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

Phylogeny and classification of aquatic bugs (Heteroptera, Nepomorpha). An essay review of Mahner's 'Systema Cryptoceratum Phylogeneticum'

1995 ◽  
Vol 26 (2) ◽  
pp. 159-166 ◽  
Author(s):  
Nils Møller Andersen
Keyword(s):  
Essay Review ◽  
Phylogenetic Systematics ◽  
Systematic Account ◽  
Major Work ◽  
Current Trends ◽  
Methodological Procedures ◽  
Aquatic Bugs

AbstractThis essay is essentially a review of the monographic work by the German zoologist Martin Mahner : 'Systema Cryptoceratum Phylogeneticum (Insecta, Heteroptera)' (Zoologica, Heft 143, Stuttgart 1993). The monograph is the most comprehensive systematic account of the aquatic bugs to date and the first major work on this group where the principles of phylogenetic (cladistic) systematics are consistently applied. Mahner follows the principles of the 'konsequentphylogenetische oder cladistischen Systematik', being Willi Hennig's phylogenetic systematics as interpreted and modified by Peter Ax. The methodological procedures recommended by this school of systematics is controversial, however, and call for a broader discussion of current trends in systematics as exemplified by the phylogeny and classification of the aquatic bugs.

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.

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