[go] otolith mineralization

[David Hill]

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
>>>
>>>
>>>       
>>     
>
>
>