These Sharks Eat Plants (And It Gets Weirder.)
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- Опубліковано 2 чер 2024
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The tiny bonnethead shark might be holding a secret or two. Host Jasmin Graham joins her former mentee Kathy Liu to uncover why male and female bonnetheads may be exhibiting sexual dimorphism and whether cryptic speciation is another phenomenon found in this mini shark.
On Sharks Unknown, host Jasmin Graham joins her peers in shark science to investigate mysteries including shark migration, and the effects of climate change. Jasmin and her guests connect on how their lives inform and impact their research.
Original Production Funding Provided by National Science Foundation - Grant No. 2120006. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
Series Funding is provided by the National Aquarium and the New England Aquarium.
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3:07 Fred the bonnethead shark showed up at the bar minutes later telling a wild story about his alien abduction that nobody believed.
😂
"Did they use the alien an*l probe on you", Bob asked anxiously. "Worse!", exclaimed Fred. "They biopsied me."
So do sharks have conspiracy sites about being abducted and tubes forced into them. Vlogs about mysterious vessels with odd looking aliens? Just asking questions…
Hammerhead sharks are like clowns where they look funny but they're still scary to me
What's the opposite of cryptid speciation? Like dogs for ex. Look sooooo different, but are all the same species, and even calling them familiarous instead of lupus will start fights. So much physical plasticity, but it's all the same DNA and goes back to wild type in like 3 generations
Breeds! We use the word commonly and don’t even realize it is the word for human selective husbandry of domesticated animals.
So interesting!! Cryptic speciation is fascinating
Jasmin, I love your humor paired with your brains. You always make me laugh and I always learn something new about sharks!! ❤
I love Sharks Unknown
More thorough and specific genetic testing must be done because they could be genetically very similar to generic "Bonnet Heads" but separated by geography diet, predation and behavior genetically different enough to be considered a separate species. Sort of like the difference between Bonobo Chimps and regular Chimps. It's easy for us humans to drive the 100 miles or so from Tampa to Miami across the short thin part of Florida to Miami, we think that's not much distance. The Bonnet Heads in Biscayne and Tampa Bay however are really thousands of miles apart so probably really two different groups. Same with the Caribbean Bonnet Heads. They could all be different species. Even the Texas Bonnet Heads for instance appear much smaller than those depicted here.
It's funny that out of all the things that are cool about bonnethead sharks they chose "slight difference in head shape between sexes"... let me remind you this thing eats GRASS!
... to be fair that research was probably already taken.
My armchair scientist hypothesis regarding the head shape development is that the development rate is a governed by a hormone that is slightly more prevalent in one gender than the other, leading to the shape rounding out earlier in development but both eventually reaching a rounded shape.
My armchair scientist mind thinks that’s a great hypothesis
watching how carefully they catch the sharks, get the data they need without harm was really cool. then my brain watching the sharks getting released - what is he gonna go tell the others? that he just got abducted and probed by aliens?
Oh! I love hammerheads even more now! So cool! You ladies are awesome keep doing what you do! 🥰🤟🏾
With bonnethead sharks being on both sides of the central Americas, how did they become separated like that? And if they were separated when the Americas finally joined up, why haven't they independently diverged from their last ancestors? It seems weird that a species can be in unconnected areas like that.
Bonnetheads are the cutest sharks, full stop ❤
You should do a crossover episode with Hybrid Calisthenics
The broader head for more mature males remind me of how human faces broaden as they age, in general, male faces have especially broader faces as they go from childhood to their "final form" as an adult.
Bonnet heads are my faaaaaavorite sharks everrrrr!! So cute and interesting!! ❤❤❤
A question about those new PBS shows - will we be able to watch them for free as non-US-residents?
As a minority member myself that wish love science i love your show a lot!
The "CRYPTIC SPECIATION” concept was new and very interesting, but made me wonder, what genetically is considered to be different enough to consider two groups of animals that look physically identical to be different species, while in other group of animals that look different are not considered to be different species, such in dogs, cats and humans?
I think that the Cryptic speciation is interesting but also dangerous , since ignorant people could misuse it for racist purposes. Thus, and since this is a show by scientist from minority backgrounds, i think it would be very interesting to learn how current knowledge of science can differentiate species that look so much alike.
A fun fact, about SEXUAL DIFORMISM it would be also to learn that in those birds that display it, those in most cases males are the attractive of colorful ones trying to attract the females, in some cases the females are the ones competing to attract the males, such in the case of Eclectus parrot in Australia. So much so, that female Eclectus parrots (red and vibrant) were initially considered to be a different species from their less attractive green counterpart males. 😊
Go girls! keep up with your research! i love it! Thanks for sharing it with all of us!
At 6:11 the vocals are backwards from the map locations
Hi! I love PBS. I learn so much all the time. I do have a question though. How did you initially become interested in biology? I have a 5 year old daughter who loves nature and animals and bugs (yuck) but I have no idea on the pathway to a career in biology. Besides majoring in biology in college, what can I do to help grow her love of nature/biology and hopefully lead to a career she will love? I would appreciate any and all tips. It's my first daughter and I have no manual. 😅
Thank you for your question! The whole Sharks Unknown team is touched by your daughter’s interest in science. Here’s what Jasmin suggests:
Books, documentaries, extra curricular activities like camps and stuff, visiting zoos and aquariums spending time outside, and encouraging their curiosity as much as possible!
Wouldn't each be different because of their environment? They have adapted to that environment... The weather, temperature and what grows and lives in those different temperatures. I love in Canada, so that makes me different then someone that lives in Florida... Temperatures and what actually grows in each environment. We look the same, but I'm probably genetically different.
This is what aliens do to us. 👀👀👀👀 🤭🤭🤭🤭
I think salmon sharks are cooler! Just my opinion.
Sure a tiny great white is neat but this thing eats grass my guy... also freaking Thresher sharks are cooler, they whip fish with their long tail!
@nothinglessthanutopia Thanks for squashing another naturalists opinion. Everyone is entitled to each's own. However don't quench anothers.
Shark life
💜💜💜💜
W😍W I wanna meet up with Cathy at a boat and go out with her too!! 😬 but seriously it’s good to see such beautiful ladies as yous two interested and involved in these kinds of studies 👍🏼 thanks for sharing the informative video
I thought this was going to be about Gawr Gura.
I cannot help feeling sorry for the shark being intubated. It must have felt somewhat terrified.
Lost me when you started injecting the identity politics in. Lost a lot of credibility, but the sharks are very interesting indeed. Bonnet heads are my favorite "not badass" species (obviously, tigers, makos, and whites are much cooler). The bonnets are actually kinda cute!
I'm not looking to know anything about boring Humans; I clicked to know about the sharks.
Down voted this progressive channel; for saying there's sexual dimorphism. That's transphobic