The Deers Ears

icantbelieveitsnotscifi:

The structure of an animal cell

icantbelieveitsnotscifi:

The structure of an animal cell

(via molecularlifesciences)

spaceplasma:

Titan’s Atmosphere

Titan is the largest moon of Saturn. It is the only natural satellite known to have a dense atmosphere, and the only object other than Earth for which clear evidence of stable bodies of surface liquid has been found

Titan is primarily composed of water ice and rocky material. Much as with Venus prior to the Space Age, the dense, opaque atmosphere prevented understanding of Titan’s surface until new information accumulated with the arrival of the Cassini–Huygens mission in 2004, including the discovery of liquid hydrocarbon lakes in Titan’s polar regions.

The atmosphere is largely nitrogen; minor components lead to the formation of methane and ethane clouds and nitrogen-rich organic smog. Titan’s lower gravity means that its atmosphere is far more extended than Earth’s and about 1.19 times as massive. It supports opaque haze layers that block most visible light from the Sun and other sources and renders Titan’s surface features obscure. Atmospheric methane creates a greenhouse effect on Titan’s surface, without which Titan would be far colder. Conversely, haze in Titan’s atmosphere contributes to an anti-greenhouse effect by reflecting sunlight back into space, cancelling a portion of the greenhouse effect warming and making its surface significantly colder than its upper atmosphere.

Titan’s clouds, probably composed of methane, ethane or other simple organics, are scattered and variable, punctuating the overall haze.The findings of the Huygens probe indicate that Titan’s atmosphere periodically rains liquid methane and other organic compounds onto its surface. Clouds typically cover 1% of Titan’s disk, though outburst events have been observed in which the cloud cover rapidly expands to as much as 8%. One hypothesis asserts that the southern clouds are formed when heightened levels of sunlight during the southern summer generate uplift in the atmosphere, resulting in convection. This explanation is complicated by the fact that cloud formation has been observed not only after the southern summer solstice but also during mid-spring.

Image Credit: NASA/JPL/Space Science Institute

(via sagansense)

libutron:

The Tawny Frogmouth conserves its energy entering daily torpor
Living organisms are either ectothermic or endothermic. Ectotherms have low metabolic rates, lack insulation and therefore their body temperature is a function of ambient temperature. Because they do not ‘waste’ energy on internal heat production for thermoregulation, their energy and nutrient requirements are low, but they and their bodily functions are directly affected by the temperature of their environment.
Endotherms, on the other hand, have metabolic rates that are many-fold higher than those of ectotherms and therefore their energy requirements are high. Endotherms usually insulate their bodies to minimize heat loss. 
Endotherms include most mammals and birds. Some species, however, are heterothermic, it is they can switch between ectothermic (or poikilothermic) and endothermic (or homeothermic) strategies to deal with energetic and other challenges, and, during certain times of the day or year, enter a state of torpor.
Mammalian and avian torpor (including hibernation and daily torpor) is characterized by temporal, substantial but controlled reductions in body temperature, metabolic rates, water loss, heart rate and other physiological functions and is the most effective means for energy conservation available to endotherms. 
The Tawny Frogmouth, Podargus strigoides (Caprimulgidae - Podargidae) is an endemic, nocturnal bird species widespread throughout Australia. They are heterotherm and the largest bird know to use torpor. Like Nightjars, Tawny Frogmouths enter daily torpor at night and/or in the early morning. This birds remain torpid for only part of the day, but usually continue to forage during their active phase.
Unlike hibernators, daily heterotherms, such as the Nightjars and the Tawny Frogmouth, always express daily torpor independent of ambient temperature, season and trophic state. Daily torpor lasts only for hours rather than days or weeks, is usually not as deep as hibernation, and is often interrupted by activity and feeding. 
Reference: [1]
Photo credit: ©Peter Nijenhuis | Locality: The Rainforest Habitat Wildlife Sanctuary, Port Douglas, Craiglie, Queensland, Australia

libutron:

The Tawny Frogmouth conserves its energy entering daily torpor

Living organisms are either ectothermic or endothermic. Ectotherms have low metabolic rates, lack insulation and therefore their body temperature is a function of ambient temperature. Because they do not ‘waste’ energy on internal heat production for thermoregulation, their energy and nutrient requirements are low, but they and their bodily functions are directly affected by the temperature of their environment.

Endotherms, on the other hand, have metabolic rates that are many-fold higher than those of ectotherms and therefore their energy requirements are high. Endotherms usually insulate their bodies to minimize heat loss. 

Endotherms include most mammals and birds. Some species, however, are heterothermic, it is they can switch between ectothermic (or poikilothermic) and endothermic (or homeothermic) strategies to deal with energetic and other challenges, and, during certain times of the day or year, enter a state of torpor.

Mammalian and avian torpor (including hibernation and daily torpor) is characterized by temporal, substantial but controlled reductions in body temperature, metabolic rates, water loss, heart rate and other physiological functions and is the most effective means for energy conservation available to endotherms. 

The Tawny Frogmouth, Podargus strigoides (Caprimulgidae - Podargidae) is an endemic, nocturnal bird species widespread throughout Australia. They are heterotherm and the largest bird know to use torpor. Like Nightjars, Tawny Frogmouths enter daily torpor at night and/or in the early morning. This birds remain torpid for only part of the day, but usually continue to forage during their active phase.

Unlike hibernators, daily heterotherms, such as the Nightjars and the Tawny Frogmouth, always express daily torpor independent of ambient temperature, season and trophic state. Daily torpor lasts only for hours rather than days or weeks, is usually not as deep as hibernation, and is often interrupted by activity and feeding. 

Reference: [1]

Photo credit: ©Peter Nijenhuis | Locality: The Rainforest Habitat Wildlife Sanctuary, Port Douglas, Craiglie, Queensland, Australia

(via mindblowingscience)

blackbearsonbathsalts:

Favorite thing in the freezer right now? Probably this leucistic fawn — nicknamed Seneca white deer (because of the famous white heard at the abandoned Seneca army base), the breed is the result of a recessive gene that causes a lack of pigmentation in the hair but not the other symptoms associated with albinism (note the spots). It would grow to be pure white in adulthood. This poor thing was about three weeks old, and lived on a deer farm belonging to a friend and fellow taxidermist. He had a bunch of fawns die recently because of what he has now determined was a bacteria carried by his turkeys that cross-contaminated. If you’ve emailed me about a fawn and I haven’t gotten back to you yet, know that I took some pictures tonight and you should get an email ASAP.

blackbearsonbathsalts:

Favorite thing in the freezer right now? Probably this leucistic fawn — nicknamed Seneca white deer (because of the famous white heard at the abandoned Seneca army base), the breed is the result of a recessive gene that causes a lack of pigmentation in the hair but not the other symptoms associated with albinism (note the spots). It would grow to be pure white in adulthood. This poor thing was about three weeks old, and lived on a deer farm belonging to a friend and fellow taxidermist. He had a bunch of fawns die recently because of what he has now determined was a bacteria carried by his turkeys that cross-contaminated. If you’ve emailed me about a fawn and I haven’t gotten back to you yet, know that I took some pictures tonight and you should get an email ASAP.

(via malformalady)

rhamphotheca:

Giving up beef will reduce carbon footprint more than cars

Study shows red meat dwarfs others for environmental impact, using 28 times more land and 11 times water for pork or chicken

by Damian Carrington

Beef’s environmental impact dwarfs that of other meat including chicken and pork, new research reveals, with one expert saying that eating less red meat would be a better way for people to cut carbon emissions than giving up their cars.

The heavy impact on the environment of meat production was known but the research shows a new scale and scope of damage, particularly for beef. The popular red meat requires 28 times more land to produce than pork or chicken, 11 times more water and results in five times more climate-warming emissions. When compared to staples like potatoes, wheat, and rice, the impact of beef per calorie is even more extreme, requiring 160 times more land and producing 11 times more greenhouse gases…

(read more: The Guardian UK)

photos: Shutterstock and Alamy

(via mindblowingscience)

rhamphotheca:

Bats Can Navigate using Polarized Light
by Sid Perkins
Forget the phrase “blind as a bat.” New experiments suggest that members of one species of these furry flyers—Myotis myotis, the greater mouse-eared bat—can do something no other mammal is known to do: They detect and use polarized light to calibrate their long-distance navigation.
Previous research hinted that these bats reset their magnetic compass each night based on cues visible at sunset, but the particular cue or cues hadn’t been identified. In the new study, researchers placed bats in boxes in which the polarization of light could be controlled and shifted.
After letting the bats experience sundown at a site near their typical roost, the team waited until after midnight (when polarized light was no longer visible in the sky), transported the animals to two sites between 20 and 25 kilometers from the roost, strapped radio tracking devices to them, and then released them…
(read more: Science News/AAAS)
photo by Top-Pics/TBK

rhamphotheca:

Bats Can Navigate using Polarized Light

by Sid Perkins

Forget the phrase “blind as a bat.” New experiments suggest that members of one species of these furry flyers—Myotis myotis, the greater mouse-eared bat—can do something no other mammal is known to do: They detect and use polarized light to calibrate their long-distance navigation.

Previous research hinted that these bats reset their magnetic compass each night based on cues visible at sunset, but the particular cue or cues hadn’t been identified. In the new study, researchers placed bats in boxes in which the polarization of light could be controlled and shifted.

After letting the bats experience sundown at a site near their typical roost, the team waited until after midnight (when polarized light was no longer visible in the sky), transported the animals to two sites between 20 and 25 kilometers from the roost, strapped radio tracking devices to them, and then released them…

(read more: Science News/AAAS)

photo by Top-Pics/TBK

(via mindblowingscience)

“If you have the ability to love, love yourself first.”

—   Charles Bukowski (via yoursecretmadness)

(Source: 31chainz, via temptemptempppp)

biomorphosis:

Raccoon dogs look very similar to raccoons but have no genetic similarities between them. They belong to the Canidae family, which are known to have distinct dog and wolf like characteristics and appearance. These animals are both carnivorous and omnivorous mammals.

They are monogamous and will mate for life. It is only if the mate dies or is killed, will the other search for a new mate. Two mates will hibernate in one den. During this period they will maintain close body contact to keep each other warm and will groom each other as well. This is a trait not practiced by canines, as dogs neither hibernate and nor are they monogamous in nature.

(via shychemist)

mamaredwood:

hey there baby <3

mamaredwood:

hey there baby <3

(via hustleandcuss)