Comments on: The Bigger the Testicles, The Smaller the Brain http://www.ocellated.com/2006/01/09/the-bigger-the-testicles-the-smaller-the-brain/ A blog on my latest adventures, pictures, and travels Tue, 06 Jan 2009 18:46:52 +0000 http://wordpress.org/?v=2.7 hourly 1 By: TOJP http://www.ocellated.com/2006/01/09/the-bigger-the-testicles-the-smaller-the-brain/comment-page-1/#comment-125 TOJP Tue, 10 Jan 2006 21:47:26 +0000 http://www.ocellated.com/2006/01/09/the-bigger-the-testicles-the-smaller-the-brain/#comment-125 It has been stated that the Creator made men with brains and genitalia, but with only enough blood for one or the other. Ergo, if one is perfused, the other is, to be gentle, hypoxic. Perhaps a similar phenomenum is at work on an evolutionary scale.... It has been stated that the Creator made men with brains and genitalia, but with only enough blood for one or the other. Ergo, if one is perfused, the other is, to be gentle, hypoxic.

Perhaps a similar phenomenum is at work on an evolutionary scale….

]]> By: Jay http://www.ocellated.com/2006/01/09/the-bigger-the-testicles-the-smaller-the-brain/comment-page-1/#comment-124 Jay Tue, 10 Jan 2006 15:33:31 +0000 http://www.ocellated.com/2006/01/09/the-bigger-the-testicles-the-smaller-the-brain/#comment-124 I have no idea Kelley. I came across the news article, not the scientific paper, so my knowledge is limited. I've often been fascinated how sexual selection can push things in the opposite direction from natural selection. My <a href="http://www.ocellated.com/2005/12/05/evolution/">first post on evolution</a> talks a little of this and gives the example of John Endler's guppies from South America. Back to the bats, I have no idea how females are choosing their mates. The article didn't say, and if they don't know, that would be a very interesting question. ln my post, I simply guessed that if they lack a strong selection pressure for larger testes, then brain size would be allowed to increase and perhaps even favored by natural selection. To put it another way, with my reading of the article, I think it's a good conclusion to say that sexual selection caused testes to get larger and brains smaller. The article didn't say why the reverse happened, and thus I took a guess. I have no idea Kelley. I came across the news article, not the scientific paper, so my knowledge is limited.

I’ve often been fascinated how sexual selection can push things in the opposite direction from natural selection. My first post on evolution talks a little of this and gives the example of John Endler’s guppies from South America.

Back to the bats, I have no idea how females are choosing their mates. The article didn’t say, and if they don’t know, that would be a very interesting question. ln my post, I simply guessed that if they lack a strong selection pressure for larger testes, then brain size would be allowed to increase and perhaps even favored by natural selection.

To put it another way, with my reading of the article, I think it’s a good conclusion to say that sexual selection caused testes to get larger and brains smaller. The article didn’t say why the reverse happened, and thus I took a guess.

]]> By: Kelley http://www.ocellated.com/2006/01/09/the-bigger-the-testicles-the-smaller-the-brain/comment-page-1/#comment-123 Kelley Tue, 10 Jan 2006 12:51:54 +0000 http://www.ocellated.com/2006/01/09/the-bigger-the-testicles-the-smaller-the-brain/#comment-123 How are the females choosing mates in the monogamous species? Does it have anything to do with brain size/function? How are the females choosing mates in the monogamous species? Does it have anything to do with brain size/function?

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