Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be endemic to that particular part of the world. An endemic species can also be referred to as an endemism or, in scientific literature, as an endemite . Similarly many species found in the Western ghats of India are examples of endemism.
68-519: The kea is a parrot native to New Zealand. Kea or KEA can also refer to: Kea The kea ( / ˈ k iː ə / KEE -ə ; Māori: [kɛ.a] ; Nestor notabilis ) is a species of large parrot in the family Strigopidae that is endemic to the forested and alpine regions of the South Island of New Zealand . About 48 cm (19 in) long, it is mostly olive-green, with brilliant orange under its wings and has
136-421: A bird named Bruce, who has a broken upper beak, wedged pebbles between his tongue and lower mandible and then utilized this arrangement to aid with his preening habits. The controversy about whether the kea preys on sheep is long-running. Sheep suffering from unusual wounds on their sides or loins were noticed by the mid-1860s, within a decade of sheep farmers moving into the high country. Although some supposed
204-556: A cave environment limits an organism's ability to disperse, since caves are often not connected to each other. One hypothesis for how closely related troglobite species could become isolated from one another in different caves is that their common ancestor may have been less restricted to cave habitats. When climate conditions became unfavorable, the ancestral species was extirpated from the surface, but some populations survived in caves, and diverged into different species due to lack of gene flow between them. Isolated islands commonly develop
272-465: A constant amount in a country, as opposed to epidemic diseases, which are exploding in cases. The word was used in biology in 1872 to mean a species restricted to a specific location by Charles Darwin . The less common term 'precinctive' has been used by some entomologists as the equivalent of 'endemic'. Precinctive was coined in 1900 by David Sharp when describing the Hawaiian insects, as he
340-616: A contributing factor in a number of recent incidents at popular tourist spots where kea have been purposely killed. Kea were eaten by Māori. They were believed by the Waitaha tribe to be kaitiaki (guardians). The kea featured on the reverse side of the New Zealand $ 10 note between 1967 and 1992, when it was replaced with the blue duck (whio). Kea are the protagonists in New Zealand author Philip Temple 's novels Beak of
408-478: A euendemic the vicariance was geologic in nature, such as the movement of tectonic plates, but in a cryptoendemic the disjunct distribution was due to the extinction of the intervening populations. There is yet another possible situation that can cause a disjunct distribution, where a species is able to colonize new territories by crossing over areas of unsuitable habitat, such as plants colonizing an island – this situation they dismiss as extremely rare and do not devise
476-625: A further seven had been found dead in August 2011, following a 1080 aerial possum control operation in Ōkārito Forest . Traps are also considered a risk to kea. In September 2011, hidden cameras caught kea breaking into baited stoat traps in the Matukituki Valley . More than 75% of the traps had been sprung. In the 1970s, the kea received partial protection after a census counted only 5,000 birds. The government agreed to investigate any reports of problem birds and have them removed from
544-402: A holoendemic is a cosmopolitan species. Stenoendemics, also known as local endemics, have a reduced distribution and are synonymous with the word 'endemics' in the traditional sense, whereas euryendemics have a larger distribution -both these have distributions that are more or less continuous. A rhoendemic has a disjunct distribution . Where this disjunct distribution is caused by vicariance, in
612-470: A large, narrow, curved, grey-brown upper beak. Its omnivorous diet consists mainly of roots, leaves, berries, nectar, and insects, but also includes carrion . It was once killed for bounty due to concern by sheep-farmers that it attacked livestock, especially sheep. The kea is now uncommon, and received absolute protection under the Wildlife Act in 1986. The kea nests in burrows or crevices among
680-577: A larger area, or becoming extirpated from an area they once lived), go extinct, or diversify into more species. The extreme opposite of an endemic species is one with a cosmopolitan distribution , having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to species (and other taxonomic levels) that are restricted to a defined geographical area. Other terms that sometimes are used interchangeably, but less often, include autochthonal, autochthonic, and indigenous; however, these terms do not reflect
748-437: A limited range. Paleoendemism is more or less synonymous with the concept of a ' relict species ': a population or taxon of organisms that were more widespread or more diverse in the past. A 'relictual population' is a population that currently occurs in a restricted area, but whose original range was far wider during a previous geologic epoch . Similarly, a 'relictual taxon' is a taxon (e.g. species or other lineage) that
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#1732776860423816-439: A mirror. In one study, nest sites occur at a density of one per 4.4 square kilometres (1.7 sq mi). The breeding areas are most commonly in southern beech ( Nothofagus ) forests, located on steep mountainsides. Breeding at heights of 1,600 metres (5,200 ft) above sea level and higher, it is one of the few parrot species in the world to regularly spend time above the tree line . Nest sites are usually positioned on
884-513: A much larger area, but died out in most of their range, are called paleoendemic , in contrast to neoendemic species, which are new species that have not dispersed beyond their range. The ginkgo tree, Ginkgo biloba , is one example of a paleoendemic species. In many cases biological factors, such as low rates of dispersal or returning to the spawning area ( philopatry ), can cause a particular group of organisms to have high speciation rates and thus many endemic species. For example, cichlids in
952-522: A name for. Traditionally, none of Myers and de Grave's categories would be considered endemics except stenoendemics. Some environments are particularly conducive to the development of endemic species, either because they allow the persistence of relict taxa that were extirpated elsewhere, or because they provide mechanisms for isolation and opportunities to fill new niches. Serpentine soils act as ' edaphic islands' of low fertility and these soils lead to high rates of endemism. These soils are found in
1020-465: A number of endemics. Many species and other higher taxonomic groups exist in very small terrestrial or aquatic islands, which restrict their distribution. The Devil's Hole pupfish, Cyprinodon diabolis , has its whole native population restricted to a spring that is 20 x 3 meters, in Nevada 's Mojave Desert . This 'aquatic island' is connected to an underground basin; however, the population present in
1088-431: A population of between 3000 and 7000 individuals. Endemism Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology , because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into
1156-449: A progression from scavenging dead sheep and hides have all been put forward as to how the behaviour was first acquired. Anecdotal evidence also suggests only particular birds have learned the behaviour, with identification and removal of those individuals being sufficient to control the problem. There are also anecdotal reports of kea attacking rabbits, dogs, and even horses. There are also suggestions that kea used to feed on moa in
1224-474: A similar way. Kea, which are social, have been found to have a level of high cognitive ability, with the capacity to solve complex tasks. This curiosity and urge to explore and investigate makes this bird both a pest for residents and an attraction for tourists. In 2017 the kea was voted New Zealand Bird of the Year in a campaign to raise awareness about the country's endangered wildlife. Called "the clown of
1292-498: A species can lead to endemism in multiple ways. Allopatric speciation , or geographic speciation, is when two populations of a species become geographically separated from each other and as a result develop into different species. In isolated areas where there is little possibility for organisms to disperse to new places, or to receive new gene flow from outside, the rate of endemism is particularly high. For example, many endemic species are found on remote islands , such as Hawaii ,
1360-504: A very restrictive range, due to the unique environmental characteristics. The Kula Volcano , one of the fourteen volcanoes in Turkey , is home to 13 endemic species of plants. Endemics might more easily become endangered or extinct because they are already restricted in distribution. This puts endemic plants and animals at greater risk than widespread species during the rapid climate change of this century. Some scientists claim that
1428-625: A wide variety of evolutionary histories, so researchers often use more specialized terms that categorize endemic species based upon how they came to be endemic to an area. Different categorizations of endemism also capture the uniqueness and irreplaceability of biodiversity hotspots differently and impact how those hotspots are defined, affecting how resources for conservation are allocated. The first subcategories were first introduced by Claude P. E. Favager and Juliette Contandriopoulis in 1961: schizoendemics, apoendemics and patroendemics. Using this work, Ledyard Stebbins and Jack Major then introduced
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#17327768604231496-437: A wider distributed taxon that has become reproductively isolated without becoming (potentially) genetically isolated – a schizoendemic has the same chromosome count as the parent taxon it evolved from. An apoendemic is a polyploid of the parent taxon (or taxa in the case of allopolyploids ), whereas a patroendemic has a lower, diploid chromosome count than the related, more widely distributed polyploid taxon. Mikio Ono coined
1564-460: Is both singular and plural. The genus Nestor contains four species: the New Zealand kākā ( Nestor meridionalis ), the kea ( N. notabilis ), the extinct Norfolk kākā ( N. productus ), and the extinct Chatham kākā ( N. chathamensis ). All four are thought to stem from a "proto-kākā", dwelling in the forests of New Zealand five million years ago. Their closest relative is the flightless kākāpō ( Strigops habroptilus ). Together, they form
1632-452: Is high among young kea, with less than 40% surviving their first year. The median lifespan of a wild subadult kea has been estimated at five years, based on the proportion of kea seen again in successive seasons in Arthur's Pass, and allowing for some emigration to surrounding areas. Around 10% of the local kea population were expected to be over 20 years of age. The oldest known captive kea
1700-511: Is one of nine living endemic parrot species in New Zealand . The kea ranges from lowland river valleys and coastal forests of the South Island's west coast up to alpine regions of the South Island such as Arthur's Pass and Aoraki / Mount Cook National Park . It is closely associated throughout its range with the southern beech ( Nothofagus ) forests in the alpine ridge. Apart from occasional vagrants, kea today are not found in
1768-434: Is only possible where 1.) the taxonomy of the species in question is not in dispute; 2.) the species distribution is accurately known; and 3.) the species have relatively small distributional ranges. In a 2000 article, Myers et al . used the standard of having more than 0.5% of the world's plant species being endemic to the region to designate 25 geographical areas of the world as biodiversity hotspots . In response to
1836-618: Is the sole surviving representative of a formerly diverse group. The concept of phylogenetic endemism has also been used to measure the relative uniqueness of the species endemic to an area. In measurements that incorporate phylogenetic endemism, branches of the evolutionary tree are weighted by how narrowly they are distributed. This captures not only the total number of taxa endemic to the area (taxonomic endemism), but also how distant those species are from their living relatives. Schizoendemics, apoendemics and patroendemics can all be classified as types of neoendemics. Schizoendemics arise from
1904-1076: The Galápagos Islands and Socotra . Populations on an island are isolated, with little opportunity to interbreed with outside populations, which eventually causes reproductive isolation and separation into different species. Darwin's finches in the Galápagos archipelago are examples of species endemic to islands. Similarly, isolated mountainous regions like the Ethiopian Highlands , or large bodies of water far from other lakes, like Lake Baikal , can also have high rates of endemism. Endemism can also be created in areas which act as refuges for species during times of climate change like ice ages . These changes may have caused species to become repeatedly restricted to regions with unusually stable climate conditions, leading to high concentrations of endemic species in areas resistant to climate fluctuations. Endemic species that used to exist in
1972-649: The IUCN Red List and protected by law, kea are still deliberately shot. For example, in the late 1990s, a Fox Glacier resident killed 33 kea in the glacier car park and in 2008, two kea were shot in Arthur's Pass and stapled to a sign. Kea deaths due to traffic have prompted the NZ Transport Agency to install signs to help raise awareness, and to encourage people to slow down if necessary. In Fiordland National Park, there have been concerns that kea are particularly at risk from road traffic at
2040-520: The United Kingdom and Joeys in Australia ) is named after the bird. In the video game Dwarf Fortress , kea are one of many species of animals that will steal the player's items. Together with local councils and runholders, the New Zealand government paid a bounty for kea bills because the bird preyed upon livestock, mainly sheep. It was intended that hunters would kill kea only on
2108-504: The cougar is endemic to the Americas, and all known life is endemic to Earth. However, endemism is normally used only when a species has a relatively small or restricted range. This usage of "endemic" contrasts with "cosmopolitan." Endemics are not necessarily rare; some might be common where they occur. Likewise, not all rare species are endemics; some may have a large range but be rare throughout this range. The evolutionary history of
Kea (disambiguation) - Misplaced Pages Continue
2176-586: The African grey parrot. An omnivore, the kea feeds on more than 40 plant species, beetle larvae, grasshoppers, land snails, other birds (including shearwater chicks ), and mammals (including sheep, rabbits and mice). It has been observed breaking open shearwater nests to feed on the chicks after hearing the chicks in their nests. It enjoys the flesh and bone marrow from carcasses. The kea has also taken advantage of human garbage and "gifts" of food. Tool use behavior has been observed in this species, wherein
2244-960: The Balkan Peninsula, Turkey, Alps, Cuba, New Caledonia, South Africa, Zimbabwe, the North American Appalachians, and scattered distribution in California, Oregon, and Washington and elsewhere. For example, Mayer and Soltis considered the widespread subspecies Streptanthus glandulosus subsp. glandulosus which grows on normal soils, to be a paleoendemic, whereas closely related endemic forms of S. glandulosus occurring on serpentine soil patches are neoendemics which recently evolved from subsp. glandulosus . Obligate cave-dwelling species, known as troglobites, are often endemic to small areas, even to single individual caves, because cave habitats are by nature restricted, isolated, and fragmented. A high level of adaptation to
2312-571: The East African Rift Lakes have diversified into many more endemic species than the other fish families in the same lakes, possibly due to such factors. Plants that become endemic on isolated islands are often those which have a high rate of dispersal and are able to reach such islands by being dispersed by birds. While birds are less likely to be endemic to a region based on their ability to disperse via flight, there are over 2,500 species which are considered endemic, meaning that
2380-537: The Moon (1981) and Dark of the Moon (1993), recounting respectively the first encounters of a group of kea with humans at the time of the colonisation of the South Island by Māori , and their life in present-day, human-dominated New Zealand. Sentient Kea also features as prominent characters in the Orson Scott Card novel The Last Shadow . The youngest section of Scouts New Zealand (known as Beavers in
2448-460: The North Island. Subfossil kea bones have been found in sand dunes at Mataikona in the eastern Wairarapa , Poukawa near Hastings , and Waitomo , indicating that they ranged through lowland forest over much of the North Island until the arrival of Polynesian settlers about 750 years ago. Kea subfossils are not restricted to alpine areas, being commonly found in lowland or coastal sites in
2516-602: The October 2018 issue that the birds would do well on Mount Ruapehu . Kea conservation is supported by the NGO Kea Conservation Trust , founded in 2006 to protect kea. The total kea population was estimated at between 1,000 and 5,000 individuals in 1986, contrasting with another estimate of 15,000 birds in 1992. The kea's widespread distribution at low density across inaccessible areas prevents accurate estimates. Estimates published in 2017 suggest
2584-497: The South Island. The current distribution of kea reflects the effects of mammalian predators, including humans, which have driven them out of lowland forests into the mountains. At least one observer has reported that the kea is polygynous , with one male attached to multiple females. The same source also noted that there was a surplus of females. Kea are social and live in groups of up to 13 birds. Isolated individuals do badly in captivity, but respond well to seeing themselves in
2652-546: The above, the World Wildlife Fund has split the world into a few hundred geographical ' ecoregions '. These have been designed to include as many species as possible that only occur in a single ecoregion, and these species are thus 'endemics' to these ecoregions. Since plenty of these ecoregions have a high prevalence of endemics existing within them, many National Parks have been formed around or within them to further promote conservation. The Caparaó National Park
2720-509: The birds in Murihiku . Eight years earlier, some elderly Māori had told Mantell about the bird, and how it used to visit the coast in winter but had not been seen in recent times. Mantell subsequently investigated and obtained the birds. The kea's Latin binomial specific epithet , notabilis , means "noteworthy". The common name kea is from Māori , probably an onomatopoeic representation of their in-flight call – 'keee aaa'. The word "kea"
2788-506: The cause was a new disease, suspicion soon fell on the kea. James MacDonald, head shepherd at Wanaka Station, witnessed a kea attacking a sheep in 1868, and similar accounts were widespread. Prominent members of the scientific community accepted that kea attacked sheep, with Alfred Wallace citing this as an example of behavioural change in his 1889 book Darwinism . Thomas Potts noted that attacks were most frequent during winter and snow-bound sheep with two years growth in their fleece were
Kea (disambiguation) - Misplaced Pages Continue
2856-583: The concept. In their view, everything is endemic, even cosmopolitan species are endemic to Earth, and earlier definitions restricting endemics to specific locations are wrong. Thus the subdivisions neoendemics and paleoendemics are without merit regarding the study of distributions, because these concepts consider that an endemic has a distribution limited to one place. Instead, they propose four different categories: holoendemics, euryendemics, stenoendemics and rhoendemics. In their scheme cryptoendemics and euendemics are further subdivisions of rhoendemics. In their view,
2924-518: The concepts of neoendemics and paleoendemics in 1965 to describe the endemics of California. Endemic taxa can also be classified into autochthonous, allochthonous, taxonomic relicts and biogeographic relicts. Paleoendemism refers to species that were formerly widespread but are now restricted to a smaller area. Neoendemism refers to species that have recently arisen, such as through divergence and reproductive isolation or through hybridization and polyploidy in plants, and have not dispersed beyond
2992-609: The cool climates of mountain peaks are geographically isolated. For example, in the Alpes-Maritimes department of France, Saxifraga florulenta is an endemic plant that may have evolved in the Late Miocene and could have once been widespread across the Mediterranean Basin . Volcanoes also tend to harbor a number of endemic species. Plants on volcanoes tend to fill a specialized ecological niche , with
3060-503: The entertainment and annoyance of human observers. They are often described as "cheeky". A kea has even been reported to have made off with the passport of a tourist who was visiting Fiordland National Park . The Department of Conservation also suggested that the time savings resulting from a more calorie-rich diet will give kea more free time to investigate and hence damage things at campsites and car parks. The birds' naturally trusting behaviour around humans has also been indicated as
3128-532: The entrance to the Homer Tunnel . Kea have been regularly observed on the roadway, moving amongst vehicles waiting to pass through the one-way tunnel. People feeding the birds was one cause of the problem. In 2017, a gym for kea was built near the Homer tunnel entrance, in an attempt to lure the birds away from the road. A citizen science project called the "Kea Database" was launched in 2017 that allows for
3196-756: The farms and council areas that paid the bounty, but some hunted them in national parks and in Westland , where they were officially protected. More than 150,000 were killed in the hundred years before 1970, when the bounty was lifted. A study of kea numbers in Nelson Lakes National Park showed a substantial decline in the population between 1999 and 2009, caused primarily by predation of kea eggs and chicks. Video cameras set up to monitor kea nests in South Westland showed that possums killed kea fledglings. Lead poisoning , mostly from
3264-487: The ground underneath large beech trees, in rock crevices, or dug burrows between roots. They are accessed by tunnels leading back 1 to 6 metres (3.3 to 19.7 ft) into a larger chamber, which is furnished with lichens, moss, ferns, and rotting wood. The laying period starts in July and reaches into January. Two to five white eggs are laid, with an incubation time of around 21 days, and a brooding period of 94 days. Mortality
3332-559: The kea uses its powerful, curved beak and claws to rip through the layer of wool and eat the fat from the back of the animal. Though the bird does not directly kill the sheep, death can result from infections or accidents suffered by animals when trying to escape. Since kea are now a protected species, their depredations are generally tolerated by sheep farmers, though why some kea attack sheep, and others do not, remains unclear. Various theories, including similarities with existing food sources, curiosity, entertainment, hunger, maggots as well as
3400-649: The land. In 1986 it was given absolute protection under the Wildlife Act 1953 . Kea are also listed under Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) meaning international export/import (including parts and derivatives) is regulated. Despite being classified as Nationally Endangered in the New Zealand Threat Classification System and endangered in
3468-402: The mean adult weight as 922 g (2.033 lb) It has mostly olive-green plumage with a grey beak having a long, narrow, curved upper beak. The adult has dark-brown irises , and the cere , eyerings , and legs are grey. It has orange feathers on the undersides of its wings. The feathers on the sides of its face are dark olive-brown, the ones on its back and rump are orange-red, and some of
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#17327768604233536-600: The most vulnerable, while newly-shorn sheep in warm weather were rarely molested. Despite substantial anecdotal evidence of sheep attacks, others remained unconvinced, especially in later years. For instance, in 1962, animal specialist J.R. Jackson concluded, while the bird may attack sick or injured sheep, especially if it mistook them for dead, it was not a significant predator. In August 1992, however, its nocturnal assaults were captured on video, proving that at least some kea will attack and feed on healthy sheep. The video confirmed what many scientists had long suspected: that
3604-521: The mountains", it will investigate backpacks, boots, skis, snowboards, and even cars, often causing damage or flying off with smaller items. Kea have been kept as pets before being protected, but rarely, since they were difficult to capture and destructive when in captivity. People commonly encounter wild kea at South Island ski areas, where they are attracted by the prospect of food scraps. Their curiosity leads them to peck and carry away unguarded items of clothing, or to pry apart rubber parts of cars – to
3672-550: The natural curiosity of kea which has enabled the species to adapt to its extreme environment, may increase its propensity to poisoning through ingestion of lead – i.e. the more investigative behaviours identified in a bird, the higher its blood lead levels were likely to be. The 1080 pesticide is used to control invasive pest mammals such as stoats and possums and has also been implicated in kea deaths. For example, seven kea were found dead following an aerial possum control operation using 1080, at Fox Glacier in July 2008 and
3740-515: The outer wing feathers are dull blue. It has a short, broad, bluish-green tail with a black tip. Feather shafts project at the tip of the tail and the undersides of the inner tail feathers have yellow-orange transverse stripes. The male is about 5% longer than the female, and the male's upper beak is 12–14% longer than the female's. Juveniles generally resemble adults, but have yellow eyerings and cere, an orange-yellow lower beak, and grey-yellow legs. [REDACTED] Kea call: The kea
3808-472: The parrot superfamily Strigopoidea , an ancient group that split off from all other Psittacidae before their radiation. The kea is a large parrot measuring 46 to 50 cm (18 to 20 in) in total length, with some specimens possibly reaching 55 cm (22 in). Adult kea weigh between 750 and 1,000 g (1.65 and 2.20 lb), with males averaging 956 g (2.108 lb) and females averaging 779 g (1.717 lb). One source listed
3876-677: The pool remains isolated. Other areas very similar to the Galapagos Islands of the Pacific Ocean exist and foster high rates of endemism. The Socotra Archipelago of Yemen, located in the Indian Ocean, has seen a new endemic species of parasitic leech, Myxobdella socotrensis, appear. This species is restricted to freshwater springs, where it may attach to and feed upon native crabs. Mountains can be seen as ' sky islands ': refugia of endemics because species that live in
3944-404: The presence of endemic species in an area is a good method to find geographical regions that can be considered priorities for conservation. Endemism can thus be studied as a proxy for measuring biodiversity of a region. The concept of finding endemic species that occur in the same region to designate 'endemism hotspots' was first proposed by Paul Müller in a 1973 book. According to him, this
4012-445: The recording of kea observations to an online database. If the recorded kea are banded, it is possible to match observations with individual named birds, enabling the monitoring of the habits and behaviour of individual kea. Some are calling for kea to be reintroduced into predator-free zones on the North Island. A former curator of Natural History at Whanganui Regional Museum , Dr Mike Dickison , told North & South magazine in
4080-550: The roofs of buildings/building materials, is also a significant cause of premature deaths among kea. Research on lead toxicity in kea living at Aoraki / Mount Cook found that of 38 live kea tested all were found to have detectable blood lead levels, 26 considered dangerously high. Additional analysis of 15 dead kea sent to Massey University for diagnostic pathology between 1991 and 1997 found 9 bodies to have lead blood levels consistent with causing death. Research conducted by Victoria University in 2008 confirmed that
4148-477: The roots of trees. Kea are known for their intelligence and curiosity , both vital to their survival in a harsh mountain environment. Kea can solve logical puzzles, such as pushing and pulling things in a certain order to get to food, and will work together to achieve a certain objective. They have been filmed preparing and using tools. The kea was described by ornithologist John Gould in 1856, from two specimens shown to him by Walter Mantell , who obtained
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#17327768604234216-484: The species is restricted to an area less than five million hectares (twelve million acres). Microorganisms were traditionally not believed to form endemics. The hypothesis 'everything is everywhere', first stated in Dutch by Lourens G.M. Baas Becking in 1934, describes the theory that the distribution of organisms smaller than 2 mm is cosmopolitan where habitats occur that support their growth. Endemism can reflect
4284-464: The status of a species that specifically belongs only to a determined place. The word endemic is from Neo-Latin endēmicus , from Greek ἔνδημος, éndēmos , "native". Endēmos is formed of en meaning "in", and dēmos meaning "the people". The word entered the English language as a loan word from French endémique , and originally seems to have been used in the sense of diseases that occur at
4352-424: The term 'aneuendemics' in 1991 for species that have more or fewer chromosomes than their relatives due to aneuploidy . Pseudoendemics are taxa that have possibly recently evolved from a mutation. Holoendemics is a concept introduced by Richardson in 1978 to describe taxa that have remained endemic to a restricted distribution for a very long time. In a 2000 paper, Myers and de Grave further attempted to redefine
4420-572: The threatened nature of a geographic region. A similar pattern had been found regarding mammals, Lasioglossum bees, Plusiinae moths, and swallowtail butterflies in North America: these different groups of taxa did not correlate geographically with each other regarding endemism and species richness. Especially using mammals as flagship species proved to be a poor system of identifying and protecting areas of high invertebrate biodiversity. In response to this, other scientists again defended
4488-488: Was 50 years old in 2008. Kea parrots have strong cognitive abilities. According to recent studies, Kea share the ability to have sense of impulsive control and planning forward. Kea can wait up to 160 seconds for a more preferred reward. In addition, Kea also use trial and error tactics and use observational leaning to solve difficult problems and when tasked with puzzles and locks. These abilities of decision-making are similar to primates and other intelligent bird species like
4556-566: Was formed in the Atlantic Forest , a biodiversity hotspot located in Brazil, in order to help protect valuable and vulnerable species. Other scientists have argued that endemism is not an appropriate measure of biodiversity, because the levels of threat or biodiversity are not actually correlated to areas of high endemism. When using bird species as an example, it was found that only 2.5% of biodiversity hotspots correlate with endemism and
4624-509: Was uncomfortable with the fact that the word ' endemic ' is often associated with diseases. 'Precinctive' was first used in botany by Vaughan MacCaughey in Hawaii in 1917. A species is considered to be endemic to the area where it is found naturally, to the exclusion of other areas; presence in captivity or botanical gardens does not disqualify a species from being endemic. In theory, the term "endemic" could be applied on any scale; for example,
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