World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Plos One : New Metrics for Comparison of Taxonomies Reveal Striking Discrepancies Among Species Delimitation Methods in Madascincus Lizards, Volume 8

By Fontaneto, Diego

Click here to view

Book Id: WPLBN0003963845
Format Type: PDF eBook :
File Size:
Reproduction Date: 2015

Title: Plos One : New Metrics for Comparison of Taxonomies Reveal Striking Discrepancies Among Species Delimitation Methods in Madascincus Lizards, Volume 8  
Author: Fontaneto, Diego
Volume: Volume 8
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary)
Historic
Publication Date:
Publisher: Plos

Citation

APA MLA Chicago

Fontaneto, D. (n.d.). Plos One : New Metrics for Comparison of Taxonomies Reveal Striking Discrepancies Among Species Delimitation Methods in Madascincus Lizards, Volume 8. Retrieved from http://netlibrary.net/


Description
Description : Delimiting and describing species is fundamental to numerous biological disciplines such as evolution, macroecology, and conservation. Delimiting species as independent evolutionary lineages may and often does yield different outcomes depending on the species criteria applied, but methods should be chosen that minimize the inference of objectively erroneous species limits. Several protocols exploit single-gene or multi-gene coalescence statistics, assignment tests or other rationales related to nuclear DNA (nDNA) allele sharing to automatically delimit species. We apply seven different species delimitation protocols to a taxonomically confusing group of Malagasy lizards (Madascincus), and compare the resulting taxonomies with two newly developed metrics : the Taxonomic index of congruence Ctax which quantifies the congruence between two taxonomies, and the Relative taxonomic resolving power index Rtax which quantifies the potential of an approach to capture a high number of species boundaries. The protocols differed in the total number of species proposed, between 9 and 34, and were also highly incongruent in placing species boundaries. The Generalized Mixed Yule- Coalescent approach captured the highest number of potential species boundaries but many of these were clearly contradicted by extensive nDNA admixture between sympatric mitochondrial DNA (mtDNA) haplotype lineages. Delimiting species as phenotypically diagnosable mtDNA clades failed to detect two cryptic species that are unambiguous due to a lack of nDNA gene flow despite sympatry. We also consider the high number of species boundaries and their placement by multi-gene Bayesian species delimitation as poorly reliable whereas the Bayesian assignment test approach provided a species delimitation highly congruent with integrative taxonomic practice. The present study illustrates the trade-off in taxonomy between reliability (favored by conservative approaches) and resolving power (favored by inflationist approaches). Quantifying excessive splitting is more difficult than quantifying excessive lumping, suggesting a priority for conservative taxonomies in which errors are more liable to be detected and corrected by subsequent studies.

 

Click To View

Additional Books


  • Plos One : Optogenetically Induced Seizu... (by )
  • Plos One : Quantitative Assessment of th... (by )
  • Plos One : the Relationship Between Adip... (by )
  • Plos One : a Branched Biosynthetic Pathw... (by )
  • Plos One : Infection with a Virulent Str... (by )
  • Plos One : Probucol Increases Striatal G... (by )
  • Plos One : Modulation of Apoptotic Pathw... (by )
  • Plos One : Differential Network Analysis... (by )
  • Plos One : Repeated Lake-stream Divergen... (by )
  • Plos One : Future Climate Change will Fa... (by )
  • Plos One : Functionally Suppressive Cd8 ... (by )
  • Plos One : Cyclosporine a Enhances Th2 B... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.