View Full Version : Ahhh!!
Morel
07-01-2003, 10:53 PM
http://news.bbc.co.uk/2/hi/science/nature/3026104.stm
It's always fun to play god!
hehe
Yes, it's a fish link, don't worry =p
Matak
07-01-2003, 10:58 PM
BDDD (http://www.aquariacentral.com/forums/showthread.php?s=&threadid=12609) (Bin Dehr, Dun Dat)
125gJoe
07-02-2003, 8:08 AM
Matak, thanks for the link. I may have been on the St. John's River (vacation) when the 6/20 posts were made and I missed it. Wow, and such 'trolling'! :eek: Unreal......
I don't like the idea of "glowing science project" fish! Now, selective breeding to say -- bring out the colors of certain species if fine with me.
tricksterpup
07-02-2003, 12:19 PM
Nah, here is something just as scary, a Gambusia affinis with the ability to survive -30 temps. This could be a major problem if it got into the wilds, which it probably has.
More than 30 years of natural selection by Fattig Fish has resulted in a genetically adapted cold-tolerant stock of Gambusia affinis able to survive temperatures below -30° and to 100° Fahrenheit. This special cold-tolerant strain is particularly well-suited to climates above the 39th parallel, where winter temperatures often prevent overwintering of Southern Gambusia.
This is from website: http://www.fattigfish.com/mosfish.htm
Now I am not here to condem this company. They probably did not inject any dna or anything like that into this fish but just did natural selection and pulled out fish that are more cold tolerant and created a strain that way. This species, if they are correct have the ability to survive Minnesota, Dakota, and Wyoming, winters. Now if this fish was able to get into these states and many more and reproduce, could cause problems for many of the local fish such as top minnows.
I would really like to hear Orion Girls Opinon on this.
jim
wetmanNY
07-02-2003, 1:17 PM
Skeptical Ol' Aquarist recalls similar "inherited conditioning" experiments enthusiastically endorsed by dear old Stalin (google "Lamarckian inheritance" etc)-- that set back Soviet biology a full generation. (Lucky us, no doubt!)
Compare the "conversion" of marine fish to freshwater and vice versa.
Some fishes are naturally "euryhaline." (That word'll set you back $1.50 .) And some fishes, such as Gambusia affinis and G. holbrooki have unusually wide tolerance for temperature range. Compare Desert Pupfish of various kinds, which are also Cyprinodonts.
...and coldwater piranhas in Britain's watercourses...
Species where they don't belong. Who could forget the infamous Cane Toad in Australia. How many can you hit between Perth and Brisbane?
tricksterpup
07-02-2003, 5:29 PM
Don't forget Rabbits, Foxes, mice and rats in Austrialia.. Also they have a problem with the Gambuisa there too. It was introduced to remove the Cane toad problem.. ;) j/k
it was again, introduced to remove the mosquitos.
jim