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Old 02-25-2012, 04:09 PM   #1 
BeautifulBetta
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Male Vs. Female Ratio

Hey guys,

I've heard from a few different breeders in the past and recently, that they'll often get more females than males in a spawn, but I've never heard that theres more males. Has anyone else heard this or know from experience? I'm kinda curious. One spawn that stands out most that I heard of, was there were 64 fry, and only 4 were male, which is freakin' crazy.
Any info would be cool :) Its very interesting!
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Old 02-25-2012, 05:54 PM   #2 
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That a big off set
But usually more female then male in each spawn
I've have heard younger female throw more male and virgin female
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Old 02-25-2012, 10:40 PM   #3 
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How fascinating! I wonder why that is lol
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Old 02-25-2012, 10:57 PM   #4 
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I mean virgin female throw more male
There is a guy on this form that know a lot more the me on this subject n a lot of other thing
:)
Indjo
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Old 02-26-2012, 12:46 AM   #5 
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I am actually going to be testing this theory.

OFL said that it is either a young female to an older male produces more males to females or Vice Versa.
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Old 02-26-2012, 10:36 AM   #6 
indjo
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There are many beliefs on this topic.
1. Such as the sex will be more to the younger sex - more males if male is young, more females if females is young.
2. Temp. plays a role on sex outcomes - lower temps will produce more females.
3. The first three spawn (female) will produce more males, thus female will be culled after her third spawn.

I rely on belief 2 and 3. A first spawn during the hot season may produce 90% males (my highest). 2nd and 3rd spawn during hot season may produce 40-60% males. 4th spawn during hot season = below 30% male.

2nd and 3rd spawn during cold season may produce 60-90% females (I have 3 spawns like this). 4th and more spawn during cold season = 90% females.

I'm still waiting for a first time spawn during cold season to grow. Will have results next month or so - if they survive.
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Old 02-26-2012, 02:16 PM   #7 
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I could see temperature being a candidate, I've actually heard the same about human babies. Good luck on your spawn! :) Be sure to let us know what you find!
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Old 02-26-2012, 02:34 PM   #8 
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here's some info about the age theory.
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Old 02-26-2012, 02:48 PM   #9 
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Thanks Tisia!! I'll have to give that a read :D
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Old 02-26-2012, 03:00 PM   #10 
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Quote:
Originally Posted by indjo View Post
There are many beliefs on this topic.
1. Such as the sex will be more to the younger sex - more males if male is young, more females if females is young.
2. Temp. plays a role on sex outcomes - lower temps will produce more females.
3. The first three spawn (female) will produce more males, thus female will be culled after her third spawn.

I rely on belief 2 and 3. A first spawn during the hot season may produce 90% males (my highest). 2nd and 3rd spawn during hot season may produce 40-60% males. 4th spawn during hot season = below 30% male.

2nd and 3rd spawn during cold season may produce 60-90% females (I have 3 spawns like this). 4th and more spawn during cold season = 90% females.

I'm still waiting for a first time spawn during cold season to grow. Will have results next month or so - if they survive.
Ok, now, I'm really intrigued!! So much info on the website!!!
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