scholarly journals Computational phylogenetics and the classification of South American languages

2019 ◽  
Vol 13 (12) ◽  
Author(s):  
Lev Michael ◽  
Natalia Chousou‐Polydouri
Keyword(s):  
South American ◽  
Computational Phylogenetics

Taxonomic status of Andersen’s fruit-eating bat (Artibeus jamaicensis aequatorialis) and revised classification of Artibeus (Chiroptera: Phyllostomidae)

Zootaxa ◽  
2010 ◽  
Vol 2648 (1) ◽  
pp. 45 ◽  
Author(s):  
PETER A. LARSEN ◽  
MARÍA R. MARCHÁN-RIVADENEIRA ◽  
ROBERT J. BAKER
Keyword(s):  
Taxonomic Status ◽  
Morphological Characters ◽  
Species Level ◽  
South American ◽  
Reciprocal Monophyly ◽  
Dna Variation ◽  
The Andes ◽  
Artibeus Jamaicensis ◽  
Phylogenetic Studies

Fruit-eating bats of the genus Artibeus are widely distributed across the Neotropics and are one of the most recently evolved assemblages of the family Phyllostomidae. Although the taxonomy and systematics of species of Artibeus has been the subject of an intense historical debate, the most current taxonomic arrangements recognize approximately eleven species within the genus. However, recent phylogenetic studies indicate that species diversity within South and Middle American populations of Artibeus is underestimated. South American populations referable to A. jamaicensis aequatorialis are of considerable interest because previous studies of mitochondrial DNA variation identified potential species level variation west of the Andes Mountains. In this study we use morphometric and genetic data (nuclear AFLPs) to investigate the taxonomic status of A. j. aequatorialis. Our results indicate that elevating aequatorialis to species level is appropriate based on statistically supported reciprocal monophyly in mitochondrial and nuclear datasets and diagnostic morphological characters. In light of our results, and of those presented elsewhere, we provide a revised classification of the genus.

SELECTION FOR A NON-GENITALIC MATING STRUCTURE IN FEMALE TIGER BEETLES OF THE GENUS CICINDELA (COLEOPTERA: CICINDELIDAE)

1974 ◽  
Vol 106 (6) ◽  
pp. 561-568 ◽  
Author(s):  
Richard Freitag
Keyword(s):  
Male Genitalia ◽  
Species Group ◽  
South American ◽  
Tiger Beetles ◽  
Mating Structure ◽  
Female Mating ◽  
Selection For ◽  
North And South

AbstractFemales of species in Cicindela have a groove or pit in the mesepisternum which is concluded to be a mating structure, "coupling sulcus," that is held by the mandibles of the male. Six character states of the coupling sulcus are described, and may be useful for identification at the species and species group levels. Primitive (groove) and advanced (cavity) states of the coupling sulcus are derived by comparison with a classification of North and South American Cicindela based on the male genitalia. I suggest the following hypothesis: the female mating structure evolved in response to the highly agile behaviour of diurnal tiger beetles; the advanced cavity-like coupling sulcus is a result of population adjustments to long periods of hot conditions; and the non-agile, crepuscular, and nocturnal habits of primitive tiger beetles such as Amblycheila, Omus, and Megacephala have resulted in no selection for a female mesepisternum coupling sulcus.

scholarly journals A Study of Intraseasonal Temperature Variability in Southeastern South America

2012 ◽  
Vol 25 (17) ◽  
pp. 5892-5903 ◽  
Author(s):  
Gustavo Naumann ◽  
Walter M. Vargas
Keyword(s):  
Principal Component ◽  
Bimodal Distribution ◽  
Daily Basis ◽  
First Century ◽  
Maximum Temperature ◽  
Daily Maximum ◽  
South American ◽  
Regional Variability ◽  
Temperature Forecasting

Abstract The main goal of this work was to conduct an intraseasonal climate variability analysis using wavelet and principal component analysis over a southeastern South American daily maximum and minimum temperature series from the end of the nineteenth until the beginning of the twenty-first century. The analysis showed that there is a definite and coherent signal in the intraseasonal maximum and minimum temperatures. The most noticeable signal was observed during the winter months. The frequency of the intraseasonal signal was more complex for the maximum temperature, and in some stations, it displayed a bimodal distribution. A defined pattern that described a coherent variability between 30 and 60 days throughout the entire region was observed. This pattern potentially allows classification of the regional variability and adjustments to the temperature forecasting models on a daily basis.

Phylogenetic Systematics of Peccaries (Tayassuidae: Artiodactyla) and a Classification of South American Tayassuids

2016 ◽  
Vol 24 (3) ◽  
pp. 345-358 ◽  
Author(s):  
Rodrigo Parisi Dutra ◽  
Daniel de Melo Casali ◽  
Rafaela Velloso Missagia ◽  
Germán Mariano Gasparini ◽  
Fernando Araujo Perini ◽  
...  
Keyword(s):  
Phylogenetic Systematics ◽  
South American

scholarly journals Taxonomic classification methods reveal a new subgenus in the paramyxovirus subfamily Orthoparamyxovirinae

2021 ◽  
Author(s):  
Heather L Wells ◽  
Elizabeth Loh ◽  
Alessandra Nava ◽  
Mei Ho Lee ◽  
Jimmy Lee ◽  
...  
Keyword(s):  
Full Length ◽  
Taxonomic Classification ◽  
Sequence Length ◽  
South American ◽  
Phenotypic Data ◽  
Vast Number ◽  
New Subgenus ◽  
Public Repositories ◽  
Viral Sequences

As part of a broad One Health surveillance effort to detect novel viruses in wildlife and people, we report several paramyxoviruses sequenced primarily from bats during 2013 and 2014 in Brazil and Malaysia, including seven from which we recovered full-length genomes. Of these, six represent the first full-length paramyxovirus genomes sequenced from the Americas, including two sequences which are the first full-length bat morbillivirus genomes published to date. Our findings add to the vast number of viral sequences in public repositories that have been increasing considerably in recent years due to the rising accessibility of metagenomics. Taxonomic classification of these sequences in the absence of phenotypic data has been a significant challenge, particularly in the paramyxovirus subfamily Orthoparamyxovirinae, where the rate of discovery of novel sequences has been substantial. Using pairwise amino acid sequence classification (PASC), we describe a novel genus within this subfamily tentatively named Jeishaanvirus, which we propose should include as subgenera Jeilongvirus, Shaanvirus, and a novel South American subgenus Cadivirus. We also highlight inconsistencies in the classification of Tupaia virus and Mojiang virus using the same demarcation criteria and show that members of the proposed subgenus Shaanvirus are paraphyletic. Importantly, this study underscores the critical importance of sequence length in PASC analysis as well as the importance of biological characteristics such as genome organization in the taxonomic classification of viral sequences.

Studies on two new coccidia from the Venezuelan lizard Cnemidophorus lemniscatus lemniscatus: Hoarella garnhami gen.nov., sp.nov. and Eimeria flaviviridis americana subsp.nov.

Parasitology ◽  
1963 ◽  
Vol 53 (1-2) ◽  
pp. 95-107 ◽  
Author(s):  
Lucila Arcay de Peraza
Keyword(s):  
The Other ◽  
South American ◽  
The South ◽  
The Family

This work contains the description of two new Coccidia parasitic in the South American lizard Cnemidophorus lemniscatus lemniscatus. One is identified as Eimeria flaviviridis americana subsp.nov., which is described and discussed in relation to the other species recorded from sauria. The other is Hoarella garnhami gen.nov., sp.nov., whose position in the family Eimeriidae necessitated a revision of the classification of the Coccidia Eimeriidae.I wish to acknowledge the help and encouragement I received from Professor P. C. C. Garnham, in whose department this work was carried out. My thanks are also due to Dr Cecil Hoare for his private communications and assistance in the interpretation of histological specimens. The author is grateful for co-operation of the School's Photograph Staff and to members of the staff of the Department of Parasitology, especially to Mr P. E. Nesbitt for his valuable sections. Finally, the author is indebted to the Consejo de Desarrollo Cientifico y Humanístico de la Universidad Central, Caracas, for their assistance in the form of a scholarship during the tenure of which this work was produced.

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