New Scientifical Lies: Evolution Only Takes 10 Years!

[WilliamJenningsBryan]

Re: New Scientifical Lies: Evolution Only Takes 10 Years!

"High-predation females invest more resources into current reproduction because a high rate of mortality, driven by predators, means these females may not get another chance to reproduce," explained Gordon, who works in the lab of David Reznick, a professor of biology. "Low-predation females, on the other hand, produce larger embryos because the larger babies are more competitive in the resource-limited environments typical of low-predation sites. Moreover, low-predation females produce fewer embryos not only because they have larger embryos but also because they invest fewer resources in current reproduction."

Typical scientist crap. This has nothing to do with "evolution" at all; the guppy females saw that too many of their young were being eaten and decided to have more offspring. Our women do the same thing. Ever hear of the "Baby Boom" after World War II? Every one just got together and decided to have more children and soldiers for Christ to fight off the communist menace and replace those killed in the war.

[Negative_Cool]

Re: New Scientifical Lies: Evolution Only Takes 10 Years!

They are still guppies! I don't see any proof of evolution there.

Essentially this reads as: If you put guppies in a pond they will still be guppies in 10 years time.

Moreover, the SCIENTISTS PUT THE GUPPIES THERE! It just proves that in order for there to be life somewhere, someone had to put it there! Just like how God put US here.

What a bunch of crackpots.

Thanks for showing us this latest nonsense from the "scientific" community Pastor Ezekiel.

Your brother in Christ,
NC.

[Pastor Ezekiel]

THIS is just unbelieveable. You can't help but scratch your head and wonder at the non-stop stream of bull-puckey (pardon my French) that these secular, monkey-worshiping scientists pull of of their behinds. Last week, evolution took bazillions of years (when we know from the Holy Bible that the earth is only around 6,000 years old!). But today they announce that it only takes 10 years!

Evolution Can Occur In Less Than 10 Years, Guppy Study Finds

How fast can evolution take place? In just a few years, according to a new study on guppies led by UC Riverside's Swanne Gordon, a graduate student in biology.

Gordon and her colleagues studied guppies — small fresh-water fish biologists have studied for long — from the Yarra River, Trinidad. They introduced the guppies into the nearby Damier River, in a section above a barrier waterfall that excluded all predators. The guppies and their descendents also colonized the lower portion of the stream, below the barrier waterfall, that contained natural predators.

Eight years later (less than 30 guppy generations), the researchers found that the guppies in the low-predation environment above the barrier waterfall had adapted to their new environment by producing larger and fewer offspring with each reproductive cycle. No such adaptation was seen in the guppies that colonized the high-predation environment below the barrier waterfall.

"High-predation females invest more resources into current reproduction because a high rate of mortality, driven by predators, means these females may not get another chance to reproduce," explained Gordon, who works in the lab of David Reznick, a professor of biology. "Low-predation females, on the other hand, produce larger embryos because the larger babies are more competitive in the resource-limited environments typical of low-predation sites. Moreover, low-predation females produce fewer embryos not only because they have larger embryos but also because they invest fewer resources in current reproduction."

Natural guppy populations can be divided into two basic types. High-predation populations are usually found in the downstream reaches of rivers, where they coexist with predatory fishes that have strong effects on guppy demographics. Low-predation populations are typically found in upstream tributaries above barrier waterfalls, where strong predatory fishes are absent. Researchers have found that this broad contrast in predation regime has driven the evolution of many adaptive differences between the two guppy types in color, morphology, behavior, and life history.

Gordon's research team performed a second experiment to measure how well adapted to survival the new population of guppies were. To this end, they introduced two new sets of guppies, one from a portion of the Yarra River that contained predators and one from a predator-free tributary to the Yarra River into the high-and low-predation environments in the Damier River.

They found that the resident, locally adapted guppies were significantly more likely to survive a four-week time period than the guppies from the two sites on the Yarra River. This was especially true for juveniles. The adapted population of juveniles showed a 54-59 percent increase in survival rate compared to their counterparts from the newly introduced group.

"This shows that adaptive change can improve survival rates after fewer than ten years in a new environment," Gordon said. "It shows, too, that evolution might sometimes influence population dynamics in the face of environmental change."

She was joined in the study by Reznick and Michael Bryant of UCR; Michael Kinnison and Dylan Weese of the University of Maine, Orono; Katja Räsänen of the Swiss Federal Institute of Technology, Zurich, and the Swiss Federal Institute of Aquatic Science and Technology, Dübendorf; and Nathan Miller and Andrew Hendry of McGill University, Canada.

Study results appear in the July issue of The American Naturalist.

Financial support for the study was provided by the National Science Foundation, the Natural Sciences and Engineering Research Council of Canada, the Le Fonds Québécois de la Recherche sur la Nature et les Technologies, the Swedish Research Council, the Maine Agricultural and Forestry Experiment Station, and McGill University.