1,720,999 research outputs found

    Phylogenetic placement of the European sand gobies in Gobionellidae and characterization of gobionellid lineages (Gobiiformes: Gobioidei)

    No full text
    Thacker, Christine E. (2013): Phylogenetic placement of the European sand gobies in Gobionellidae and characterization of gobionellid lineages (Gobiiformes: Gobioidei). Zootaxa 3619 (3): 369-382, DOI: 10.11646/zootaxa.3619.3.

    Gnatholepis knighti Jordan & Evermann 1903

    No full text
    GNATHOLEPIS KNIGHTI JORDAN & EVERMANN, 1903: 204 (FIG. 2) G. anjerensis Randall & Greenfield, 2001 (part), Myers, 1999 (part). G. cauerensis Randall, 1983, 1995 (part), Lieske and Myers, 1999 (part).Published as part of Thacker, Christine, 2004, Phylogeny and species boundaries in the gobiid genus Gnatholepis (Teleostei: Perciformes), pp. 573-582 in Zoological Journal of the Linnean Society 142 (4) on page 579, DOI: 10.1111/j.1096-3642.2004.00142.x, http://zenodo.org/record/543230

    Figure 3 in Phylogeny and species boundaries in the gobiid genus Gnatholepis (Teleostei: Perciformes)

    No full text
    Figure 3. Left lateral views of A, Gnatholepis anjerensis (LACM 55960–4; 30.3 mm SL), B, G. knighti (LACM 55973.001; 26.7 mm SL), C, G. scapulostigma (LACM 55960–5; 34.4 mm SL). The meristic counts for these species overlap and there is a great deal of intra- and interspecific variation in colour pattern for most characters. The morphological character that distinguishes these species and accords with clades revealed in the DNA sequence analysis is the presence of a spot dorsal to the pectoral fin, with or without a pale centre (in G. scapulostigma and G. thompsoni), absence of such a spot (in G. anjerensis), or presence of a narrow dash-shaped mark dorsal to the pectoral fin (in G. knighti).Published as part of Thacker, Christine, 2004, Phylogeny and species boundaries in the gobiid genus Gnatholepis (Teleostei: Perciformes), pp. 573-582 in Zoological Journal of the Linnean Society 142 (4) on page 578, DOI: 10.1111/j.1096-3642.2004.00142.x, http://zenodo.org/record/543230

    FIGURE 1 in Phylogenetic placement of the European sand gobies in Gobionellidae and characterization of gobionellid lineages (Gobiiformes: Gobioidei)

    No full text
    FIGURE 1. Phylogeny of Gobiidae and Gobionellidae, rooted with the outgroup Oxyeleotris lineolata (Butidae). The sand goby Pomatoschistus minutus is in boldface. This topology resulted from both Bayesian and likelihood analysis; numbers at nodes are support values, listed as posterior probability/bootstrap value. Bootstrap values less than 50% are indicated by '-'. Nodes with both posterior probability and bootstrap values of less than 50% are collapsed.Published as part of <i>Thacker, Christine E., 2013, Phylogenetic placement of the European sand gobies in Gobionellidae and characterization of gobionellid lineages (Gobiiformes: Gobioidei), pp. 369-382 in Zootaxa 3619 (3)</i> on page 377, DOI: 10.11646/zootaxa.3619.3.6, <a href="http://zenodo.org/record/10097431">http://zenodo.org/record/10097431</a&gt

    Fig. 1 in Phylogeny and Biogeography of the Eleotrid Genus Hypseleotris (Teleostei: Gobioidei: Eleotridae), With Redescription of H. cyprinoides

    No full text
    Fig. 1. Strict consensus of 189 most parsimonious hypotheses of Hypseleotris relationships. The numbers at nodes are decay index values, and changes of selected morphological characters are indicated with hash marks and the character number and state change (characters are represented with DELTRAN optimization). The species name and collection locality are indicated, and clades discussed in the text are lettered. In the southeastern species, abbreviations after the name and locality indicate the province or drainage basin: East Coast (EC, also known as Eastern Province), Murray-Darling Basin (MDB, Murray-Darling Province), or Lake Eyre Basin (LEB, Central Australian Province).Published as part of Thacker, Christine & Unmack, Peter J., 2005, Phylogeny and Biogeography of the Eleotrid Genus Hypseleotris (Teleostei: Gobioidei: Eleotridae), With Redescription of H. cyprinoides, pp. 1-13 in Records of the Australian Museum 57 (1) on page 4, DOI: 10.3853/j.0067-1975.57.2005.1436, http://zenodo.org/record/575532

    FIGURE 2 in Phylogenetic placement of the European sand gobies in Gobionellidae and characterization of gobionellid lineages (Gobiiformes: Gobioidei)

    No full text
    FIGURE 2. Cleared and stained suspensoria for representatives of Gobiidae and Gobionellidae. A = anguloarticular; D = dentary; E = ectopterygoid; H = hyomandibula; IO = interopercle; M = metapterygoid; MA = maxilla; O = opercle; P = palatine; PM = premaxilla; PO = preopercle; Q = quadrate; S = symplectic; SO = subopercle. Black arrows indicate dorsal extent of ectopterygoid; white arrows indicate ventral extent of palatine. A) Gobiidae: Microgobius gulosus UMMZ 158862; B) Mugilogobius lineage: Pomatoschistus minutus LACM 38466-2; C) Mugilogobius lineage: Chlamydogobius ranunculus LACM 44624-1; D) Stenogobius lineage: Gnatholepis anjerensis LACM 55960-4; E) Northern Pacific lineage: Gillichthys mirabilis LACM 42690-3; F) Periophthalmus lineage: Periopthalmus sp. LACM 38331-1. Scale bars = 1mm. Note that palatine in (B) is deflected slightly dorsally away from the ectopterygoid, in order to clearly show the extents of the bones. Normally, those bones are closely apposed to one another.Published as part of <i>Thacker, Christine E., 2013, Phylogenetic placement of the European sand gobies in Gobionellidae and characterization of gobionellid lineages (Gobiiformes: Gobioidei), pp. 369-382 in Zootaxa 3619 (3)</i> on page 378, DOI: 10.11646/zootaxa.3619.3.6, <a href="http://zenodo.org/record/10097431">http://zenodo.org/record/10097431</a&gt

    Going Beyond Counting First Authors in Author Co-citation Analysis

    Get PDF
    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

    Get PDF
    “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

    Get PDF
    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
    corecore