1,721,100 research outputs found
FIGURE 1 in Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae)
FIGURE 1. Map of Argentina showing the localities from which the tissue samples were taken. Different colors indicate different eco–regions. Legends near sample localities are in accordance with the haplotypes shown in the phylogenetic trees (Fig. 2).Published as part of Bravi, Claudio M., 2017, Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae), pp. 487-504 in Zootaxa 4320 (3) on page 489, DOI: 10.11646/zootaxa.4320.3.5, http://zenodo.org/record/89386
FIGURE 3 in Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae)
FIGURE 3. Ultrametric trees obtained by the two-step method of McCartney & Barreto (2010), showing the divergence times within the family Testudinidae (A) and the divergence times within the C. chilensis complex (B). Numbers above the nodes indicate median of node ages, red numbers below the nodes indicate the clades belonging to the genus Chelonoidis (see table 5).Published as part of Bravi, Claudio M., 2017, Phylogenetic and divergence time analysis of the Chelonoidis chilensis complex (Testudines: Testudinidae), pp. 487-504 in Zootaxa 4320 (3) on page 495, DOI: 10.11646/zootaxa.4320.3.5, http://zenodo.org/record/89386
La evidencia molecular del poblamiento humano de América
Se revisan someramente los aportes de la arqueología, la lingüística histórica y la bioantropología al estudio del origen de las poblaciones nativas americanas, y se profundiza en aquellos aspectos derivados del estudio de la información albergada en macromoléculas biológicas, recuperada tanto a partir de individuos contemporáneos como de individuos antiguos. Diversas líneas de evidencia confirman el origen asiático y reciente de las poblaciones indígenas americanas, como así también su escasa diversidad genética relativaThe contributions of Archaeology, Historical Linguistics and Bioanthropology to the study of the origin of Native Americans are briefly reviewed, and a more deep coverage is given to those studies based on information retrieved from biological macromolecules derived from both extant and extinct individuals. Different lines of evidence confirm the Asiatic affinities and the recent origin of the indigenous American populations, as well as its relatively low genetic diversity.Fil: Bravi, Claudio Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentin
An update of Africanization in honey bee (Apis mellifera) populations in Buenos Aires, Argentina
European and African honey bee populations have been separated and influenced by different environments. Furthermore, Apis mellifera is the only species of honey bees that evolved in Europe, the Middle East, and Africa, where several subspecies are recognized. A. m. scutellata was introduced in Brazil in 1956, resulting in the spread of African bees throughout South and Central America. The aim of the present study was to determine the prevalence and geographical distribution of Africanized bees in Buenos Aires province (Argentina) employing a mtDNA cytochrome b polymorphism. A total of 430 colonies were sampled between 2013 and 2014; eighteen out of them (4,2%) belonged to African linage. Our results confirm that European haplotypes are the most prevalent in Buenos Aires Province, and that the process of African gene introgression remains stable since 2005.Fil: Genchi García, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Reynaldi, Francisco José. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Bravi, Claudio Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentin
Sequence variation of mitochondrial DNA control region in North Central Venezuela
Fil: Castro de Guerra, Dinorah Tibisay. Instituto Venezolano de Investigaciones Científicas; VenezuelaFil: Figuera Pérez, C.. Instituto Venezolano de Investigaciones Científicas; VenezuelaFil: Bravi, Claudio Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Saunier, J.. Armed Forces DNA Identification Laboratory; Estados UnidosFil: Scheible, M.. Armed Forces DNA Identification Laboratory; Estados UnidosFil: Irwin, J.. Armed Forces DNA Identification Laboratory; Estados UnidosFil: Coble, M. D.. Armed Forces DNA Identification Laboratory; Estados UnidosFil: Rodríguez Larralde, A.. Instituto Venezolano de Investigaciones Científicas; Venezuel
Going Beyond Counting First Authors in Author Co-citation Analysis
The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Sequencing errors in Native American mitogenomes: impact on clade definitions, haplogroup assignation, and beyond
Available evidence allows the interpretation that some cases of absence of otherwise expected variation, based on phylogenetic expectations in mitogenomes of Native American origin, are due to artificial recombination rather than to homoplasy, while other more complex scenarios involving combination of original Cambridge Reference Sequence mistakes plus incomplete or incorrect scoring of variation are also showed. Several instances of mismatched control and coding regions as well as partially duplicated HV2 are observed in Peruvians, while intra-haplogroup chimaeras of different D1 subhaplogroups are referred to in Mexican Native Americans. A revised definition for haplogroup B2h is proposed, and preventive quality control measures are suggested.Fil: Bravi, Claudio Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: de la Fuente, Constanza. University of Chicago; Estados UnidosFil: Rodríguez Golpe, Daniela Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Motti, Josefina María Brenda. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Sociales. Departamento de Arqueología. Laboratorio de Ecología Evolutiva Humana (Sede Quequén); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; ArgentinaFil: Bravi, Claudio Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentin
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