleanor Bath,Solomon Friedman,Ben Swanson,Harrison J. Ostridge,Harrison J. Ostridge,Lucy Harper,Lucy Harper,Norene A. Buehner,Mariana F. Wolfner,Rebecca Konietzny,Marie-Laëtitia Thézénas,Elizabeth Sandham,Philip D. Charles,Roman Fischer,Josefa Steinhauer,Benedikt M. Kessler,Stuart Wigby,Stuart Wigby,Stuart Wigby +22 more
TL;DR: It is demonstrated that seminal fluid deterioration contributes to male reproductive decline via mating-dependent mechanisms that include posttranslational modifications to seminal proteins and altered seminal proteome composition and transfer, and is found that lifespan-extending systemic down-regulation of insulin signaling results in improved late-life ejaculate performance, indicating simultaneous amelioration of both somatic and reproductive aging.
Journal ArticleDOI
Materno-fetal immunotolerance: is Interleukin-1 a fundamental mediator in placental viviparity?
TL;DR: The expression ofIL-1 at the materno-fetal interface in the phylogenetically oldest extant placental vertebrates suggests that IL-1 is a fundamental regulator of materno -fetal relationships.
Journal ArticleDOI
Matrotrophy in the cave molly: an unexpected provisioning strategy in an extreme environment
TL;DR: This study investigates post-fertilization embryo provisioning in a livebearing fish, Poecilia mexicana, from two different habitats that impose different energetic demands and therefore differ in resources available for reproduction and suggests matrotrophy occurs in species interpreted as lecithotrophic using the MI approach.
Journal ArticleDOI
Pro-ejaculatory effect of the aqueous crude extract of cihuapatli (Montanoa tomentosa) in spinal male rats
TL;DR: Present data show that the cihuapatli extract acts directly at the spinal system in charge of the expression of the ejaculatory motor patterns and suggest that the aqueous crude extract exerts its aphrodisiacs properties by increasing sexual potency acting as an oxytocic agent.
Journal ArticleDOI
Cryptic speciation in the recently discovered American cycliophoran Symbion americanus; genetic structure and population expansion
TL;DR: Examination of the population structure and demographics of 169 individuals collected from lobsters over 13 North American localities between October 2003 and January 2006 indicated that the T lineage underwent a recent population expansion, suggesting that the C and T lineages may have speciated in allopatry but a subsequent population expansion may have been responsible for their current sympatric distribution.
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.