[go] otolith mineralization

[Jennifer Deegan (nee Clark)]

Hi David,

This is the information contributed by Doug on the wiki:

otolith mineralization (sensu Actinopterygii)
otolith mineralization (sensu Tetrapoda)

"I believe the initial introduction of the 'sensu Actinopterygii' term 
was because fish otoliths continue to grow throughout the life of the 
fish. It was my understanding that this was not true for tetrapods. If 
this distinction doesn't hold water, then perhaps a merge could happen."

I'm trying to track down the difference in timing of mineralization.

Jen





David Hill wrote:

> Evelyn and Jen,
>
> It seems like there may be some confusion with the different sensu 
> types here. Did we make the different fish and tetrapod terms to 
> discriminate the timing of mineral deposition? How similar is the 
> process of mineralization in fish and tetrapods?
>
>
> David
>
>
> camon at ebi.ac.uk wrote:
>
>> Hi Jen,
>>
>> I used to slice otoliths when I worked for the dept. of marine many 
>> moons
>> ago. You can read Otoliths like the rings of a tree to age fish. They 
>> are
>> used for growth determination and to determine fishing quotas.
>>
>> I'm no expert on their mineralization but I think it happens throughout
>> their life.
>>
>> Evelyn
>>
>>  
>>
>>> Jen,
>>>
>>> I think the initial mineralization only takes place once.
>>>
>>>
>>> David
>>>
>>>
>>> Jennifer Deegan (nee Clark) wrote:
>>>    
>>>
>>>> Hi,
>>>>
>>>> Does anybody know if the otoliths of taxa under Tetrapoda continue to
>>>> grow throughout the life of the organism? We need to figure this out
>>>> in order to better define some of the old sensu terms.
>>>>
>>>> otolith mineralization (sensu Tetrapoda)
>>>>
>>>> def: The formation of otoconia by precipitation of specific crystal
>>>> forms of calcium carbonate around an organic core of extracellular
>>>> matrix proteins. Otoconia are small (~10 micron) dense extracellular
>>>> particles present in the otolith end organs of the vertebrate inner
>>>> ear. As in, but not restricted to, the tetrapods (Tetrapoda,
>>>> ncbi_taxonomy_id:32523).
>>>>
>>>> Thanks,
>>>>
>>>> Jen
>>>>
>>>>
>>>>       
>>>
>>>     
>>
>>
>>
>>   
>
>


-- 
Jennifer Deegan nee Clark
EMBL-European Bioinformatics Institute
Gene Ontology Consortium