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Ellen D. Ketterson
Ellen D. Ketterson is an American evolutionary biologist, behavioral ecologist, neuroendocrinologist and ornithologist best known for her experimental approach to the study of life-history trade-offs in a songbird, the Dark-eyed Junco. She is currently a Distinguished Professor of Biology, Director of the Environmental Resilience Institute, and affiliate professor in Cognitive Science, Gender Studies, Integrative Study of Animal Behavior, and Neuroscience at Indiana University. Education and career Ketterson obtained all of her degrees from Indiana University. She earned an A.B. in 1966 and an M.A. in 1968, both in Botany. She received her Ph.D. in 1974 in Zoology. After receiving her doctoral degree, Ketterson was a postdoctoral scholar from 1974 to 1975 at Washington State University working with avian environmental physiologist James R. King. She was an assistant professor at Bowling Green State University from 1975 to 1977 before joining the faculty in the Department ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Ornithological Society
The American Ornithological Society (AOS) is an ornithological organization based in the United States. The society was formed in October 2016 by the merger of the American Ornithologists' Union (AOU) and the Cooper Ornithological Society. Its members are primarily professional ornithologists, although membership is open to anyone with an interest in birds. The society publishes the two scholarly journals, ''The Auk'' and '' The Condor'' as well as the ''AOS Checklist of North American Birds''. In 2013, the American Ornithologists' Union announced a close partnership with the Cooper Ornithological Society, including joint meetings, a centralized publishing office, and a refocusing of their respective journals to increase efficiency of research. In October 2016, the AOU announced that it was ceasing to operate as an independent union and was merging with the Cooper Ornithological Society to create the American Ornithological Society. History The American Ornithologists' Unio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinsey Institute
The Kinsey Institute for Research in Sex, Gender, and Reproduction (often shortened to The Kinsey Institute) is a research institute at Indiana University. Established in Bloomington, Indiana, in 1947 as a nonprofit, the institute merged with Indiana University in 2016, "abolishing the 1947 independent incorporation absolutely and completely." The institute's mission is "To foster and promote a greater understanding of human sexuality and relationships through research, outreach, education, and historical preservation." Research, graduate training, information services, and the collection and preservation of library, art, and archival materials are main activities carried out by The Kinsey Institute. The institute and Alfred Kinsey himself have been the subject of much controversy. As of July 1, 2019, evolutionary biologist and sex researcher Justin Garcia holds the title of executive director of The Kinsey Institute, previously noted as the institute's research director. Garcia i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moulting
In biology, moulting (British English), or molting (American English), also known as sloughing, shedding, or in many invertebrates, ecdysis, is the manner in which an animal routinely casts off a part of its body (often, but not always, an outer layer or covering), either at specific times of the year, or at specific points in its life cycle. In medieval times it was also known as "mewing" (from the French verb "muer", to moult), a term that lives on in the name of Britain's Royal Mews where the King's hawks used to be kept during moulting time before becoming horse stables after Tudor times. Moulting can involve shedding the Epidermis (skin), epidermis (skin), pelage (hair, feathers, fur, wool), or other external layer. In some groups, other body parts may be shed, for example, the entire exoskeleton in arthropods, including the wings in some insects. Examples In birds In birds, moulting is the periodic replacement of feathers by shedding old feathers while producing new o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hormone
A hormone (from the Greek participle , "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs by complex biological processes to regulate physiology and behavior. Hormones are required for the correct development of animals, plants and fungi. Due to the broad definition of a hormone (as a signaling molecule that exerts its effects far from its site of production), numerous kinds of molecules can be classified as hormones. Among the substances that can be considered hormones, are eicosanoids (e.g. prostaglandins and thromboxanes), steroids (e.g. oestrogen and brassinosteroid), amino acid derivatives (e.g. epinephrine and auxin), protein or peptides (e.g. insulin and CLE peptides), and gases (e.g. ethylene and nitric oxide). Hormones are used to communicate between organs and tissues. In vertebrates, hormones are responsible for regulating a variety of physiological processes and behavioral activities such as diges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Immune System
The immune system is a network of biological processes that protects an organism from diseases. It detects and responds to a wide variety of pathogens, from viruses to parasitic worms, as well as cancer cells and objects such as wood splinters, distinguishing them from the organism's own healthy tissue. Many species have two major subsystems of the immune system. The innate immune system provides a preconfigured response to broad groups of situations and stimuli. The adaptive immune system provides a tailored response to each stimulus by learning to recognize molecules it has previously encountered. Both use molecules and cells to perform their functions. Nearly all organisms have some kind of immune system. Bacteria have a rudimentary immune system in the form of enzymes that protect against virus infections. Other basic immune mechanisms evolved in ancient plants and animals and remain in their modern descendants. These mechanisms include phagocytosis, antimicrobial pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mate Choice
Mate choice is one of the primary mechanisms under which evolution can occur. It is characterized by a "selective response by animals to particular stimuli" which can be observed as behavior.Bateson, Paul Patrick Gordon. "Mate Choice." Mate Choice, Cambridge University Press, 1985 In other words, before an animal engages with a potential mate, they first evaluate various aspects of that mate which are indicative of quality—such as the resources or phenotypes they have—and evaluate whether or not those particular Phenotypic trait, trait(s) are somehow beneficial to them. The evaluation will then incur a response of some sort. These mechanisms are a part of evolutionary change because they operate in a way that causes the qualities that are desired in a mate to be more frequently passed on to each generation over time. For example, if female peacocks desire mates who have a colourful plumage, then this trait will increase in frequency over time as male peacocks with a colourful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Life History Theory
Life history theory is an analytical frameworkVitzthum, V. (2008). Evolutionary models of women's reproductive functioning. ''Annual Review of Anthropology'', ''37'', 53-73 designed to study the diversity of life history strategies used by different organisms throughout the world, as well as the causes and results of the variation in their life cycles.Flatt, T., & Heyland, A. (Eds.). (2011). Mechanisms of Life History Evolution : The Genetics and Physiology of Life History Traits and Trade-Offs. Oxford, GB: OUP Oxford. It is a theory of biological evolution that seeks to explain aspects of organisms' anatomy and behavior by reference to the way that their life histories—including their reproductive development and behaviors, post-reproductive behaviors, and lifespan (length of time alive)—have been shaped by natural selection. A life history strategy is the "age- and stage-specific patterns" and timing of events that make up an organism's life, such as birth, weaning, maturation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Testosterone
Testosterone is the primary sex hormone and anabolic steroid in males. In humans, testosterone plays a key role in the development of Male reproductive system, male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of androgenic hair, body hair. In addition, testosterone in both sexes is involved in health and well-being, including moods, behaviour, and in the prevention of osteoporosis. Insufficient levels of testosterone in men may lead to abnormalities including frailty and bone loss. Testosterone is a steroid from the androstane class containing a ketone and a hydroxyl group at positions three and seventeen respectively. It is Biosynthesis, biosynthesized in several steps from cholesterol and is converted in the liver to inactive metabolites. It exerts its action through binding to and activation of the androgen receptor. In humans and most other vertebrates, testost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Lake (Virginia)
Mountain Lake is a freshwater lake located in Giles County, Virginia, Giles County near Newport, Giles County, Virginia, Newport, Virginia in the United States. Along with Lake Drummond in the Great Dismal Swamp, it is one of only two natural lakes in Virginia. It was originally known as Salt Pond, as it was where cattle were given salt. The area is within the ''Mountain Lake Wilderness Cluster''. The Lake Mountain Lake typically covers about , and its level was largely constant at an elevation of during the 19th and 20th centuries. The first known written evidence of the lake was by Christopher Gist of the Ohio Land Surveying Company, in 1751. It subsequently became known as Salt Pond.Parker, B.C., 2003. ''A review of research studies at Mountain Lake, Virginia.'' ''Banisteria'', 22, pp.1-21. Natural lakes are common well to the north, where the Appalachian Range was subject to geologically recent glacial activity. But the basis on which this lake—the only natural one in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cooper Ornithological Society
The Cooper Ornithological Society (COS), formerly the Cooper Ornithological Club, was an American ornithological society. It was founded in 1893 in California and operated until 2016. Its name commemorated James Graham Cooper, an early California biologist. It published the ornithological journal '' The Condor'' and the monograph series ''Studies in Avian Biology'' (formerly ''Pacific Coast Avifauna''). It presented the annual Loye and Alden Miller Research Award, which is given for lifetime achievement in ornithological research and was a member of the Ornithological Council. The aims of the Cooper Ornithological Society were the scientific study of birds, the dissemination of ornithological knowledge, the encouragement and spread of interest in the study of birds, and the conservation of birds and wildlife in general. In October 2016 the Cooper Ornithological Society merged with the American Ornithologists' Union to form the American Ornithological Society, based in Chicago, Illi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Val Nolan, Jr
Val may refer to: Val-a Film * ''Val'' (film), an American documentary about Val Kilmer, directed by Leo Scott and Ting Poo Military equipment * Aichi D3A, a Japanese World War II dive bomber codenamed "Val" by the Allies * AS Val, a Soviet assault rifle Music *''Val'', album by Val Doonican *VAL (band), Belarusian pop duo People * Val (given name), a unisex given name * Rafael Merry del Val (1865–1930), Spanish Catholic cardinal * Val (sculptor) (1967–2016), French sculptor * Val (footballer, born 1983), Lucivaldo Lázaro de Abreu, Brazilian football midfielder * Val (footballer, born 1997), Valdemir de Oliveira Soares, Brazilian football defensive midfielder Places * Val (Rychnov nad Kněžnou District), a village and municipality in the Czech Republic * Val (Tábor District), a village and municipality in the Czech Republic * Vál, a village in Hungary * Val, Iran, a village in Kurdistan Province, Iran * Val, Italy, a ''frazione'' in Cortina d'Ampezzo, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaret Morse Nice Medal
The Margaret Morse Nice Medal is an ornithological award made annually by the Wilson Ornithological Society (WOS). It was established in 1997 and named in honour of ornithologist Margaret Morse Nice (1883-1974). The medal recipient is expected to give the plenary lecture at the WOS annual general meeting. Recipients SourceWilson Ornithological Society* 1997 – Elsie Collias and Nick Collias (University of California, Los Angeles), "''Seeking to understand the living bird''" * 1998 – Ellen Ketterson and Val Nolan (Indiana University), "''Studying birds: one species at a time''" * 1999 – Frances C. James * 2000 – Susan M. Smith * 2001 – Glen E. Woolfenden * 2002 – Richard T. Holmes * 2003 – Robert E. Ricklefs * 2004 – Stephen T. Emlen * 2005 – Bridget J. M. Stutchbury and Eugene S. Morton * 2006 – Gary Stiles * 2007 – Patricia L. Schwagmeyer and Douglas Mock * 2008 – Jerome Jackson * 2009 – Sidney A. Gauthreaux (Clemson University), "''Bird movements ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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