• In this process, it involves a series of complex physiological processes, such as the development of germ cells, maturation and the combination of male and female germ cells, embryonic development, implantation, pregnancy establishment and maintenance. (frontiersin.org)
  • The role of inflammation in this process has been reported, including ovulation, pregnancy and other important reproductive processes. (frontiersin.org)
  • The mechanisms of reproductive isolation are a collection of evolutionary mechanisms, behaviors and physiological processes critical for speciation. (wikipedia.org)
  • Many of the reproductive processes in swamp buffalo appear to be poorly studied and sparsely described. (ivis.org)
  • This transition precedes flowering, and is characterized by changes in shoot architecture and patterns of cellular differentiation, by an increase in reproductive competence, and by changes in a variety of physiological processes. (upenn.edu)
  • When this exceeds a certain threshold, the physiological processes associated with the sound production are restricted, and some calls are even actually inhibited. (wattsupwiththat.com)
  • but when sensation occurs alone, or with a minimum of perception, the accompanying reproductive processes are at a minimum too. (psychcentral.com)
  • such a lack of flexibility, however, would inevitably cause migrant populations to suffer catastrophes because ecological conditions are irregular-meteorological events, such as the arrival of spring, and biological phenomena, such as flowering, foliation, hatching of insects, and availability of food, are highly variable from year to year. (britannica.com)
  • Termites, a major group of social insects, exhibit many interesting phenomena related to social physiology, such as mechanisms of caste regulation in a colony. (frontiersin.org)
  • Most of physiological studies focus on the mechanisms in an individual or part(s) of an individual (e.g. (frontiersin.org)
  • This striking difference between the two groups can be at least partly explained by sperm competition mechanisms depending on sperm size relative to the size of the female reproductive tract: in large animals (passerines), sperm numbers are advantageous in sperm competition owing to dilution inside the female tract, whereas in small animals (drosophilids), large sperm are advantageous for physical competition (sperm displacement). (pnas.org)
  • The mechanisms of reproductive isolation have been classified in a number of ways. (wikipedia.org)
  • Zoologist Ernst Mayr classified the mechanisms of reproductive isolation in two broad categories: pre-zygotic for those that act before fertilization (or before mating in the case of animals) and post-zygotic for those that act after it. (wikipedia.org)
  • These mechanisms include physiological or systemic barriers to fertilization. (wikipedia.org)
  • This thesis describes research into the molecular mechanisms underlying age-related behavioral and physiological plasticity in worker honey bees. (illinois.edu)
  • Evolutionary analysis states that both men and women are said to have dissimilar physiological mechanisms underlying both sexual motivation and sexual, reproductive behaviours. (wikiversity.org)
  • The model will provide a basis for future studies aiming to elucidate the physiological mechanisms underlying the dynamic properties (changing shapes) of vascular flow waveforms that are observed with advancing gestation. (springer.com)
  • At times, these changes in behavior and physiology are stable for long periods, a phenomenon known as phenotypic plasticity [1]. (illinois.edu)
  • Mechanistic understanding of these phenomena requires animal models to study the effects of nutrient availability on developmental physiology. (genetics.org)
  • There is a serious need for sexual education and awareness regarding reproductive physiology, so that a woman can easily come forward and share her usual and unusual experiences from the very first day of her menstrual life (menarche). (youthkiawaaz.com)
  • The identified differences and relationships in mRNA expression, plasma T3 and metabolites, and testis size in male ETSs contribute to our understanding how free-living birds adjust their molecular, endocrinal, and biochemical features to orchestrate their reproductive physiology and metabolism for the maintenance of well-developed testes. (bvsalud.org)
  • The reproductive activity of swamp buffalo, as in other mammals, begins with puberty, a complex physiological phenomenon which marks the maturation of the hypothalamus-pituitary -ovarian neuroendocrine axis. (ivis.org)
  • The first reports of synthetic compounds that could interfere with the normal physiological functioning of the endocrine system in mammals, amphibians and reptiles was made in 1958. (sun.ac.za)
  • Scientists have also linked photoperiodism with reproductive cycles of some mammals and birds. (smokymountainnews.com)
  • However, the presence of such cells in the majority of female mammals is controversial, and the idea of a fixed ovarian reserve determined at birth is the prevailing belief among reproductive biologists. (biomedcentral.com)
  • Although female GSCs (fGSCs) appear to have a role in oogenesis throughout reproductive life in some non-mammalian species, these examples appear to be relatively rare across the phyla of the animal kingdom [ 4 ], and the presence of fGSCs in mammals has been greatly debated. (biomedcentral.com)
  • This review paper has concentrated on the study of water limitation and its effects on morphological, physiological, biochemical, and molecular responses of wheat with the possible losses caused by drought stress. (hindawi.com)
  • One of the principal forces driving the evolution of morphological, behavioural and physiological traits is sexual selection. (royalsocietypublishing.org)
  • In our study, we hypothesized and tested the differences in physiological (including heamatological and immunological), growth-related, condition-related, and fitness-related traits between gynogenetic females and sexuals. (biomedcentral.com)
  • This mantling phenomenon poses a threat to oil palm planters and can further jeopardize the economic growth of countries that depend particularly on oil palm plantation. (hindawi.com)
  • Profitability of sheep production depends on the reproductive response of ewes and growth of their lambs, which can be improved through the ram genotype. (bvsalud.org)
  • The aim of this study was to evaluate the reproductive response of Blackbelly (Bb), Pelibuey (Pb), Katahdin (Kat) and Dorper (Dor) ewes crossed with Damara (Dam) and Dor rams and the growth of their offspring. (bvsalud.org)
  • My advisor once joked that anthropology is a rather navel-gazing discipline, but reproductive ecology, our subfield, is gonad-gazing. (scientificamerican.com)
  • Investigation of the active compounds in the shrub showed that the plant had contraceptive properties and the ability to interact with the normal physiological balance of the steroid hormone, cortisol, which is responsible for mammalian stress responses as described above. (sun.ac.za)
  • Alternatively, they may be benign under normal physiological conditions. (biomedcentral.com)
  • Variations in metabolism and related phenomena are controlled by an endocrine gland, namely the pituitary gland , which is located in the lower part of the brain and acts as a command post, sending out instructions in the form of secretions called hormones . (britannica.com)
  • Numerous physiological, endocrine, cellular and molecular changes have been observed with age in humans [ 0975 ]. (senescence.info)
  • Polycystic ovary syndrome (PCOS) is the commonest endocrine disorder in women of reproductive age. (bmj.com)
  • The physiological effects of these compounds, later collectively named endocrine disrupting compounds (EDC's), were observed in lakes, rivers and surface waters in Northern America and subsequently in Europe. (sun.ac.za)
  • This study compared reproductive organs volumes and structural characteristics in children at age 5 y who were enrolled in the Beginnings study long-term cohort. (nih.gov)
  • In this cohort, no early infant feeding effects were found on reproductive organs volumes and structural characteristics in children age 5 y. (nih.gov)
  • Research with dark-eyed juncos and white-throated sparrows have provided similar results, i.e., day length appears to influence the development of reproductive organs. (smokymountainnews.com)
  • An insufficient or imbalanced nutrient intake might lead to the malfunction of organs, causing reproductive failure. (scirp.org)
  • To achieve adaptive social behavior in fluctuating environmental conditions, in addition to coordination of physiological status in each individual, the whole colony is coordinated by interactions among colony members. (frontiersin.org)
  • The different mating rituals of animal species creates extremely powerful reproductive barriers, termed sexual or behavior isolation, that isolate apparently similar species in the majority of the groups of the animal kingdom. (wikipedia.org)
  • Mating dances, the songs of males to attract females or the mutual grooming of pairs, are all examples of typical courtship behavior that allows both recognition and reproductive isolation. (wikipedia.org)
  • But this Web site didn't delve into any physiological phenomenon associated with the behavior. (smokymountainnews.com)
  • Researchers at the University of Massachusetts Amherst have identified a single-measure biomarker in sperm mitochondrial DNA that may predict male reproductive health and pregnancy success. (news-medical.net)
  • Adds Whitcomb, 'Mitochondrial DNA in sperm seems to reflect some underlying physiological phenomenon that affects sperm function. (news-medical.net)
  • In many insects, males transfer their sperm in spermatophores, biochemically diverse packages that have been shown to influence male reproductive success [ 19 - 23 ]. (royalsocietypublishing.org)
  • This physiological character of dogs is thought to happen in order to allow for the complete ejaculation of sperm into the reproductive tract of the female. (dog-health-guide.org)
  • An example of reproductive isolation due to differences in the mating season are found in the toad species Bufo americanus and Bufo fowleri. (wikipedia.org)
  • Does a barrier arise suddenly in an all-or-none fashion, or does it arise slowly, so that reproductive isolation is initially only partial? (queensu.ca)
  • For example, multilocus mapping approaches hold the promise of identifying the specific genetic changes that underlie ecological adaptation and reproductive isolation. (bioone.org)
  • Although this hypothesis remains controversial, the involvement of imprinted genes in placentation suggests a role in reproductive isolation. (bioone.org)
  • Our study indicates that a similar amount of energy is invested by both gynogenetic and sexual females of C. auratus complex in reproductive behaviour. (biomedcentral.com)
  • The sounds of amphibians are altered by the increase in ambient temperature, a phenomenon that, in addition to interfering with reproductive behaviour, serves as an indicator of global warming. (wattsupwiththat.com)
  • We found no effect of courtship signal attractiveness or pericopulatory behaviour on male reproductive success. (royalsocietypublishing.org)
  • For ovary as part of plants see ovary (plants) An ovary is an egg-producing reproductive organ found in female organisms. (statemaster.com)
  • Critically, the physiological role of these cells in vivo in the adult mammalian ovary has yet to be determined. (biomedcentral.com)
  • There is no relation between the reproductive and migratory stimuli, yet the two phenomena, although independent, are nevertheless stimulated by the same factor. (britannica.com)
  • While the Schacter-Singer theory states that human sexual motivation is based on the connection between cognitive interpretations of stimuli and physiological arousal, much research states trying to simplify the complexity of sexual motivation in humans can be limiting when trying to develop a true understanding of the nature of sexual desire and its implications on both males and females. (wikiversity.org)
  • Urinary Tract Physiological Phenomena" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (harvard.edu)
  • This graph shows the total number of publications written about "Urinary Tract Physiological Phenomena" by people in Harvard Catalyst Profiles by year, and whether "Urinary Tract Physiological Phenomena" was a major or minor topic of these publication. (harvard.edu)
  • Below are the most recent publications written about "Urinary Tract Physiological Phenomena" by people in Profiles. (harvard.edu)
  • 4.3 Objective: To explain how changes in plasma profiles of reproductive hormones correlate with changes in ovarian follicular development and reproductive tract structure and function. (uc.edu)
  • 4.3.3 Reproductive Tract Cycle (Animation) -How do the thickness, vascularity and secretory activity of the endometrium change throughout the menstrual cycle? (uc.edu)
  • The intro-mission continues with thrusting and the female might experience discomfort, particularly in cases where she is under age or is experiencing any health problem in the reproductive tract. (dog-health-guide.org)
  • Complications from injuries on and in the reproductive tract, high blood loss, self injury due to discomfort and secondary infections are common due to a stuck dog knot. (dog-health-guide.org)
  • Dog knot stuck usually occurs due to anatomical defects in the reproductive tract of either male, female or both dogs. (dog-health-guide.org)
  • This evolutionary phenomenon was first described by Darwin [ 1 ], who originally conceived this as a selective force that arises from differential mating success owing to intrasexual competition or intersexual choice. (royalsocietypublishing.org)
  • The problem has been examined by some of the most distinguished of evolutionary theorists, but they have either failed to find any reproductive advantage in sexual reproduction, or have merely showed the formal possibility of weak advantages that would probably not be adequate to balance even modest recombinational load. (apologeticspress.org)
  • The impossibility of sex being an immediate reproductive adaptation in higher organisms would seem to be as firmly established a conclusion as can be found in current evolutionary thought. (apologeticspress.org)
  • Understanding such variation is of major importance because it is frequently related to differences in reproductive success, susceptibility to disease and quality of life [ 4 ]. (royalsocietypublishing.org)
  • At least one author [ 8 ] has argued that the phenomenon of chronic energy deficiency is very real and manifested by a spectrum of reproductive hormone abnormalities that range from the less severe ovarian dysfunctions of follicular/luteal suppression and anovulation to the more severe amenorrhea. (biomedcentral.com)
  • It is also the first model capable of capturing wave propagation phenomena in the utero-ovarian circulation, which are important for the accurate estimation of arterial stiffness in contemporary obstetric practice. (springer.com)
  • In postpartum dairy cows, pathologic ovarian phenomena including ovulatory (cystic corpora lutea) and non-ovulatory (follicular and luteal cysts) forms frequently occur causing decreased fertility. (scirp.org)
  • Even in the process of pregnancy establishment, immune system disorders can also lead to pregnancy failure and other phenomena. (frontiersin.org)
  • Finally, pregnancy is the only known physiological phenomenon where the once named "suppressor T cells," re-emerge as "regulatory T cells", and play a cardinal role. (eurekaselect.com)
  • The human cardiovascular system undergoes significant physiological and structural adaptations during healthy pregnancy. (springer.com)
  • Factors such as management and husbandry, nutrition and reproductive diseases determine reproductive performance (number of open days, calving interval, number of AI per pregnancy, pregnancy rate, and early/late embryonic loss). (scirp.org)
  • Since the transition period involves the most important physiological changes of the time around calving, it is a favorable target for reproduction and nutrition physiologists. (scirp.org)
  • Reproduction refers to the physiological process in which organisms produce offspring for the continuation of races, that is, the process in which organisms produce new individuals. (frontiersin.org)
  • Inflammation not only exists in the physiological process of reproduction, but also has been considered as a potential important factor affecting reproduction in a pathological process. (frontiersin.org)
  • Reproduction in the swamp buffalo appears to be similar to the river buffalo with delayed puberty, poor estrus expression, prolonged calving intervals and seasonal breeding limiting the reproductive performance. (ivis.org)
  • We suggest that lower aerobic performance in gynogens may represent their physiological disadvantage balancing the cost of sexual reproduction. (biomedcentral.com)
  • Reproduction is an energetically costly phenomenon. (bvsalud.org)
  • 1 Department of Pediatrics, 2 Biomedical Sciences Program, 3 Center for Reproductive Sciences and the Department of Obstetrics, Gynecology and Reproductive Sciences, 4 Eli and Edythe Broad Center for Regeneration Medicine and Stem Cell Research, 5 Program in Microbial Pathogenesis and Host Defense, 6 Department of Anatomy, and 7 Human Embryonic Stem Cell Program, University of California, San Francisco. (jci.org)
  • Address correspondence to: Emin Maltepe, Departments of Pediatrics and Biomedical Sciences, Eli and Edythe Broad Center for Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences, University of California, San Francisco, 513 Parnassus Ave. HSE-1401, Box 1346, San Francisco, CA 94143-1346. (jci.org)
  • Scavengers, such as GSH, can be used to treat these cases as they can restore the physiological constitution of PUFA in the cell membrane. (bioscience.org)
  • They collaborated with reproductive and perinatal epidemiologist Germaine Buck Louis, dean of the College of Health and Human Services at George Mason University, and Sunni Mumford and Enrique Schisterman at the National Institute of Child Health & Human Development. (news-medical.net)
  • The item Ethics in reproductive and perinatal medicine : a new framework represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Manitoba Libraries . (umanitoba.ca)
  • Subclinical hypothyroidism is usually identified as a condition that decreases the reproductive capacity of women and isassociated with a higher risk of perinatal complications. (bvsalud.org)
  • cerning the nature and mechanism of the menstrual phenomenon during the past fifteen or twenty years than during many centuries preceding. (ebooksread.com)
  • Let us make a short summary of the different menstrual pathologies commonly occurring during the reproductive life of a woman. (youthkiawaaz.com)
  • GOAL: To describe the coordinated changes in the components of the female reproductive system throughout the menstrual cycle and identify the causes and effects of menopause. (uc.edu)
  • Plants' vegetative and reproductive stages are intensively influenced by drought stress. (hindawi.com)
  • Even though somaclonal variation is often reported as a result of tissue culture propagation, the occurrence of somaclonal variation may not be unique to in vitropropagation as it can happen naturally in somatic and reproductive tissues in plants [ 6 ], possibly triggered by genomic shock or plasticity. (hindawi.com)
  • This happens when the plants have exhausted its usual physiological responses to environmental stress [ 7 ]. (hindawi.com)
  • A portal of ageing changes covering different biological levels, integrating molecular, physiological and pathological age-related data. (senescence.info)
  • At the core of the debate is whether age-related hypogonadism is, as Peter Snyder, MD , questioned a "physiological phenomenon" and possibly even an adaptive one, "or a pathological problem. (medpagetoday.com)
  • Dog knot stuck is unusual but is related to any existing pathological conditions (health problems) and any abnormalities in parts of the canine reproductive system. (dog-health-guide.org)
  • We also measured pericopulatory behaviours to examine their influence on male reproductive success. (royalsocietypublishing.org)
  • In lower animals, sexual motivation is seen as a 'drive' or internal force that causes the animal to engage in reproductive behaviours. (wikiversity.org)
  • The current study aims to evaluate the involvement of histone deacetylase (HDAC) in the mantling phenomenon and hence brings us one step closer to producing an excellent detection marker at early vegetative stage of the seedling in the future. (hindawi.com)
  • As such it will be of interest not only to fundamental and reproductive immunologists, but more importantly, clinicians in obstetrics and gynecology. (eurekaselect.com)
  • Meet species that exemplify all the realms of aging: longevity, reproductive health, social status, wisdom, and finally, everything that surrounds the final chapter of life, death. (cbc.ca)
  • We explore the physiological secrets linked to life expectancy, longevity, and senescence in various animal species. (cbc.ca)
  • Compared with feeding infants breast milk or cow-milk formula, soy formula feeding does not affect subsequent reproductive organ size at 5 years of. (nih.gov)
  • Succinctly, we humans age gradually and exhibit reproductive senescence. (senescence.info)
  • The importance of the topic relies not only on "the riddle of the fetal allograft", which is per se fascinating, but on its consequences, linked to the development of IVF and in general, Assisted Reproductive Technologies (ART) / Medicine. (eurekaselect.com)
  • Literature reports suggest that phytochemicals, such as isoflavones found in soybeans, impair reproductive function in animals and raise the possibility that consuming soy infant formula could alter hormonally sensitive organ development in children. (nih.gov)
  • Frosts cause substantial agricultural yield losses, particularly if a freezing event occurs during reproductive development. (plantcell.org)
  • The protective effects of selenium-enriched spirulina on the reproductive system of male zebrafish (Danio rerio) exposed to beta-cypermethrin. (bioportfolio.com)
  • Vitamin D receptors are widely distributed in the male and female reproductive system. (bioportfolio.com)
  • Mandi M, Khatun S, Rajak P, Mazumdar A, Roy S. Potential risk of organophosphate exposure in male reproductive system of a non-target insect model Drosophila melanogaster. (viictr.org)
  • In fact, the beginning, duration and intensity of calls from the male to the female are changed, which influences reproductive activity. (wattsupwiththat.com)
  • Fireflies (Coleoptera: Lampyridae) are an especially interesting group for investigating how male traits influence reproductive success across distinct selection episodes. (royalsocietypublishing.org)
  • Specifically, in the case of abortive mantling phenomenon, no pollen is produced by the male inflorescences, and as for female inflorescences, a ring of supplementary carpels is produced surrounding the gynoecium, which in turn prevents the mantled oil palm fruits from ripening [ 5 ]. (hindawi.com)
  • Or maybe it's some kind of reproductive twinge massaged by day length that just makes the male grouse randy again for a few days in autumn. (smokymountainnews.com)
  • [1] Girls attain adult height and reproductive maturity about 4 years after the first physical changes of puberty appear. (statemaster.com)
  • The follow-up of these children through puberty is planned and should help delineate potential early infant feeding effect on reproductive function later in life. (nih.gov)
  • In this chapter we present the reproductive activity and assisted reproductive technology in swamp buffalo with the emphasis on the specific features of this species as a traditional breeder, which is capable of adapting to a harsh environment with minimal managerial input. (ivis.org)
  • But prolonged food deprivation can also lead to much longer-term effects, causing individuals to enter extended periods of inactivity, alter their reproductive strategy, or lose their position in a dominance hierarchy. (illinois.edu)
  • This paper described the total protein polymorphism profiles of somaclonal variants of oil palm and the effects of histone deacetylation on this phenomenon. (hindawi.com)
  • Dr. Margareta D. Pisarska, co-director of the Center for Fertility and Reproductive Medicine at Cedars-Sinai Medical Center in Los Angeles, told WebMD that "it's becoming more and more important, in terms of what studies we do, to focus our efforts on the physiological effects of stress and how they may play a role in conception . (nationalreview.com)
  • Reproductive effects in laboratory animals are considered. (cdc.gov)