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Posted by Fishman on July 13, 2006, 3:36 pm
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> On Thu, 13 Jul 2006 17:03:51 GMT, "Fishman ><(((°>"
>
>>
>>> As per the title. Is this true?
>>>
>>
>>Lake Victoria is one of the largest lakes, if not the largest lake on
>>planet
>>Earth.
>>Please tell me how anyone can know for sure how many species of
>>haplochromine cichlid there are left in the Lake......
>>
>>Current gueestimate maybe.
>>
>
> They don't know for sure but using the same methods found and named
> over 200 Haplochromis species before Lates was introduced to Lake
> Victoria. Lates has been driving many of the endemic species to
> extinction. The pressure on the Haplochromis population has become a
> major problem.
>
> There is no guesswork involved but many, many years of survey.
>
> --
> Steve Wolstenholme Neural Planner Software
>
> EasyNN-plus. The easy way to build neural networks.
> http://www.easynn.com
If interested in the Lake, the lifestyle & ecology of surrrounding area,
then the film Darwin's Nightmare is worth a look.
http://www.imdb.com/title/tt0424024/
Certainly is a shame though that the Nile Perch got introduced in the 1st
place.
The impact is far wider than the loss of cichlids though, indirectly it has
caused deforestation & soil erosion.
Small cichlids caught by fishermen were sun dried, but the Nile Perch is
dried / cooked over fires hence the large scale deforestation.
No trees and bushes - soil erosion, a total mess.
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