La organización de Aqua Nor confirma su formato híbrido para la edición de este año 2021
Aprocean
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lunes, 31 de mayo de 2021
It has been several months since I last posted some adorable little snails 🐌
Like squids, octopuses, slugs, clams, scallops, mussels and oysters, snails are part of a very diverse phylum named Mollusca! Although, snails aren’t bivalves like clams, mussels and oysters but are univalves belonging to the Gastropoda class which is the most diverse group of the whole mollusc phylum. The estimated total number of different species of gastropods is around 70 000, which is the three quarter of the 110 000 known species of molluscs!
In North America, there’s around 660 different species of freshwater snails which can be found in ponds, lakes, rivers and streams. Using their radula, a structure located in their mouth which resembles a grater, they feed on a variety of algae, cyanobacteria, microbes and detritus attached to rocks and plants. They can even feed on algae by floating upside down at the surface of water! They’re basically small spider-snails? 👀 😂
Snail’s calcareous shells are secreted by the mantle, a fleshy organ covering the visceral mass. Inside the shell can be found a heart, blood vessels, kidneys, a hepatopancreas (also called digestive gland), a stomach, some intestines and a reproductive system! Aren’t they closer to us than you imagined?
To move around, snails use their muscular foot which produces waves of contraction to push the animal forward and also secretes mucus so they can glide on different surfaces. You might also have seen in the videos that snails possess eyes which are at the base of their two tentacles 😄
Music by @__forms__ 🌿
Video taken with my iPhone mounted on my BA310E Motic microscope with an @ilabcam adapter 🔬 @moticamericas
Reference:
Brown, K. M., & Lydeard, C. (2010). Mollusca: gastropoda. In Ecology and classification of North American freshwater invertebrates (pp. 277-306). Academic Press.
Gyratrix hermaphroditus.
These gorgeous little flatworms are everywhere! Freshwater, brackish and marine habitats.
This individual was found in fresh water. I do have some footage of what I think is a marine Gyratrix which appears to have several different characteristics differentiating it from this little dude here.
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Look how sparkly it is under polarised light 🥰..
Bonus info: that glowing structure at the rear is the penis stylet. Very stylish.
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Music: Marshmellow Galaxy
Neko Dreams
Swimming into a new week like...
Snailfish like this Careproctus longifilis are flabby, scaleless fishes with tadpole-like bodies, broad fins, and tiny tails. Well-adapted to a variety of deep-sea habitats—including rocky outcrops, the muddy seafloor, and the midwater—they are a diverse and thriving group with over 400 described species.
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By this time tomorrow I’ll know if I’m an official PhD candidate or if I need to rethink the next few years of my life 😱. Keep everything crossed for me please 🤞.
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Music: Wild world
Ilya Truhanov
Genoma humano finalmente ha sido secuenciado completamente luego de 20 años
Genoma humano finalmente ha sido secuenciado completamente luego de 20 años
Este artículo ha sido copiado del sitio web https://codigooculto.com - Puede leer más en: https://codigooculto.com/ciencia/genoma-humano-finalmente-ha-sido-secuenciado-completamente/ - Ningún contenido publicado en CodigoOculto.com puede ser copiado, distribuido, publicado, reescrito o utilizado de ninguna manera, en su totalidad o en parte, sin una autorización previa y por escrito de CodigoOculto.com
Este artículo ha sido copiado del sitio web https://codigooculto.com - Puede leer más en: https://codigooculto.com/ciencia/genoma-humano-finalmente-ha-sido-secuenciado-completamente/ - Ningún contenido publicado en CodigoOculto.com puede ser copiado, distribuido, publicado, reescrito o utilizado de ninguna manera, en su totalidad o en parte, sin una autorización previa y por escrito de CodigoOculto.com
Relevo de F-18, modernización F-100 y patrulla marítima, otras
El Jemad fija como prioridad la modernización del sistema de mando y control
BAE, Leonardo, MBDA y Rolls Royce, implicados
El caza Tempest contribuirá con 30.500 millones a la economía británica
La firma conjunta Athea trabajará en defensa y seguridad
Thales y Atos crean el "campeón europeo" en big data e inteligencia artificial
sábado, 29 de mayo de 2021
España
Vídeo: Margarita Robles felicita el Día de las Fuerzas Armadas
Este año conmemora varios centenarios