|
Dear Enemy Effect
The dear enemy effect or dear enemy recognition is an ethological phenomenon in which two neighbouring territorial animals become less aggressive toward one another once territorial borders are well established. As territory owners become accustomed to their neighbours, they expend less time and energy on defensive behaviors directed toward one another. However, aggression toward unfamiliar neighbours remains the same. Some authors have suggested the dear enemy effect is territory residents displaying lower levels of aggression toward familiar neighbours compared to unfamiliar individuals who are non-territorial "floaters".Bee, M.A., (2003). A test of the "dear enemy effect" in the strawberry dart-poison frog (''Dendrobates pumilio''). Behavioral Ecology and Sociobiology, 54: 601-610 The dear enemy effect has been observed in a wide range of animals including mammals, birds, reptiles, amphibians, fish and invertebrates. It can be modulated by factors such as the location of the fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethological
Ethology is the scientific study of animal behaviour, usually with a focus on behaviour under natural conditions, and viewing behaviour as an evolutionarily adaptive trait. Behaviourism as a term also describes the scientific and objective study of animal behaviour, usually referring to measured responses to stimuli or to trained behavioural responses in a laboratory context, without a particular emphasis on evolutionary adaptivity. Throughout history, different naturalists have studied aspects of animal behaviour. Ethology has its scientific roots in the work of Charles Darwin and of American and German ornithologists of the late 19th and early 20th century, including Charles O. Whitman, Oskar Heinroth, and Wallace Craig. The modern discipline of ethology is generally considered to have begun during the 1930s with the work of Dutch biologist Nikolaas Tinbergen and Austrian biologists Konrad Lorenz and Karl von Frisch, the three recipients of the 1973 Nobel Prize in Physio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passerine
A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by the arrangement of their toes (three pointing forward and one back), which facilitates perching. With more than 140 families and some 6,500 identified species, Passeriformes is the largest clade of birds and among the most diverse clades of terrestrial vertebrates, representing 60% of birds.Ericson, P.G.P. et al. (2003Evolution, biogeography, and patterns of diversification in passerine birds ''J. Avian Biol'', 34:3–15.Selvatti, A.P. et al. (2015"A Paleogene origin for crown passerines and the diversification of the Oscines in the New World" ''Molecular Phylogenetics and Evolution'', 88:1–15. Passerines are divided into three clades: Acanthisitti (New Zealand wrens), Tyranni (suboscines), and Passeri (oscines or songbirds). The passeri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damselfish
Damselfish are those within the subfamilies Abudefdufinae, Chrominae, Lepidozyginae, Pomacentrinae, and Stegastenae within the family Pomacentridae. Most species within this group are relatively small, with the largest species being about 30cm (12 in) in length. Most damselfish species exist only in marine environments, but a few inhabit brackish or fresh water. These fish are found globally in tropical, subtropical, and temperate waters. Habitat in tropical rocky or coral reefs, and many of those are kept as marine aquarium pets. Their diets include small crustaceans, plankton, and algae. However, a few live in fresh and brackish waters, such as the freshwater damselfish, or in warm subtropical climates, such as the large orange Garibaldi, which inhabits the coast of southern California and the Pacific Mexican coast. Foraging The domino damselfish '' D. albisella'' spends the majority (greater than 85%) of its daytime hours foraging. Larger individuals typically fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convict Cichlid
The convict cichlid (''Amatitlania nigrofasciata'') is a fish species from the family Cichlidae, native to Central America, also known as the zebra cichlid. Convict cichlids are popular aquarium fish and have also been the subject of numerous studies on fish behaviour. Taxonomy Albert Günther originally described the species in 1867 after Frederick DuCane Godman and Osbert Salvin collected specimens in Central America. In 2007, the species was moved from the genus '' Archocentrus'' to a new genus, '' Amatitlania'', based on Juan Schmitter-Soto's study of ''Archocentus'' species. However, a 2008 study led by Oldřich Říčan proposed moving the species in ''Cryptoheros'' and ''Amatitlania'', including ''Amatitlania nigrofasciata'' into the genus '' Hypsophrys''. The convict cichlid, as traditionally defined, displays significant color variations across its range. Some of these regional variants are now considered different species. One of these is ''A. siquia'', the Honduran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyprinodon
''Cyprinodon'' is a genus of pupfishes found in waters that range from fresh to hypersaline. The genus is primarily found in Mexico, the Caribbean Islands and southern United States (Arizona, California, Florida, Nevada, New Mexico, Oklahoma and Texas), but ''C. variegatus'' occurs as far north as Massachusetts and along the entire Gulf of Mexico coastline, and ''C. dearborni '' and ''C. variegatus'' are found in northern South America.Martin, C. H., and P. C. Wainwright (2013). ''Multiple Fitness Peaks on the Adaptive Landscape Drive Adaptive Radiation in the Wild.'' Science 339(6116): 208-211. Many species have tiny ranges and are highly threatened, in some cases already extinct. ''Cyprinodon'' are small; the largest reaches in length and most other species only reach about half that size. Distribution and habitat A few ''Cyprinodon'' species have quite large ranges, notably '' C. variegatus'', but the vast majority have small ranges, typically restricted to one or two Mexi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anomaloglossus Beebei
''Anomaloglossus beebei'' (common names: Beebe's rocket frog, golden rocket frog) is a species of frog in the family Aromobatidae. This frog is endemic to Guyana, specifically in the Kaieteur National Park. It mainly survives on the giant bromeliad called Brocchinia micrantha. The phytotelmata of this bromeliad is the site of oviposition and tadpole rearing and are defended over time by the males. The females of this species are more brightly golden colored whereas males are more of a dull tan with brown pigmentation. Males take care of offspring and are preferred due to the elongation of their calls. Description The A. beebei has granular central skin, and moderate basal toe webbing. The male A. beebei has a snout-vent length maximum of 16.80 mm. This frog has a shorter Finger I than Finger II and dorsolateral stripes, this helps differentiate them from other species. The golden rocket frog species exhibits a rare phenomenon of reverse sexual dichromatism, meaning that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agile Frog
The agile frog (''Rana dalmatina'') is a European frog in the genus ''Rana'' of the true frog family, Ranidae. Description This species is fat and has long limbs and a pointy snout. Adult males are rarely larger than 6.5 cm, while females can grow up to 8 cm. Its dorsal surface is light brown, reddish-brown, or light greyish-brown with very little contrast. Triangle-shaped spots reach from the temple to the eardrum, which are dark brown. The underside of the agile frog is white without any spots. During mating season, the males often become dark brown. The hind legs are unusually long, which allow this species to jump further than other similar frogs - they have been known to jump up to two metres in distance. The pupils are horizontal. The colour of the upper third of the iris (above the pupil) is lighter and gold in coloration. The tympanum is about the size of the diameter of the eye. The gland stripes on the frog's back are not very developed and partially inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podarcis Hispanicus
''Podarcis hispanicus,'' also known as Iberian wall lizard, is a small wall lizard species of the genus ''Podarcis''. It is found in the Iberian peninsula, in northwestern Africa and in coastal districts in Languedoc-Roussillon in France. In Spanish, this lizard is commonly called ''lagartija Ibérica''. The Iberian wall lizard is very agile and can move rapidly across a rock face. Males are somewhat territorial. Females lay clutches of one to five oval eggs which hatch in about eight weeks. At birth, the juveniles have a snout-to-vent length of . The lifespan of this lizard is about four years. History and taxonomy ''Podarcis hispaniscus'' was first described in Steindachner’s works in 1870 and are composed of multiple distinct lineages. Most research has been done on the Spanish Levant form of ''Podarcis hispanicus''. They are commonly found in the Baetic mountains and south of Rio Guadalquivir. The North African Podarcis hispaniscus are now ranked as ''Padarcis vaucheri' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Anole
The brown anole (''Anolis sagrei''), also known commonly as the Cuban brown anole, or De la Sagra's anole, is a species of lizard in the family Dactyloidae. The species is native to Cuba and the Bahamas. It has been widely introduced elsewhere, via the importation and exportation of plants where the anole would lay eggs in the soil of the pots, and is now found in Florida and as far north in the United States as southern Georgia, Texas, Louisiana, Tennessee, Mississippi, Alabama, Hawaii, and Southern California. It has also been introduced to other Caribbean islands, Mexico, and Taiwan. This species is highly invasive. In its introduced range, it reaches exceptionally high population densities, is capable of expanding its range very quickly, and both outcompetes and consumes many species of native lizards, like the green anole. The brown anole's introduction into the United States in the early 1970s has altered the behavior and negatively affected populations of the native Caro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenophorus
''Ctenophorus'' is a genus of lizards, commonly known as comb-bearing dragons, in the family Agamidae. The genus contains the most diverse group of dragon lizards in Australia. It is the largest group of Australian lizards and it has an extensive radiation in the arid zones. Many of the species of ''Ctenophorus'' have been grouped by a similar morphology. The informal names and groupings within this genus — rock dragon, crevice-dragon, ground-dragon, sand-dragon, and bicycle-dragon — are named after the mythological creature, the dragon. Lizards in the genus ''Ctenophorus'' may be confused with lizards in the genera '' Tympanocryptis'' and ''Diporiphora''. Swan G, Shea G, Sadlier R (2004) ''A Field Guide to Reptiles of New South Wales''. Sydney, New South Wales: Reed New Holland. . Species There are 34 recognized species in the genus. *'' Ctenophorus adelaidensis'' (Gray, 1841) – western heath dragon *'' Ctenophorus butlerorum'' (Storr, 1977) – Butler's dragon, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anolis Sagrei Sagrei (displaying)
''Anolis'' is a genus of anoles (), iguanian lizards in the family Dactyloidae, native to the Americas. With more than 425 species, it represents the world's most species-rich amniote tetrapod genus, although many of these have been proposed to be moved to other genera, in which case only about 45 ''Anolis'' species remain. Previously, it was classified under the family Polychrotidae that contained all the anoles, as well as ''Polychrus'', but recent studies place it in the Dactyloidae. Taxonomy This very large genus displays considerable paraphyly, but phylogenetic analysis suggests a number of subgroups or clades. Whether these clades are best recognized as subgenera within ''Anolis'' or separate genera remains a matter of dispute. If the clades are recognized as full genera, about 45 species remain in ''Anolis'', with the remaining moved to ''Audantia'' (9 species), ''Chamaelinorops'' (7 species), ''Ctenonotus'' (more than 40 species), ''Dactyloa'' (''circa'' 95 species), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_(12598764423).jpg "Click for more on -> Cyprinodon")
