Mitochondrial genes: signals and noise in the phylogenetic reconstruction of the annual killifish genus Cynolebias (Cyprinodontiformes, Rivulidae)

2002 ◽  
Vol 76 (1) ◽  
pp. 49-59 ◽  
Author(s):  
G. GARCIA ◽  
F. ALVAREZ-VALIN ◽  
N. GOMEZ
Keyword(s):  
Phylogenetic Reconstruction ◽  
Mitochondrial Genes ◽  
Annual Killifish

RNA editing and phylogenetic reconstruction in two monocot mitochondrial genes

Taxon ◽  
2006 ◽  
Vol 55 (4) ◽  
pp. 871-886 ◽  
Author(s):  
Gitte Petersen ◽  
Ole Seberg ◽  
Jerrold I. Davis ◽  
Dennis W. Stevenson
Keyword(s):  
Rna Editing ◽  
Phylogenetic Reconstruction ◽  
Mitochondrial Genes

Genetic characteristics of Chinese isolates of the tapeworm Taenia pisiformis based on two mitochondrial genes

2014 ◽  
Vol 89 (4) ◽  
pp. 502-505
Author(s):  
D.Y. Yang ◽  
Y.J. Ren ◽  
Y. Fu ◽  
Y. Xie ◽  
X. Nong ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Molecular Analysis ◽  
Nadh Dehydrogenase ◽  
Genetic Research ◽  
Phylogenetic Reconstruction ◽  
Mitochondrial Genes ◽  
Mitochondrial Cytochrome ◽  
Genetic Characteristics ◽  
Single Region ◽  
And Control

AbstractCysticercosis is caused by infections with embryonated eggs of the tapeworm Taenia pisiformis. Knowledge of the genetic characteristics of T. pisiformis could be applied to study the epidemiology and transmission of this parasite. In this study, 61 isolates of intraperitoneal cysticerci from eight geographically distinct regions in Sichuan province, China, were subjected to a molecular analysis in order to determine their intra-regional genetic characteristics. Partial sequences of the mitochondrial cytochrome c oxidase subunit I (cox1, 1427 bp) and NADH dehydrogenase 1 (nad1, 738 bp) were concatenated. Five haplotypes were identified, and 89.04% of total genetic variation was found in collections of T. pisiformis isolates from a single region. According to the phylogenetic reconstruction, the T. pisiformis isolates from eight regions did not form geographical clusters. Our study highlights the genetic characteristics of T.pisiformis with the aim of accelerating the genetic research and control of cysticercosis.

A new species of Contomastix (Squamata, Teiidae) supported by total evidence, with remarks on diagnostic characters defining the genus

2019 ◽  
pp. 23-36
Author(s):  
Mario. R. Cabrera
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Phylogenetic Reconstruction ◽  
Total Evidence ◽  
Molecular Evidence ◽  
Proximal Margin ◽  
Diagnostic Characters ◽  
Morphological Differences ◽  
A New Species ◽  
Molecular Characters

Formerly Cnemidophorus was thought to be the most speciose genus of Teiidae. This genus comprised four morphological groups that were later defined as four different genera, Ameivula, Aurivela, Cnemidophorus and Contomastix. The last appears as paraphyletic in a recent phylogenetic reconstruction based on morphology, but monophyletic in a reconstruction using molecular characters. Six species are allocated to Contomastix. One of them, C. lacertoides, having an extensive and disjunct geographic distribution in Argentina, Uruguay and Brazil. Preliminary analyses revealed morphological differences among its populations, suggesting that it is actually a complex of species. Here, we describe a new species corresponding to the Argentinian populations hitherto regarded as C. lacertoides, by integrating morphological and molecular evidence. Furthermore, we demonstrate that the presence of notched proximal margin of the tongue is a character that defines the genus Contomastix.

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