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:9/23/2014)... CHAMPAIGN, Ill. Scientists have scoured cow rumens and ... plant cell walls for the production of next-generation biofuels, ... reside in the human lower intestine, researchers report. , ... of the National Academy of Sciences , is the ... that microbes in the human gut can digest fiber, ...
(Date:9/23/2014)... as good for your mental as your physical health, ... University of Warwick,s Medical School using data from the ... Open focused on mental wellbeing and found that ... an individual,s fruit and vegetable consumption. , 33.5% of ... portions of fruit and vegetables a day, compared with ...
(Date:9/23/2014)... humans, have parasitic DNA fragments called "jumping genes" that ... the process. And that phenomenon can result in age-related ... of Rochester now report that the "jumping genes" in ... multi-function protein stops keeping them in check in order ... study published today in Nature Communications , Professor ...
Breaking Biology News(10 mins):Search for better biofuels microbes leads to the human gut 2Search for better biofuels microbes leads to the human gut 3Eating five a day may keep the blues away 2A multi-function protein is key to stopping genomic parasites from 'jumping' 2
... open-access journal PLoS Biology, streamlines the computation required to ... influence a particular physical trait, or phenotype. Thanks to ... Akey, and Leonid Kruglyak, researchers have a more efficient ... elements that produce specific traits. , In brewer's yeast ...
... Combining partially differentiated stem cells with gene therapy can promote ... damaged spinal cords of rats, a new study shows. The ... also improves the animals' motor function and electrical conduction from ... lead to new ways of treating spinal cord injury in ...
... a study conducted at Johns Hopkins show that stem cell ... myocardial infarction, in pigs. In just two months, stem cells ... animal's damaged heart restored heart function and repaired damaged heart ... findings, first presented last fall at the 2004 Scientific Sessions ...
Cached Biology News:Improved statistical tools reveal many linked loci 2Combination therapy leads to partial recovery from spinal cord injury in rats 2Combination therapy leads to partial recovery from spinal cord injury in rats 3Stem cell therapy successfully treats heart attack in animals 2
(Date:9/23/2014)... 23, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the ... Q3 orders to date to $5 million. The orders are ... . "We continue to see new orders coming ... these orders, our backlog has climbed to over $11 million." ... a leading clean technology company that designs, manufactures and distributes ...
(Date:9/23/2014)... September 23, 2014 This is ... Global and China Isopropanol (IPA) industry. The report ... definitions, applications and industry chain structure. Global market ... with a focus on history, developments, trends and ... the international and Chinese situation is also offered. ...
(Date:9/23/2014)... Texas Fertility Center (TFC) announces the opening ... a Central Texas footprint that includes Round Rock, Central ... for the region’s most established practice will provide full ... Buda, Kyle and San Marcos communities. , “We ... to individuals and couples living in and around South ...
(Date:9/23/2014)... Plymouth, MN (PRWEB) September 23, 2014 ... named NimbeLink, a developer of cellular modems ... a finalist in the Startup category for the ... will be held at the Minneapolis Convention Center ... Minnesota companies and individuals who have shown superior ...
Breaking Biology Technology:(IPA) Isopropanol Industry International & China Development Trend Analysis Now Available at DeepResearchReports.com 2(IPA) Isopropanol Industry International & China Development Trend Analysis Now Available at DeepResearchReports.com 3Opening Doors to a Family: Texas Fertility Center Announces Newest Fertility Clinic in South Austin 2Opening Doors to a Family: Texas Fertility Center Announces Newest Fertility Clinic in South Austin 3NimbeLink Named Finalist for 15th Annual Tekne Awards 2NimbeLink Named Finalist for 15th Annual Tekne Awards 3
... ,II. Product Components ,III. Materials to ... Extraction of DNA from Buccal Swab ,V. Protocol ... Quantification of Amplified Products ,VII. Purification of ... , References , Contact Information , , ,,Application ...
... , , ... , , , , ... individuals suffering,from cancer may serve as an,early indication that the primary,tumor ... individual,cancer cells may attach in distant,regions and form colonies as an,initial ...
... , , ... , , , ... Helicobacter,pylori (H. pylori) is the major,cause of chronic active gastritis,and ... studies using a,multiplex PCR (mPCR) based,approach distinguished different,allelic variants that ...
Cached Biology Technology:Protocol for GenomePlex Whole Genome Amplification ,from Buccal Swab 2Protocol for GenomePlex Whole Genome Amplification ,from Buccal Swab 3Protocol for GenomePlex Whole Genome Amplification ,from Buccal Swab 4Protocol for GenomePlex Whole Genome Amplification ,from Buccal Swab 5Protocol for GenomePlex Whole Genome Amplification ,from Buccal Swab 6Sensitive detection of tumor cells in,peripheral blood of carcinoma patients,by a reverse transcription PCR method 2Sensitive detection of tumor cells in,peripheral blood of carcinoma patients,by a reverse transcription PCR method 3Sensitive detection of tumor cells in,peripheral blood of carcinoma patients,by a reverse transcription PCR method 4Sensitive detection of tumor cells in,peripheral blood of carcinoma patients,by a reverse transcription PCR method 5Microfluidic analysis of multiplex,PCR products for the genotyping of,Helicobacter pylori 2Microfluidic analysis of multiplex,PCR products for the genotyping of,Helicobacter pylori 3Microfluidic analysis of multiplex,PCR products for the genotyping of,Helicobacter pylori 4Microfluidic analysis of multiplex,PCR products for the genotyping of,Helicobacter pylori 5Microfluidic analysis of multiplex,PCR products for the genotyping of,Helicobacter pylori 6
CBF-B (G-2)...
... B Receptor Like Protein 2 ... (ETBR-LP-2) has been reported in human ... human brain and colon libraries. ... the amino acid sequence is considered ...
HSV-2 gD (0191)...
... The epitope recognized by A300-183A ... isoform 5 of human quaking ... (GeneID 9444). The epitope ... 1, 2, 3, 4, 6, ...
Biology Products: