Kadal Florida berkembang pesat , dalam waktu 15 tahun dan 20 generasi--T-REC-komunitas reptil-semarang--KSE-komunitas satwa eksotik

SILAHKAN MENGGUNAKAN " MESIN TRANSLATE "..GOOGLE TRANSLATE
DISAMPING KANAN INI.............

PLEASE USE ........ "TRANSLATE MACHINE" .. GOOGLE TRANSLATE BESIDE RIGHT THIS

.................


T-REC -TUGUMUDA REPTILES COMMUNITY-INDONESIA


More info :
www.trecsemarang2011.blogspot.com
minat gabung : ( menerima keanggotaan seluruh kota dan daerah di Indonesia )
08995557626
..................................
KSE – KOMUNITAS SATWA EKSOTIK – EXOTIC PETS COMMUNITY-- INDONESIA
Visit Our Community and Joint W/ Us....Welcome All Over The World
www.facebook.com/groups/komunitassatwaeksotik/
 KSE = KOMUNITAS SATWA EKSOTIK

MENGATASI KENDALA MINAT DAN JARAK

KAMI ADA DI TIAP KOTA DI INDONESIA
DETAIL TENTANG KSE-----KLIK : www.komunitassatwaeksotik-pendaftaran.blogspot.com

GABUNG......... ( menerima keanggotaan seluruh kota dan daerah di Indonesia )
HUBUNGI   :  089617123865

.........................

Kadal Florida berkembang pesat , dalam waktu 15 tahun dan 20 generasi

Para ilmuwan yang bekerja di pulau-pulau di Florida telah mendokumentasikan evolusi cepat dari spesies kadal asli - dalam waktu 15 tahun - sebagai akibat dari tekanan dari menyerang spesies kadal invading  , yang diperkenalkan dari Kuba ....more

Florida lizards evolve rapidly, within
15 years and 20 generations

Date:

October 23, 2014

Source:

University of Texas at Austin

Summary:

Scientists working on islands in Florida have documented the rapid
evolution of a native lizard species -- in as little as 15 years -- as a result
of pressure from an invading lizard species, introduced from Cuba.

..................

Scientists working on islands in Florida have documented the rapid
evolution of a native lizard species -- in as little as 15 years -- as a result
of pressure from an invading lizard species, introduced from Cuba.

After contact with the invasive species, the native lizards began perching
higher in trees, and, generation after generation, their feet evolved to become
better at gripping the thinner, smoother branches found higher up.

The change occurred at an astonishing pace: Within a few months, native
lizards had begun shifting to higher perches, and over the course of 15 years
and 20 generations, their toe pads had become larger, with more sticky scales
on their feet.

"We did predict that we'd see a change, but the degree and quickness
with which they evolved was surprising," said Yoel Stuart, a postdoctoral
researcher in the Department of Integrative Biology at The University of Texas at
Austin and lead author of the study appearing in the Oct. 24 edition of the
journal Science.

"To put this shift in perspective, if human height were evolving as
fast as these lizards' toes, the height of an average American man would
increase from about 5 foot 9 inches today to about 6 foot 4 inches within 20
generations -- an increase that would make the average U.S. male the height of
an NBA shooting guard," said Stuart. "Although humans live longer
than lizards, this rate of change would still be rapid in evolutionary
terms."

The native lizards studied, known as Carolina anoles or green anoles, are
common in the southeastern U.S. The invasive species, Cuban anoles or brown
anoles, are native to Cuba and the Bahamas. Brown anoles first appeared in
South Florida in the 1950s, possibly as stowaways in agricultural shipments
from Cuba, and have since spread across the southeastern U.S. and have even
jumped to Hawaii.

This latest study is one of only a few well-documented examples of what
evolutionary biologists call "character displacement," in which
similar species competing with each other evolve differences to take advantage
of different ecological niches. A classic example comes from the finches
studied by Charles Darwin. Two species of finch in the Galápagos Islands
diverged in beak shape as they adapted to different food sources.

The researchers speculate that the competition between brown and green
anoles for the same food and space may be driving the adaptations of the green
anoles. Stuart also noted that the adults of both species are known to eat the
hatchlings of the other species.

"So it may be that if you're a hatchling, you need to move up into the
trees quickly or you'll get eaten," said Stuart. "Maybe if you have
bigger toe pads, you'll do that better than if you don't."

Stuart's co-authors are Todd Campbell at the University of Tampa; Paul
Hohenlohe of the University of Idaho; Robert Reynolds of the University of
Massachusetts, Boston; Liam Revell at the University of Massachusetts, Boston;
and Jonathan Losos at Harvard University.










Story Source:

The above story is based on materials provided
by University of Texas at Austin. Note:
Materials may be edited for content and length.










Journal Reference:

1.   
Y. E. Stuart, T. S. Campbell, P. A. Hohenlohe, R. G. Reynolds, L. J.
Revell, and J. B. Losos. Rapid evolution of a native species following
invasion by a congener.Science, October 2014 DOI: 10.1126/science.1257008

http://www.sciencedaily.com/releases/2014/10/141023142306.htm

Share this: