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Amotz Zahavi
Amotz Zahavi ( he, אמוץ זהבי) (August 14, 1928 – May 12, 2017) was an Israeli evolutionary biologist, a Professor in the Department of Zoology at Tel Aviv University, and one of the founders of the Society for the Protection of Nature in Israel. His main work concerned the evolution of signals, particularly those signals that are indicative of fitness, and their selection for "honesty". Biography Amotz Zahavi was influenced to study zoology by the director of the zoo at Tel Aviv, Heinrich Mendelssohn. He received his Ph.D. from Tel Aviv University in 1970. He was married to Avishag Zahavi, a biologist and a co-investigator. He died in Tel Aviv, Israel on May 12, 2017, aged 88. Scientific career Zahavi is best known for his work on the handicap principle, which explains the evolution of characteristics, behaviors or structures that appear contrary to the principles of Darwinian evolution in that they appear to reduce fitness and endanger individual organisms. Evolved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petah Tikva
Petah Tikva ( he, פֶּתַח תִּקְוָה, , ), also known as ''Em HaMoshavot'' (), is a city in the Central District (Israel), Central District of Israel, east of Tel Aviv. It was founded in 1878, mainly by Haredi Judaism, Haredi Jews of the Old Yishuv, and became a permanent settlement in 1883 with the financial help of Edmond James de Rothschild, Baron Edmond de Rothschild. In , the city had a population of . Its population density is approximately . Its jurisdiction covers 35,868 dunams (~35.9 km2 or 15 sq mi). Petah Tikva is part of the Tel Aviv Metropolitan Area. Etymology Petah Tikva takes its name (meaning "Door of Hope") from the biblical allusion in Hosea 2:15: "... and make the valley of Achor a door of hope." The Achor Valley, near Jericho, was the original proposed location for the town. The city and its inhabitants are sometimes known by the nickname "Mlabes" after the Arab village preceding the town. (See "Ottoman era" under "History" below.) Hist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Selection
Sexual selection is a mode of natural selection in which members of one biological sex mate choice, choose mates of the other sex to mating, mate with (intersexual selection), and compete with members of the same sex for access to members of the opposite sex (intrasexual selection). These two forms of selection mean that some individuals have greater reproductive success than others within a population, for example because they are more Animal sexual behaviour, attractive or prefer more attractive partners to produce offspring. Successful males benefit from frequent mating and monopolizing access to one or more fertile females. Females can maximise the return on the energy they invest in reproduction by selecting and mating with the best males. The concept was first articulated by Charles Darwin who wrote of a "second agency" other than natural selection, in which competition between mate candidates could lead to speciation. The theory was given a mathematical basis by Ronald F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Israeli Zoologists
Israeli may refer to: * Something of, from, or related to the State of Israel * Israelis, citizens or permanent residents of the State of Israel * Modern Hebrew, a language * ''Israeli'' (newspaper), published from 2006 to 2008 * Guni Israeli (born 1984), Israeli basketball player See also * Israelites The Israelites (; , , ) were a group of Semitic-speaking tribes in the ancient Near East who, during the Iron Age, inhabited a part of Canaan. The earliest recorded evidence of a people by the name of Israel appears in the Merneptah Stele o ..., the ancient people of the Land of Israel * List of Israelis {{disambiguation Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolutionary Biologists
Evolutionary biology is the subfield of biology that studies the evolution, evolutionary processes (natural selection, common descent, speciation) that produced the Biodiversity, diversity of life on Earth. It is also defined as the study of the history of life forms on Earth. Evolution is based on the theory that all species are related and they gradually change over time. In a population, the genetic variations affect the physical characteristics i.e. phenotypes of an organism. These changes in the phenotypes will be an advantage to some organisms, which will then be passed onto their offspring. Some examples of evolution in species over many generations are the Peppered moth, Peppered Moth and Flightless birds. In the 1930s, the discipline of evolutionary biology emerged through what Julian Huxley called the Modern synthesis (20th century), modern synthesis of understanding, from previously unrelated fields of biological research, such as genetics and ecology, systematics, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2017 Deaths
This is a list of deaths of notable people, organised by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked here. 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 See also * Lists of deaths by day The following pages, corresponding to the Gregorian calendar, list the historical events, births, deaths, and holidays and observances of the specified day of the year: Footnotes See also * Leap year * List of calendars * List of non-standard ... * Deaths by year {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1928 Births
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album ''63/19'' by Kool A.D. * ''Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album '' Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by Slipk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Israel Prize Recipients
This is a complete list of recipients of the Israel Prize from the inception of the Prize in 1953 through to 2022. List For each year, the recipients are, in most instances, listed in the order in which they appear on the official Israel Prize website. Note: The table can be sorted chronologically (default), alphabetically or by field utilizing the icon. See also * List of Israeli Nobel laureates References External links * Listat the Jewish Virtual Library Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""Th ... {{DEFAULTSORT:List Of Israel Prize Recipients Israel Prize winners Israel Prize winners de:Israel-Preis#Die Preisträger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Prize (Fyssen Foundation)
The International Prize (French: ''Prix International'') of the Fyssen Foundation is a science award that has been given annually since 1980 to a scientist who has conducted distinguished research in the areas supported by the foundation such as ethology, palaeontology, archaeology, anthropology, psychology, epistemology, logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premise ... and the neurosciences. List of awardees The following persons have received the International Prize: References {{Reflist French science and technology awards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Information Centre Hypothesis
The information centre hypothesis (ICH) is a theory that states bird species live in communal roosts primarily for the advantage of gaining information from others in the community regarding the location of unevenly distributed food resources. This hypothesis was first proposed by Peter Ward and Israeli biologist Amotz Zahavi (1973). They stated that birds join assemblages in order to gain information about food resources and increase foraging efficiency. Using this strategy would allow unsuccessful birds to return to the population and gain information, often by observing behavioural differences in successful birds. Following the exchange of knowledge, the unsuccessful individuals then follow those deemed successful back to the resource location. The hypothesis has been studied and experimentally supported in many different types of communally roosting birds, notably crows and vultures. This strategy is regarded as evolutionarily adaptive, because it would prevent the unsuccessful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Competitive Altruism
Competitive altruism is a possible mechanism for the persistence of cooperative behaviors, specifically those that are performed unconditionally. The theory of reciprocal altruism can be used to explain behaviors that are performed by a donor who receives some sort of benefit in the future. When no such compensation is received, however, reciprocity fails to explain altruistic behavior. Characteristics To explain competitive altruism, RobertsRoberts, G. 1998. Competitive altruism: from reciprocity to the handicap principle. Proc. R. Soc. Lond., B 265: 429-430. uses the example of preening among birds. Because certain birds cannot reach parasites on all parts of their bodies, particularly their necks, they benefit from preening one another. For any given bird, there is an entire flock of potential preeners, who compete in hopes of establishing a beneficial relationship. Cheaters, or those birds that try to be preened without preening others, do not compete and thus are excluded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altruist
Altruism is the principle and moral practice of concern for the welfare and/or happiness of other human beings or animals, resulting in a quality of life both material and spiritual. It is a traditional virtue in many cultures and a core aspect of various religious and secular worldviews. However, the object(s) of concern vary among cultures and religions. In an extreme case, altruism may become a synonym of selflessness, which is the opposite of selfishness. The word "altruism" was popularized (and possibly coined) by the French philosopher Auguste Comte in French, as ''altruisme'', for an antonym of egoism. He derived it from the Italian ''altrui'', which in turn was derived from Latin ''alteri'', meaning " other people" or "somebody else". Altruism in biological observations in field populations of the day organisms is an individual performing an action which is at a cost to themselves (e.g., pleasure and quality of life, time, probability of survival or reproduction), bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
