Tag biology

36 bookmarks have this tag.

2024-06-18

1334.

Your brain does not process information and it is not a computer | Aeon Essays

aeon.co/essays/your-brain-does-not-process-information-and-it-is-not-a-computer

Your brain does not process information, retrieve knowledge or store memories. In short: your brain is not a computer

2024-06-13

1315.

Synapsida

synapsida.blogspot.com

2024-05-06

1244.

Scientists uncover evidence for a new form of collective sensing in electric elephantnose fish

phys.org/news/2024-03-scientists-uncover-evidence-electric-elephantnose.html

It would be a game-changer if all members of a basketball team could see out of each other's eyes in addition to their own. A research duo at Columbia's Zuckerman Institute has found evidence that this kind of collective sensing occurs in close-knit groups of African weakly electric fish, also known as elephantnose fish. This instantaneous sharing of sensory intelligence could help the fish locate food, friends and foes.

1243.

Study: Butterfly and Moth Genomes Have Remained Largely Intact through 250M Years of Evolution | Sci.News

www.sci.news/genetics/lepidopteran-genomes-12718.html

This stability exists despite the incredible diversity seen today in wing patterns, sizes, and caterpillar forms across over 160,000 species globally, according to a new paper published in the journal Nature Ecology and Evolution.

It is rather like how fish can stay in the same place in a flowing river. They have to swim against the current. Similarly, in the absence of evolution, the genome would degrade due to accumulated mutations. Natural selection constantly selects against non-adaptive mutations. The genome of a creature which is as well adapted as it can be for a particular environment does not change because it cannot be better adapted than it already is.

2024-05-01

Reposted 1235.

«Баян или классика?»: ученые обнаружили чувство юмора у обезьян

mbradio.ru/publication/5102

Оказывается, мы умеем шутить уже 13 миллионов лет

2024-02-27

1156.

OpenWorm

openworm.org

OpenWorm is an open source project dedicated to creating a virtual C. elegans nematode in a computer.

Червя оцифровали 😳

Via Merlin

2024-02-26

1155.

Теменной глаз — Википедия

ru.wikipedia.org/wiki/Теменной_глаз
1154.

Красные пики про трёхглазую игуану

t.me/red_spades/1114

Есть игуана с глазом на затылке! А это, оказывается, тема распространённая так-то. Называется теменной глаз.

2024-01-26

1076.

I discovered a tiny frog that lives its whole life inside one plant

www.theguardian.com/environment/2024/jan/25/tiny-frog-lives-whole-life-inside-one-plant-brazilian-mountain-aoe

Everyone told me there is no water on top of this Brazilian mountain, there won’t be any frogs. Now I’ve dedicated my life to preserving this incredible species

2024-01-21

1071.

Barcoding bees - The Apiarist

theapiarist.org/barcoding-bees

Scientist labeled a colony of bees with QR codes and observed what happened. Turned out, information flow in the colony is pretty effective, it's not just random. Also I learned of trophallaxis.

2024-01-20

1064.

Topic Challenge: The Social Lives of Bees - Björn Wärmedal

warmedal.se/~bjorn/posts/2021-10-06-topic-challenge-the-social-lives-of-bees.html

bees

2024-01-11

1032.

Top Fossil discoveries of 2023

paleonerdish.wordpress.com/2023/12/31/top-fossil-discoveries-of-2023

It's about dinosaurs, not VCS.

2024-01-06

1016.

Flowers ‘giving up’ on scarce insects and evolving to self-pollinate, say scientists

www.theguardian.com/environment/2023/dec/20/flowers-giving-up-on-scarce-insects-and-evolving-to-self-pollinate-say-scientists

French wild pansies are producing smaller flowers and less nectar than 20 to 30 years ago in ‘startling’ act of evolution, study shows

2023-12-06

960.

Project CETI

www.projectceti.org

CETI is a nonprofit organization applying advanced machine learning and state-of-the-art robotics to listen to and translate the communication of sperm whales.

2023-11-25

915.

The role of cat eye narrowing movements in cat–human communication - Scientific Reports

www.nature.com/articles/s41598-020-73426-0

Domestic animals are sensitive to human cues that facilitate inter-specific communication, including cues to emotional state. The eyes are important in signalling emotions, with the act of narrowing the eyes appearing to be associated with positive emotional communication in a range of species. This study examines the communicatory significance of a widely reported cat behaviour that involves eye narrowing, referred to as the slow blink sequence. Slow blink sequences typically involve a series of half-blinks followed by either a prolonged eye narrow or an eye closure. Our first experiment revealed that cat half-blinks and eye narrowing occurred more frequently in response to owners’ slow blink stimuli towards their cats (compared to no owner–cat interaction). In a second experiment, this time where an experimenter provided the slow blink stimulus, cats had a higher propensity to approach the experimenter after a slow blink interaction than when they had adopted a neutral expression. Collectively, our results suggest that slow blink sequences may function as a form of positive emotional communication between cats and humans.

2023-11-14

861.

Spider-web research yields … a new musical instrument? | Oregon Field Guide - YouTube

youtu.be/bUQ6CuPMnGQ

CW: spiders

Web-inspired harp-like music instrument. Cool!

2023-10-14

747.

How Glass Frogs Weave the World’s Best Invisibility Cloak

www.theatlantic.com/science/archive/2022/12/glass-frogs-transparent-arboreal-amphibians-disguise/672551

Glass frogs move all their blood to their liver at night to become almost invisible. Cute!

2023-09-24

640.

Rylands BlogElephants and Mahouts in Persianate South Asia

rylandscollections.com/2023/08/12/elephants-and-mahouts-in-persianate-south-asia

2023-08-13

565.

Nature for Nerds

www.datagubbe.se/nerdnat

In a city, you can find harvestable plants if you look hard enough. This is true. In Ufa, I've seen apple trees, for example. The author invites readers to learn more about it. Maybe I will.

2023-07-15

468.

Проект CETI — декодинг «языка» кашалотов

habr.com/ru/companies/vdsina/articles/554958

В 2016 году океанологи впервые обнаружили и записали то, как кашалоты общаются друг с другом, используя своеобразную ультразвуковую речь из коротких и длинных ритмично повторяющихся щелчков (кодов), напоминающих сигналы азбуки Морзе. Им удалось обнаружить, что кашалоты общаются друг с другом тэт-а-тэт, в формате диалога между двумя особями. До этого биологи считали, что эти киты используют групповые формы общения, что «диалекты» их языка различаются по группам, и одинаковые для их членов. Но оказалось, что каждый кит общается с товарищами на собственном «сленге». Учёные планируют использовать машинное обучение, чтобы попытаться расшифровать то, что эти животные «говорят» друг другу. Если люди когда-либо расшифруют язык китов или даже определят, обладают ли киты тем, что мы действительно можем назвать языком, нам нужно будет наделить их щелчки контекстом. Результатом расшифровки общения китов будет знание того, кем являются эти одни из самых загадочных существ Земли.

467.

Urban Fish Ponds: Low-tech Sewage Treatment for Towns and Cities

solar.lowtechmagazine.com/2021/03/urban-fish-ponds-low-tech-sewage-treatment-for-towns-and-cities

Крутая статья про то, как используют рыб для sustainable и low-tech переработки человеческих отходов.

466.

Башкирский ярус (Bashkirian)

ammonit.ru/geochrono/609.htm

Башкирский ярус (Bashkirian) соответствует башкирскому веку среднего карбона (и нижней пенсильванской эпохе согласно международной стратиграфической шкале). Башкирский век начался 318.1 ± 1.3 и закончился 311.7 ± 1.1 млн. лет назад.

Я из Башкортостана!!

465.

Ученые случайно обнаружили колонию странных существ подо льдом Антарктиды

habr.com/ru/articles/543554

Животные, обнаруженные под льдами Антарктиды, ведут оседлый образ жизни, они не способны передвигаться с места на место. Обычно чтобы такие создания смогли жить глубоко на океанском дне, им нужны стабильные запасы пищи в виде «морского снега». Все живые существа, плавающие в километрах воды наверху, однажды умирают, и со временем тонут. Их частицы, которые не достались никому более прожорливому, со временем добираются до дна.

464.

Interspecies Internet

www.interspecies.io

Interspecies Internet is a think-tank to accelerate our understanding of interspecies communication.

Не очень понятно, что они сделали уже, надо разобраться. Тема интересная.

2023-07-12

446.

Shrinking Bee Populations Are Being Replaced by Human Pollinators

www.globalcitizen.org/en/content/life-without-bees-hand-human-pollination-rural-chi

Paying human pollinators is cheaper than renting bees in areas with no bees.

2023-07-07

432.

Красные ночные палитры интерфейсов

protraktor.design/ru/2023/07/05/red-night-palettes

Если делать дизайн только из красного света, то глаза не будут терять ночное видение, потому что ночные палочки не замечают красный свет. Так-то толку от этого мало, но в некоторых случаях супер-полезно. Например, морякам и астрономам.

2023-07-06

430.

r/aliens - From the late 2000s to the mid-2010s, I worked as a molecular biologist...

www.reddit.com/r/aliens/comments/14rp7w9/from_the_late_2000s_to_the_mid2010s_i_worked_as_a

A fun read.

2023-06-01

275.

No A/C? No problem, if buildings copy networked tunnels of termite mounds

arstechnica.com/science/2023/05/intricate-tunnels-of-termite-mounds-could-be-key-to-energy-efficient-buildings

Inspired by termits, we might develop a cool energy-effective cooling and heating system. Look at the pictures too.

2023-05-24

258.

Digital encoding. Legacy software. Evolution.

250bpm.com/blog:89

We’ve finally got to the point in the software world where no big changes are possible. Every change breaks something, introduces backward incompatibilities and so on. More are more we are going to live in the world where software mutates gradually, advancing is small steps without much plan and intelligent design. Similarly to how organisms are dragged by natural selection, it is going to be propelled in unknown direction without asking us whether we like it or not.

The software industry is reaching the stage where it cannot be revolutionized heavily, it is to evolve like the living ones. It is not necessarily good.

2023-04-11

159.

Humans Were Actually Apex Predators For 2 Million Years, New Study Finds

www.sciencealert.com/real-paleo-diets-may-have-been-far-more-carnivorous-than-anything-we-d-eat-today

Paleolithic cuisine was anything but lean and green, according to a recent study on the diets of our Pleistocene ancestors.

157.

Octopus punches fish in the head (just because it can) | Live Science

www.livescience.com/octopuses-punch-fish.html
156.

Идея эволюции Дарвина: творчество, мысли, правило: VIKENT.RU

vikent.ru/author/210

«Уезжая в Великое Плаванье, Дарвин захватил с собой и недавно вышедший первый том «Основ геологии» крупного английского геолога Чарлза Лайеля (1797-1875), который, в противовес господствовавшей в то время теории катастроф, одним из первых пытался установить медленное, эволюционное развитие земной коры, происходящее под действием всё тех же вечных, так считал Лайель, факторов (атмосферные осадки, текучие воды, морские приливы и отливы, извержения вулканов, землетрясения и т. д.), какие незаметно для человеческого глаза неуклонно видоизменяют (малое творит БОЛЬШОЕ) лик земли.

Эта книга произвела на Дарвина большое впечатление. В университетские годы он нисколько не сомневался в правильности основной церковной догмы (Библия, стих I: «Вначале сотворил Бог небо и землю» и так далее) или её вариантов (в какой-то момент Бог разочаровался в созданных им существах и ниспослал на их головы катастрофы, чтобы уничтожить всё живое и начать всё сначала). Однако теперь, воочию наблюдая во время многочисленных высадок на южно-американский континент природу этих далёких от Англии краёв, его начали брать сомнения. Он постепенно убеждался, что «ваять» природу, видимо, могут не только сверхъестественные божественные силы, но и действующие в продолжение гигантских промежутков времени (миллионы лет казались при Дарвине сроками фантастически большими, теперь счет идет уже на миллиарды) силы ничтожные.

155.

Canadian Wetland Classification System — Wetland Policy

www.wetlandpolicy.ca/canadian-wetland-classification-system

The Canadian Wetland Classification System (National Wetlands Working Group 1997) is based on a hierarchical system, which includes (1) wetland class, (2) wetland form and (3) wetland type. The five wetland "classes" are differentiated by their developmental characteristics and the environment in which they exist. The five classes are: bog, fen, marsh, swamp, and shallow water. Some wetlands accumulate peat (partially-decomposed organic matter) and are called peatlands. Bogs and fens are the dominant peatland classes in Alberta, although some swamps and marshes can also accumulate peat. In contrast, shallow open water wetlands and many marshes and swamps do not accumulate peat.

154.

Spider Uses Its Web Like a Giant Engineered Ear | The Scientist Magazine®

www.the-scientist.com/news-opinion/spider-uses-its-web-like-a-giant-engineered-ear-69366

The bridge spider uses its web as an engineered “external ear” up to 10,000 times the size of its body, according to a preprint study posted to bioRxiv on October 18. The discovery, which has not yet been peer reviewed, challenges many assumptions that scientists have held for years about how spiders and potentially other arthropods navigate and interact with the world around them.

“Evolutionarily speaking, spiders are just weird animals,” Jessica Petko, a Pennsylvania State University York biologist who didn’t work on the new study, writes in an email to The Scientist. “While it has been long known that spiders sense sound vibration with sensory hairs on their legs, this paper is the first to show that orb weaving spiders can amplify this sound by building specialized web structures.”

153.

‘If it’s alive, it sleeps.’ Brainless creatures shed light on why we slumber | Science | AAAS

www.science.org/content/article/if-alive-sleeps-brainless-creatures-shed-light-why-we-slumber

But others in the field are pushing for a much more inclusive view: that sleep evolved not with modern vertebrates as previously assumed, but perhaps a half-billion years ago when the first animals appeared. “I think if it’s alive, it sleeps,” says Paul Shaw, a neuroscientist from Washington University in St. Louis. The earliest life forms were unresponsive until they evolved ways to react to their environment, he suggests, and sleep is a return to the default state. “I think we didn’t evolve sleep, we evolved wakefulness.”

152.

The Insidious Magic of Cats - Björn Wärmedal

warmedal.se/~bjorn/posts/2021-09-29-the-insidious-magic-of-cats.html

Our neighbour is quite happy about him having a safe haven from the other cats. When he was bullied so much that he wasn't even left alone to eat in peace she gave us cat food to give him. Nowadays we just buy our own. I don't know if he ever eats there any more, but he surely eats at our house every single day.