Does gender effect which physical traits are passed on?

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floydlevi

Feeder Fish
MFK Member
May 24, 2012
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Florida
If you were to hybridize two pairs of fish, would the phenotype of the fry be affected if you used opposite genders of the same fish? male Salvini x female Firemouth vs. female Salvini x male Firemouth
 
It depends on how the genes of the fish dominates another, most of the times the female is much more stronger... Depends also how husbandry plays, stress, age...
 
floydlevi said:
So gender doesn't make much of a difference?
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It does...

floydlevi said:
Do certain genes only come from the father or mother?
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Depends really, let's say you're into a hybrid project, Texas x Flowerhorn, if the mother's a FH, definitely the baby will be a FH, topping with Texas' genes, it may add some color/ stripes/ or shape to the FH.
 
Oh alright. So my F firemouth and M salvini's first batch would grow out to look more like a bunch of firemouths with hints of salvini.

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This question is complicated... If what was said about females genes being more dominant was true, then all/most of blood parrot crossed with texas would mostly produce short body faders with some having pearls. Most of the hybrids I have raised with this cross aren't shortbody nor do most fade. With that said... I do realize that the bp is a hybrid in itself but it doesn't produce many(or any) fry like it at all. I don't have much experience with 2 pure breeds hybridizing so I'm just speaking on what I've experienced. This info makes me wonder... If one was to take a female texas and breed it to a male amph, would they produce more pearly fish vs faders? Or if one used a female amph and a male texas, would they have more faders than fish with pearls?
 
E.C. said:
It depends on how the genes of the fish dominates another, most of the times the female is much more stronger... Depends also how husbandry plays, stress, age...
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Sorry but no just because a fish is a female it has no effect at any time on the strength of a individual fishes genes. So no female genes are not most times stronger. Also age,stress and husbandry plays no part in the genetic make up of a fish or what it passes on to it's progeny.


@floydlevi, yes sex can affect what is passed on to an animals progeny but it is due to what is carried on the different chromosomes. For instance being color blind is a trait that is carried on the X chromosome not on the Y. So a male only needs his one X chromosome to carry the trait for it to be expressed since he only carries one X and one Y chromosome, while a female would need both X chromosomes to carry the trait for it to be expressed. As such men are more likely to be born color blind than women and women are capable of carrying the gene without expressing it while males can't. The same is true of other genes and can be applied to fish, but it would require mapping of a mated pairs genetics either through a lab or through multiple breeding's of the same fish to get a decent idea of what traits are carried on what chromosomes. There's also a plethora of other factors such as dominance and co-dominance but explaining it further may just muddy the waters of what I already explained here for you. Presently if anyone is doing any non lab related mapping in the hobby it's probably professional Flowerhorn breeders who are constantly trying to track expressed traits in their FH's to get what they consider a more attractive fish. They how ever are tight lipped as developing more attractive fish is the basis of their business which is why to this day we're unsure of what a Blood Parrot is the progeny of. Many feel they have an idea of what went into creating BP's but I've yet to see any produced from scratch by a common hobbyist. Hope that helps some, sorry I couldn't tell you more detailed info. that may help with your hybrid breeding. I can only wish you luck and tell you if you want to be successful keep notes on everything and be thorough in your breeding's to make sure you get a good idea of what any pair of fish has the capability to produce.
 
koltsix said:
Sorry but no just because a fish is a female it has no effect at any time on the strength of a individual fishes genes. So no female genes are not most times stronger. Also age,stress and husbandry plays no part in the genetic make up of a fish or what it passes on to it's progeny.


@floydlevi, yes sex can affect what is passed on to an animals progeny but it is due to what is carried on the different chromosomes. For instance being color blind is a trait that is carried on the X chromosome not on the Y. So a male only needs his one X chromosome to carry the trait for it to be expressed since he only carries one X and one Y chromosome, while a female would need both X chromosomes to carry the trait for it to be expressed. As such men are more likely to be born color blind than women and women are capable of carrying the gene without expressing it while males can't. The same is true of other genes and can be applied to fish, but it would require mapping of a mated pairs genetics either through a lab or through multiple breeding's of the same fish to get a decent idea of what traits are carried on what chromosomes. There's also a plethora of other factors such as dominance and co-dominance but explaining it further may just muddy the waters of what I already explained here for you. Presently if anyone is doing any non lab related mapping in the hobby it's probably professional Flowerhorn breeders who are constantly trying to track expressed traits in their FH's to get what they consider a more attractive fish. They how ever are tight lipped as developing more attractive fish is the basis of their business which is why to this day we're unsure of what a Blood Parrot is the progeny of. Many feel they have an idea of what went into creating BP's but I've yet to see any produced from scratch by a common hobbyist. Hope that helps some, sorry I couldn't tell you more detailed info. that may help with your hybrid breeding. I can only wish you luck and tell you if you want to be successful keep notes on everything and be thorough in your breeding's to make sure you get a good idea of what any pair of fish has the capability to produce.
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Nice response Kolt... I agree but I just didn't have that knowledge to break it down like that. But as far as the blood parrot's creation... Check out this thread.

http://www.monsterfishkeepers.com/f...as-x-Synpilum&highlight=blood+parrot+creation

Now within the thread they show pics of fry from a rd/midas male and a syn female. SOME of them don't seem to be as round(most bp's are round from any angle you view them) or have that triangular mouth. But the main cross was done with a male syn and a female rd/midas. So with that being said maybe the sex does play a part? They either line breed after the initial breeding(as stated within the thread) OR there is a huge culling process to only sell ones that have the triangular mouth.
 
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