"WASHINGTON (AP) -- Scientists call the growing oxygen-starved patches of world waterways "dead zones." That also could describe the not-so-swinging mating scene for some of the fish that live there.
For zebrafish, low oxygen levels in the water turn their habitat into the equivalent of a freshwater locker room. When oxygen is reduced, newly born male zebrafish outnumber females 3-to-1, and the precious few females have testosterone levels about twice as high as normal, according to a scientific study released Wednesday."
For the rest of the article see http://www.cnn.com/2...html?eref=yahoo
lack of oxygen = more males
Started by Leslie, Mar 29 2006 10:15 AM
2 replies to this topic
#1
Leslie
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Worm Girl
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Posted 29 March 2006 - 10:15 AM
#2
herbko
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Herbzilla
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Posted 29 March 2006 - 11:04 AM
You mean those Oxygen bars that were popular years ago may actually be a good thing?
Herb Ko http://herbko.net
Canon 5D; Aquatica housing; 2 Inon Z220 strobes; Canon 100mm macro, 17-40mm ; Sigma 15mm FE, 24mm macro, 50mm macro
Canon 5D; Aquatica housing; 2 Inon Z220 strobes; Canon 100mm macro, 17-40mm ; Sigma 15mm FE, 24mm macro, 50mm macro
#3
ce4jesus
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Giant Squid
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Posted 03 April 2006 - 02:14 PM
So will that make all those nitrox divers a bunch of girly men?
Gary
Olympus E-520, TLC arms, Inon Z-240s, 50mm, 14-42mm woody's diopter
Olympus E-520, TLC arms, Inon Z-240s, 50mm, 14-42mm woody's diopter
