Navigation Links
Picky female frogs drive evolution of new species in less than 8,000 years

Picky female frogs in a tiny rainforest outpost of Australia have driven the evolution of a new species in 8,000 years or less, according to scientists from the University of Queensland, the University of California, Berkeley, and the Queensland Parks and Wildlife Service.

"That's lightning-fast," said co-author Craig Moritz, professor of integrative biology at UC Berkeley and director of the Museum of Vertebrate Zoology. "To find a recently evolved species like this is exceptional, at least in my experience."

The yet-to-be-named species arose after two isolated populations of the green-eyed tree frog reestablished contact less than 8,000 years ago and found that their hybrid offspring were less viable. To avoid hybridizing with the wrong frogs and ensure healthy offspring, one group of females preferentially chose mates from their own lineage. Over several thousand years, this behavior created a reproductively isolated population - essentially a new species - that is unable to mate with either of the original frog populations.

This example suggests that rapid speciation is often driven by recontact between long-isolated populations, Moritz said. Random drift between isolated populations can produce small variations over millions of years, whereas recontact can amplify the difference over several thousands of years to generate a distinct species.

"The overarching question is: Why are there so many species in the tropics?" Moritz said. "This work has led me to think that the reason is complex topography with lots of valleys and steep slopes, where you have species meeting in lots of little pockets, so that you get all these independent evolutionary experiments going on. Perhaps that helps explain why places like the Andes are so extraordinarily diverse."

Moritz; lead author Conrad Hoskin, a graduate student at the University of Queensland in St. Lucia, Australia; and colleagues Megan Higgie of the University of Queensland and Ke
'"/>

Source:University of California - Berkeley


Page: 1 2 3 4

Related biology news :

1. Mother birds increase progesterone to hatch females
2. Decisions, decisions: Male or female?
3. Looks matter to female barn swallows
4. Male elephants woo females with precise chemistry
5. Older female fish prefer imperfect male mates, study finds
6. New study explores beetle species with two forms of females
7. Male rivalry increases when females at most fertile, say researchers
8. Brain differences could explain why males and females experience pain relief differently
9. UCLA study finds same genes act differently in males and females
10. Choosy females make colourful males
11. New technology addresses female fertility preservation
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Picky female frogs drive evolution new species less than years

(Date:5/23/2013)... WASHINGTON Given the implications for the overall ... should play a primary role in ensuring that ... least 60 minutes per day of vigorous or ... the Institute of Medicine. Recent estimates suggest ... this evidence-based guideline for promoting better health and ...
(Date:5/23/2013)... largest and fastest growing open-access publishers, announces the ... Bioengineering and Biotechnology . , A broad ... Bioengineering and Biotechnology will provide a single ... biotechnology research to be disseminated and discussed. ... will provide an open-science and interactive web platform ...
(Date:5/22/2013)... fuel cell powered buses, including a team from ... degradation processes and bus membrane durability. , The ... stressors in the operating cycle of the bus ... the study, led by SFU graduate student Natalia ... at Burnaby-based Ballard Power Systems and funded by ...
Breaking Biology News(10 mins):Schools should provide opportunities for 60 minutes of daily physical activity to all students 2Schools should provide opportunities for 60 minutes of daily physical activity to all students 3Frontiers launches new open-access journal in Bioengineering and Biotechnology 2Tests lead to doubling of fuel cell life 2
... The West has become 500 percent dustier in the ... accompanying human activity beginning in the 1800s, according to ... at Boulder. Sediment records from dust blown into ... millennia indicates the sharp rise in dust deposits coincided ...
... Feb. 21 Two separate criminal events were,open ... Safe Specialists,(CSS) products recorded on video a robber ... & CEO of CSS, stated, "These are the ... identify perpetrators instead of,closed-circuit television (CCTV). We look ...
... carried out at The University of Nottingham could have a ... back pain are helped to stay in work. Back ... work in the UK. In 2004-5 approximately 34,000 people in ... which they believed were caused or made worse by their ...
Cached Biology News:Dust in West up 500 percent in past 2 centuries, says CU-Boulder study 2Dust in West up 500 percent in past 2 centuries, says CU-Boulder study 3Corporate Safe Specialists Smart Safes Capture Evidence in Robbery and Theft 2Helping back pain sufferers to stay in work 2
(Date:5/23/2013)... 23, 2013  Rahal Letterman Lanigan Racing (RLL) and ... stem cell banking and therapeutics, announced today that StemCyte ... Acorn Stairlifts Indy car driven by James ... the IZOD IndyCar 2013 season.   StemCyte, ... support awareness of umbilical cord blood banking and its ...
(Date:5/23/2013)... Calif. , May 23, 2013 Virobay, ... treatment for pain has reached an important milestone, as ... of VBY-036 - a selective cathepsin S inhibitor.   ... is a double-blind, randomized, placebo-controlled study designed to evaluate ... of VBY-036 in healthy adults. "The initiation ...
(Date:5/23/2013)... DC (PRWEB) May 23, 2013 The ... in STEM industries, Black Data Processing Associates (BDPA), is ... on June 8, 2013. This all-day event will encourage ... and learn the ins and outs from many of ... 3 p.m. at the New Jersey Institute of Technology, ...
(Date:5/23/2013)... May 23, 2013 SynCardia Systems, Inc. ... only FDA, Health Canada and CE (Europe) approved Total ... in Scotland, which boasts more than 380,000 visitors annually, ... powered by the Freedom® portable driver as part ... most advanced exhibitions of its kind. , “BodyWorks ...
Breaking Biology Technology:StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 2StemCyte, Inc. Joins Rahal Letterman Lanigan Racing As Associate Sponsor Of No. 16 IndyCar Program For James Jakes Beginning With The 97th Indianapolis 500 3Virobay, Inc. initiates a Phase 1 Trial of VBY-036, a compound intended for the treatment of neuropathic pain 2Virobay, Inc. initiates a Phase 1 Trial of VBY-036, a compound intended for the treatment of neuropathic pain 3Black Data Processing Associates (BDPA) New Jersey Hosts 10th Annual Families in Technology Day June 8, 2013 2SynCardia Total Artificial Heart Featured in $3 Million Exhibition at Glasgow Science Centre 2SynCardia Total Artificial Heart Featured in $3 Million Exhibition at Glasgow Science Centre 3
... said during a visit to Sheboygan that the region could ... has centered on Madison and Milwaukee. , ,A professor at ... like to work in local biotechnology companies, if the jobs ... leaving to find jobs elsewhere, is a concern across Wisconsin. ...
... Modine Manufacturing reported a drop in net ... December 26, down from $21 million in the ... sales increased around 10 percent to $411 million, ... for automotive and other industries, including fuel cells. ...
... Alliance, a group of investors, scientists and politicians in ... it is creating a roadmap for a biotechnology campus ... 2004, the alliance received $500,000 from the state, which ... quite the $2.5 million in state funding that was ...
Cached Biology Technology:
...
... Experion software, PC, is used ... the data obtained from the Experion ... data in electropherogram and simulated gel ... other calculations in a Results table. ...
... Top cover cold rolled steel with ... Work surface polyethylene ... glass 3 UV lamps ... lamp interlocked with fluorescent light ...
...
Biology Products: