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Sexual Mimicry
Sexual mimicry occurs when one sex mimics the opposite sex in its behavior, appearance, or chemical signalling. It is more commonly seen within invertebrate species, although sexual mimicry is also seen among vertebrates such as spotted hyenas. Sexual mimicry is commonly used as a mating strategy to gain access to a mate, a defense mechanism to avoid more dominant individuals, or a survival strategy. It can also be a physical characteristic that establishes an individual's place in society. Sexual mimicry is employed differently across species and it is part of their strategy for survival and reproduction. Examples of sexual mimicry in animals include the spotted hyena, certain types of fish, passerine birds and some species of insect among others. These are cases of intraspecific sexual mimicry, but interspecific sexual mimicry can also occur in some plant species, especially orchids. In plants employing sexual mimicry, flowers mimic mating signals of their pollinator insects. These ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominance (ethology)
In biology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social groups interact, creating a ranking system. A dominant higher-ranking individual is sometimes called an alpha, and the submissive lower-ranking individual a beta. Different types of interactions can result in dominance depending on the species, including ritualized displays of aggression or direct physical violence. In social living groups, members are likely to compete for access to limited resources and mating opportunities. Rather than fighting each time they meet, relative rank is established between individuals of the same sex, with higher-ranking individuals often gaining more access to resources and mates. Based on repetitive interactions, a social order is created that is subject to change each time a dominant animal is challenged by a subordinate one. Definitions Dominance is an individual's preferential access ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Territory (animal)
In ethology, territory is the sociographical area that an animal consistently defends against conspecific competition (or, occasionally, against animals of other species) using agonistic behaviors or (less commonly) real physical aggression. Animals that actively defend territories in this way are referred to as being territorial or displaying territorialism. Territoriality is only shown by a minority of species. More commonly, an individual or a group of animals occupies an area that it habitually uses but does not necessarily defend; this is called its home range. The home ranges of different groups of animals often overlap, and in these overlap areas the groups tend to avoid each other rather than seeking to confront and expel each other. Within the home range there may be a ''core area'' that no other individual group uses, but, again, this is as a result of avoidance. Function The ultimate function of animals inhabiting and defending a territory is to increase the indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadley's Flat Lizard
''Platysaurus broadleyi'', also known Common name, commonly as the Augrabies flat lizard and Broadley's flat lizard, is a species of lizard in the Family (biology), family Cordylidae. The species is Endemism, endemic to South Africa.Richard Allen "Bo" Crombet-Beolens, Beolens B, Michael Watkins (zoologist), Watkins M, Michael Grayson, Grayson M (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (''Platysaurus broadleyi'', p. 39). Etymology Both the Specific name (zoology), specific name, ''broadleyi'', and one of the common names, Broadley's flat lizard, are in honor of African Herpetology, herpetologist Donald George Broadley. Geographic range The Augrabies flat lizard has its geographic range between Augrabies Falls and Pella, Northern Cape in South Africa. This area includes the lower Orange River, Northern Cape Province, and Gordonia District. Habitat The preferred natural habitat of ''P. broadleyi'' is rocky areas in b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honest Signalling
Within evolutionary biology, signalling theory is a body of theoretical work examining communication between individuals, both within species and across species. The central question is when organisms with conflicting interests, such as in sexual selection, should be expected to provide honest signals (no presumption being made of conscious intention) rather than cheating. Mathematical models describe how signalling can contribute to an evolutionarily stable strategy. Signals are given in contexts such as mate selection by females, which subjects the advertising males' signals to selective pressure. Signals thus evolve because they modify the behaviour of the receiver to benefit the signaller. Signals may be honest, conveying information which usefully increases the fitness of the receiver, or dishonest. An individual can cheat by giving a dishonest signal, which might briefly benefit that signaller, at the risk of undermining the signalling system for the whole population. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platysaurus Broadleyi01
''Platysaurus'' is a genus of lizards, commonly known as flat lizards for their flat backs, in the family Cordylidae. Geographic range All species in the genus ''Platysaurus'' live in isolated populations in southern Africa. They are found in Mozambique, Zimbabwe, eastern Botswana, southern Namibia and northern and western South Africa. Description The species of ''Platysaurus'' exhibit sexual dimorphism. Females and juveniles often have black or brown backs with white stripes, while males are much more colored. Also, males are somewhat larger than females. Species The described species are: The Reptile Database. *'' Platysaurus attenboroughi'' – Attenborough's flat lizard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution (journal)
''Evolution: International Journal of Organic Evolution'', is a monthly scientific journal that publishes significant new results of empirical or theoretical investigations concerning facts, processes, mechanics, or concepts of evolutionary phenomena and events. ''Evolution'' is published by the Society for the Study of Evolution. Its current editor-in-chief is Tracey Chapman. Former editors-in-chief The journal was founded soon after the Second World War. Its first editor was the evolutionary geneticist Ernst Mayr. * Ruth Geyer Shaw, July 2013 – 2017 * Daphne Fairbairn Daphne (; ; el, Δάφνη, , ), a minor figure in Greek mythology, is a naiad, a variety of female nymph associated with fountains, wells, springs, streams, brooks and other bodies of freshwater. There are several versions of the myth in whi ..., 2010- June 2013 References External linksOfficial website Evolutionary biology journals Publications established in 1947 Academic journals published by l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The American Naturalist
''The American Naturalist'' is the monthly peer-reviewed scientific journal of the American Society of Naturalists, whose purpose is "to advance and to diffuse knowledge of organic evolution and other broad biological principles so as to enhance the conceptual unification of the biological sciences." It was established in 1867 and is published by the University of Chicago Press. The journal covers research in ecology, evolutionary biology, population, and integrative biology. , the editor-in-chief is Daniel I. Bolnick. According to the ''Journal Citation Reports'', the journal had a 2020 impact factor of 3.926. History The journal was founded by Alpheus Hyatt, Edward S. Morse, Alpheus S. Packard Jr., and Frederick W. Putnam at the Essex Institute in Salem, Massachusetts. The first issue appeared in print dated March 1867."American Naturalist," in International Magazine Co., ''Periodicals,'' vol. 1, no. 1 (October-December 1917), pg. 5. In 1878 the journal was for sale and Ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ficedula Hypoleuca Sussex 8
The ''Ficedula'' flycatchers are a genus of Old World flycatchers. The genus is the largest in the family, containing around thirty species. They have sometimes been included in the genus ''Muscicapa''. The genus is found in Europe, Asia and Africa. Several species are highly migratory, whereas other species are sedentary. Taxonomy and systematics The genus was introduced by the French naturalist Mathurin Jacques Brisson in 1760 with the European pied flycatcher (''Ficedula hypoleuca'') as the type species. The genus name is from Latin and refers to a small fig-eating bird (''ficus'', "fig") supposed to change into the blackcap in winter. Extant species The genus contains the following species: * Rusty-tailed flycatcher (''Ficedula ruficauda'') * European pied flycatcher (''Ficedula hypoleuca'') * Atlas pied flycatcher (''Ficedula speculigera'') * Collared flycatcher (''Ficedula albicollis'') * Semicollared flycatcher (''Ficedula semitorquata'') * Yellow-rumped flycatcher (''F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ficedula Hypoleuca Sussex 2
The ''Ficedula'' flycatchers are a genus of Old World flycatchers. The genus is the largest in the family, containing around thirty species. They have sometimes been included in the genus ''Muscicapa''. The genus is found in Europe, Asia and Africa. Several species are highly migratory, whereas other species are sedentary. Taxonomy and systematics The genus was introduced by the French naturalist Mathurin Jacques Brisson in 1760 with the European pied flycatcher (''Ficedula hypoleuca'') as the type species. The genus name is from Latin and refers to a small fig-eating bird (''ficus'', "fig") supposed to change into the blackcap in winter. Extant species The genus contains the following species: * Rusty-tailed flycatcher (''Ficedula ruficauda'') * European pied flycatcher (''Ficedula hypoleuca'') * Atlas pied flycatcher (''Ficedula speculigera'') * Collared flycatcher (''Ficedula albicollis'') * Semicollared flycatcher (''Ficedula semitorquata'') * Yellow-rumped flycatcher (''F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethology Ecology & Evolution
''Ethology Ecology & Evolution'' is a bimonthly peer-reviewed scientific journal covering all aspects of the ecology, evolution or genetics of behaviour. It was established in 1890 as ''Monitore Zoologico Italiano'', obtaining its current name in 1989, with volume numbering restarted at 1. It is published by Taylor & Francis and the editor-in-chief is Alberto Ugolini (University of Florence). A brief history The journal was established in 1890 by Giulio Chiarugi and Eugenio Ficalbi (who edited it until 1922) as the ''Monitore Zoologico Italiano''. From the start, a specific interest is declared for zoology, anatomy, and embryology. The Unione Zoologica Italiana was founded in 1900 and in the same year the ''Monitore'' became its official journal. In 1923 Ficalbi was succeeded by Angelo Senna. From 1930 to 1933 the journal also became the official journal of the Società Italiana di Anatomia. Since 1934 it is no longer the organ of the Unione Zoologica Italiana and from 1934 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dark-edged Splitfin
The dark-edged splitfin (''Girardinichthys multiradiatus'') is a species of fish in the family Goodeidae endemic to Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema .... It is a live-bearing, cold-water fish from the mountains of Mexico. The species is incredibly temperature sensitive. If water is too cold, all offspring turn out to be male. If water is too hot, females will birth their first brood of only 1–3 fry and then die shortly thereafter, which makes it very difficult to maintain a colony. It is also a primarily carnivorous species that eats a variety of insects. ''Girardinichtys multiradiatus'' is an endangered species with multiple population threats with little conservation efforts put in place to protect the species. Anatomy and Morphology The dark-edged split ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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