Rottearter frå heile verden

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iwonamo
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Rottearter frå heile verden

Legg innav iwonamo » 06 des 2014, 05:08

Tenkte me kunne lage ein tråd der me samla alle rottearter som finst i denne verden, og dei er nemleg temmeleg mange av.
Eg veit ikkje kva de syns , men eg syns at dette her er utruleg spennande :)

Det finst ältså så mange vakre rotteskapninger, og eg starter med denne her:

Northern Luzon giant cloud rat (Phloeomys pallidus)

Bilde

Beklager, men fakta om rotta kjem kun på engelsk:

Northern Luzon giant cloud rat biology:

This nocturnal rat is primarily a tree-dwelling animal that spends most of its time high up in the branches of trees, but can also be seen on the forest floor, moving at a relatively sluggish pace (2) (5). The diet of this cloud rat in the wild is not fully known (5), but may comprise mainly of tender young leaves (2) (4), although they also eat fruit and reportedly raids crops (7).

Information regarding the breeding biology of Phloeomys species also comes from captivity, where births have been recorded in every month of the year except January, March and May (5). In the wild, a pregnant female was found in August. Cloud rats give birth to only one young each year (5), which is born in the hollow of a standing or fallen tree, or in a hole in the ground (6). The mother carries her young firmly attached to a nipple. In captivity, one individual lived for over 13 years (5).

Northern Luzon giant cloud rat range

As its name suggests, this rodent is endemic the island of Luzon in the Philippines, where it is found in the northern and central provinces (6).

Kilder: http://www.arkive.org/northern-luzon-gi ... 28491.html
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Re: Rottearter frå heile verden

Legg innav iwonamo » 06 des 2014, 06:23

Damaraland mole rat (Cryptomys damarensis)

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Like other blesmols, the Damaraland mole-rat has a cylindrical body with short, stout limbs, large feet, and a conical head. It is also similar in size to most other African mole-rats, having a head-body length of 14 to 20 cm (5.5 to 7.9 in), with a short, 2 to 3 cm (0.79 to 1.18 in), tail, and weighing between 100 and 280 grams (3.5 and 9.9 oz). There are no external ears, and the blue-coloured eyes are tiny with thick eyelids. The incisor teeth are large and prominent, with flaps of skin behind them to prevent soil from falling into the throat while the animal is using them to dig.[4]

The fur is short and thick, and varies from fawn to almost black, with shades of brown being most common. There is always a white patch on the top of the head, although its exact shape varies, and there may also be additional blotches of white fur elsewhere on the body. Longer, sensory, hairs project above the fur over much of the body, with the facial whiskers being particularly long. Females have six teats.

Although named specifically for Damaraland, the mole-rats are found across much of southern Africa, including Botswana, Namibia, South Africa, Zambia, and Zimbabwe.[1] They are inhabit warm, semi-arid environments dominated by savannah scrubland or sandy grasslands. They are most common in association with red Kalahari psamments, and are found only where there is a sufficient supply of plants with subterranean storage organs.

Damaraland mole-rats are herbivorous, feeding solely on tubers, corms, and bulbs. Favoured foods include such plants as Acanthosicyos, Star-of-Bethlehem, Ledebouria, and Talinum. Their natural predators include mole snakes, and occasionally other local snakes, such as cobras.[4] They do not drink, obtaining all their water from their food, which is also an important source of minerals. Unlike most other mammals, they can effectively metabolise these minerals without access to vitamin D, which they lack because they are normally never exposed to sunlight.[5] The basal metabolic rate of Damaraland mole rats is also unusually low for mammals of their size, at just 0.66 cm3 O2 / g · h.[4]

Despite living in an entirely subterranean environment, Damaraland mole-rats exhibit circadian rhythms, and are active primarily during the day.[6] Their levels of the hormone melatonin can be altered by artificially changing the length of apparent daylight, suggesting that they are at least able to distinguish light from dark, although their eyesight may otherwise be very poor.

As eusocial animals, only the breeding pair within a colony is capable of reproduction. Non-reproductive individuals are not truly sterile, however, and become capable of reproduction if they establish a colony of their own. The reproductive systems of non-reproductive females are underdeveloped, with small, unvascularised uteri and tiny ovaries that contain undeveloped germ cells, but which are incapable of ovulation.[4] Non-reproductive males have smaller testes than their reproductive counterparts and produce little, if any, viable sperm.[16] The non-reproductive status of other adults is maintained by the presence of the breeding female.[17] While her removal causes previously non-reproductive females to become fully fertile, they will only mate with unrelated males, thus avoiding incest within the colony.[18]

The breeding female initiates courtship by calling and drumming with her hind feet. The pair then chase each other in a right circle before mating. Mating occurs frequently over a ten-day period, and gestation lasts 78 to 92 days.[19] Females can produce up to three litters of one to six pups per year.[17] The pups are initially hairless, with closed eyes, and only weigh 8 or 9 grams. They are weaned after 28 days, and reach adult size after around 14 months.

http://en.wikipedia.org/wiki/Damaraland_mole-rat
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Re: Rottearter frå heile verden

Legg innav iwonamo » 06 des 2014, 07:01

Painted tree rat (Callistomys pictus)

Bilde

With a total length of ca. 30 cm (12 in), it is a relatively large species of spiny rat. It is white with a strongly contrasting glossy-black cap, back and band down towards its forelimbs. Its long fur is dense and coarse, but not spiny, as in some other members of its family. Specimens often have brown (rather than black) markings, but as far as it's known this is caused by fading and does not occur in the living animals.

Owing to its striking black-and-white pelage, it is virtually unmistakable, but could perhaps be confused with a hairy dwarf porcupine (Sphiggurus sp.) – all of which have spines and lack the distinctive pattern of the painted tree-rat.

Found in Atlantic forest. Also in cocoa plantations where some native trees remain. As far as known, it is nocturnal.

Geographical range: Restricted to north-eastern Bahia (often misquoted as S. Bahia) in eastern Brazil.
http://en.wikipedia.org/wiki/Painted_tree-rat
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Re: Rottearter frå heile verden

Legg innav iwonamo » 07 des 2014, 16:26

Common water rat (Hydromys chrysogaster)

Denne karen kan ein finne i Australia, og New Guinea.
Vekt: 650 - 1250 g
Lengde: Kropp: 29 - 39 cm
hale: 23 - 33 cm

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Bilde

Kilder: http://www.arkive.org/common-water-rat/ ... 39105.html
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Re: Rottearter frå heile verden

Legg innav iwonamo » 08 des 2014, 02:08

Er det ingen her som synst at dette her er interessant? :goofy:
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Re: Rottearter frå heile verden

Legg innav iwonamo » 08 des 2014, 02:16

Black rat (Rattus rattus)


Kroppslengde : 16-24 cm
Halelengde: 18-26 cm
Vekt: 150-250 g

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Black rat description
Also known as the ship rat, the black rat (Rattus rattus) was introduced to Britain with the Romans. Generally smaller than the brown rat (Rattus norvegicus), the black rat is typically a uniform black to tawny brown colour, with lighter underparts. The tail, which is longer than the head and body, is hairless, and is used for Balance.

Black rat biology

The black rat is nocturnal, although it may become more active in the day in undisturbed areas (4). It is an omnivore, but tends to prefer plant matter (4) such as fruits and seeds, although it will also feed on insects, carrion, refuse and faeces (2). On Lundy Island these rats feed on crabs along the shore (4). This rat lives in groups called 'packs', consisting of several males and two or more dominant females (4). They are skilled climbers and can also swim well (2). Nests are constructed from grass and twigs, often in roof spaces, a habit which earned the species the further common name of 'roof rat' (2).


Black rat range:
This species was once widespread throughout Britain until the brown rat was introduced (4). The black rat originates from Asia, and today is widely distributed around the globe (4). It has been restricted to largely transient populations in Southwark, London and Avonmouth since 1884, and has undergone a drastic decline in range since the 1950s (4). It also persists on Lundy Island in the Bristol Channel and the Shaint Islands in the Outer Hebrides (4).


Breeding takes place between March and November; three to five litters can be produced in a year, each litter containing 1 to 16 young (although the average is seven). A single female can therefore produce a huge number of offspring; 56 young were recorded on a London ship for a single female (4). At 12 to 16 weeks of age, females are capable of breeding; they are also able to conceive whilst still suckling the previous litter, which further maximises their reproductive capability (1). Maximum lifespan in the wild is less than 18 months; populations have very high mortality rates, mainly as a result of widespread pest control measures (4). The black rat is a notorious pest, and was the host of the fleas that carried bubonic plague (2). It also carries a host of other diseases and is damaging to property and food stores .

Kilde: http://www.arkive.org/black-rat/rattus- ... 15115.html
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Re: Rottearter frå heile verden

Legg innav iwonamo » 08 des 2014, 02:46

Syns at han her er rett og slett nydelig :cheer:
iwonamo skrev:Painted tree rat (Callistomys pictus)

Bilde

With a total length of ca. 30 cm (12 in), it is a relatively large species of spiny rat. It is white with a strongly contrasting glossy-black cap, back and band down towards its forelimbs. Its long fur is dense and coarse, but not spiny, as in some other members of its family. Specimens often have brown (rather than black) markings, but as far as it's known this is caused by fading and does not occur in the living animals.

Owing to its striking black-and-white pelage, it is virtually unmistakable, but could perhaps be confused with a hairy dwarf porcupine (Sphiggurus sp.) – all of which have spines and lack the distinctive pattern of the painted tree-rat.

Found in Atlantic forest. Also in cocoa plantations where some native trees remain. As far as known, it is nocturnal.

Geographical range: Restricted to north-eastern Bahia (often misquoted as S. Bahia) in eastern Brazil.
http://en.wikipedia.org/wiki/Painted_tree-rat
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Re: Rottearter frå heile verden

Legg innav iwonamo » 08 des 2014, 04:26

"Til lags åt alle kan ingen gjera."

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Re: Rottearter frå heile verden

Legg innav iwonamo » 08 des 2014, 04:32

Sahyadris forest rat (Rattus satarae)

Denne her kan me finne i India.
http://en.wikipedia.org/wiki/Sahyadris_forest_rat

Bilde
Sist redigert av iwonamo den 08 des 2014, 04:43, redigert 3 ganger totalt.
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Re: Rottearter frå heile verden

Legg innav iwonamo » 08 des 2014, 04:38

Big-headed mole rat (Tachyoryctes macrocephalus)

Og denne her bur i Afrika
http://en.wikipedia.org/wiki/Big-headed_mole-rat

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Re: Rottearter frå heile verden

Legg innav iwonamo » 08 des 2014, 04:55

Southern giant slender-tailed cloud rat (Phloeomys cumingi)

Vekt : 1.5 – 2 kg
Ttotal lengde opptil 75 cm
Finst på Filippinene

Bilde

Bilde

http://www.arkive.org/southern-giant-sl ... 36648.html
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Re: Rottearter frå heile verden

Legg innav Milla » 08 des 2014, 10:29

Så morsomt å se ! Det finnes masse forskjellige... Spennende ! :cheer:
Ella, River, Moya, Serenity og Lulu <3

Alltid i tankene: Titan, Neon, Kali, Witney,Queen Latifah, Luna,Luthien,Varia,Kosh,ZaHaDum og Josefine

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Re: Rottearter frå heile verden

Legg innav renya » 08 des 2014, 10:50

Big headed mole-rat! :kisses:

Her var det jammen mykje forskjellig, så fascinerande! Fin tråd!
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Re: Rottearter frå heile verden

Legg innav Kesia Madeleine » 08 des 2014, 23:35

Kanontråd! Kjempegøy og interessant :D
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<3 Levi, Titus, Tiras og Akira <3

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Re: Rottearter frå heile verden

Legg innav Marit Fosen » 09 des 2014, 00:15

Afrikansk pungrotte, brukt som minesøker og til testing av tuberkulinprøver. En svært lettlært rotte. Den egner seg ikke som kjæledyr selvom den brukes til det i andre land, deriblandt Danmark, ikke tillatt i Norge. Den er et arbeidsjern som krever veldig mye stimulans, rotteverdenens Border Collie.
http://www.rmca.org/Articles/giant.htm
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