1,720,975 research outputs found
Describing biodiversity in the genomics era: A new species of Nearctic Cynipidae gall wasp and its genome
No full textBrandão-Dias, Pedro F. P., Zhang, Yuanmeng Miles, Pirro, Stacy, Vinson, Camila C., Weinersmith, Kelly L., Ward, Anna K. G., Forbes, Andrew A., Egan, Scott P. (2022): Describing biodiversity in the genomics era: A new species of Nearctic Cynipidae gall wasp and its genome. Systematic Entomology 47 (1): 94-112, DOI: 10.1111/syen.1252
Fig. 4 in Describing biodiversity in the genomics era: A new species of Nearctic Cynipidae gall wasp and its genome
No full textFig. 4. Emergence Phenology of Neuroterus valhalla. Boxplot of the emergence date of each generation (n = 14 stem node generation, n = 117 catkin generation). Boxes indicate 25 and 75 percentiles, horizontal bars the range and vertical internal bar indicates the mean emergence date.Published as part of Brandão-Dias, Pedro F. P., Zhang, Yuanmeng Miles, Pirro, Stacy, Vinson, Camila C., Weinersmith, Kelly L., Ward, Anna K. G., Forbes, Andrew A. & Egan, Scott P., 2022, Describing biodiversity in the genomics era: A new species of Nearctic Cynipidae gall wasp and its genome, pp. 94-112 in Systematic Entomology 47 (1) on page 100, DOI: 10.1111/syen.12521, http://zenodo.org/record/590358
Fig. 6 in Describing biodiversity in the genomics era: A new species of Nearctic Cynipidae gall wasp and its genome
No full textFig. 6. Maximum-likelihood UCE phylogeny of Cynipini. Tree based on the 50% complete UCEmatrix using best partitions selected by ModelFinder. Strongly supported nodes (≥80% SH-aLRT and ≥95% UFBoot values) are shown with black dots. Branch lengths represent genetic distance.Published as part of Brandão-Dias, Pedro F. P., Zhang, Yuanmeng Miles, Pirro, Stacy, Vinson, Camila C., Weinersmith, Kelly L., Ward, Anna K. G., Forbes, Andrew A. & Egan, Scott P., 2022, Describing biodiversity in the genomics era: A new species of Nearctic Cynipidae gall wasp and its genome, pp. 94-112 in Systematic Entomology 47 (1) on page 104, DOI: 10.1111/syen.12521, http://zenodo.org/record/590358
Brain-encysting trematodes (Euhaplorchis californiensis) decrease raphe serotonergic activity in California killifish (Fundulus parvipinnis)
Get PDFModulation of brain serotonin (5-HT) signalling is associated with parasite-induced changes in host behaviour, potentially increasing parasite transmission to predatory final hosts. Such alterations could have substantial impact on host physiology and behaviour, as 5-HT serves multiple roles in neuroendocrine regulation. These effects, however, remain insufficiently understood, as parasites have been associated with both increased and decreased serotonergic activity. Here, we investigated effects of trematode Euhaplorchis californiensis metacercariae on post-stress serotonergic activity in the intermediate host California killifish (Fundulus parvipinnis). This parasite is associated with conspicuous behaviour and increased predation of killifish by avian end-hosts, as well as inhibition of post-stress raphe 5-HT activity. Until now, laboratory studies have only been able to achieve parasite densities ( parasites/unit host body mass) well below those occurring in nature. Using laboratory infections yielding ecologically relevant parasite loads, we show that serotonergic activity indeed decreased with increasing parasite density, an association likely indicating changes in 5-HT neurotransmission while available transmitter stores remain constant. Contrary to most observations in the literature, 5-HT activity increased with body mass in infected fish, indicating that relationships between parasite load and body mass may in many cases be a real underlying factor for physiological correlates of body size. Our results suggest that parasites are capable of influencing brain serotonergic activity, which could have farreaching effects beyond the neurophysiological parameters investigated here
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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 PDFWe 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
Get PDFWe 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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