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A new Clymenura (Polychaeta: Maldanidae) from the intertidal of Banks Peninsula, New Zealand, with a reassessment of Leiochone Grube, 1868 and Clymenura Verrill, 1900
No full textRead, Geoffrey B. (2011): A new Clymenura (Polychaeta: Maldanidae) from the intertidal of Banks Peninsula, New Zealand, with a reassessment of Leiochone Grube, 1868 and Clymenura Verrill, 1900. Zootaxa 2934: 39-52, DOI: 10.5281/zenodo.27808
FIGURE 5. Platynereis juvenile dorsal pigmentation pattern, A–C, P. australis, P in Taxonomy of sympatric New Zealand species of Platynereis, with description of three new species additional to P. australis (Schmarda) (Annelida: Polychaeta: Nereididae)
No full textFIGURE 5. Platynereis juvenile dorsal pigmentation pattern, A–C, P. australis, P. mahanga sp. nov., P. k a u sp. nov. respectively. Scale bar 0.5 mm.Published as part of Read, Geoffrey B., 2007, Taxonomy of sympatric New Zealand species of Platynereis, with description of three new species additional to P. australis (Schmarda) (Annelida: Polychaeta: Nereididae), pp. 1-28 in Zootaxa 1558 on page 16, DOI: 10.5281/zenodo.17829
Platynereis Kinberg 1866
No full textGenus Platynereis Kinberg 1866 Includes Iphinereis Malmgren, 1865; Pisenoe Kinberg, 1866; Leontis Malmgren, 1867; Nectonereis Verrill, 1873, Uncinereis Chamberlin, 1919. Type species: Platynereis magalhaensis Kinberg 1866, by subsequent designation (Hartman 1948) Diagnosis. Proboscis with chitinous paragnaths in form of parallel rows of minute pectinate bars usually present on all areas except I, II, and V. Prostomium with 2 antennae, biarticulate palps, and 2 pairs of eyes; 4 pairs of tentacular cirri. Peristomial segment apodous and first 2 parapodia sub-biramous. Chaetae include spinigers and falcigers. Homogomph notopodial falcigers usually present, at least in juveniles. Remarks. Recent morphology-based parsimony analyses of taxa selected as representative of the Nereididae genera have maintained Platynereis as monophyletic (Bakken & Wilson 2005; Santos et al. 2005).Published as part of Read, Geoffrey B., 2007, Taxonomy of sympatric New Zealand species of Platynereis, with description of three new species additional to P. australis (Schmarda) (Annelida: Polychaeta: Nereididae), pp. 1-28 in Zootaxa 1558 on page 4, DOI: 10.5281/zenodo.17829
Platynereis australis
No full text<i>Platynereis australis</i> -group indeterminate <p> <i>Nereis australis</i>.— Ehlers 1904:26 –28, pl.3, fig.16–20; pl.4, fig.1–2, Sumner & Lyttleton (Mus. Göttingen). Ehlers 1905:287, no figures, repeat record. Ehlers 1907:11, no figures, Campbell Island; Otago Harbour; Blueskin Bay. Benham 1909a:238 –242, pl.9, fig.1, Perseverance Harbour, Campbell I; Macquarie Island; etc. Benham 1909b:73, no figures, Chatham Islands unspecified. Benham 1950:12 –13, no figures, Auckland Island (6 locations); Campbell Island (3 locations).</p> <p> <i>Nereis (Platynereis) australis</i>.— Augener 1923:27 –39, fig.16, Carnley Harbour, etc, Auckland I; Perseverance Harbour, Campbell I. Augener 1924:354 –356, no figures, North Channel at Kawau Island; North Cape; Sumner, etc. Augener 1927:348, no figures, Tauranga (offshore and shore). Augener 1932b:105 –106, no figures, Perseverance Harbour, Campbell Island.</p> <p> <i>Nereis (Platynereis) dumerili</i> [sic (<i>dumerilii</i>)].— Augener 1926:292, no figures, Perseverance Harbour, Campbell I. Augener 1932b:106, no figures, Perseverance Harbour, Campbell Island.</p> <p> <i>Platynereis australis</i>.— Knox 1951:223 –225, pl.49, fig.34–40, Banks Peninsula coast unspecified. Knox 1960:124, [In part] Chatham Island. Estcourt 1967:70, no figures, Heathcote Estuary, Christchurch. Knox & Cameron 1970:80, no figures, Snares Islands.</p> <p> <i>Remarks</i>. Records of atokes attributed to <i>P. australis</i> in prior literature potentially contain a mix of <i>P. australis</i> group species, including <i>P. australis</i> itself, and cannot now be assigned to species within the group. Similarly there are a large number of atoke specimen lots in the NIWA collection that cannot be determined to species, with over 130 station records of atoke <i>Platynereis</i> species from on or near the shores of the New Zealand mainland islands, the Chatham Islands, the Three Kings Islands, and the subantarctic islands of Antipodes, Auckland, Campbell, Macquarie, and Snares Islands (data available on request).</p>Published as part of <i>Read, Geoffrey B., 2007, Taxonomy of sympatric New Zealand species of Platynereis, with description of three new species additional to P. australis (Schmarda) (Annelida: Polychaeta: Nereididae), pp. 1-28 in Zootaxa 1558</i> on page 20, DOI: <a href="http://zenodo.org/record/178292">10.5281/zenodo.178292</a>
Platynereis
No full textKey to <i>Platynereis</i> heteronereids of New Zealand coasts <p>1. Pygidium bearing a rosette, fan, or semicircle of papillae, dorsal cirri papillated in natatory region, and sperm present in coelom.................................................................................................................2 (Males)</p> <p>– Pygidium unmetamorphosed, dorsal cirri smooth in natatory region, and eggs present in coelom.................................................................................................................................................................. 5 (Females)</p> <p>2. Pre-natatory segments total 14..................................................................................................................... 3</p> <p>– Pre-natatory segments total 18 or more....................................................................................................... 4</p> <p> 3. Pygidium with a fan of 8 papillae, a posterior middorsal line of papillae absent (Fig. 2B).......................... <i>........................................................................................................................ Platynereis kau</i> <b>sp. nov.</b> male</p> <p> – Pygidium with a semicircle of 12 (11–13) blunt papillae, a posterior mid dorsal line of papillae present (Figs. 4D,E) <i>............................................................................................... Platynereis karaka</i> <b>sp. nov.</b> male</p> <p> 4. Pre-natatory segments total 18 (17–18), pygidium a fan of 8 papillae (Fig. 2B).......................................... <i>............................................................................................................... Platynereis mahanga</i> <b>sp. nov.</b> male</p> <p> – Pre-natatory segments total 27 (26–29), pygidium a three-part rosette (Fig. 1N)......................................... <i>............................................................................................................................. Platynereis australis</i> male</p> <p>5. Posterior unmodified segments present....................................................................................................... 6</p> <p>– Posterior unmodified segments absent, or segments transitional................................................................ 7</p> <p> 6. Pre-natatory segments total 33 (31–36), first 6 (5–7) dorsal cirri enlarged, white eggs............................... <i>.......................................................................................................................... Platynereis australis</i> female</p> <p> – Pre-natatory segments total 24 (22–25), first 5 (5–7) dorsal cirri enlarged, blue eggs................................. <i>............................................................................................................ Platynereis mahanga</i> <b>sp. nov.</b> female</p> <p> 7. Pre-natatory segments total 18, first 7 (6–7) dorsal cirri enlarged, white eggs............................................. <i>..................................................................................................................... Platynereis kau</i> <b>sp. nov.</b> female</p> <p> – Pre-natatory segments total 17, first 5 dorsal cirri enlarged, pale blue eggs................................................. <i>............................................................................................................... Platynereis karaka</i> <b>sp. nov.</b> female</p>Published as part of <i>Read, Geoffrey B., 2007, Taxonomy of sympatric New Zealand species of Platynereis, with description of three new species additional to P. australis (Schmarda) (Annelida: Polychaeta: Nereididae), pp. 1-28 in Zootaxa 1558</i> on page 4, DOI: <a href="http://zenodo.org/record/178292">10.5281/zenodo.178292</a>
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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