[acestro]

Well, the experiment Barlow did a while back was analyzed and replicated.

The guy was from U of Mich, cant recall his name...

But he essentially showed that behavioral sex determination (dominant fish becoming male) is out and is likely out for all central americans at least.

Kinda cool, thought I'd share...





Ah crap, can someone move this to scientific, I goofed up.

Where are my magic powers to move threads? THey're GONNNE!

This post has been edited by acestro: 30 July 2006 - 07:28 PM

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[MR.FREEZ]

[Atlanta Braves Baby!]

:laugh: It wont let me move it either

This post has been edited by Atlanta Braves Baby!: 30 July 2006 - 08:20 PM

[GT45FD3S]

Very cool info. Would like to see more on it..

[acestro]

The work was done on midas cichlids... let me look for it..

Well... here's the "old" way of thinking (last part of the article)

http://cichlidae.com...icle.php?id=100


I think the new research was done by a guy named Oldfield?

[MR.FREEZ]

so going by the way that article sound i could,

if prepared properly, buy one midas, control the

water and diet and i'd have a high chance of

getting that big male i wanted, or would i have to

have at least two, that way the bigger one would

"decide" to become a male. that would help save

money on buying a bunch of fish a praying for a

pair right?

[acestro]

MR.FREEZ, on Aug 1 2006, 07:02 PM, said:

so going by the way that article sound i could,

if prepared properly, buy one midas, control the

water and diet and i'd have a high chance of

getting that big male i wanted, or would i have to

have at least two, that way the bigger one would

"decide" to become a male. that would help save

money on buying a bunch of fish a praying for a

pair right?

I was afraid that posting that first article would cause confusion. That is the old way of thinking. Evidence shows that it's a coin-flip, just like with human beings.

[lament configuration]

so what is the molecular explanation for the coin flip theory since fish do not have sex determining chromsomes like humans? assortment and segregation determine where the X and X/Y chromosome go in humans but how does this work in fish?

[acestro]

Well they've actually found sex chromosomes in some fishes, including tilapia for one. The catch is size. A lot of fish chromosomes (I dont know why) are really really small, making karyotyping kinda tricky.