McGill Biology
@biomcgill.bsky.social
McGill University's Dept of Biology explores fundamental questions about the origin, #evolution, development, and #behaviour of living organisms. #biodiversity #ecology #neurobiology #molecularbiology
Reposted by McGill Biology
Never seen the death of a ciliate like this-- usually it's too much pressure from the coverslip or too much osmotic pressure. But this gradual posterior-to-anterior "unzipping" effect amazed me !
Motic BA310e - 40x Objective - sped up 2X
#microscopy #Paramecium #Iteachbiology #edusky
Motic BA310e - 40x Objective - sped up 2X
#microscopy #Paramecium #Iteachbiology #edusky
November 17, 2025 at 2:25 PM
Never seen the death of a ciliate like this-- usually it's too much pressure from the coverslip or too much osmotic pressure. But this gradual posterior-to-anterior "unzipping" effect amazed me !
Motic BA310e - 40x Objective - sped up 2X
#microscopy #Paramecium #Iteachbiology #edusky
Motic BA310e - 40x Objective - sped up 2X
#microscopy #Paramecium #Iteachbiology #edusky
Reposted by McGill Biology
Axonal pathfinding of zebrafish retinal ganglion cells forms the optic nerve. Credit to Dr. Matthew Bostock @houartlab.bsky.social. #ZebrafishZunday 🧪
November 16, 2025 at 8:30 PM
Axonal pathfinding of zebrafish retinal ganglion cells forms the optic nerve. Credit to Dr. Matthew Bostock @houartlab.bsky.social. #ZebrafishZunday 🧪
Reposted by McGill Biology
The rare & beautiful violet sea snail - a predator of Portuguese Man O’War & by-the-wind sailors. It lives its whole life at the surface of the open ocean, using a bubble raft to stay afloat. It’s normally more common in warmer waters but occasionally seen here
#marinebiology #marinelife #oceanlife
#marinebiology #marinelife #oceanlife
November 17, 2025 at 7:03 PM
The rare & beautiful violet sea snail - a predator of Portuguese Man O’War & by-the-wind sailors. It lives its whole life at the surface of the open ocean, using a bubble raft to stay afloat. It’s normally more common in warmer waters but occasionally seen here
#marinebiology #marinelife #oceanlife
#marinebiology #marinelife #oceanlife
Reposted by McGill Biology
This week's #FluorescenceFriday, we'll be treated with one of the classical models of #devbio, the neural crest cells. Here is a beautiful video of neural crest cells with GFP-tagged focal adhesion kinase (🔵) and LifeAct-RFP (🟣) migrating on a Fibronectin matrix.
📹: Adam Shellard
📹: Adam Shellard
November 14, 2025 at 5:45 PM
This week's #FluorescenceFriday, we'll be treated with one of the classical models of #devbio, the neural crest cells. Here is a beautiful video of neural crest cells with GFP-tagged focal adhesion kinase (🔵) and LifeAct-RFP (🟣) migrating on a Fibronectin matrix.
📹: Adam Shellard
📹: Adam Shellard
Reposted by McGill Biology
🌊 Developmental biologists say gastrulation is the most important moment of your life… and this sea urchin is making sure it looks fabulous for the occasion 💅
🔴 Laminin 🟢 Skeletal cells 🔵 Membranes 📸 Image from David McClay #FluorescenceFriday #DevBio
🔴 Laminin 🟢 Skeletal cells 🔵 Membranes 📸 Image from David McClay #FluorescenceFriday #DevBio
November 14, 2025 at 9:17 PM
🌊 Developmental biologists say gastrulation is the most important moment of your life… and this sea urchin is making sure it looks fabulous for the occasion 💅
🔴 Laminin 🟢 Skeletal cells 🔵 Membranes 📸 Image from David McClay #FluorescenceFriday #DevBio
🔴 Laminin 🟢 Skeletal cells 🔵 Membranes 📸 Image from David McClay #FluorescenceFriday #DevBio
The most northeasterly woolly mammoth find ever in North America. Discovered by Louis-Philippe Bateman, MSc student in Prof. Hans Larsson's lab in McGill's Dept of Biology.
www.miragenews.com/mammoth-toot...
www.miragenews.com/mammoth-toot...
Mammoth Tooth Sheds Light on Ice Age Life in Canada
A worn-down mammoth tooth discovered nearly 150 years ago on an island in Nunavut offers new insights into where and how the Ice Age giants lived and
www.miragenews.com
November 13, 2025 at 8:34 PM
The most northeasterly woolly mammoth find ever in North America. Discovered by Louis-Philippe Bateman, MSc student in Prof. Hans Larsson's lab in McGill's Dept of Biology.
www.miragenews.com/mammoth-toot...
www.miragenews.com/mammoth-toot...
Are you curious about graduate school in biology, neuroscience, or a similar field?
The McGill Biology EDI committee is holding an event aimed at taking some of the mystery out of graduate school.
Come to our panel discussion to have all your questions about graduate school answered!
The McGill Biology EDI committee is holding an event aimed at taking some of the mystery out of graduate school.
Come to our panel discussion to have all your questions about graduate school answered!
November 13, 2025 at 8:29 PM
Are you curious about graduate school in biology, neuroscience, or a similar field?
The McGill Biology EDI committee is holding an event aimed at taking some of the mystery out of graduate school.
Come to our panel discussion to have all your questions about graduate school answered!
The McGill Biology EDI committee is holding an event aimed at taking some of the mystery out of graduate school.
Come to our panel discussion to have all your questions about graduate school answered!
Reposted by McGill Biology
November 13, 2025 at 5:29 PM
Reposted by McGill Biology
Hydra (Hydra vulgaris) ✨Small but mighty! Hydra can regenerate its entire body, even its head 🧠 A classic model for regeneration, stem cell dynamics, and body axis patterning 📸 Image by Daniel Bressan de Andrade #ModelMonday #DevBio #Regeneration
November 11, 2025 at 2:28 AM
Hydra (Hydra vulgaris) ✨Small but mighty! Hydra can regenerate its entire body, even its head 🧠 A classic model for regeneration, stem cell dynamics, and body axis patterning 📸 Image by Daniel Bressan de Andrade #ModelMonday #DevBio #Regeneration
Reposted by McGill Biology
Oh, I love this. A new species of sea anemone was discovered recently that parks itself on top of a hermit crab shell like a hat. It seems to feed partly off the crab's faeces, but it also excretes a hard shell that extends the crab's home. In return, it's carried around the seafloor like a king.
November 10, 2025 at 9:57 PM
Oh, I love this. A new species of sea anemone was discovered recently that parks itself on top of a hermit crab shell like a hat. It seems to feed partly off the crab's faeces, but it also excretes a hard shell that extends the crab's home. In return, it's carried around the seafloor like a king.
Reposted by McGill Biology
A lovely look at the antennules of a Cirripedia cyprid larva (barnacle). They use the antennules almost like legs, walking across the substrate and exploring (chemically) for a place to settle. They also secrete the ‘cement’ that they use to attach themselves to their chosen spot!
#marineplankton 🦑
#marineplankton 🦑
November 11, 2025 at 7:17 PM
A lovely look at the antennules of a Cirripedia cyprid larva (barnacle). They use the antennules almost like legs, walking across the substrate and exploring (chemically) for a place to settle. They also secrete the ‘cement’ that they use to attach themselves to their chosen spot!
#marineplankton 🦑
#marineplankton 🦑
Reposted by McGill Biology
"Even Nobel Prize Winners Deal With Imposter Syndrome": Check this out @scifri.bsky.social: www.sciencefriday.com/segments/ard...
Even Nobel Prize Winners Deal With Imposter Syndrome
Neuroscientist Ardem Patapoutian immigrated to the US, found belonging in science, and did groundbreaking work on sense of touch.
www.sciencefriday.com
November 11, 2025 at 6:07 PM
"Even Nobel Prize Winners Deal With Imposter Syndrome": Check this out @scifri.bsky.social: www.sciencefriday.com/segments/ard...
Reposted by McGill Biology
A deep-sea expedition has recorded 30 previously unknown species from one of the planet’s most inaccessible regions, 700 meters into the depths of the Southern Ocean.
The astonishing array included a carnivorous “death-ball” sponge, unknown sea stars spanning multiple families, and new crustaceans.
The astonishing array included a carnivorous “death-ball” sponge, unknown sea stars spanning multiple families, and new crustaceans.
Armored worms and death-ball sponges among array of life newly documented from the deep sea
In the darkness of the deep ocean, where pressure crushes and light fails, an expedition has found an astonishing array of life, including a carnivorous “death-ball” sponge (from the genus…
news.mongabay.com
November 9, 2025 at 8:25 PM
A deep-sea expedition has recorded 30 previously unknown species from one of the planet’s most inaccessible regions, 700 meters into the depths of the Southern Ocean.
The astonishing array included a carnivorous “death-ball” sponge, unknown sea stars spanning multiple families, and new crustaceans.
The astonishing array included a carnivorous “death-ball” sponge, unknown sea stars spanning multiple families, and new crustaceans.
Reposted by McGill Biology
A worn-down mammoth tooth discovered nearly 150 years ago on an island in Nunavut offers new insights into where and how the Ice Age giants lived and died, indicating that they once roamed much farther east than previously believed.
➡️ mcgill.ca/x/iVk
➡️ mcgill.ca/x/iVk
November 5, 2025 at 7:50 PM
A worn-down mammoth tooth discovered nearly 150 years ago on an island in Nunavut offers new insights into where and how the Ice Age giants lived and died, indicating that they once roamed much farther east than previously believed.
➡️ mcgill.ca/x/iVk
➡️ mcgill.ca/x/iVk
Reposted by McGill Biology
New study from our lab: Feeding efficiency (trophic impact) of goldfish varies with combinations of thermal & salinity conditions typical of urban ponds in north temperate regions. Salinity enhances efficiency at temperatures below the thermal optimum of goldfish.
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Effects of temperature and chloride salinity on the functional response of goldfish (Carassius auratus) - Biological Invasions
Freshwater animals released into temperate urban environments are increasingly subjected to the effects of elevated water temperatures (via climate warming) and salinization (via road salt application...
link.springer.com
November 6, 2025 at 8:12 PM
New study from our lab: Feeding efficiency (trophic impact) of goldfish varies with combinations of thermal & salinity conditions typical of urban ponds in north temperate regions. Salinity enhances efficiency at temperatures below the thermal optimum of goldfish.
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Reposted by McGill Biology
Hosting the Global Change Symposium was a great way to end October! From biodiversity in the St. Lawrence river to pipeline resistance, Arctic health and global connectivity, the event featured McGill Bieler School Environment research at a whole new scale. Thank you to all who attended.
#mcgill
#mcgill
November 4, 2025 at 6:45 PM
Hosting the Global Change Symposium was a great way to end October! From biodiversity in the St. Lawrence river to pipeline resistance, Arctic health and global connectivity, the event featured McGill Bieler School Environment research at a whole new scale. Thank you to all who attended.
#mcgill
#mcgill
Conducted in Prof. Melania Cristescu’s lab at McGill.
New paper out in Molecular Ecology! We used eRNA-based metatranscriptomics to characterize freshwater eukaryotic communities and analyze gene expression responses to environmental stress across diverse eukaryotic taxa. @wbmorgadog.bsky.social #eRNA #eDNA onlinelibrary.wiley.com/doi/10.1111/...
Environmental RNA‐Based Metatranscriptomics as a Novel Biomonitoring Tool: A Case Study of Glyphosate‐Based Herbicide Effects on Freshwater Eukaryotic Communities
Traditional morphology- and molecular-based biodiversity surveys provide essential information on species composition and diversity, but they rarely provide information about the physiological states...
onlinelibrary.wiley.com
November 2, 2025 at 5:42 PM
Conducted in Prof. Melania Cristescu’s lab at McGill.
Reposted by McGill Biology
Happy (and spooky) #FluorescenceFriday
Switching from frogs (which are underrated btw) to zebrafish has really made me appreciate transparent tissues! 🐟
28 hpf, ⚪ nuclei, 🔴 F-actin
Switching from frogs (which are underrated btw) to zebrafish has really made me appreciate transparent tissues! 🐟
28 hpf, ⚪ nuclei, 🔴 F-actin
October 31, 2025 at 3:20 PM
Happy (and spooky) #FluorescenceFriday
Switching from frogs (which are underrated btw) to zebrafish has really made me appreciate transparent tissues! 🐟
28 hpf, ⚪ nuclei, 🔴 F-actin
Switching from frogs (which are underrated btw) to zebrafish has really made me appreciate transparent tissues! 🐟
28 hpf, ⚪ nuclei, 🔴 F-actin
Reposted by McGill Biology
I slowed down this vid in the beginning, but let it get to its actual real speed - crazy!
Admittedly, I kept wondering how this #polychaete #worm would be in a marinara sauce, covered in pecorino romano🤤
Shot in #Okinawa.
#marineworm #polychaeteworm
Admittedly, I kept wondering how this #polychaete #worm would be in a marinara sauce, covered in pecorino romano🤤
Shot in #Okinawa.
#marineworm #polychaeteworm
October 14, 2025 at 2:08 PM
I slowed down this vid in the beginning, but let it get to its actual real speed - crazy!
Admittedly, I kept wondering how this #polychaete #worm would be in a marinara sauce, covered in pecorino romano🤤
Shot in #Okinawa.
#marineworm #polychaeteworm
Admittedly, I kept wondering how this #polychaete #worm would be in a marinara sauce, covered in pecorino romano🤤
Shot in #Okinawa.
#marineworm #polychaeteworm
Reposted by McGill Biology
Bryozoan coronate larva…or man in the moon?
#marineplankton 🦑
#marineplankton 🦑
October 30, 2025 at 6:19 PM
Bryozoan coronate larva…or man in the moon?
#marineplankton 🦑
#marineplankton 🦑
Reposted by McGill Biology
Ascidians (Ciona intestinalis)🪸Our distant chordate cousins! 🌊 Simple sea squirts that reveal how vertebrate body plans evolved 🧬 A key model for notochord formation, neural induction, and cell lineage mapping 📸 Video by MBL Embryology 2019 #ModelMonday #DevBio #EvoDevo
October 28, 2025 at 12:46 AM
Ascidians (Ciona intestinalis)🪸Our distant chordate cousins! 🌊 Simple sea squirts that reveal how vertebrate body plans evolved 🧬 A key model for notochord formation, neural induction, and cell lineage mapping 📸 Video by MBL Embryology 2019 #ModelMonday #DevBio #EvoDevo
