Thylacinus cynocephalus, Greek for "dog-headed pouched one", was the largest
known carnivorous marsupial of modern times. It is commonly known as the
Tasmanian tiger (because of its striped back) or the Tasmanian wolf. Native to
continental Australia, Tasmania and New Guinea, it is thought to have become
extinct in the 20th century. It was the last extant member of its family, Thylacinidae;
specimens of other members of the family have been found in the fossil record
dating back to the early Miocene.
Despite its official classification as extinct, sightings are still reported, though none
has been conclusively proven.
The thylacine was one of only two marsupials to have
a pouch in both sexes (the other being the water opossum). The male thylacine had
a pouch that acted as a protective sheath, covering the male's external reproductive
organs while he ran through thick brush. It has been described as a formidable predator
because of its ability to survive and hunt prey in extremely sparsely populated areas.
This shows the freshwater green alga Volvox globator. Many individual cells
live together forming a beautiful spherical colony. Some of them are specialized
for reproduction.
"Living nature is the best teacher and pedagogue; an artistic medium of
representation tries to replace nature and this can be possible in
practice only
if the images are true to natural objects."
Perth Zoo has managed to breed two baby echidnas (known as puggles). Only
24 puggles have been successfully born in captivity, and these new-borns
represent the first successful breeding of zoo born echidnas.
Breeding echnidnas
is notoriously difficult so the information gathered from these infants as they
grow will be vital in learning more about the reproduction of this species.
A newly discovered Aphodiine Scarab from Cambodia is a stunning example
of how natural selection helps this termitophilic beetle adapt and find an easier
path to a meal.
The beetle not only tricks a colony of termites into granting it access to their
stock pile of food by reproducing the scent of that food themselves, it also
entices the termite to actually carry it directly to the food using the perfectly
sculpted handle on it's back.
The Orchid Mantis is a mantis from Malaysia, Indonesian, and Sumatran rain forests.
This species is characterized by brilliant and beautiful coloring and unusual structure; their four walking legs resemble flower petals, and the coloration of the bodies tends to match the environment in which they were raised.
The male Darwin’s frog broods tadpoles in its mouth. They tend to get frisky
as children often do. He carries them around until they develop into froglets
and hop out of his mouth.
On August 31, 2012 a long filament of solar material that had been hovering
in the sun’s atmosphere, the corona, erupted out into space at 4:36 p.m. EDT.
The coronal mass ejection, or CME, traveled at over 900 miles per second.
The CME did not travel directly toward Earth, but did connect with Earth’s
magnetic environment, or magnetosphere, causing aurora to appear on the night
of Monday, September 3. The incredible image above is a lighten blended
version of the 304 and 171 angstrom wavelengths.
The proboscis monkey (Nasalis larvatus) or long-nosed monkey, known as the bekantan in Malay, is a reddish-brown arboreal Old World monkey that is endemic to the south-east Asian island of Borneo.
The monkey also goes by the Malay name monyet belanda ("Dutch monkey"), or even orang belanda ("Dutchman"), as Indonesians remarked that the Dutch colonisers often had a similarly large belly and nose.
These recently hatched lynx spiders were imaged by Walter Piorkowski of South Beloit, Illinois.
Geir Drange from Norway captured this ant carrying its larva.
In news that shouldn't surprise anyone who finds them so irresistible, paleontologists are now claiming that the earliest dinosaurs to develop feathers did so for courtship purposes and not to soar like giant, sexy eagles.
"They may have initially evolved as a secondary sexual characteristic," says a paper published Thursday in the prestigious journal Science.
"Because they're in these large dinosaurs, (wings) haven't evolved for flight," Zelenitsky says. "(And) because these wing-like structures develop later in life, that suggests they were used for purposes like display or courtship or egg-brooding."
Amphioctopus marginatus, also known as the "coconut octopus" or "veined octopus",
is a medium-sized cephalopod belonging to the genus Amphioctopus. It is found in
tropical waters of the western Pacific Ocean. It commonly preys upon shrimp, crabs,
and clams, and displays unusual behaviour, including bipedal walking and gathering
and using coconut shells and seashells for shelter. Source: Wikipedia
The main body of the octopus is typically around 8 centimeters (3 in) in size, and, with
arms, approximately 15 centimeters (6 in) long. In this amazing capture by photographer Mario Neumann, the contrast of the white suckers to the rest of the octopus and sea
floor makes it look like some kind of alien spaceship.
Tuesday, October 16, 2012
The defenceless newborns sitting under the vicious sting are the scorpion's own
offspring, tended by their mother until they are big enough to survive on their own.
Unlike most other arachnids they are viviparous: rather than laying eggs they give
birth to live young. The juveniles are unable to feed or defend themselves, or
regulate their moisture levels - they need their mother's protection.
The caterpillar of the Imperial Fruit Sucking Moth (Phyllodes imperialis). The moth is of the Noctuidae family. The species can be found in north-eastern Queensland to northern New South Wales, Papua New Guinea, Solomons, Vanuatu and New Caledonia.
It's menacing head and intricate markings are meant to thwart would be predators. In it's adult incarnation, the moth has vibrant pink under-wings, but most significantly, an impressive cryptic design capacity to transform itself into a thoroughly convincing dead leaf.
Wednesday, October 10, 2012
"Fingal's Cave is a sea cave on the uninhabited island of Staffa, in the Inner Hebrides of Scotland, part of a National Nature Reserve owned by the National Trust for Scotland. It is formed entirely from hexagonally jointed basalt columns within a Paleocene lava flow.
Cooling on the upper and lower surfaces of the solidified lava resulted in contraction and fracturing, starting in a blocky tetragonal pattern and transitioning to a regular hexagonal fracture pattern with fractures perpendicular to the cooling surfaces. As cooling continued these cracks gradually extended toward the centre of the flow, forming the long hexagonal columns we see in the wave eroded cross-section today. Similar hexagonal fracture patterns are found in desiccation cracks in mud where contraction is due to loss of water instead of cooling."
Taken at the Motswari Private Game Reserve in South Africa, we see two lionesses having a drink at a watering hole. On the right is a rare white lion from the Xakubasa Pride. The photograph was taken by the park’s ranger Chad Cocking.
Open to the Kruger National Park and playing host to Africa’s Big Five, the family-owned and operated Motswari Private Game Reserve is one of South Africa’s jewels nestled within the Timbavati Nature Reserve.
The Bleeding Tooth fungus, or Hydnellum pecki, is found in pine forests of the
American Pacific northwest and central Europe. It's also known by the names
'Devil's Tooth' or 'Strawberries and Creme'. Ironically, their oozing 'blood' actually
contains an anticoagulant called atromentrin.
The Blue-footed Booby (Sula nebouxii) is a bird in the Sulidae family which comprises ten species of long-winged seabirds. The natural breeding habitat of the Blue-footed Booby is tropical and subtropical islands of the Pacific Ocean, most famously, the Galápagos Islands, Ecuador.
The courtship of the Blue-footed Booby consists of the male flaunting his blue feet and dancing to impress the female. During the dance, the male will spread his wings and stamp his feet on the ground.
Professor Ulmar Grafe noticed that Hardwicke's woolly bats were regularly roosting in Nepenthes hemsleyana pitcher plants in Brunei (on the tropical island of Borneo).
The benefits for the bats appears quite obvious, as this particular species of pitcher plant has a very low level of digestive fluid, meaning the bats can safely roost in an environment sheltered from predators and without fear of being eaten by enzymes.
Pitcher plants typically grow in areas where the soil is very nitrogen depleted, hence their reliance on a carnivorous life style.
Under further investigation Grafe found that the plants gained 33% of their nitrogen not from feeding on insects but from the droppings of the bats, showing strong evidence for an intriguing case of mutualism.
'Glass frog' is the common name of frogs in
the amphibian family Centrolenidae. There are many species, and they are
found throughout Central and South America. As you can probably
guess. their name comes from the obvious fact that many of the members
of this family have translucent skin. Many internal organs including the
heart, liver and gastrointestinal tract are visible.
Chimeraism is a condition in which two separate zygotes fuse together to form one organism. The resulting animal has two different sets of DNA (unless the zygotes that fused were identical twins). Occasionally, this causes mosaicism - when different phenotypes are expressed in different areas.
The problem with chimerasism is that it's impossible to confirm without genetic testing, as is the case with the peacock pictured here. It's been doing the rounds on forums for years, and always causes a lot of debate. Some claim that it's a case of co-dominance, others argue that we're looking at a chimera. Without genetic tests, it's impossible to say for sure.
A common question that was asked on our last post on chimeraism was - are there any human chimeras around? The answer is a resounding yes - and it's a hell of a lot more common than you might think. Although you occasionally get some spectacular colour patterns on chimeras like those pictured, most of the time you'd never be able to tell by looking.
The British Medical Journal first reported a human chimera in 1953. A woman was found who had two different blood types - investigation found that this was the result of cells from her twin brother living within her body. A study published 1998 (available free online, found here: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.149.9001&rep=rep1&type=pdf found that this sort of blood group chimeraism is actually fairly common.
"The stunning image of the species was captured at the Andasibe-Mantadia National Park in Madagascar.
Satanic leaf-tailed geckos (Uroplatus phantasticus) can reach a total of length of 9cm, and its range is in the central eastern side of the African island."
Gecko vs. Lizard:
Lizards are reptiles of the order Squamata, normally possessing four legs, external ear openings and movable eyelids. Geckos are small to average sized lizards belonging to the family Gekkonidae which are found in warm climates throughout the world. Geckos differ from other lizards in terms of their living conditions, physical charateristics and their eating habits