Navigation Links
New amphibian species result from exploration, not from rule changes

Researchers have discovered amphibian species at an accelerating rate in recent decades, with over 1,000 new ones recognized between 1992 and 2003. At the same time, amphibians are, for reasons not entirely clear, declining more rapidly than either mammals or birds, underscoring the importance of an accurate evaluation.

An analysis published in the August 2005 issue of BioScience, the monthly journal of the American Institute of Biological Sciences, indicates that, contrary to some published expert opinions, new amphibian discoveries are a consequence of increasing exploratory effort, not of changing criteria for recognizing a species, or "taxonomic inflation." The authors of the new analysis, Jörn Köhler of the Hessisches Landesmuseum Darmstadt, Germany, and colleagues, conclude that "Taxonomic exploration is still desperately needed to avoid misinterpretations in global conservation policy."

Köhler and his coauthors reached their conclusions after examining genetic data on a Madagascan frog family, the Mantellidae, that grew from 143 to 203 species between 1992 and 2003. The investigators compared the sequence of a particular mitochondrial gene in mantellid species recognized at various times from the 19th century to the present. The gene sequences were no more similar in recently recognized species than in long-recognized species, a result that argues again taxonomic inflation as the explanation for the growth. Moreover, the Mantellidae include few subspecies that could complicate an analysis. Köhler and colleagues credit the boost in the number of amphibian species descriptions to new bioacoustic and genetic tools, and urge the continuation and expansion of efforts to identify further examples. They acknowledge, however, that taxonomic inflation might explain the growing number of species in some other animal groups, such as primates and birds.

The complete list of research articles in the August issue of BioScience follows:

* N. Yarlett and J. H. P. Hackstein. Hydrogenosomes: One Organelle, Multiple Origins.
* B-R. Lu and A. Snow. Gene From from Genetically Modified Rice and Its Environmental Consequences.
* K. Nobuta and B. C. Meyers. Pseudomonas versus Arabidopsis: Models for Genomic Research into Plant Disease Resistance.
* I. Valiela and P. Martinetto. The Relative Ineffectiveness of Bibliographic Search Engines.
* J. Köhler et al. New Amphibians and Global Conservation: A Boost in Species Discoveries in a Highly Endangered Vertebrate Group.


'"/>

Source:American Institute of Biological Sciences


Related biology news :

1. Researchers find new giant amphibian fossils in Africa
2. Roundup®highly lethal to amphibians, finds University of Pittsburgh researcher
3. Climate change drives widespread amphibian extinctions
4. African amphibians make extreme parental sacrifice: The skin off their backs
5. Major initiative proposed to address amphibian crisis
6. Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs
7. Ancient amphibians evolved a bite before migrating to dry land
8. New species from old data
9. Same mutation aided evolution in many fish species, Stanford study finds
10. Fibril Shape Is The Basis Of Prion Strains And Cross-species Prion Infection
11. Reservoirs may accelerate the spread of invasive aquatic species, researchers say
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/6/2017)... RAM Group , Singaporean based ... in biometric authentication based on a novel  ... to perform biometric authentication. These new sensors are based on ... Ram Group and its partners. This sensor will have ... and security. Ram Group is a next generation ...
(Date:4/18/2017)... , April 18, 2017  Socionext Inc., a global expert in ... media edge server, the M820, which features the company,s hybrid codec ... provided by Tera Probe, Inc., will be showcased during the upcoming ... NAB show at the Las Vegas Convention ... Click ...
(Date:4/13/2017)... 13, 2017 According to a new market research ... Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and ... is expected to grow from USD 14.30 Billion in 2017 to USD ... 17.3%. ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... The Blavatnik Family ... and six Finalists of the 2017 Blavatnik Regional Awards for Young Scientists. ... and administered by the New York Academy of Sciences to honor the excellence ...
(Date:10/12/2017)... , ... October 12, 2017 ... ... has launched Rosalind™, the first-ever genomics analysis platform specifically designed for life ... Named in honor of pioneering researcher Rosalind Franklin, who made a major ...
(Date:10/11/2017)... BALTIMORE, Md. (PRWEB) , ... October 11, 2017 ... ... for digital pathology, announced today it will be hosting a Webinar titled, “Pathology ... of  Advanced Pathology Associates , on digital pathology adoption best practices and how ...
(Date:10/11/2017)... ... October 11, 2017 , ... Singh Biotechnology ... drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and Activator of Transcription ... is able to cross the cell membrane and bind intracellular STAT3 and inhibit ...
Breaking Biology Technology: