Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Evolution is slowing snails down
bbc ^ | 11 May 2009 | Matt Walker

Posted on 05/11/2009 9:44:54 PM PDT by JoeProBono

Garden snails are evolving slower metabolisms. Natural selection is favouring snails with reduced metabolic rates, researchers in Chile have discovered. It is the first time that evolution has been shown to select for this trait in individuals of any species. Snails with lower metabolisms are at an advantage because they have more energy to spend on other activities such as growth or reproduction, the researchers say in the journal Evolution. Roberto Nespolo and Paulina Artacho of the Southern University of Chile in Valdivia examined a long standing biological hypothesis known as the "energetic definition of fitness". "This predicts that animals that spend less energy will have more surplus for survival and reproduction," says Nespolo.

(Excerpt) Read more at news.bbc.co.uk ...


TOPICS: Miscellaneous; Science
KEYWORDS: evolution

1 posted on 05/11/2009 9:44:54 PM PDT by JoeProBono
[ Post Reply | Private Reply | View Replies]

To: JoeProBono

I’ve been waiting for this news!


2 posted on 05/11/2009 9:49:03 PM PDT by americanophile
[ Post Reply | Private Reply | To 1 | View Replies]

To: americanophile

3 posted on 05/11/2009 9:50:26 PM PDT by JoeProBono (A closed mouth gathers no feet)
[ Post Reply | Private Reply | To 2 | View Replies]

To: JoeProBono

4 posted on 05/11/2009 9:53:40 PM PDT by JoeProBono (A closed mouth gathers no feet)
[ Post Reply | Private Reply | To 3 | View Replies]

To: All

5 posted on 05/11/2009 9:56:18 PM PDT by JoeProBono (A closed mouth gathers no feet)
[ Post Reply | Private Reply | To 4 | View Replies]

To: JoeProBono

And all along I thought it was global warming!


6 posted on 05/11/2009 9:56:32 PM PDT by beethovenfan (If Islam is the solution, the "problem" must be freedom.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: beethovenfan

7 posted on 05/11/2009 9:57:38 PM PDT by JoeProBono (A closed mouth gathers no feet)
[ Post Reply | Private Reply | To 6 | View Replies]

To: JoeProBono

“This predicts that animals that spend less energy will have more surplus for survival and reproduction,” says Nespolo.


Mr. Nespolo needs to study hibernating bears and try to figure out whether a snail is a bear’s uncle or vice versa. What a junkscientist.


8 posted on 05/11/2009 9:59:54 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: JoeProBono
Gee, I haven't seen a photo of the Clinton Library for quite a while.

Thanks for posting.

Leni

9 posted on 05/11/2009 10:01:59 PM PDT by MinuteGal
[ Post Reply | Private Reply | To 7 | View Replies]

To: MinuteGal

10 posted on 05/11/2009 10:17:42 PM PDT by JoeProBono (A closed mouth gathers no feet)
[ Post Reply | Private Reply | To 9 | View Replies]

To: JoeProBono
Evolution is slowing snails down

Which reminds me, the price of stamps has gone up to 44 cents as of today.

11 posted on 05/11/2009 10:21:21 PM PDT by Texas Eagle (If it wasn't for double-standards, Liberals would have no standards at all. -- Texas Eagle)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Texas Eagle
LOL!

Leni

12 posted on 05/11/2009 10:26:43 PM PDT by MinuteGal
[ Post Reply | Private Reply | To 11 | View Replies]

To: Texas Eagle

13 posted on 05/11/2009 10:35:17 PM PDT by JoeProBono (A closed mouth gathers no feet)
[ Post Reply | Private Reply | To 11 | View Replies]

To: JoeProBono
This explains the growth of the welfare rolls, and of American Idol. /sarc>

Cheers!

14 posted on 05/12/2009 4:10:10 AM PDT by grey_whiskers (The opinions are solely those of the author and are subject to change without notice.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: JoeProBono

I am curious as to what sort of person thinks discovering this crap is even remotely important to humans. And if they knew as a child that they wanted to study the fluctuating speeds of snails when they grew up. Too many government grants, I think.


15 posted on 05/12/2009 7:38:38 AM PDT by beckysueb (Palin/Jindahl in 2012)
[ Post Reply | Private Reply | To 1 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson