Comments on: Adaptation of the Week – Flatfish Eyes & Recapitulation Theory http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/ Musings on Nature, Science, Evolution, Biology, and Education Thu, 09 Feb 2012 01:23:42 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Irradiatus http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-3112 Irradiatus Sat, 07 Mar 2009 17:28:09 +0000 http://biochemicalsoul.com/?p=1019#comment-3112 Thanks alot, Adrian! I don't know how I missed these videos before. I have updated the post above, and added a new post with the videos <a href="http://biochemicalsoul.com/2009/03/flatfish-eye-development-video-update/" rel="nofollow">here</a> for those who have already read the article. Thanks alot, Adrian!

I don’t know how I missed these videos before.

I have updated the post above, and added a new post with the videos here for those who have already read the article.

]]> By: Adrian Thysse http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-3110 Adrian Thysse Sat, 07 Mar 2009 13:55:30 +0000 http://biochemicalsoul.com/?p=1019#comment-3110 You can see a video of the migration of the flatfish eye at this post: http://evolvingwithdarwin.blogspot.com/2008/07/hopeful-monster-flounders.html You can see a video of the migration of the flatfish eye at this post:
http://evolvingwithdarwin.blogspot.com/2008/07/hopeful-monster-flounders.html

]]> By: Bjørn Østman http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-2998 Bjørn Østman Fri, 27 Feb 2009 19:34:32 +0000 http://biochemicalsoul.com/?p=1019#comment-2998 That should make it clear to any lurking creationists that it's an illustration of a principle, and not to be taken as hard evidence. Thanks! That should make it clear to any lurking creationists that it’s an illustration of a principle, and not to be taken as hard evidence.

Thanks!

]]> By: DNLee http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-2979 DNLee Thu, 26 Feb 2009 20:38:15 +0000 http://biochemicalsoul.com/?p=1019#comment-2979 That guy in that first flatfish picture has one mean mug on him. That guy in that first flatfish picture has one mean mug on him.

]]> By: Irradiatus http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-2978 Irradiatus Thu, 26 Feb 2009 19:29:39 +0000 http://biochemicalsoul.com/?p=1019#comment-2978 That would definitely be an important point to make if I were using those drawings to make any claims about all vertebrates sharing common "phylotypic stages." As it is, I think that would have been cumbersome to explain and it's beyond the scope of the article. I simply used the drawings as a quick illustration of the very basic concept for people who haven't a clue what early embryos look like across species. In fact, the whole beginning of the article is about how there is NOT a recapitulation of phylogeny through development. Different species have very different courses of development. And I tried to be careful in my language to say that fish gill pouches are only <i>similar</i> to human pharyngeal arches. They are certainly very different as well. I just wanted to point out that there are specific developmental processes that possess some similarity, simply due to their evolutionary history. But I'm still very glad you made the comment, and provided the link for others to read. I would never use that picture when writing to a scientific audience. Hopefully my writing made it clear that I was targeting people who know next to nothing about development. I will certainly add a little disclaimer into the caption. I'm sorry to have "unsettled" you, Bjørn. And I most certainly hope you will continue to stop by considering your obvious developmental knowledge. :) That would definitely be an important point to make if I were using those drawings to make any claims about all vertebrates sharing common “phylotypic stages.”

As it is, I think that would have been cumbersome to explain and it’s beyond the scope of the article. I simply used the drawings as a quick illustration of the very basic concept for people who haven’t a clue what early embryos look like across species.

In fact, the whole beginning of the article is about how there is NOT a recapitulation of phylogeny through development. Different species have very different courses of development. And I tried to be careful in my language to say that fish gill pouches are only similar to human pharyngeal arches. They are certainly very different as well. I just wanted to point out that there are specific developmental processes that possess some similarity, simply due to their evolutionary history.

But I’m still very glad you made the comment, and provided the link for others to read. I would never use that picture when writing to a scientific audience. Hopefully my writing made it clear that I was targeting people who know next to nothing about development.

I will certainly add a little disclaimer into the caption.

I’m sorry to have “unsettled” you, Bjørn. And I most certainly hope you will continue to stop by considering your obvious developmental knowledge.

:)

]]> By: Bjørn Østman http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-2977 Bjørn Østman Thu, 26 Feb 2009 19:15:35 +0000 http://biochemicalsoul.com/?p=1019#comment-2977 I find it a little unsettling that you would include Romanes' copy of Haeckel's embryo drawing without mentioning the simplifications made at the phylotypic stage. http://zygote.swarthmore.edu/evo5.html I find it a little unsettling that you would include Romanes’ copy of Haeckel’s embryo drawing without mentioning the simplifications made at the phylotypic stage.

http://zygote.swarthmore.edu/evo5.html

]]> By: Anna http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-2975 Anna Thu, 26 Feb 2009 14:29:40 +0000 http://biochemicalsoul.com/?p=1019#comment-2975 Amazing! I'm very interested in all things 'ontogeny', this was a very cool read. Amazing!
I’m very interested in all things ‘ontogeny’, this was a very cool read.

]]> By: Eric http://biochemicalsoul.com/2009/02/adaptation-of-the-week-flatfish-recapitulation/comment-page-1/#comment-2967 Eric Thu, 26 Feb 2009 02:10:45 +0000 http://biochemicalsoul.com/?p=1019#comment-2967 Gotta say, so far I am loving this series! This one is a classic too. Thanks for explaining the Haeckle theory in a way that my son really connected with too! I love when I see the flatfish swimming around at about a 45 degree angle before the settle to the bottom completely. Gotta say, so far I am loving this series!
This one is a classic too. Thanks for explaining the Haeckle theory in a way that my son really connected with too!

I love when I see the flatfish swimming around at about a 45 degree angle before the settle to the bottom completely.

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