nomes no trilho de navegação
The genus Draco is a remarkable radiation of about 45 arboreal lizard species, wide spread throughout Southeast Asia.They are known as the flying dragons or flying lizards (although they do not fly, they glide), and are amongst the best of the gliding vertebrates, with several adaptations for generating lift and airfoil in order to move among tall trees in their native forests.Especially important adaptations are elongation of their thoracic ribs to support a gliding membrane, called a patagium, which allows them to glide for long distances, throat lappets to enhance lift and assist in balance, and long streamlined hind limbs with aerodynamic scaling, which also contribute to lift.
Patagium structures are also found in at least two other extant lizard lineages, both geckos, but patagium in Draco species are far larger and supported by active and highly modified musculature. Lizards in this genus show a large size range, spanning a 10-fold difference in body mass between largest and smallest species (between 3-35 grams).However patagium shape is highly conserved among them and scaled allometrically.Recent research finds that larger species of flying dragons are poorer gliders than smaller species, indicating that they do not have behavioral or biomechanical adaptations to compensate for the decreased ratio of lift generation to body size.The four instances of evolution of larger size in Draco lizards occur where multiple species live in overlapping ranges, an observation leading McGuire and Dudley (2005) to hypothesis that the disadvantage of increased size upon gliding ability is only overcome when needed to partition microhabitats among more than one sympatric species.
Draco lizards are highly territorial.Males actively patrol their territories, which include up to several trees, by gliding and never come down to the ground.Females glide through male territories and also do not descend from trees except to lay eggs on the ground. In addition to its use for gliding, the dorsal surface of the patagium is opened and used as a flag in territorial disputes and in courtship, along with a brightly colored dewlap and throat lappets.In general males are more brightly colored than females, although some species have similar coloring of their patagium, and in some species females have stronger coloration.The ventral patagium surface is also sexually dimorphic in coloration; some researchers have proposed that this is so individuals can distinguish flying males and females from below.
A phylogenetic framework of relationships among species was generated in 2001.Ongoing research includes biogeographical studies of the radiation, as well as flight mechanics and evolution, and prediction of gliding performance and capabilities of now extinct Permian and Triassic reptiles that share similar morphological adaptations for flight with the Draco lizards (McGuire and Dudley 2011; McGuire and Heang 2001; McGuire and Dudley 2005).
For alternative betydninger, se drage. (Se også artikler, som begynder med drage)
Drager (Draco) eller drageøgler, er en slægt af øgler fra familien Agamidae (agamer). Disse øgler er specielt kendt for deres evne til at svæve fra træ til træ. Det gør de ved at udfolde nogle ekstra ribben med membraner spændt ud imellem hvert, hvilket udgør de såkaldte "vinger". Mens de er i luften bruger de deres strubesæk til at stabiliserer svævningen, hvilket giver dem en høj grad af kontrol over deres flyvning. Udover deres strubesæk bruger de også deres hale til at styre og holde balancen med.
Drageøgler er ikke særligt store. De bliver omkring 20 cm inklusiv halen. Selve halen udgør ofte mere end halvdelen af kroppens længde. Hunnerne bliver en lille smule større end hannerne. Hannerne bliver Ca. 195 mm, og hunnerne bliver 210 mm.
Drageøgler burde ikke være særligt svære at genkende pga. vingerne og deres meget specielle strubesække. Derudover ligner de meget slanke, strømlinede firben.
Drageøglerne findes hovedsageligt i sydøstlige asiatiske lande, som Thailand og Indonesien.
For alternative betydninger, se drage. (Se også artikler, som begynder med drage) Drager (Draco) eller drageøgler, er en slægt af øgler fra familien Agamidae (agamer). Disse øgler er specielt kendt for deres evne til at svæve fra træ til træ. Det gør de ved at udfolde nogle ekstra ribben med membraner spændt ud imellem hvert, hvilket udgør de såkaldte "vinger". Mens de er i luften bruger de deres strubesæk til at stabiliserer svævningen, hvilket giver dem en høj grad af kontrol over deres flyvning. Udover deres strubesæk bruger de også deres hale til at styre og holde balancen med.
Dieser Artikel wurde aufgrund von formalen oder inhaltlichen Mängeln in der Qualitätssicherung Biologie zur Verbesserung eingetragen. Dies geschieht, um die Qualität der Biologie-Artikel auf ein akzeptables Niveau zu bringen. Bitte hilf mit, diesen Artikel zu verbessern! Artikel, die nicht signifikant verbessert werden, können gegebenenfalls gelöscht werden.
Lies dazu auch die näheren Informationen in den Mindestanforderungen an Biologie-Artikel.
Die Flugdrachen (Draco) sind eine Gattung der Echsenfamilie der Agamen (Agamidae). Die Arten dieser Gattung sind in Südostasien und im südwestlichen Indien weit verbreitet und leben ausschließlich auf Bäumen.[1]
Die 20 bis 26 Zentimeter langen Flugdrachen tragen an fünf bis acht verlängerten Rippen Flughäute, mit denen sie im Gleitflug von Baum zu Baum segeln können. Meistens überbrücken sie nur wenige Meter, sind aber auch zu Gleitflug von bis zu 60 Metern Länge fähig. Die Hautsegel, wie auch der Kehlsack, sind oft bunt gefärbt und werden in Ruhestellung seitlich am Körper nach hinten zusammengelegt.
Flugdrachen leben in von Zweiflügelfruchtbäumen dominierten Wäldern mit hohem Baumbestand. Die Männchen sind sehr territorial, wobei ihr Gebiet ein bis mehrere Bäume umfasst. Sie bewegen sich gleitend und patrouillieren in ihrem Revier in dem sich nur Weibchen frei bewegen dürfen.[1]
Sie ernähren sich von Insekten, hauptsächlich von baumbewohnenden Ameisen. Nur zur Fortpflanzung kommen die Tiere auf den Boden, um ihre bis zu vier Eier zu vergraben.
Dieser Artikel wurde aufgrund von formalen oder inhaltlichen Mängeln in der Qualitätssicherung Biologie zur Verbesserung eingetragen. Dies geschieht, um die Qualität der Biologie-Artikel auf ein akzeptables Niveau zu bringen. Bitte hilf mit, diesen Artikel zu verbessern! Artikel, die nicht signifikant verbessert werden, können gegebenenfalls gelöscht werden.
Lies dazu auch die näheren Informationen in den Mindestanforderungen an Biologie-Artikel.
Die Flugdrachen (Draco) sind eine Gattung der Echsenfamilie der Agamen (Agamidae). Die Arten dieser Gattung sind in Südostasien und im südwestlichen Indien weit verbreitet und leben ausschließlich auf Bäumen.
Ang Draco ay isang sari ng butiking agamid (mga Agamidae) na lumilipad sa pamamagitan ng pagbuka lamang ng pakpak na hindi pumapagaspas o sumasalibay lamang (sumasabay lamang sa daloy ng hangin). Nagmula ang mga ito sa Timog-Silangang Asya. Naibubuka ang mga tadyang at pang-ugnay na membrano upang makalikha ng isang pakpak, ang panlikod na mga paa ay lapad at tila mga pakpak, at nagsisilbing pahalang na pampatatag ang isang maliit na kapangkatan ng mga palapa sa leeg. Kumakain ng mga kulisap ang mga ito. Hinango ni Carolus Linnaeus ang pangalan ng saring ito mula sa salitang Latin para sa mitolohikong mga dragon.
Kilalang-kilala ang mga butiki sa kanilang mga kayariang palamuti at kakayahang lumipad o sumalibay ng malalayong distansiya sa pamamagitan ng kanilang mala-pakpak na mga membranong patagium na sinusuportahan ng isang mahabang torasikong (thoracic) tadyang upang makalikha ng lakas o puwersang pampalutang o pampaangat.[1]
Ang Draco ay isang sari ng butiking agamid (mga Agamidae) na lumilipad sa pamamagitan ng pagbuka lamang ng pakpak na hindi pumapagaspas o sumasalibay lamang (sumasabay lamang sa daloy ng hangin). Nagmula ang mga ito sa Timog-Silangang Asya. Naibubuka ang mga tadyang at pang-ugnay na membrano upang makalikha ng isang pakpak, ang panlikod na mga paa ay lapad at tila mga pakpak, at nagsisilbing pahalang na pampatatag ang isang maliit na kapangkatan ng mga palapa sa leeg. Kumakain ng mga kulisap ang mga ito. Hinango ni Carolus Linnaeus ang pangalan ng saring ito mula sa salitang Latin para sa mitolohikong mga dragon.
Учуучу ажыдаарлар (лат. Draco, L. 1758) — агама кескелдириктеринин бир уруусу.
பறக்கும் பல்லி (Draco) என்பது ஓந்திவகையி குடும்பத்தைச் சேர்ந்த பேரினம் ஆகும். இதில் மொத்தம் 42 இனங்கள் உள்ளன.[1][2] இவற்றின் விலா எலும்புகள் மற்றும் அவற்றின் இணைப்பு சவ்வு நீண்டு இறக்கைகளாக மாறி பறக்க உதவுகின்றன. இவற்றின் பின்னங்கால்கள் தட்டையாகவும் குறுக்கு வெட்டுத்தோற்றத்தில் இறக்கை போன்றும் உள்ளன. மேலும் கழுத்தில் உள்ள மடல் போன்ற உறுப்பு கிடைமட்ட நிலைப்படுத்தியாக உதவுகிறது. பறக்கும் பல்லிகள் அனைத்தும் மரத்தில் வாழும் பூச்சியுண்ணிகள் ஆகும்.
பறக்கும் பல்லி (Draco) என்பது ஓந்திவகையி குடும்பத்தைச் சேர்ந்த பேரினம் ஆகும். இதில் மொத்தம் 42 இனங்கள் உள்ளன. இவற்றின் விலா எலும்புகள் மற்றும் அவற்றின் இணைப்பு சவ்வு நீண்டு இறக்கைகளாக மாறி பறக்க உதவுகின்றன. இவற்றின் பின்னங்கால்கள் தட்டையாகவும் குறுக்கு வெட்டுத்தோற்றத்தில் இறக்கை போன்றும் உள்ளன. மேலும் கழுத்தில் உள்ள மடல் போன்ற உறுப்பு கிடைமட்ட நிலைப்படுத்தியாக உதவுகிறது. பறக்கும் பல்லிகள் அனைத்தும் மரத்தில் வாழும் பூச்சியுண்ணிகள் ஆகும்.
Draco is a genus of agamid lizards[1] that are also known as flying lizards, flying dragons or gliding lizards. These lizards are capable of gliding flight via membranes that may be extended to create wings (patagia), formed by an enlarged set of ribs. They are arboreal insectivores.
While not capable of powered flight they often obtain lift in the course of their gliding flights. Glides as long as 60 m (200 ft) have been recorded, over which the animal loses only 10 m (33 ft) in height, which is quite some distance, considering that one lizard is only around 20 cm (7.9 in) in total length, tail included.[2] They are found across Southeast Asia and southern India and are fairly common in forests, areca gardens, teak plantations and shrub jungle.
Carl Linnaeus described the genus in 1758, with the type species being Draco volans. The name of the genus is from the Latin term for mythological dragons. In the early and mid 20th century, there was controversy about their gliding capabilities, with some authors suggesting that the patagia were solely for display, but research in the late 1950s firmly established the gliding function of the patagia.[3]
The lizards are well known for their "display structures" and ability to glide long distances using their wing-like, patagial membranes supported by elongated thoracic ribs to generate lift forces.[4] The hindlimbs in cross section form a streamlined and contoured airfoil, and are also probably involved in generating lift.[3] Gliding is both used to escape predators, and as the primary means of moving through their forest habitat.[3] The folding and unfolding of the membrane is controlled by the iliocostalis and intercostal muscles, which in other lizards are used to control breathing. At takeoff, the lizard jumps and descends headfirst, orientating itself so that the underside of the body is parallel to the ground. During flight, the back arches, forming the patagium into a cambered surface, and the forelimbs grab the front of the patagium, forming a straight front edge to the aerofoil. The forelimbs are used to manipulate the patagium in order to adjust the trajectory during flight. Maximum gliding speeds have been found to be between 5.2 and 7.6 metres per second, depending on the species. During the landing process, the glide is mostly horizontal. Immediately before landing, the forelimbs release the patagium. The landing is forefeet-first, followed by hindfeet.[5] The shape of the gliding membrane does not correlate with body size, meaning the larger species have proportionately less lift-generating surface area and consequently higher wing loading.[6]
Members of Draco are primarily arboreal, inhabiting tropical rainforests, and are almost never found on the forest floor.[3] They are insectivorous, primarily feeding on ants and termites.[7] The colour of the patagium is strongly correlated to the colour of the local falling leaves, likely as camouflage against predatory birds.[8]
Draco lizards are highly territorial, with the home range consisting of one or a few trees. The trees are actively guarded by males, with territory-less males searching the forest landscape in search of vacant areas. Experimental studies have determined that suitable unoccupied territories were claimed within a few hours of the removal of a dominant male. Females move freely through the territories. The patagium is used as a display structure during courtship and territorial disputes between rival males, alongside the opening of a colourful dewlap.[3] The dewlap is translucent, and deliberately orientated perpendicular to the orientation of the sun during display in order to enhance visibility.[9] Draco is sexually dimorphic, with females being larger than males.[10][11] The only time a female flying lizard ventures to the ground is when she is ready to lay her eggs. She descends the tree she is on and makes a nest hole by forcing her head into the soil. She then lays 2–5 eggs before filling the hole and guards the eggs for approximately 24 hours, but then leaves and has nothing more to do with her offspring.[2]
Species of Draco are widely distributed in the forests of Southeast Asia, with one species, Draco dussumieri, inhabiting Southern India.[12]
Within Agamidae, Draco is a member of the subfamily Draconinae. Within Draconinae, Draco is most closely related to the genera Japalura and Ptyctolaemus.[13]
_(14136387745).jpg)
The following 41 species are recognized:[1][14]
Nota bene: a binomial authority in parentheses indicates that the species was originally described in a genus other than Draco.
Several other lineages of reptile known from the fossil record have convergently evolved similar gliding mechanisms, the oldest of these being the weigeltisaurids, known from the Late Permian, around 258 to 252 million years ago. Other lineages include the Triassic kuehneosaurids and Mecistotrachelos, and the Cretaceous lizard Xianglong.[3][5]
Draco is a genus of agamid lizards that are also known as flying lizards, flying dragons or gliding lizards. These lizards are capable of gliding flight via membranes that may be extended to create wings (patagia), formed by an enlarged set of ribs. They are arboreal insectivores.
While not capable of powered flight they often obtain lift in the course of their gliding flights. Glides as long as 60 m (200 ft) have been recorded, over which the animal loses only 10 m (33 ft) in height, which is quite some distance, considering that one lizard is only around 20 cm (7.9 in) in total length, tail included. They are found across Southeast Asia and southern India and are fairly common in forests, areca gardens, teak plantations and shrub jungle.
El género Draco pertenece a la familia de lagartos Agamidae. Sus miembros se conocen vulgarmente como dragones voladores.
Estos lagartos viven en los árboles en los bosques tropicales del sudeste de Asia, especialmente en las islas del Archipiélago Malayo y Filipinas.
Miden de 20 a 26 centímetros de largo y gracias a unas membranas pueden planear de árbol a árbol, en la mayoría de los casos por pocos metros de distancia pero se han registrado planeos de hasta unos 60 metros de distancia perdiendo solo 10 metros de altitud.
Los reptiles de este género suelen alimentarse de insectos, principalmente de hormigas arbóreas. Sus costumbres son arbóreas yendo a la tierra únicamente para aparearse donde luego de la copula entierran sus huevos, usualmente entre 2 y 5 a los que cuida durante sólo 24 horas.
El género Draco pertenece a la familia de lagartos Agamidae. Sus miembros se conocen vulgarmente como dragones voladores.
Estos lagartos viven en los árboles en los bosques tropicales del sudeste de Asia, especialmente en las islas del Archipiélago Malayo y Filipinas.
Miden de 20 a 26 centímetros de largo y gracias a unas membranas pueden planear de árbol a árbol, en la mayoría de los casos por pocos metros de distancia pero se han registrado planeos de hasta unos 60 metros de distancia perdiendo solo 10 metros de altitud.
Los reptiles de este género suelen alimentarse de insectos, principalmente de hormigas arbóreas. Sus costumbres son arbóreas yendo a la tierra únicamente para aparearse donde luego de la copula entierran sus huevos, usualmente entre 2 y 5 a los que cuida durante sólo 24 horas.
Lenddraakonid (Draco) on soomuseliste seltsi agaamlaste sugukonda kuuluvate sisalike perekond.
Teaduslikult kirjeldas lenddraakoneid esimesena Linnaeus 1758 ja valis neile niisuguse nimetuse nende lennuvõime tõttu, mis on roomajate seas ebatavaline.[2]
Nad elavad kogu Kagu-Aasias Lõuna-Indiast ja Lõuna-Hiinast kuni Filipiinide ja Väikeste Sunda saarteni.[2]
Lenddraakonite üldpikkus ei ületa 25–40 cm. Saba hõlmab sellest umbes poole, mõnel liigil rohkemgi. Kõige suurem liik suur lenddraakon elab Malaka poolsaarel ja Lõuna-Birmas ning kasvab kuni 40 cm pikaks. Kõige levinuma liigi, täpilise lenddraakoni pikkus koos sabaga ei ületa 20 cm.[2]
Lenddraakonite pea on kõrge ja nurgeline, lühikese tömbi ninamikuga. Kurgualuse keskjoonel ripub isastel kurgupaun, mis ulatub kaugele ette, kuni ninamiku eesservani, sest pauna toetavad keeleluu jätked. Kaela külgedel on kõrvale suunatud lamedad nahaväljakasvud.[2]
Keha on sihvakas ja lamenenud, kaetud väikeste soomustega, mille keskel on üksikuid teritunud köbrukesi. Mõnel liigil on kuklas, puusade tagaserval ja sabal madal hari, mis moodustub väikestest lamedatest kolmnurksetest soomustest. Pikkadel jalgadel on haakuvad varbad ja teravad kõverad küünised. Saba on väga pikk ja niitjalt peenenenud.[2]
Lenddraakoni keha on ülalt tavaliselt roheline või rohekashall tumedate täppidega. Niisugusena on loom tagasihoidlik ega tõmba endale kuidagi tähelepanu. Ent nahakurrud, kurgupaun ja väljakasvud on väga erksalt värvunud. Kuidas nimelt, see oleneb suuresti liigist, aga varieerub isegi liigisiseselt ja isendid suudavad selle põhjal üksteisel vahet teha. Isased on alati eredamalt värvunud kui emased. Õieliaetud nahakurdude ülapool võib olla oranžikas-punane, pronksjas, punakaskollane, tumepurpurne, punakas- või kollakaspruun, arvukate mustade laikude või vöötidega, heledate tähnide või valgete ristjoontega. Alt on nahakurrud tavaliselt sidrunkollased või helesinised. Kurgupaunal võivad ülekaalus olla kollased, helesinised, punased või mustad toonid. Kireva välimuse pärast võrreldakse lenddraakoneid sageli liblikatega.[2]
Lenddraakonid on puuloomad. Võras on nad tavaliselt üsna kõrgel. Kui lenddraakonit jälitama hakata, siis ei kiirusta ta hüppama, vaid jookseb kiiresti tüve mööda veelgi kõrgemale. Kui oht on endiselt lähedal, siis tõukab ta jalgadega jõuliselt ära, sirutab nahakurrud laiali ja lendab naaberpuule, kus esimese asjana jookseb puu taha peitu.[2]
Kui lenddraakon rahulikult istub, siis on tema ebaroided ja nende toetatud nahakurrud pööratud tahapoole, surutud vastu keha ega paista välja. Enne hüpet ajab lenddraakon need laiali ja loomale nagu tekiks kummalegi küljele tiib. Lenddraakon hüppab 20–30° nurga all ülespoole. Ta võib hüpata mitmekümne meetri kaugusele, mis tema väikesi mõõtmeid arvestades on märkimisväärne kaugus. Hüppe ajal võib ta lennusuunda nii rõht- kui püsttasandis pisut muuta.[2]
Lenddraakoni kõige pikem registreeritud hüpe küündis 60 meetri kaugusele ja selle jooksul kaotas loom kõrguses üksnes 10 m.
Igal isasloomal on oma jahiala, mis hõlmab mitu lähestikku kasvavat puud. Kui kaks isast kokku saavad, siis alustavad nad oma kurgupauna vastastikku pungitamisest. Kui sedamoodi ei suudeta kindlaks teha, kumb neist tugevam on, siis järgneb kähmlus. Võitja kihutab kaotaja oma territooriumilt välja.[2]
Lenddraakonid toituvad kõikvõimalikest putukatest, eriti sipelgatest. Nad püüavad saaki puude lehtedel ja tüvedel, aga lendavaid putukaid haaravad tihti lennult.[2]
Emased lenddraakonid kaevavad puutüve jalami lähedale augu ja munevad sinna 2–6 muna[2]. Emane valvab neid umbes ööpäeva jagu, aga siis lahkub ega tee enam oma järglastega mingit tegemist. See on ka ainus juhtum, kus lenddraakon üldse maapinnale tuleb.
Lenddraakonite perekonnas eristatakse järgmisi liike (liigi järel on esmakirjeldaja(te) nimi ja esmakirjeldamise aasta). Kaks liiki antakse teistsuguse perekonnanimega selle märgiks, et need esmakirjeldati teise perekonda, kuid tänapäeval arvatakse lenddraakonite hulka:[3]
Lenddraakonid (Draco) on soomuseliste seltsi agaamlaste sugukonda kuuluvate sisalike perekond.
Teaduslikult kirjeldas lenddraakoneid esimesena Linnaeus 1758 ja valis neile niisuguse nimetuse nende lennuvõime tõttu, mis on roomajate seas ebatavaline.
Nad elavad kogu Kagu-Aasias Lõuna-Indiast ja Lõuna-Hiinast kuni Filipiinide ja Väikeste Sunda saarteni.
Draco Agamidae barruan sailkatzen den narrasti genero bat da. Dragoi hegalari izena ere ematen zaie. Asiako hegoalde eta ekialdean bizi dira.
19 eta 23 zentimetro arteko tamaina dute eta planeatzeko gaitasuna dute, zuhaitz batetik bestera 7 eta 10 metro arteko tarteetan hegan eginez.
Draco Agamidae barruan sailkatzen den narrasti genero bat da. Dragoi hegalari izena ere ematen zaie. Asiako hegoalde eta ekialdean bizi dira.
19 eta 23 zentimetro arteko tamaina dute eta planeatzeko gaitasuna dute, zuhaitz batetik bestera 7 eta 10 metro arteko tarteetan hegan eginez.
Draco est un genre de sauriens de la famille des Agamidae[1]. Les espèces de ce genre sont appelées Dragons volants.
Les 41 espèces de ce genre se rencontrent en Asie du Sud-Est, en Asie du Sud et dans le sud de l'Asie de l'Est[1].
Les Dragons volants sont des lézards arboricoles planants des forêts tropicales asiatiques.
Ils mesurent généralement entre 19 et 23 centimètres et se nourrissent de fourmis et de termites grâce à leur langue gluante.
Durant la saison des amours, les femelles s'aventurent sur le sol afin d'y pondre entre un et cinq œufs.
Ils sont dotés d'une paire d'ailes qui sont en fait des côtes reliées entre elles par une membrane ornée de motifs de couleurs vives tandis que le reste du corps est gris. Ces ailes leur permettent de planer sur des distances allant de 7 à 10 mètres afin de se déplacer rapidement d'arbre en arbre[2]. Au repos, les ailes des dragons volants sont repliées et elles ne se voient pas, les dragons volants ressemblent alors à n'importe quel lézard de couleur grisâtre. Le dragon volant est un modèle de l'adaptation à la vie arboricole qui conduit nombre d'espèces à planer (écureuils, serpents). Le dragon volant y parvient grâce à ses côtes très allongées qui soutiennent les ailes.
Selon Reptarium Reptile Database (9 septembre 2014)[3] :
Draco est un genre de sauriens de la famille des Agamidae. Les espèces de ce genre sont appelées Dragons volants.
Cecak terbang (Draco) adalah kelompok kadal pohon yang hampir semua spesiesnya memiliki ciri khas berupa layar di kedua sisi tubuhnya dan memiliki kemampuan berpindah dari satu pohon ke pohon lain dengan melayang di udara tanpa harus turun ke tanah terlebih dahulu. Kadal-kadal ini memiliki layar di sisi tubuhnya yang dapat dibentangkan dan berfungsi sebagai "sayap" untuk menahannya agar tidak jatuh ke tanah saat meluncur di udara. Nama-nama lain untuk spesies-spesies ini di antaranya: "kadal terbang", "bengkarung terbang", "bengkarung bersayap", "cicak bersayap", "naga terbang", "cekibar", "klarap", dan sebagainya. Nama-nama umumnya dalam bahasa Inggris adalah flying lizard dan flying dragon.[1]
Semua spesies adalah pemakan serangga (insektivora), hidup di atas pohon (arboreal) dan sangat jarang turun ke tanah. Selain layar "sayap" dan kemampuan "terbang", pada jenis-jenis kadal jantan juga memiliki layar khusus di janggutnya yang berwarna cerah dan dapat dilipat. Kadal jantan menggunakan layar itu untuk memikat kadal betina ketika musim kawin, dengan cara membuka-melipat layar secara berulang-ulang dan menggerak-gerakkan bagian depan tubuhnya ke atas dan ke bawah secara berulang-ulang. Kadal betina berkembang biak dengan bertelur.[1]
Berikut adalah daftar spesies menurut situs Reptile Database.[2][3]
Cecak terbang (Draco) adalah kelompok kadal pohon yang hampir semua spesiesnya memiliki ciri khas berupa layar di kedua sisi tubuhnya dan memiliki kemampuan berpindah dari satu pohon ke pohon lain dengan melayang di udara tanpa harus turun ke tanah terlebih dahulu. Kadal-kadal ini memiliki layar di sisi tubuhnya yang dapat dibentangkan dan berfungsi sebagai "sayap" untuk menahannya agar tidak jatuh ke tanah saat meluncur di udara. Nama-nama lain untuk spesies-spesies ini di antaranya: "kadal terbang", "bengkarung terbang", "bengkarung bersayap", "cicak bersayap", "naga terbang", "cekibar", "klarap", dan sebagainya. Nama-nama umumnya dalam bahasa Inggris adalah flying lizard dan flying dragon.
Draco (Linnaeus, 1758) è un genere di rettili squamati appartenente alla famiglia Agamidae, diffusi in Asia (dall'India alle Filippine), e conosciuti col nome comune di draghi volanti.[1]
Dotati di un paio di patagi, sono in grado di muoversi planando da un albero all'altro.
Il drago volante non supera di solito la lunghezza di venticinque centimetri. Le ali del drago, poste sui due lati del corpo, sono formate da membrane dermiche, rette da eccezionali allungamenti delle costole. Queste strutture non hanno eguali tra i sauri odierni. Il drago volante è dotato di zampe robuste, una coda forte e muscolosa e varie appendici cutanee sparse per tutto il corpo. I denti del drago volante, contrariamente a quelli degli altri sauri, sono differenziati: si possono notare anteriormente gli "incisivi", poi i "canini" e infine i "molari", in un modo molto simile a quelli degli antenati dei mammiferi (terapsidi) per un fenomeno di convergenza evolutiva.
I draghi volanti vivono nelle foreste tropicali e sono animali diurni, strettamente arboricoli. Sono animali insettivori e si nutrono di solito di formiche. La capacità del drago di planare da un albero all'altro permette a questo animale di non scendere mai sul terreno, se non per la deposizione delle uova. I maschi adulti sono vivacemente colorati rispetto alle femmine e ai giovani. Questi colori divengono ancora più accesi nel periodo della riproduzione: in questo modo la femmina e gli eventuali altri maschi pretendenti si rendono conto della forza e della salute del drago. I maschi sono molto territoriali, e non accettano la presenza di altri individui. Se due draghi si incontrano, gonfiano la gola, mettono in risalto le membrane laterali e si muovono freneticamente. Dicembre e gennaio sono i mesi durante i quali i draghi si accoppiano; in generale i maschi si comportano in modo bizzarro, come assumere una posizione eretta, e a volte anche la femmina assume questo comportamento. Prima della riproduzione, il maschio gira intorno al partner per varie volte, fino a quando non si avvicina.
Le uova vengono deposte in una buca scavata nel terreno tra le radici degli alberi o sotto un lembo di corteccia.[2]
L'incubazione dura qualche mese, e alla schiusa i giovani sono già indipendenti.
Si conoscono parecchie specie di questo animale, la più nota delle quali è Draco volans, diffuso nelle Filippine, in Malaysia e in Indonesia. Altre specie note sono Draco blanfordii, Draco dussumieri, Draco maculatus e Draco norvillii. In epoche passate esistevano altre "lucertole" che realizzarono lo stesso tipo di adattamento del drago volante, ad esempio Coelurosauravus; in alcuni casi, come in Kuehneosaurus e in Icarosaurus, le costole che sostenevano le membrane erano ancora più allungate. Tutte queste forme, però, non sono strettamente imparentate con il drago volante.
Draco (Linnaeus, 1758) è un genere di rettili squamati appartenente alla famiglia Agamidae, diffusi in Asia (dall'India alle Filippine), e conosciuti col nome comune di draghi volanti.
Dotati di un paio di patagi, sono in grado di muoversi planando da un albero all'altro.
Draco est genus lacertarum agamidarum .
Haec stipula ad biologiam spectat. Amplifica, si potes! Draco est genus lacertarum agamidarum .
Flygeagamer er en slekt av agamer som lever fra India til Sør-Kina, Filippinene, Molukkene og Timor.[1]
De har en hudfold på begge sider av kroppen, som er festet til forlengede ribbein, og som gjør det mulig for dem å glidefly mellom trær. Hannene har en hakelapp som vises fram når de kjemper om territorier. Flygeagamer finnes i mange typer skog, som tropisk regnskog, tørrere skoger, og til og med i parker i storbyer.
Slekten er rikest utviklet på Sundaøyene, der minst seks arter kan leve i samme område. Flygeagamer finnes på begge sider av Wallacelinjen. Fargen på hakelappen og flygehuden er viktig for artsbestemmelsen. Dette gjorde at de europeiske herpetologene som arbeidet med flygeagamer på 1800-tallet, undervurderte mangfoldet, ettersom de ikke hadde anledning til å observere levende eksemplarer.
Følgende liste omfatter alle sikre arter, og bygger på McGuire & Alcala,[2] McGuire & Kiew,[3] og McGuire & al.[4]
Flygeagamer er en slekt av agamer som lever fra India til Sør-Kina, Filippinene, Molukkene og Timor.
De har en hudfold på begge sider av kroppen, som er festet til forlengede ribbein, og som gjør det mulig for dem å glidefly mellom trær. Hannene har en hakelapp som vises fram når de kjemper om territorier. Flygeagamer finnes i mange typer skog, som tropisk regnskog, tørrere skoger, og til og med i parker i storbyer.
Slekten er rikest utviklet på Sundaøyene, der minst seks arter kan leve i samme område. Flygeagamer finnes på begge sider av Wallacelinjen. Fargen på hakelappen og flygehuden er viktig for artsbestemmelsen. Dette gjorde at de europeiske herpetologene som arbeidet med flygeagamer på 1800-tallet, undervurderte mangfoldet, ettersom de ikke hadde anledning til å observere levende eksemplarer.
Multimedia w Wikimedia Commons Draco – rodzaj jaszczurki z podrodziny Draconinae w rodzinie agamowatych (Agamidae).
Rodzaj obejmuje gatunki występujące w lasach Azji Południowo-Wschodniej[3].
Cechą charakterystyczną gatunków z tego rodzaju jest posiadanie błon lotnych, utworzonych z fałdów skórnych rozpiętych na znacznie przedłużonych ruchomych żebrach, tak iż z obu stron ciała powstaje mocno napięty żagiel. Poprzez ruch żeber mogą zwijać i rozwijać żagiel (fałdy) na kształt wachlarza, dzięki czemu te zwierzęta są zdolne do lotu ślizgowego, mogą nawet kontrolować kąt opadania. Z tego powodu nazywane są latającymi smokami. Osiągają 30 cm długości.
Draco: łac. draco, draconis „smok, wąż”, od gr. δρακων drakōn, δρακοντος drakontos „wąż, smok”[4].
Do rodzaju należą następujące gatunki[3]:
Draco – rodzaj jaszczurki z podrodziny Draconinae w rodzinie agamowatych (Agamidae).
Draco é uma género de lagartos da família Agamidae, vulgarmente chamados dragões-voadores, que se distinguem pelas suas membranas em forma de "asa" que lhes permitem planar de árvore em árvore.
Os Draco são arborícolas insectívoros e, embora não sejam capazes de voo auto-propulsionado, conseguem planar distancias até 60 metros, perdendo apenas 10 metros em altura, o que é uma distancia considerável atendendo a que esses lagartos medem cerca de 20 cm[1].
A única ocasião em que um destes lagartos se aventura no chão é quando uma fémea está pronta para por os ovos - ela desce da árvore onde está e faz um ninho cavando um buraco no chão com a cabeça; então põe entre 3 e 5 ovos e volta a encher o buraco. Ela vigia o ninho durante cerca de 24 horas mas depois abandona-o e não tem mais nenhum contacto com as suas crias[1].
Linnaeus atribuiu o nome a este género a partir da palavra latina para os dragões mitológicos.
Draco é uma género de lagartos da família Agamidae, vulgarmente chamados dragões-voadores, que se distinguem pelas suas membranas em forma de "asa" que lhes permitem planar de árvore em árvore.
Os Draco são arborícolas insectívoros e, embora não sejam capazes de voo auto-propulsionado, conseguem planar distancias até 60 metros, perdendo apenas 10 metros em altura, o que é uma distancia considerável atendendo a que esses lagartos medem cerca de 20 cm.
A única ocasião em que um destes lagartos se aventura no chão é quando uma fémea está pronta para por os ovos - ela desce da árvore onde está e faz um ninho cavando um buraco no chão com a cabeça; então põe entre 3 e 5 ovos e volta a encher o buraco. Ela vigia o ninho durante cerca de 24 horas mas depois abandona-o e não tem mais nenhum contacto com as suas crias.
Linnaeus atribuiu o nome a este género a partir da palavra latina para os dragões mitológicos.
Draco là một chi thằn lằn trong họ Agamidae.
Draco là một chi thằn lằn trong họ Agamidae.
トビトカゲ属（トビトカゲぞく、Draco）は、有鱗目アガマ科に属する属である。
インド南部、インドネシア、カンボジア、タイ、中華人民共和国南部、フィリピン、ベトナム、マレーシア、ミャンマー、ラオス
メスよりもオスの方が大きい種が多い。頸部側面には襞状に皮膚が伸長（副翼）する。左右に5-7本ずつ肋骨が伸長し、その間に扇状の皮膜（飛膜）がある。喉には三角形に伸長する皮膚（咽喉垂）がある。
鼻孔が上方に開口する種と側面に開口する種（アガマ科では側面に開口する種が多い）がいる。
オスは咽喉垂が発達するが、メスは咽喉垂が発達しない。
森林に生息する。樹上棲。オスは縄張りを形成して生活する。副翼と飛膜を広げる事により揚力を生じ、樹木の間を滑空する事ができる。
Draco volansの場合で滑空距離は18mにも達する。[1]
食性は動物食で、主にアリを食べる。
繁殖形態は卵生。地中に卵を産む。
ペットとして飼育される事もあり、日本にも輸入されている。輸送により状態を崩すことが多く、飼育も難しいとされる。テラリウムで飼育される。樹上棲のため、高さのあるケージで飼育するのが望ましい。枝や観葉植物等を組んで活動場所や隠れ家にする。
同所的に分布するアガマ科内では初期に分化したと考えられ、Ptyctolaemus属に近縁とされる。
鼻孔が側面に開口する種は分布や形態、分子系統学の研究から原始的な種と考えられ、鼻孔が上方に開口した種が後期に分化したと考えられている。
この項目は、動物に関連した書きかけの項目です。この項目を加筆・訂正などしてくださる協力者を求めています（Portal:生き物と自然／プロジェクト:生物）。 
_%22wing%22_underside_close-up_(14113217406).jpg)
_from_Mt._Cagua_-_ZooKeys-266-001-g044.jpg)
