|
|
|
Group: Moderators
Last Login: 10/24/2009 6:22:06 PM
Posts: 4,635,
Visits: 7,231
|
|
| I know that an iodine deficiency can cause goiter in sharks. Anyone aware of any studies that show iodine deficiencies leading to other ailments in marine fish? Thanks.
Kelly
|
|
|
|
|
Group: Forum Members
Last Login: 6/28/2008 11:19:52 AM
Posts: 81,
Visits: 520
|
|
| I don't have access to my files. There are studies that show that Iodine is needed for invertebrates to successfully go through their molt. I also know that iodine or iodide elemental forms is one of the essential elements needed by fish. There have been studies of seawater, void in iodine, effects on marine fish egg development. When marine fishes are analyzed, there is an appreciable content of iodine. Enough to make marine fishes a good source of iodine for humans. Iodine is fundamental to fish growth. It begins with the eggs. It seems that iodine in seawater has an effect to both cleanse the eggs and provide the unborn fishes with the needed amount of iodine to launch their metamorphesis into larval and subsequent stages. Then after that, iodine continues to play a role in fish growth, accumulating in the fish's organs.
Lee
|
|
|
|
|
Group: Moderators
Last Login: 10/24/2009 6:22:06 PM
Posts: 4,635,
Visits: 7,231
|
|
| Lee, Have you seen/heard anything regarding iodine deficiency causing inability to masticate in fish? Thanks.
Kelly
|
|
|
|
|
Group: Forum Members
Last Login: 6/28/2008 11:19:52 AM
Posts: 81,
Visits: 520
|
|
| No. Sorry. Most fish I like don't masticate so much as they rip their foods to shreds (thrashing) before swallowing whole. 
Lee
|
|
|
|
|
Group: Moderators
Last Login: 10/24/2009 6:22:06 PM
Posts: 4,635,
Visits: 7,231
|
|
| The reason why I ask is there is "information" being passed around that feeding freeze dried krill causes iodine deficiency in puffers which leads them not to be able to masticate and appears to have lock jaw. I have asked the people passing along this information and they have yet to provide a study or factual reasearch. If you come across anything, I'd really like to see/read. Thanks.
Kelly
|
|
|
|
|
Group: Forum Members
Last Login: 6/28/2008 11:19:52 AM
Posts: 81,
Visits: 520
|
|
There's no doubt (in my mind) that krill need iodine. Thus I'd make the assumption that krill would have iodine in their body. I don't know why, during a 'regular' freeze drying process the iodine would be lost. I'd say the 'information' is a bit of a stretch.  The matter might be resolved simply by getting a reliable analysis of freeze dried krill. Because the 'information' implies that there isn't iodine in the krill. If there is iodine in the krill (which I suspect) then maybe it isn't enough for the puffer fishes? But someone would have to unequivocably state how much they need. I've sent an e-mail to Hikari and asked what the iodine content is in their freeze dried krill. Might get a response. 
Lee
|
|
|
|
|
Group: Moderators
Last Login: 10/24/2009 6:22:06 PM
Posts: 4,635,
Visits: 7,231
|
|
| Thanks Lee! The next question would be what is the iodine requirement for puffers ?
Kelly
|
|
|
|
|
Group: Forum Members
Last Login: 1/23/2009 9:10:14 AM
Posts: 106,
Visits: 185
|
|
I personally feel that iodine deficiency is a possible cause of gill plate deformities in clownfish.
I'm currently researching if gill plate deformities in juvenile Amphprion sp. can be reversed through iodine supplimentation.
Prisoner Number 3315
On parole for reef keeping
Currently doing "time" in a medium security breeding facility for the terminally insane
|
|
|
|
|
Group: Moderators
Last Login: 10/24/2009 6:22:06 PM
Posts: 4,635,
Visits: 7,231
|
|
| Very interesting - please let us know your findings! Are you dosing the tank or adding iodine to the feedings? What dosage are you using? Are these clowns that have congenital deformities or ones that develop deformities while in captivity ? Any correlation between the deformities and high nitrates ? Have you seen any research done on iodine deficiencies in marine fish ? What about specific species requirements for iodine? Thanks for sharing/contributing.
Kelly
|
|
|
|
|
Group: Moderators
Last Login: 2 days ago @ 6:23:19 AM
Posts: 572,
Visits: 2,512
|
|
Hi Kelly-
Hopefully i didn't start the rumor, however I have issues w/ exclusive diets consisting freeze-dried krill. I've address why too many questions from lionfish owners who have used the "ole" freeze dried krill to make it the main staple of the lions diet and after 6-8 months the lion stops eating.
The freeze drying process removed not only water but many micronutrients in the krill and makes the food a nutritionally incomplete food source. In lionfish this usually results in goiters and inability to swallow-possibly due to impingement on the esophogus. I say this because use of dietary iodine will frequently reverse the condition, suggesting a causative effect.
Now lock jaw i'm not sure of.
Have their been studies done on nutritional requirements of marine ornamentals? if so there can't be many
Frank
-----------
"We are continually faced with a series of great opportunities disguised as insolvable problems."- John Gardner
|
|