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The forgotten diversity of the genus Myxicola (Polychaeta: Sabellidae) in North America: redescription of historical taxa and description of two new species
No full textMyxicola Koch in Renier in Meneghini, 1847, is a genus of the family Sabellidae (Annelida: Polychaeta) well known for its funnel-shaped crown and showy colouration. Several taxa from the coasts of North America were described in the first half of the twentieth century. However, due to several subsequent synonymisations, the biodiversity of this genus in American waters was reduced to the presence of only two species, both with their type locality in Europe. Preliminary molecular data suggested that this view is largely incorrect, and that American Myxicola include several species. The re-examination of type material from two American museums (Museum of Comparative Zoology of Harvard University and Yale Paebody Museum of Natural History), as well as other historically collected specimens, allowed the re-establishment of several American Myxicola species. Myxicola conjuncta Bush, 1905, Myxicola affinis Bush, 1905 and Myxicola glacialis Bush, 1905 are redescribed and considered valid species, while Myxicola monacis Chamberlin, 1919 is regarded as synonymous with M. affinis. Lastly, specimens from the Gulf of Maine originally identified as Myxicola infundibulum Montagu, 1808 were found to belong to two new species.
http://www.zoobank.org/urn:lsid:zoobank.org:pub:38CF6282-FC6A-493A-AB8D-65AED10ABC16 http://www.zoobank.org/urn:lsid:zoobank.org:act:DA2796F7-5A5E-434A-9A79-87BB60C81BA2 http://www.zoobank.org/urn:lsid:zoobank.org:act:1EC9E4BC-010F-467A-98A0-460A0EEF173
Amphiglena Claparede 1864
No full textGenus Amphiglena Claparède, 1864 Type species: Amphicora mediterranea Leydig, 1851, subsequent designation by Bush (1905). The following diagnosis is based on that by Fitzhugh, 1989, revised by Capa & Rouse (2007). Diagnosis: Small-sized sabellin species bearing 5 to 8 pairs of radioles; radiolar skeleton with two rows of cells. Palmate membrane and radiolar flanges absent. Dorsal lips with dorsal radiolar appendages; dorsal pinnular appendages absent. Ventral lips absent; parallel lamellae absent. Ventral basal flanges of branchial crown present, as a pair of thin, erect, membranous flanges extending from the base of radioles and posteriorly across the anterior peristomial ring to proximal region of ventral-most radioles. Peristomial ring generally divided by a mid-ventral incision. Anterior margin of anterior peristomial ring low, of equal height all around, but often not visible all around because thinner and fused to the posterior ring. Posterior peristomial ring longer than the anterior ring with anterior margin horizontal or prolonged ventrally on both sides of the mid-ventral incision. Posterior peristomial ring collar absent. Variable number of thoracic chaetigers. Superior thoracic notochaetae broadly-hooded. Inferior thoracic notochaetae paleate, arranged in single transverse row. A single transverse row of abdominal neurochaetae assumed to be anterior row (posterior row absent); composed of elongate, broadly hooded chaetae. Thoracic uncini with teeth above main fang of equal size; hood absent; breast well developed, expanded; handles of variable length. Companion chaetae with distal end slightly inflated, dentate and with a thin mucro extending from this. Abdominal uncini with main fang surmounted by teeth of equal size; breast well developed, handles very short. Abdominal chaetiger not numerous. Pygidial eyes present.Published as part of Giangrande, Adriana, Putignano, Matteo, Licciano, Margherita & Gambi, Maria Cristina, 2021, The Pandora's box: Morphological diversity within the genus Amphiglena Claparède, 1864 (Sabellidae, Annelida) in the Mediterranean Sea, with description of nine new species, pp. 201-239 in Zootaxa 4949 (2) on page 204, DOI: 10.11646/zootaxa.4949.2.1, http://zenodo.org/record/463612
The Pandora’s box: Morphological diversity within the genus Amphiglena Claparède, 1864 (Sabellidae, Annelida) in the Mediterranean Sea, with description of nine new species
Full text linkin the Mediterranean Sea has been widely underestimated. Examined material derived from both new collections along
the Italian coast, including four CO2 vents/hydrothermal systems, and from a re-examination of older material previously
attributed to A. mediterranera (Leydig, 1851) which was so far the only species of the genus reported for the Mediterranean
area. The analysis revealed the presence of different taxa also consistent with a previous molecular analysis conducted
on material from the Gulf of Naples and the Salento coast (Ionian Sea). This led to an increase in the number of species
in the genus and to highlight the occurrence in the Mediterranean Sea of a high diversity within the genus. A key to the
Mediterranean Sea species of Amphiglena is also provided. Some taxa, however, remain for the moment undescribed due
to the poor preservation of the old material, and the lack of the type material for this taxon. A major revision of all the
Mediterranean material previously attributed to A. mediterranea from both morphological and molecular points of view
is needed
Non-indigenous polychaetes along the Salento Peninsula: new records and first molecular data
Full text linkThe Salento Peninsula represents the eastern -most edge of the Italian Peninsula, and one of the first areas to be invaded by thermophilic non -indigenous species. The diversity of non -indigenous polychaetes occurring along the Salento Peninsula is reviewed based on literature data and new samples. Overall, fifteen non -indigenous polychaetes were recorded; among them, Syllis similisunzima is reported for the first time in the Mediterranean Sea; Lepidonotus tenuisetosus is recorded for the first time in Italian waters; Pseudonereis anomala, until now known only for Sicily, is reported for the first time from the Italian Peninsula; Dorvillea similis is a first record for the Ionian and Adriatic Sea. 16S rDNA and COI sequences were obtained for eleven species, allowing us in some cases to confirm their identity and/or geographical origin, while in the case of some species they represent the first molecular data ever obtained
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
New combinations of two Pseudobranchiomma species (Annelida: Sabellidae): The difficulty in establishing a boundary layer among genera within the Sabellinae
No full textBu tezin, veri tabanı üzerinden yayınlanma izni bulunmamaktadır. Yayınlanma izni olmayan tezlerin basılı kopyalarına Üniversite kütüphaneniz aracılığıyla (TÜBESS üzerinden) erişebilirsiniz.ÖZET FİĞ {Vida sativa L.)'DE EKİM SIKLIĞI İLE DESTEK BİTKİSİ OLARAK KULLANILAN ARPA (Hordeum vulgare L.) VE YULAF (Avena sativa L.) ORANLARININ TOHUM VERİMİ VE VERİM ÖZELLİKLERİNE ETKİSİ ÖZPINAR, Hüseyin Doktora Tezi, Tarla Bitkileri Anabilim Dalı Tez Yöneticisi: Prof. Dr. Hikmet SOYA Mayıs 2000; 80 sayfa Ege Tarımsal Araştırma Enstitüsü deneme tarlalarında 1995 ve 1996 yıllarında yürütülen çalışmada, fiğ bitki miktarlarının (100, 150 ve 200 bitki/m2) ve destek bitki olarak kullanılan arpa ve yulaf karışım oranlarının (% 10, 20 ve 30), fiğ tohum verimi ve verim komponentlerine olan etkileri incelenmiştir. Fiğ bitki miktarlarının, genel olarak incelenen karakterler üzerine etkileri önemli bulunmamıştır. Karışık ekimlerin, fiğ tohum verimini, birim alandaki bakla ve dolgun bakla sayısını önemli derecede düşürdüğü, toplam tohum verimini ve fiğ bitki boyunu ise önemli derecede arttırdığı gözlenmiştir. Karışımlarda, destek bitkisi oranının % 20 'den fazla olmaması gerekmektedir. Karışık ekimde dekara 5-8,5 kg'a karşılık gelen 80-135 adet/m fiğ ve 0,8-1,6 kg/da arpa veya 0,5-1,0 kg/da yulafa karşılık gelen 10-30 adet/m2 destek bitkisinin kullanılabileceği sonucuna varılmıştır.VI Anahtar Sözcükler: Adi fiğ, Vicia sativa, arpa, Hordeum vulgare, yulaf, Avena sativa, karışım, tohum verimiVII ABSTRACT THE EFFECT OF SOWING RATE AND THE RATIOS OF BARLEY (Hordeum vulgare L.) AND OAT (Avena sativa L.) AS A COMPANION CROP ON SEED YIELD and YIELD COMPONENTS OF COMMON VETCH (Vicia sativa L.) ÖZPINAR, Hüseyin PhD in Field Crops Department Supervisor: Prof. Dr. Hikmet SOYA May, 2000: 80 pages This study was carried out at Aegean Agricultural Research Institute in 1995 and 1996. The effects of common vetch plant densities (100, 150 and 200 plants/m ) and barley or oat ratios in the mixture (10, 20 and 30 %) as companion crops on common vetch seed yield and yield components were observed. In general, vetch plant densities did not significantly affect characters measured. Companion crops significantly reduced common vetch seed yield, the number of pod and mature pod per unit area, and significantly increased total seed yield and common vetch plant height. The ratios of companion crop in the mixtures should not be higher than 20 percent. In mixture sowings, plant densities of 80-135 common vetch, 50-85 kg/ha, and 10-30 companion plants/m2, 8-16 kg/ha barley or 5-10 kg/ha oat, can be used.VIII Keywords: Common vetch, Vicia sativa, barley, Hordeum vulgare, oat, Avena sativa, mixture, seed yield
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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