Is it possibal to have a fish artificially inseminated?

[Mother Yoda]

I asked this question a while ago and told I should ask about it here. So my question is this would you be able to have a fish (a large one to exact such as puffers, groupers, triggers, eels, etc) to be artificially inseminated? I hope this is not a dumb question

 

[FMarini]

MYoda-
its not a dumb question, but its a question thats readily answered by----
theres no reason to "artifically insenimate" fish. They don't use any internal structures for pairing of zygotes. Fish release unfertile eggs, and the eggs are fertilized by neighboring males ex vivo. Sharks and a few other fish actually inseminate, but none of those fish you ID'd do.
I'm wondering if your actually asking the question- do female fish need to be hormonally stimulated to produce eggs? I've read that some hatcherys use hormone injections (LHRH, gondatropin, etc) into female fish to stimulate the egg production process

 

[Mother Yoda]

<a href=showthread.php?s=&postid=9148696#post9148696 target=_blank>Originally posted</a> by FMarini
MYoda-
its not a dumb question, but its a question thats readily answered by----
theres no reason to "artifically insenimate" fish. They don't use any internal structures for pairing of zygotes. Fish release unfertile eggs, and the eggs are fertilized by neighboring males ex vivo. Sharks and a few other fish actually inseminate, but none of those fish you ID'd do.
I'm wondering if your actually asking the question- do female fish need to be hormonally stimulated to produce eggs? I've read that some hatcherys use hormone injections (LHRH, gondatropin, etc) into female fish to stimulate the egg production process

Thanks for the info and yes, when I was asking about artificially inseminate I was really meaning using hormone injections on them but... then again I don't think (unless if am wrong and if so please tell me) that any of the thing you mentioned would be commercially available... or are they?

 

[David M]

Oh yes, definately available and commonly used in food fish aquaculture. In fact I was just reading an article on captive breeding of various grouper species using injected hormones to improve spawn sizes. Really got me thinking about some of the smaller groupers as candidates for moa.

I subscribe to Aquaculture magazine. It very rarely has any articles on marine ornamentals and is primarily geared towards finfish and shellfish production for food. Still, it is very informative and a fascinating read, and you get exposure to companies and products you don't even know exist

I highly reccommend that every breeder include this mag in your subscriptions, it's certainly not essential reading but it will get you thinking. The sheer magnitude of commercial aquaculture systems will humble you, we measure our production in numbers, they measure thiers in TONS :eek1:

 

[Dman]

I also subscribe to Aquaculture magazine, it has some very interesting stuff from a breeding perspective, almost completely useless to us marine ornamental breeders, but gives some insight as to where we might be in 40 or 50 years.

Hoff goes into some detail as to where and when in the cycle to inject hormones.

 

[Kathy55g]

My friend at the University raises zebrafish for his research. It is a genetics lab, so you can imagine how important it is to control the breeding. They actually anesthetize the female, express the eggs into a culture dish, anesthetize and express the sperm from the male, and mix and incubate the eggs until hatch. My friend claims to be better at zebrafish sex than they are. He gets a very high yield this way.

Just an interesting tidbit...

 

[Mother Yoda]

<a href=showthread.php?s=&postid=9150435#post9150435 target=_blank>Originally posted</a> by Kathy55g
My friend at the University raises zebrafish for his research. It is a genetics lab, so you can imagine how important it is to control the breeding. They actually anesthetize the female, express the eggs into a culture dish, anesthetize and express the sperm from the male, and mix and incubate the eggs until hatch. My friend claims to be better at zebrafish sex than they are. He gets a very high yield this way.

Just an interesting tidbit...

So I am correct in the assumption that something like that would not be possible to do outside by a regular hobbyist right? If it is possibal though I wonder how I would go around doing this and if it would be worth it to do this.

 

[Kathy55g]

You could do it as a hobbyist if you knew the optimal conditions under which the eggs could be incubated before hatch, and if you knew how to anesthetize the parent fish.

 

[Kathy55g]

also, saltwater fish might not work the same way as freshwater fish. I don't know.

 

[clownfish75]

I have injected 2 pairs of clownfish before with hormones, i didnt find any result but didnt try any experiments.

I have no doubt it would work effectively

Christian

 

[bandeng]

If my understanding is right, the following is the basics of the hormone treatment.

You must know at what stage of the development your fish's gonads are. Then you must choose the right hormone effective to the particular developmental stage. There are roughly two stages in the development of female gonad. The first is to store the yolk, made in the liver, into the egg. And the second is the final maturation at which the yolkfull of the eggs absorb water to enlarge themselves almost twice the previous diameter. Usually the hormone injection is for the inducement of the second stage and some gonadotropic hormones like gonadotropin (HCG) are used. You may guess the development is the end of the first stage by noticing the female's swellen belly. Then inject and wait for usually 48 hours before taking the eggs out. Finally, inseminate them. But pre-matured or over-matured egg will not give you good fertilization. So the timing of the insemination should be very important for this treatment.

Bandeng

 

[FuEl]

<a href=showthread.php?s=&postid=9158082#post9158082 target=_blank>Originally posted</a> by clownfish75
I have injected 2 pairs of clownfish before with hormones, i didnt find any result but didnt try any experiments.

I have no doubt it would work effectively

Christian

Cause..the fish died after the needle impact? :lol:

 

[Luis A M]

<a href=showthread.php?s=&postid=9157889#post9157889 target=_blank>Originally posted</a> by Kathy55g
also, saltwater fish might not work the same way as freshwater fish. I don't know.

Oh,yes,they do SW fish have been stripped and art.fert.almost as long as FW,since XIX century,I think.You need big pelagic spawning fishes.Mostly food fish,but that`s how Martin M.spawned large atlantic angels.
But why do that?.Many marines spawn spontaneously,raising the larvae is what`s all about