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#26
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Frank
Well and good, but what if you knew that the F0 of snowflakes were "normal" A. ocellaris? No "traits" on them at all? Like Fishboy stated, I feel clownfish don't follow the recognized rules of genetic inheritance when applied to barring/coloration. It is an area that is under investigation, by several labs/peoples, but all the questions have yet to be answered.
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Biology is the only science in which multiplication means the same thing as division. |
#27
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What is it about clowns that they are different from other families and genera that they don't comply with the norm?
Is there some kind of unique genetic variability that they have that sets them apart from other fish? I'm kind of confused by some of the comments so far. I might be in over my head, so can someone let me know anything about some kind of special circumstances when it comes to breeding these things?
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"There's more motion in the ocean." -Leon Phelps [img]http://i10.tinypic.com/48f4i1s.gif[/img] |
#28
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If I remember correctly, I saw a thread not too far back discussing misbarring in captive bred clowns. The gist of it was that bars are formed at a couple of different ages during clownfish development, and that environment can affect bar formation at each of these stages. So it could be possible to produce the exact type of misbarring you wanted if you were able to appropriately control environment through development. Did some searching and found the thread:
http://archive.reefcentral.com/forum...ght=misbarring
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Mark |
#29
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That doesn't necessarily mean that the frye will have the barring you want. I dont think the environment is going to change the genetic makeup of the barring. That would be called evolution, and (although I think it is false) if it was true, it would take many many generations to cause the barring to be in the ideal formation/color/etc.
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"There's more motion in the ocean." -Leon Phelps [img]http://i10.tinypic.com/48f4i1s.gif[/img] |
#30
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If someone's selling them, someone figured out how to make them, right? |
#31
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no, environment won't change the genetic makeup of the fish. But that doesn't mean that phenotypic outcome (how you look) is controlled 100% by genetics. If that were the case, every frag of a given coral would have the same coloration and growth form in every tank. We all know that isn't true. And according to the experiences of a few people in the thread I sited, barring can be affected by rearing conditions- that is, if you rear one clutch from the same parents under different conditions you can selectively see different misbarring. I'm not trying to say that it is always the same for every frye each time, just that a component of bar formation is responsive to environment. That may be why you see so few "snowflake" occellaris- even if environmental manipulations during development are just right, you don't see the same misbar patterns coming through on all frye. If the snowflake color morph were a simle genetic trait, all or most frye from a clutch would show the pattern. Their scarcity suggests otherwise.
Perhaps it is a combination of the two in this case, and TMK ain't talking.
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Mark |
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#33
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#34
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If there are two odd colored clowns (snowflake in our case), then does that mean that their frye will have that same odd coloration? Or is that just merely a coloration based on phenotype?
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"There's more motion in the ocean." -Leon Phelps [img]http://i10.tinypic.com/48f4i1s.gif[/img] |
#35
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Look, we are speculating about the outcome here, and speculation has never been a scientific method. Let's give breeders some time to figure it out and leave guesses (and wrong info) out of the breeding process.
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Marina |
#36
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We could sit here and argue until the clowns come home, but I think the problem here is that we don't actually KNOW enough about clown genetics and the histories of the varieties available. Hopefully some of those studies oama mentioned will help us to better understand this when/if they are published.
As far as the mis-barring, all I know is what I have experienced myself--that I can take a batch of clowns from the same pair, split it in two groups, and deliberately grow one half "normal" and one half "misbarred," which suggested to me at least some environmental component to barring patterns. There is a limit to how much of the striping pattern I can change (that head stripe is hard to get rid of on ocellaris, I have a bunch of o's that look like tomatoes!), but I'm always experimenting... |
#37
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Sorry Marina...posted at the same time--at least we share the same sentiments.
-Matt |
#38
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snowflakes
I read through and could have missed it. There is one and only one place breeding snowflake clowns. They are in England. So far very few are around and nobody else has
a producing pair that I know of. A pair runs about $500 and your LFS may be able to order them. Here is one more picture. |
#39
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First off, I'm not speculating about any outcome, I'm discussing how it's likely done. Secondly, it looks to me like they've alraedy figured it out and are looking to cash in. Good for them. Look, it's not rocket science. Breeding for desired traits is something people have been doing with plants and animals for a thousand years. If you like your clownfish mostly white, shell out the exorbitant amount of cash they're charging for these things. You aren't getting anything all that unique, IMO. Now, cross two different species of clownfish to make something completely new, and that would be something. |
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#41
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Where's the tinfoil hat icon? Quote:
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#42
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Speculation equals referencing one's first cousin's twice removed opinions, uninformed personal guesses, gossip, etc.
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Marina |
#43
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#44
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Please notice that I didn't say speculation was wrong (as you say, can be a good thing, and as a researcher I hope that you understand why (notice my occupation as well...)), but that speculation that could be misinterpreted as fact was probably a bad thing (you wouldn't publish in a peer-reviewed journal (or here I should hope) anything as "fact" until you had something to back it up). Sharing of ideas and experiences is what makes this website great, but we should make sure to qualify our statements so as not to misinform.
Interesting thread started by JHardman on why we won't be seeing "designer" clownfish and clowns developed through artificial selection anytime soon: http://archive.reefcentral.com/forum...ghlight=hybrid I'm surprised that you didn't find any information on the boards since you asked this question a while back: http://archive.reefcentral.com/forum...ghlight=hybrid BUT...there have been some new pairings and juvenile pictures shared. Links to hybrid clown information you requested: frenatus x ocellaris: http://archive.reefcentral.com/forum...ghlight=hybrid frenatus x melanopus (no pictures in this thread, but a friend and I will be sharing some of our own baby pictures when they are old enough http://archive.reefcentral.com/forum...ghlight=hybrid P. biaculatus x A. ocellaris: http://archive.reefcentral.com/forum...ghlight=hybrid For more pics of these, go here: http://archive.reefcentral.com/forum...ghlight=hybrid Not captive bred, but a possible wild P. biaculatus x A. frenatus: http://archive.reefcentral.com/forum...ghlight=hybrid |
#45
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Asking questions is good. Making wild speculations is not.
There is a difference. As an example... "Are they back breeding/inbreeding these fish to get Snowflakes?" "They are inbreeding the fish to produce Snowflakes." The former is an inquisitive question. The later wild speculation. From the history of remarks about these fishes here on RC, there tends to be much more of the later. And, in fact, that, TTBOMK is wrong. Only one pair produces this variant. No offspring have been noted as being spawning as of yet. So that eliminates inbreeding. Also, the parents are "Normal" A. ocellaris. As in that they show no signs of extra white. So, selective breeding is ruled out. Only a low percentage of the offspring are Snowflake. This is TTBOMK. From my personal experience of pairing/spawning/rearing clownfish, I have found that they do not follow what is "normal" genetic traits as far as coloring/barring is concerned. Yes, misbarring can be induced. You have to understand the process. Barring starts with the head bars, then the mid bar and finally the tail bar (in most cases, speaking of A. ocellaris/percula). Mostly, all this occurs during the larval stage. If conditions are right (aka bad), this process can be interrupted. AIUI, the process is run genetically, but the process can be interrupted to produce mis-barring. Genes are turned on to produce the white bars. But if they are interfered with, the process is not completed or never turned on. As all fish/fry in a clutch mature at different rates, this makes it very difficult to produce a high percentage of a desired mis-barring. Thus the vast variation, if this happens. One must also take into account that the vast majority of wild clown fish spawns do not survive to settle out. The percentage of survival is vastly greater in a captive environment. So, you would expect to see variations that one does not see in the wild. Often mild deformities that would be lethal in the wild do survive in a hatchery. Namely, missing operculum. Which has been seen through out mariculture. From clownfish to redfish (a food/gamefish). I have no experience with spawning Snowflakes A. ocellaris, as they are only produce from England. I do have various experience with other variants such as Naked A. ocellaris and Picasso A. percula. And I can say that genetics play a much more major role than "induction". Though, as stated before, these fish do not follow the regular "recognized" rules in inheritance. Or if they do, it is above my head. At this point in time, I would say that we just don't know enough about the process. White stripes, extra or misbars, are a phenotype (an outward expression of the genes). We just don't know enough about the process in this family. Stepping off the soap box....
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Biology is the only science in which multiplication means the same thing as division. |
#46
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Thanks oama, very helpful.
I did pick up a pair of Naked clowns--it will be interesting to see what their offspring look like if I am ever that lucky... I know someone will ask TTBOMK = to the best of my knowledge AIUI = as I understand it |
#47
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This thread is drifting far from its original focus, but hopefully, some will find this information of interest.
One thing I forgot to add to my last post. The extra barring is thought to be the result of the signals to turn on the barring pigmentation going out of control. Starting early and/or not being shut off at the right time. Think of it as if the fish is scanned from head to tail very slowly. Or slowly moving down a assembly line with a white spray paint at one point. If the fish is 100 units long... The signal to turn on the white pigment goes something like this... Signal On at 27 Signal Off at 30 Signal on at 48 Signal off at 52 Signal on at 78 Signal off at 80 What is not know is what controls these signals. Or even what those signals are. The signals have been shown to be interrupted by environmental factors. But the additional firing/signaling has not been shown to be effected by these factors. As with most of these fish, they have not really been inbred/back bred/selectively bred all that much (if at all). So not enough information is out there as to know what the F2 or greater will look like.
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Biology is the only science in which multiplication means the same thing as division. |
#48
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Number two, my original statement was that an intrepid breeder could probably produce something like this easily. I was asked how that could be done and I explained how it could be done. Nowhere did I say "This is how the people selling snowflake clownfish made them." I said they must have figured out how to make them since they're selling them. Just because these particular folks aren't specifically pairing fish and then crossing the young to get the desired patterns (with or without some form of external pressure) doesn't mean that it can't be done that way. Face the facts, man. That's the way it's done with every other species of plant or animal that's been produced by humans since it's been done. Last edited by Frank Mularo; 01/28/2006 at 10:43 AM. |
#49
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Folks seem to have their opinions, and discussion of such opinions is within the rules. The issue with conjecture in a "authoritative" medium is that the conjecture is later treated as fact and obscures the truth. Welcome to the internet.
Some on this thread have crossed the line by using profanity and launching personal attacks. Neither are within the User Agreement or within the stated mission of Reef Central. Let's try to stay on topic, within the rules, and accept that fact none of us know everything about breeding clowns, but there are a couple on this thread that are well beyond "hobbyist level" in clownfish breeding experience. Thanks.
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Scott |
#50
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Here is a very easy experiment to demonstrate that environment impacts bar development in juvenile clown fish.
Take a group of juveniles (just post larval stage) and split group in half, taking photos of the two populations. Place the two groups in two different environments - i.e. keep one group in a commercial breeding grow out tank, and take the other group and place it in a floating grow-out cage in someone's reef tank. Use the same food and feeding frequency if you can. Compare the two groups after a couple of months have gone by. I have done this and come out with VERY different results where the two groups looked like they came from completely different parents. I don't have photos, but the group in the reef tank colored up much more quickly, had much more extensive black coloration, and had completed bar development much more quickly than the other group. (And some individuals in the first group never completely developed three bars). Why? I don't know. It was too difficult to control the two environments so that you could only tweak one variable. One of the tests I had wanted to do at some point was create a dual grow-out tank setup so that you could run the same water, food, etc, and test different lighting, different foods, etc, individually to determine best results. Just thought I'd add this to the discussion.
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"You are a very fine person, Mr. Baggins, and I am very fond of you; but you are only quite a little fellow in a wide world after all!" - The Hobbit; J. R. R. Tolkien |
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