Dear list members,
I'm intrigued by the current distribution of C. intestinalis. There are some
reports stating that this species was frequently found in some regions on
brazilian coast a few decades ago, specifically Rio de Janeiro and Santos. I
have recently conducted surveys in many points along our coast and was
unable to find a single specimen. It seems to have disappeared from our
waters, or at least diminished considerably its numbers.
Why an efficient invader like C. intestinalis has not succeeded in brazilian
coast?
Tito
--
_______________________________________________
Tito Lotufo
Departamento de Zoologia - IBUSP/Cebimar
Fone/FAX: (0XX85) 261-4721
e-mail: [log in to unmask]
on 21.01.02 14:09, Bill Bates at [log in to unmask] wrote:
> Dear Martina,
>
> You have raised an very important question that ive often thought
> about. What is the global impact of biologists who work on "imported'
> species on actually contributing to the big problem of introducing
> new invasive species? Obviously this is happening, but to what extent?
> Yes, it's always wise to simply to do the live expts with local
> animals at an appropriate marine lab and then do all the molecular
> work etc at one's home lab whenever possible.
>
> Of course, if one is really careful not to accidently release
> fertilized eggs then there's a low risk factor. I'm sure that C.
> intestinalis would thrive in our NW Pacific waters if given a
> chance!!!
>
> Bill
>
>
>> Dear Dr Swallow- could you please be a bit more specific about which
>> docks Ciona grows on in the Puget Sound region. While it is
>> deplorable that species like Ciona are being spread around the world
>> to places they dont belong it would be very convenient fo
>> r experimenters if we could get Ciona locally, or other favorite
>> experimental ascidians like Halocynthia - not that I am suggesting
>> we should ever import them deliberately! Martina
>>
>> --
>>
>>
>>
>>
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> --
> Dr. W.R. Bates
> Department of Biology
> Okanagan University College
> 3333 College Way
> Kelowna, BC
> Canada V1V 1V7
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