Navigation Links
UT researcher sheds new light on hybrid animals
Date:9/17/2007

KNOXVILLE -- What began more than 50 years ago as a way to improve fishing bait in California has led a University of Tennessee researcher to a significant finding about how animal species interact and that raises important questions about conservation.

In the middle of the 20th century, local fishermen who relied on baby salamanders as bait introduced a new species of salamander to California water bodies. These Barred Tiger salamanders came into contact with the native California Tiger salamanders, and over time the two species began to mate.

"To give you a sense of the difference between these two species, they are about as closely related as humans and chimpanzees," said UT assistant professor Ben Fitzpatrick, a faculty member in the Department of Ecology and Evolutionary Biology.

Mating between two different species creates a hybrid offspring. According to Fitzpatrick, while such hybrids have been found to be successful in plant species, research has generally shown that animal hybrids are not able to sustain themselves -- in scientific terms, they lack "fitness."

This understanding made Fitzpatrick's findings especially surprising when he looked at the offspring of the two salamander species in California. He and colleague Bradley Shaffer of the University of California, Davis, found that the new hybrid salamanders were not only surviving, but in some cases, thriving.

"I thought I was studying hybrid dysfunction going into this study -- looking at how hybrids go wrong," said Fitzpatrick. "The level of vigor in these hybrids was completely unexpected."

Their research, funded by the National Science Foundation and the Environmental Protection Agency, will appear in the upcoming issue of the Proceedings of the National Academy of Sciences. It is among the first to show hybrid vigor among animal species, and Fitzpatrick noted that the work raises a number of questions for conservationists.

The C
'/>"/>

Contact: Jay Mayfield
jay.mayfield@tennessee.edu
865-974-9409
University of Tennessee at Knoxville
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Researchers discover way to make cells in the eye sensitive to light
2. Researchers find how protein allows insects to detect and respond to pheromones
3. Researchers Uncover Key Step In Manufacture of Memory Protein
4. U of M researcher examines newly emerging deadly disease
5. NYU researchers simulate molecular biological clock
6. Researchers reveal the infectious impact of salmon farms on wild salmon
7. Researchers identify target for cancer drugs
8. Vital step in cellular migration described by UCSD medical researchers
9. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
10. UCSD researchers maintain stem cells without contaminated animal feeder layers
11. Researchers discover molecule that causes secondary stroke
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/29/2014)... research potential of the Barcode of Life Data ... Biodiversity Data Journal (BDJ) used ... imported these into a human-readable text developed in manuscript ... were used to study the species distributions of ten ... , BOLD is originally designed to support the generation ...
(Date:10/29/2014)... 29, 2014 – Ghrelin is a hormone released by ... Alcohol is commonly viewed as a psychoactive substance that ... highly caloric food. , This knowledge, combined with ... that ghrelin has the potential to stimulate alcohol craving. ... in humans and found that, as they had anticipated, ...
(Date:10/28/2014)... One of the tragic realities of cancer is ... highly toxic and their effectiveness varies unpredictably from ... is poised to change this reality by rapidly ... on an individual,s cancer before chemotherapy begins. , ... headed by Assistant Professor Melissa Skala has developed ...
Breaking Biology News(10 mins):Go straight and publish: From Barcode of Life Data Systems to scholarly publishing systems 2Ghrelin stimulates an appetite for drinking alcohol 2Improving breast cancer chemo by testing patient's tumors in a dish 2Improving breast cancer chemo by testing patient's tumors in a dish 3
... Zealand The first paternity study of southern right whales ... for males, scientists say, which is good news for the ... for local populations through in-breeding. Results of the study, ... and the New Zealand Department of Conservation, have just been ...
... from Ludwig-Maximilians-Universitt (LMU) in Munich have identified an enzyme ... essential for bacterial pathogenicity. Because it shows no similarity ... target for development of novel antimicrobial drugs. ... that these strains become pathogenic only when an enzyme ...
... at the University of Copenhagen have previously documented that ... Cyrtanthus akin to snowdrops and daffodils have ... are involved in depression. This research has now yielded ... of Health and Medical Sciences has recently shown how ...
Cached Biology News:First paternity study of southern right whales finds local fathers most successful 2First paternity study of southern right whales finds local fathers most successful 3South African daffodils may be a future cure for depression 2
(Date:10/30/2014)... INDIANAPOLIS , Oct. 30, 2014 A ... Battelle Technology Partnership Practice, takes an in-depth look at ... innovation outputs that have resulted over two different time ... also provides a view of future opportunities for investment ... Indiana report shows gains in innovation ...
(Date:10/27/2014)... (PRWEB) October 27, 2014 The ... by Type (High & Medium), Sub-type (Primary & ... Processing, Infrastructure & Transportation & Power Generation) - ... the GIS market with analysis and forecasting of ... Market Data Tables with 52 Figures spread through ...
(Date:10/27/2014)... BOSTON, MA (PRWEB) October 27, 2014 ... and profit. SoundConnect , an industry leading ... for its partners and agents to deliver cloud-based ... and accelerate growth opportunities. , With SoundConnect’s ... for every twenty-five video and/or web conferencing licenses ...
(Date:10/27/2014)... 27, 2014 Investor-Edge has initiated ... NBIX ), Insmed Inc. (NASDAQ: ... ), Dyax Corporation (NASDAQ: DYAX ), and ... companies can be accessed at: http://investor-edge.com/register . ... ended at 4,483.72, up 0.69%, the Dow Jones Industrial ...
Breaking Biology Technology:New report shows Indiana's gains in life sciences innovation capital outpace the nation 2New report shows Indiana's gains in life sciences innovation capital outpace the nation 3New report shows Indiana's gains in life sciences innovation capital outpace the nation 4New report shows Indiana's gains in life sciences innovation capital outpace the nation 5Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 2Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 3Gas Insulated Switchgear Market worth $21,951.9 Million by 2019 - New Report by MarketsandMarkets 4SoundConnect Unveils Q4 Partner Incentives 2Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 2Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 3Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 4Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 5
... ARBOR, Mich.---A delicate balance of atomic forces can be ... size---an attribute that,s important for many nanotech applications but ... The same type of forces are at work ... inorganic supercluster structures in this research are in many ...
... announced today they have been named to the prestigious 30th ... entrepreneurial and fastest growing companies in America. The 2011 Inc. ... past three years.  HumanTouch is ranked 203 on this list. ... representatives of the Inc. 500 such as Zappos, Patagonia, Intuit ...
... 2011 Biotechnology leader Divine Skin Inc. (DSKX) posted ... quarter. The expanding innovator of personal care solutions credits ... sales, which are 79 percent ahead of the same ... has been keeping up with demand," said Divine Skin ...
Cached Biology Technology:Engineers discover nanoscale balancing act that mirrors forces at work in living systems 2Divine Skin Posts Record Q2 Revenue of $2.33 Million, up 79 Percent From 2010 2Divine Skin Posts Record Q2 Revenue of $2.33 Million, up 79 Percent From 2010 3
... a manual heat sealer ideal for low to ... can seal a wide range of plates of ... heating element of the sealer is pre-set for ... seals when used in conjunction with ABgenes sealing ...
... controller is the successor to the original DS-U1. ... of the cameras in the Nikon DS camera ... interface. The DS-U2 transmits information at high speed, ... both hub and mass storage USB 2.0 interfaces. ...
...
This unique buffer provides a gentle method for removal of primary and secondary antibodies to allow several reprobings on the same membrane. Gentle buffer will not alter the antigen for subsequent i...
Biology Products: