Am I crazy? Hybrids

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Sorry we seem to never consider what public aquariums have done with rays and give them any due credit. With 20+ years of captive breeding in public aquariums you think there could be F3 pups swimming around out there?.
 
f0 is wild , f1 is first generation in captivity, and so on, has nothing to do with line breeding
 
I can't figure out why people care. :confused:
 
One thing to note is you can hybridize a ray and the offspring will take on the pattern of one ray or the other.. and sometimes create a few random pups that will have sporadic patterns. These 'sporadic' pattern rays are the 'ooo-aahhhh' amazing ones we keep seeing from Asia.. apparently only about 10% of offspring will have these patterns, and that is why they call them 'SP' - "Special." - Thus, they are considered MUCH MORE rare and increase the value.

When I was researching 'SP' rays that they are developing in Asia, I came across some interesting info.. You cross a Leopoldi with a Motoro, and you get a bunch of rays that look IDENTICLE to Motoros.. but when you take that Motoro looking offspring and cross it back into Leopoldi, you get all pups that look IDENTICLE to Leopoldi.. They use this method because Motoros are more prolific and have an increased birthing capacity.. I suspect they use this method with P14 Itaituba Rays and Castexi Otorongo rays to bring out MANY more spots than the wild caught P14 - Imagine if you had a female Castexi that produced P14.. and not just 2 or 3, but like 8-10 at a time. Simple business - This increases profits 10 fold.

The problem is people will be selling rays that have %75 Leopoldi x 25% Motoro as PUREBREEDS.. but they are not.. and it would be pretty disgusting if you were to pay big bucks for a purebreed and try to breed it with another purebreed, and some of your pups turn out as ugly little mutt leopoldi's with a weak black coloration that never matures due to it's poor genetics..


food for thought :D
 
lincolngoh;2088819; said:
I think there is a need for both hybreeds and pures to coexist.

To say either is bad is kinda going Nazi. Are you the kind of people that frowns upon mixed marriages too? :screwy:


:screwy::screwy::screwy::screwy::screwy:

if the hybrids happened in the wild no problem but they seam to have happened more and more since rays have been kept in captivaty

so that shows us that hybrids are happening due to man
 
X-Ray;2088726; said:
P is the parental generation.
The F1 (first filial) generation consists of all the offspring from these P parents - their children. F1b would be a backcross between a P generation and an F1 generation
The F2 (second filial) generation consists of the offspring from allowing the F1 individuals to interbreed - the grandchildren of the parental generation. F2b a backcross between F1 and F2. F3 are the product of F2 x F2 etc.
BTW, when you get to F2 breeding, this is when genetic faults start to show up
All to do with line breeding.


F1,F2 and F3 has no inbreeding at all. To get F1 pups you would simple take two wild caught adults breed them now those pups are F1. Take two F1 pups not related in anyway shape or form and allow them to breed, producing F2 pups from a pair of F1 parents with no inbreeding. To get F3 pups you breeding a pair of F2 pups from different parents and now you have F3 pups. I have never heard of F1b? Is that b represent inbreeding? and if it does involve inbreeding it's the first time I have ever heard of it.
 
X-Ray;2089508; said:
2 unrelated F1 pups do not give you F2, they give you F1 again. F2 is ONLY achieved through a crossing of 2 F1 from the same grandparents. F1b or F2b etc is from backcrossing, ie: F1xF2=F1b. These are the correct Biology definitions. Look it up, I had to again to clarify my info
:) LOL

http://www.biology-online.org/dictionary/F2_GENERATION

http://www.biochem.northwestern.edu/holmgren/Glossary/Definitions/Def-F/Filial_generation.html


http://www.answers.com/topic/f1-hybrid

designer dogs
http://www.dogbreedinfo.com/designerdogs.htm

Good info learn something new everyday. So can't call any of my pups F???? cause I don't inbreed so what do you call the same pups if there all from different lines like I was talking about?
 
X-Ray;2089622; said:
You have generation P and F1 ( from P), each time you breed 2 unrelated (P) rays you get F1.

im no expert in this but i think you are wrong hear

each time you get a new generation of cative bed rays or other fish it moves on from F1,F2 or beyond

thats why arowana certs state F2 and beyond

if what you are saying is true then all captive bred arowana are inter bred as the cert states F2 and beyond meaning that captive bred arowana have been bred further than F2

yes or no or the aro cert is wrong :confused:

Aro birth cert.jpg
 
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