brothers got sisters pregnant

[sylvia]

I just wanted to comment on this:

"Really I dont think animal r like us human they just simply dont know anything at all. But eat/produce waste/sexing/getting ill/and eventurally die from old age. "

First of all, not all animals will inbreed. Some have instincts or behaviour that guards against it. Others, like wild guppies, wouldn't be able to breed with their siblings even if they wanted to because the chance of it happening is low. Regardless of how, the reason they evolved this way is because it benefited their species and ensured its survival. Secondly, I do believe that some (human) religions/traditions don't take in-breeding to be a bad thing and that you are allowed to have kids with quite close relations. I also, however, don't think any of this has anything to do with 'knowing' stuff. If humans have any natural tendencies to not breed with siblings, its more likely to be an inherited and instinctive thing than one created by society or 'rules'. I mean, there must be a reason those 'rules' exist in the first place. The best explanation for this is that it was a natural reaction by humans in the past to think of 'in-breeding' as something wrong so we ended up with it as a 'rule'. It was simply in the interest of the human species to evolve so that we did not take to in-breeding so we ended up similar to all those other animals that avoid in-breeding. It's far more complicated than that but this is quite irrelevant as far as the guppies are concerned so I won't get into it. When it comes down to it though, we humans are governed by our DNA just as much as other animals. We aren't all that special.

 

[AllusiveLife]

I see it this way...

You have the Italians
You have the Germans
You have the French(unfortunately)
You have the Spaniards
You have the English etc


Without opening up to other countries or allowing them to populate your country, you will infact inbreed. And over a period of generation's, people will start looking similar or having very close relation's that helps one assume where you're located or where your family originally came from.

But with me being
English Irish Scottish Welsh Dutch Hungarian Austrian German (I am mixed) But I tend to show German/British the most...



Long story short, I always add another guppy from a different family once in a while to make things even...

 

[Tokis-Phoenix]

They say that the large majority of genetically passed on deseases in humans like autism and gentic cancer for example are because of inbreeding in our earlier past.

There are alot of deseases/disorders from inbreeding that are already present in guppys from their extensive inbreeding which are coming more and more common all the time.

I am always checking on my livebearers making sure they have a good gene pool and never let any breed with each other that are or could be related .

 

[Katie]

how do you make sure that your brother and sister guppies don't interbreed?
do you have a seprate tank for males and females and a different breeding tank?

katie

 

[Annastasia]

The day they are old enough to be sexed definitively, seperate them. Do not wait, as this is what will hurt you. Usually you can sex them pretty early, if you just look for a small black spot gravid spot on the girls.

And yes, you need seperate tanks. You can grow them up some together, but then you have to seperate them. Also, frequently check the female tank, because males can look like females for a while, then on day get their gonopodium and BOOM. Every girl in the tank is pregnant.

 

[dwarfgourami]

Just to add to the above: the human taboo against incest is just as much social as eugenic. Our behaviour is governed to such a great extent by knowing exact relationship, do I behave to this individual as my daughter or my wife, it makes an enormous difference. That's why people felt uncomfortable about Woody Allen getting off with his adopted stepdaughter, though there was obviously not the slightest reason to worry about genetic problems; it's about trust and family structure.
For guppies social structures don't work this way: all they need to know about their relatives is whether they are small enough to fit in their mouths or not!
It seems clear that inbreeding over generations has weakened the species, but it is unlikely that one more go at it will have disastrous results. Just something you will want to avoid on principle in the future.