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:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ) - ... ( http://www.apimages.com ) - Germany . The ... refugee identity cards. DERMALOG will be unveiling this device, and a ... next week.   --> Germany . ... new refugee identity cards. DERMALOG will be unveiling this device, and ...
(Date:3/10/2016)... --> --> ... and Access Management Market by Component (Provisioning, Directory Services, ... Organization Size, by Deployment, by Vertical, and by Region ... market is estimated to grow from USD 7.20 Billion ... a Compound Annual Growth Rate (CAGR) of 12.2% during ...
(Date:3/9/2016)... -- This BCC Research report provides an overview of ... (RNA Seq) market for the years 2015, 2016 and ... data analysis, and services. Use this report ... such as RNA-Sequencing tools and reagents, RNA-Sequencing data analysis, ... segment and forecast their market growth, future trends and ...
Breaking Biology News(10 mins):
(Date:5/20/2016)... ... May 20, 2016 , ... The recent recall by Costco ... by Food Safety News on May 12, 2016(1), demonstrates the need for faster and ... of Baltimore-based biotech firm, PathSensors, Inc. , PathSensor’s latest solution uses ...
(Date:5/19/2016)... Columbia , May 19, 2016  AdvancedFlow ... Innovations Inc. (AGI), based out of ... Greenlane Biogas Ltd. to its existing portfolio of ... manufacturing agreement. AFS along with its sister companies ... is a vertically integrated industrial group that specializes ...
(Date:5/19/2016)... , ... May 19, 2016 , ... ... organization (CRO) has welcomed Abu Siddiqui as Director, Large Molecule & Biomarker Bioanalysis. ... biologics, vaccine and translational biomarker discovery studies for preclinical and clinical safety programs. ...
(Date:5/19/2016)... -- - I dati saranno presentati nel ... ° Congresso della Società Americana ... - Le conclusioni dello studio indicano un tasso di risposta ... il 90% presenta una d urata della risposta (Duration ... per cento dei pazienti ha riscontrato un beneficio clinico. ...
Breaking Biology Technology: