29 novembre ore 21.00 a Milano
Compagni di viaggio - la domesticazione degli animali
con Stefano Papi, paleobiologo, divulgatore scientifico e collaboratore del Museo di Storia Naturale di Milano.
Sono con noi in alcuni casi da migliaia di anni. Ci aiutano nei lavori pesanti, ci hanno trasportati per tutto il mondo, ci danno cibo, fibre tessili, compagnia. E questi sono solo alcuni dei vantaggi che l'uomo ha avuto addomesticando gli animali. Ma loro cosa ci hanno guadagnato? E come sono dovuti cambiare per adattarsi alla nostra specie? Insomma, chi gliel'ha fatto fare!? Alla scoperta di tanti diversi casi di animali, dalla mucca al cane, dal cavallo alla volpe, che hanno deciso di accompagnarci nel lungo viaggio della storia.
INGRESSO GRATUITO CON PRENOTAZIONE OBBLIGATORIA al link: http://bit.ly/RazionaleMIL06
Today's drawing is Spinosaurus aegyptiacus! This is one of the largest species of theropod known, living during the Late Cretaceous period in what is now Egypt and other parts of northern Africa. This animal is best known for its enigmatic sail on its back, which may have served many purposes.
The sail of this animal, reaching 2 metres tall at the longest vertebrae, would have likely been a signature of sexual maturity, with infants lacking the structure, and it would grow as the animal aged. Spinosaurus was semiaquatic as indicated by its physiology, and this sail could have had some function in hydrodynamics, helping the animal stay stable in the water. It could have also been used similarily to how modern herons use their wings to hunt - the shadow cast by their wings attracts fish, making hunting easier. This sail could have also been used to store nutrients for times of hardship, as well as function as a sort of thermoregulatory structure (though unlikely), and as a display structure.
The anatomy of Spinosaurus is not very well known due to the fragmentary nature of remains. It has been proposed there be 2 species of Spinosaurus based on remains, and perhaps even a third if you lump Sigilmassasaurus. One of the most popular palaeontological memes was the quadrupedal spinosaurus from 2014 - this view was never broadly accepted in the scientific community, and was extremely inaccurate. The animals limbs were not scaled proportianate to the body, and the wrists could never withstand the weight of the animal. Spinosaurus hunted large fishes and sharks, and could have scavenged on dinosaur carcasses, and could have possibly tackled small pliosaurs which travelled through its Cretaceous estuary home.
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I’m heartbroken and devastated to post this. The tarantula who started it all has passed away. My love of invertebrates began when I bought Tiktaalik (Taali). When I bought her, I had people call me disgusting and gross for having a spider in my house, but I pity their ignorance now, as this little spider was a sweetheart, and opened me up to a whole world of fascinating animals that I’d previously overlooked.
Taali had been a challenge to care for, her species definitely aren’t for beginners. I was struggling to replicate the temperature and humidity of a tropical Queensland rainforest, where her species come from, but other tarantula keepers assured me I’d be fine, and that she’d eat more and grow when the weather warms up. I can’t be sure, but it looks like my little Taali was trying to moult, and died very early on in the process. I was so attached to this spider, it’s not going to be the same without her. Rest In Peace Taali❤️🕷
With another recent sighting being investigated, and reputable sightings on the rise, the South Island Kōkako may soon return from the dead just as the Takahē did in 1948. Constantly wishing I had more spare time to be out on the hunt 🔎
Ink by: @rey.jasper 🖋🐦
We might feel AESTHETIC APPRECIATION when we see something really beautiful, like a flamingo 💖 The flamingo in this video might make you feel INTEREST as you wonder what it is doing 🤷🏽♂️ Flamingos stomp 🐾 their webbed feet in the sand to push food up to the surface of the water 🦐 We feel INTEREST when we wonder about how things work 👩🏻🔬
I'm currently taking a zoology module, which includes a dissection practical. Last week we dissected Mytilus edilus, commonly known as blue mussel, as an example for molluscs. I took some pictures of the preparation and I wanted to share them with you 😊 🐚 In the first picture you can see the preparation of the left mussel valve (shell). The right part of the mantle and gills have been flipped to show the inner organs. 🐚 The second picture shows parts of the mouth. Mussels are filter feeders, using gills to capture nutritious particles from the water. After filtering particles from the water throughout their admission port and gills, they whirl nutritious particles into their mouth and to the digestive system. This flow of water also allows respiration, as Mytilus draws oxygen from the water. As filter feeders, marine mussels play an important role in the ocean's ecosystem, because they quite literally clear seawater - and a single mussel filters 2-3 litres per hour! Unfortunately this also means mussels are severely affected by the pollution of our oceans, because they will take in all the pollutants and heavy metals through filtration! 😧 🐚 Easily identified by it's greenish colour, the midgut gland (front part of Mytilus' digestive system) can be seen in the third picture. The midgut gland leads to the stomach, followed by the intestine. 🐚 Despite the adductor muscles, connecting the two valves, Mytilus also has a so called foot, which can be seen in the fourth picture. Mytilus can thrust out it's foot, a retractor muscle, which is quite essential for the mussels' mobility. 🐚 The last picture shows the byssus, which excretes the byssus filaments (byssus threads). They are used by mussels to attach themselves to surfaces (for example rocks). Unfortunately my preparation had no byssus filaments 😟 But if you have seen blue mussels before (or maybe eaten them), you might remember their beard-like threats - the byssus filaments 😁
Meet the Saddles In Service Team! Kirby Tolch is Board Chairman and has been with us from the founding of Saddles In Service. Kirby is a native of Effingham, Illinois and graduated from Southern Illinois University at Carbondale in 1997 with a Masters in Zoology. He earned his commission from Officer Candidate School in 1997 and served in the Navy 21 years, retiring as a Navy Commander in 2018. Kirby completed multiple combat zone deployments both afloat and ashore conducting sensitive and dynamic operations in support of the Global War on Terror for which he was awarded the Defense Superior Service Medal, two Defense Meritorious Service Medals, and the Meritorious Service Medal along with a multitude of other personal and unit awards.
He is proud of the work Michael (co-founder and Ranch Foremen) and Tammy (co-founder and CEO) are doing with Saddles in Service and considers them not only his closest friends, but also his family. It is his honor to give back to our Heroes who are veterans, active duty military, law enforcement, first responders and their families. He knows what it means to serve and has made great connections with our Heroes. Want to learn more? Saddle Up and contact Kirby today! email@example.com @kirbytolch @thisissiu @siuceqteam @cardinals #siucarbondale#officercandidateschool#saddleup#saddlesinservice4heroes#illinois#zoologist#zoology#usnavy#navy#america
Found only in the deciduous forests of Northern America is one of the worlds most iconic singing insects. The Northern katydid, Pterophylla camellifolia. It's the species that has branded all insects in the family Tettigoniidae as katydids. This species can be distinguished at night by songs usually comprised of 2–3 harsh pulses delivered at a timely manner. ch-ch . . . ch-ch-ch , which is commonly linked to "Ka ty did". The insect makes this noise by rubbing its wings and creating a resonance chamber. The body chamber intensifies the loudness of their calls. Their songs are loudest at 3–5 kHz, but they can surpass 20 kHz. Throughout the night their songs can be heard and males will usually synchronize their songs into two alternating groups. This is so Multiple males in the same area can call a female without being drowned out by other animal noises. Once the female has found and mated with a male she will search for a place to lay eggs. Since these insects are flightless they will commonly be seen crawling around roads or large buildings looking for places to lay eggs or mate. The female lays her eggs by inserting them into loose bark or into the young stems of trees through a body part called an ovipositor. These eggs will then go through diapause, a cold period, and hatch in spring with only one brood per year. FUNFACT!!?!?! The rubbing of body parts to create noise is called stridulation. Many insects use stridulation to communicate. With the northern katydid there are three different populations which all have different stridulation patterns!!?! #Bugs#bug#Insect#Entomology#BigBug#Greenbug#Arthropod#Invertebrate#zoology#Animal#katydid#Pterophyllacamellifolia#Pterophylla#camellifolia#Biology#Life#iphonesia and last but not least #BugsNotDrugs
Picked up two Phyllobates terribilis locally. Wild specimens contain enough poison to kill 10-20 humans, though captive bred individuals are non toxic. Currently they are in a quarantine tank for another 1-2 weeks while our terrarium finishes cycling and to give the ground cover enough time to root and become a bit more robust. Once the terrarium is firmly established they will be introduced into their permanent enclosure