Пікірлер

• 
  @roubo3 күн бұрын

  Excellent lesson. Thanks so much for sharing this.

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  @skepticalmaiden5 күн бұрын

  For some senseless reason “ Bexar “ is pronounced “ 🐻 “ by the locals. They’re wrong. There’s no reason it should be pronounced that way. I say as it’s pronounced correctly. I can’t understand the reasoning behind it. I live in San Antonio .

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  @jennagrimshaw32755 күн бұрын

  Great video on phylogenetic signal! And I really appreciated the case studies... Many times tutorials have simplified their examples to such a degree that it is difficult to apply them intuitively to real data

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  @jgolden45tuba111 күн бұрын

  I can tell you what happened these birds were really loud and people shot them

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  @JasonMillerOutdoors12 күн бұрын

  Getting that Jaguar on my trail camera was incredible! I will get him again...

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  @joesantora15814 күн бұрын

  I offer the following retort to your video: you are gay.

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  @rod952521 күн бұрын

  Good grief. Poster boy for environmentalist geek.

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  @stevenoconnor325623 күн бұрын

  Jaguars were originally a North American species as South America was isolated from North America for millions of years. Jaguar's ancestors probably entered the Americas from Eurasia.

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  @syedkaleem86824 күн бұрын

  now what is this species over or not what is its future

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  @Rockmonanov25 күн бұрын

  We need to start getting cameras out to KZreadrs so they can start taking pictures of all the Ivory Billed Wood Peckers they’re seeing!

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  @tchalymonestime729228 күн бұрын

  Underrated bro

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  @BiologistDillon28 күн бұрын

  Appreciate it!

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  @skylerstevens888729 күн бұрын

  Neat

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  @wswildworld5465Ай бұрын

  have you read Venomous Animals of North America Larry Jones? I'm in there because of these ants. Wild experiment not recommended.

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  @BiologistDillon29 күн бұрын

  I haven't but ill need to check it out! What got you in that book? Bad bites?

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  @wswildworld546521 күн бұрын

  @BiologistDillon you'll see. Venomous Animals of North America Larry Jones a great book. I'm alive

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  @DorfjungeАй бұрын

  The Problem with rock stacking. What I expected: People randomly piling up rock-stacks will lead hikers into wrong directions. What I got: Mah poor moist salamanders and microalgae and also I'm gay!

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  @backsideboy1642Ай бұрын

  Thanks Dillion!

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  @Dchicuy14Ай бұрын

  We got gay bugs before gta 6

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  @User-xq2zj8qk2fАй бұрын

  Dang even bugs are gay now

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  @PixelRockettАй бұрын

  It also means that when in captivity, poison dart frogs and hooded pitohui are no longer poisonous!

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  @BiologistDillon29 күн бұрын

  Yea! that poison sequestration is pretty fascinating

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  @panafricandesignsandapparelАй бұрын

  Man thank you for the detail presentation...08:03 - What are Sister Groups 19:17 - Common Mistake: Phylogenies can rotate

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  @BiologistDillon29 күн бұрын

  Appreciate it!

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  @jacobstevens9719Ай бұрын

  Dillion this is fucking fantastic! I'm currently composing a disaster research study about the coqui infestation, and this is honestly the best video I've ever found covering these species. I can't believe I didn't find you sooner, I will be citing you! Seriously man, this is awesome I'd even call this a mini documentary.

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  @BiologistDillon29 күн бұрын

  Hey im glad you liked it! Appreciate the comment

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  @Redtornado6Ай бұрын

  Where’s the line of killing 2 ants in my house and killing a worm in nature.

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  @user-op2ro5xt9d2 ай бұрын

  I do the all-carnivore diet, have done it for years, and haven’t suffered health problems or deficiency. I have however resolved health issues and deficiencies.

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  @vishalupadhyay4162 ай бұрын

  How to find an outgroup in the phylogenetic tree 🌳??????

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  @BiologistDillonАй бұрын

  Hey! Just answered your question as a short kzread.info_erKX-44fjE

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  @alizuqarnain47852 ай бұрын

  Thank you so much Mr.Dillon, you really made it very simple to understand , even i'm an undergraduate student but still i was able to understand the each concept... May God bless you more✨

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  @BiologistDillonАй бұрын

  Thank you! I really appreciate it

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  @Nathavolt2 ай бұрын

  I'm brazilian. If the USA wants to get jaguars to return to their territory and preserve them there, it might be interesting to talk to Leandro Silveira, a great Brazilian expert on jaguars. Perhaps his work at the "Instituto Onça Pintada" (Jaguar Conservation Fund) can inspire people in the USA to do something similar, adapted to their reality. He and his wife Ana have many years of experience with jaguars, especially those in the "cerrado" biome region (which is more like a savannah than a forest). Note: in Brazil, jaguars from the Pantanal biome are the largest, those from the Amazon region are smaller than those from the Pantanal and there are also jaguars from the "cerrado" biome. Having a population with a good number of these animals again may create situations similar to what occurs in Brazil: the conflict between jaguars and rural producers, especially cattle breeders, so it's better to be prepared to resolve this issue with the farmers, otherwise the farmers will eliminate the jaguars. Watch the video titled "SIM, A ONÇA-PINTADA ATACA O SER HUMANO! | RICHARD RASMUSSEN" where Leandro Silveira explains to Brazilian biologist Richard Rasmussen that large rural properties are better for jaguar conservation than small properties (activate automatic translation). But this is in Brazil, where because of the "Legal Reserve" law. The "Legal Reserve" is a percentage of the area covered by native vegetation, located within a rural property in Brazil. The Legal Reserve is mandatory by law. In the Amazon Jungle the percentage is 80%, that is, whoever buys an area in this region will only be able to deforest 20% of it and keep 80% untouchable. In the rest of the country the percentage is 20%. These "Legal Reserves" on each farm create mini refuges for wildlife and jaguars can go from one to another until they find an ideal region for them. Leandro is aware that it's impossible to eliminate large farms, so Leandro's work is essential to resolve conflicts between rural producers and jaguars. Leandro's work with the cooperation of these large farmers shows that it's possible to preserve jaguars without having to harm agribusiness. Also watch the video titled "UMA ONÇA-PINTADA SELVAGEM INVADIU O INSTITUTO! | RICHARD RASMUSSEN" from 8:20m, where Leandro explains a lot of interesting things about jaguars. There are 02 Brazilian channels on KZread that are linked to the “Instituto Onça Pintada”, which are: “Família Animal” and “Tiago Jácomo”. This institute usually receives many little orphans taken by our Environmental Police or they go looking for them when local farmers and residents call them. Many of these orphans arrive at the institute traumatized and in poor health, recover with good treatment and live happily in the sanctuary. The video titled "Jaguar: o destino de uma espécie em extinção - HD Animal Documentary" shows how Leandro Silveira and his team work. In Brazil, the government created a law that prohibits the killing of wild animals. If our environmental police catch a hunter carrying a dead wild animal, he will be arrested without the right to pay bail. The conservation of jaguars must not only be carried out by a group of people, but must also have the help and participation of the government and the population. Only with everyone's participation can jaguar conservation be successful.

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  @BiologistDillonАй бұрын

  Really appreciate this thorough answer!

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  @NathavoltАй бұрын

  @@BiologistDillon I imagined that you, being a biologist, would enjoy receiving this information. As a Brazilian, I didn't know that jaguars used to exist in the USA. I hope that the USA will be able to have jaguars on its territory again and will make an effort to preserve them. Also watch the video "AS DIFERENTES ONÇAS DO BRASIL! | TIAGO JÁCOMO", where he explains the different characteristics of the jaguars that live in the Pantanal (the largest of all), those that live in the Cerrado (the second largest) and those that live in Amazon (the smallest of all). I'ts very interesting. Tiago Jácomo is the son of biologists Leandro and Ana.

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  @cinthialara3862 ай бұрын

  Great video by the way If colossal bioscienses succeed in resurrecting the wolly mammoth,dodo and thylacine,what other species do they want to resurrect? Although we are still in 2024 and 2027 has not arrived,is it necessary to resurrect extinct species if there are positive results?

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  @BiologistDillonАй бұрын

  Unsure what their plans are as I am not in those board meetings haha. Personally, id like to see the return of the passenger pigeon, given its huge ecological importance and recent extinction

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  @Turtlefloweer2 ай бұрын

  Really interesting! Thank you for these videos Dillon! ❤

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  @BiologistDillonАй бұрын

  Glad you enjoy them!

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  @pimaggot2 ай бұрын

  Rock cairns are absolutely needed in desert trails. But agree with the streams

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  @SneakyTogedemaru2 ай бұрын

  Hmm. So would you say it might be okay if I just pick one or two nice but dry and such rocks on each of my hikes and then just stack them later someplace at home? Fun, beautiful, and pretty safe to the environment, isn't it?

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  @EquilibriumExpressions-lw7ud2 ай бұрын

  Don’t stack rocks, balance them, don’t exercise dominion over nature work with it 😜 ps we are part of nature

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  @user-fz6yr3rw7j2 ай бұрын

  Nice job on the video and information provided. Although I increased the speed on the video it was very informative and I appreciate your time and effort in providing us with educational tools such as this video.

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  @user-bk2by9uz4z2 ай бұрын

  I have read some papers that use phylogenetic signals (such as Moran's I and Blomberg’s K) to test whether there is evidence of co-phylogeny between hosts and symbionts. However, based on my understanding, the typical method for testing co-phylogeny involves building two trees, converting them into distance matrices, and then performing statistical analyses such as UniFrac dissimilarity. Therefore, I am wondering why phylogenetic signals can be used to analyze co-phylogeny. (Perhaps host taxa can be viewed as traits? But there may be a lack of phylogenetic distance between host taxa in phylogenetic signals tests.) Thanks!

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  @BiologistDillon2 ай бұрын

  Great question! Lets look at this from a conceptual angle. If we expect hosts and symbionts to exhibit co-phylogeny, what would phylogenetic signal look like? In this case, the trait we are testing signal for would be the degree of relationship between host and symbiont. From this question, that trait may be quantified as the dissimilarity between the two phylogenies. IF there is a tightly linked relationship, then we would expect stronger signal. This is because the host-symbiont relationship is non-random with respect to the phylogeny. In the same way that red eyes are tightly linked to frogs in the example from the video. However, if there wasn't a tight relationship, say the symbiont clade under question contained many generalists that switched hosts randomly, we would expect weak signal. As that relationship is now truly random with respect to the phylogeny of either clade, there is no real pattern of signal to detect. Couple things to note: 1) Phylo-signal would be just one tool in the wheelhouse to answer this question. 2) The literature is primarily focused on parasite-host interactions where this relationship is well known. 3) The r package rtapas seems specifically suited to this question: cran.r-project.org/web/packages/Rtapas/Rtapas.pdf

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  @TNDTMDTJD3 ай бұрын

  that is NOT a cucumber

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  @mandoc62493 ай бұрын

  Cool video man keep it up

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  @BiologistDillon3 ай бұрын

  Appreciate it! 🙏

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  @kazishahjalal68523 ай бұрын

  Please don't give up!!! We are here to watch your videos!!!

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  @BiologistDillon3 ай бұрын

  Thank you! Scheduling up a ton more webinars today. Stay tuned for more!

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  @allonewordinlowercase85293 ай бұрын

  Great vid! It was very easy to digest and clearly delivered -- best of luck with the channel!

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  @BiologistDillon3 ай бұрын

  Thank you!

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  @evanbailey47813 ай бұрын

  As I understand, the K statistic is modelling the degree of trait divergence relative to a particular correlation structure (usually BM), such that K < 1 suggests that close relatives resemble each other less than expected under BM, and K > 1 implies that close relatives resemble each other more than expected under BM (i.e. there is clustering within taxa around particular trait values). In this way, could K > 1 suggest potential constraints on trait evolution within a given phylogeny (i.e. because related members of one part of the tree fail to diverge as expected under a random walk), whereas K < 1 would suggest a positive selective pressure (i.e. something akin to the 'spring' of selective pressure in the OU model where organisms diverge due to being 'pulled' towards a local optimum). Or is this too simplistic/too much assumption? In turn, if we think about phylogenetic signal relative to something like the OU model, could we use something like K stayistict to infer something about the rate of change across different parts of the phylogeny?

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  @BiologistDillon2 ай бұрын

  Great question! Looks like I missed it when it was posted. I dont think your reasoning is too simplistic. Rather, it doesnt account for the fact these tests only detect the pattern of signal, not the underlying pattern. In truth, there could be any number of reasons the K presents with a certain value. You might have luck looking into phylogenetic over- and under dispersion from community phylogenetics. These are conceptually related to signal in that they detect traits which are spread out more than we expect (overdispersion; similar to lower signal) or less than we expect (under-dispersion; similar to higher signal). Several papers specifically reference habitat filtering and niche conservatism as a potential cause for underdispersion. Ive been looking at bat data lately, so this article was fresh in my mind: onlinelibrary.wiley.com/doi/abs/10.1111/btp.12501 From the abstract: " underdispersion indicates the operation of interclade competition, abiotic filtering, or biotic filtering. We expected (1) biotic filtering in landscapes with extensive forest loss to result in underdispersion; " Here's another source: www.ncbi.nlm.nih.gov/pmc/articles/PMC6953669/ For the second part of the comment, the K stat assumes a brownian motion model, however the Munkemuller source listed in the video does contain some information in the appendix about applying the test statistics to an OU model. besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.2041-210X.2012.00196.x Ill leave the question about applicability of OU models to that source and the literature base! A lot of the nuances in that question depend on the exact study and data. Hope this helps!

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  @dogtoddy3 ай бұрын

  "I understand that my sighting is awful, in so far as I saw none of what we consider classic field marks of an Ivorybill, and I had no opportunity to observe the bird for any length of time." - Erik Hendrickson

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  @dogtoddy3 ай бұрын

  "I saw no field marks that we associate with Ivory-billed Woodpecker: I did not see the head, or bill, or neck or body, or the tail" - Erik Hendrickson

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  @kirkette3 ай бұрын

  its okay to just think something looks tacky without coming up with an elaborate justification for not liking it lol

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  @idk-cj8mn3 ай бұрын

  Underrated

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  @billybobscat62333 ай бұрын

  How is this channel not WAY more known? These clips are amazing. Keep up the videos I'm beating this channel blows up in popularity eventually.

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  @BiologistDillon3 ай бұрын

  Appreciate it!

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  @user-cp5do1gq7k3 ай бұрын

  It was almost interesting but all I could see was the hair!! ehhhhhhhhh🤢

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  @kosmikastaway12853 ай бұрын

  At the 10:36 time mark when you discuss divergent evolution creating Low Signal the phylogeny, green vs orange frogs seems High Signal based on the trait of colour. How does one distinguish evolutionary process signal vs trait signal in this case? Not sure if you discuss it later in the video as I was watching before work and had to stop here for now - hopefully can jump back in later to finish. Loving your videos BTW

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  @BiologistDillon3 ай бұрын

  Yea I realized in the moment that particular visualization doesn't illustrate the point well. In the example as shown, divergent evolution would read as strong signal IF YOU ONLY ANALYZED THOSE 5 FROG SPECIES. But, if we zoomed out the tree to include many more taxa, and we assumed most of the clade were green frogs, then it would read as lower signal. In the latter case, the group was all green frogs (strong signal) until divergent evolution enabled the evolution of orange frogs. Hope this makes sense, I might make a short video on this to illustrate the point better. I agree the visual was poorly designed/explained.

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  @MFS9903 ай бұрын

  I mean can you clone a bear with his poop? I really mean it...

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  @kbr3693 ай бұрын

  W

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  @skipper3693 ай бұрын

  So Silly

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  @MURDERMITTEN6663 ай бұрын

  I really wish my tribe would do this with the great lakes as our qhole tribe history has revolved around the great lakes.

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  @bikrbastrd73394 ай бұрын

  He heard the border was open

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  @rochelle33494 ай бұрын

  This was super helpful for my bio 2 class. Thank you for sharing your knowledge on those topics!