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Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis
No full textBullard, Matthew R. Womble and Stephen A. (2022): Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis. Journal of Parasitology 108 (4): 374-394, DOI: 10.1645/22-36, URL: http://dx.doi.org/10.1645/22-3
Figures 15–17 in Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis
No full textFigures 15–17. Naturally shed cercaria of Leuceruthrus blaisei from Elimia sp. 2 from Simmons Creek, Alabama. (15) Cercaria (USNM 1593592) showing pharynx (p), ceca (c), prostatic sac (ps), ventral sucker (vs), ovary (o), testes (t), and furcae (f). Dorsal view. (16) Anterior tail stem showing tegumental protuberances densely distributed near tail cavity opening (arrowheads). (17) Furcae (f).Published as part of Bullard, Matthew R. Womble and Stephen A., 2022, Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis, pp. 374-394 in Journal of Parasitology 108 (4) on page 387, DOI: 10.1645/22-36, http://zenodo.org/record/775394
Figures 3–8 in Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis
No full textFigures 3–8. Naturally shed cercaria of Leuceruthrus cf. stephanocauda from Elimia spp. from Big Canoe Creek, Alabama. (3) Cercaria (USNM 1593584) showing tail cavity opening (tco), position of tail stem spines (s), anterior (ats) and posterior tail stem (pts) regions, location of the distome, showing pharynx (p), ceca (c), prostatic sac (ps), ventral sucker (vs), testes (t), ovary (o),, and paired lanceolate furcae (f). Dorsal view. (4) Anterior tail stem region showing anterior row of tail stem spines (arrowheads). (5) Tail stem spine. (6) Tail stem spine. (7) Anterior tail stem showing posterior row of tail stem spines (arrowheads). (8) Posterior tail stem showing marginal placement of associated protuberances (p).Published as part of Bullard, Matthew R. Womble and Stephen A., 2022, Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis, pp. 374-394 in Journal of Parasitology 108 (4) on page 382, DOI: 10.1645/22-36, http://zenodo.org/record/775394
Figures 1, 2 in Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis
No full textFigures 1, 2. (1) Adult of Leucer- uthrus micropteri Marshall and Gil- bert, 1905 from largemouth bass, Micropterus salmoides from Wheeler Reservoir, Alabama (USNM 1593581) showing mouth (m), oral sucker (os), pharynx (p), ceca (c) near origin, prostatic sac (ps), genital atrium (ga), genital pore (gp), ventral sucker (vs), distal end of uterus (ud), testes (t), vitellarium (vi), uterus origin (uo) near ovary (o), vitelline reservoir (vr), con- fluence of excretory ducts (ed), excre- tory bladder (eb), and excretory pore (ep). Ventral view. (2) Terminal male genitalia of L. micropteri (USNM 1593581) showing comparable features as illustrated in Fig. 1 plus seminal vesicle (sv), pars prostatica (pp), me- traterm (mt), and hermaphroditic pore (hp). Ventral view.Published as part of Bullard, Matthew R. Womble and Stephen A., 2022, Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis, pp. 374-394 in Journal of Parasitology 108 (4) on page 379, DOI: 10.1645/22-36, http://zenodo.org/record/775394
Figures 9–14 in Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis
No full textFigures 9–14. Leuceruthrus from Holmes Creek, Florida. (9–13) Naturally shed cercaria of Leuceruthrus ksepkai n. sp. from Elimia floridensis from Holmes Creek, Florida. (9) Cercaria (USNM 1593587) showing tail cavity opening (tco), position of anterior ridge (ar), and anterior collar (ac), anterior (ats) and posterior tail stem (pts) regions, location of the distome, showing pharynx (p), ceca (c), prostatic sac (ps), ventral sucker (vs), testes (t), ovary (o), and paired oblong furcae (f). Dorsal view. (10) Anterior portion of tail stem accommodating the withdrawn distome. (11) Illustration of posterior tail stem showing position of associated protuberances. (12) Posterior tail stem showing position of associated protuberances. SEM. (13) Highmagnification view of a posterior tail stem protuberance. SEM. (14) Adult of Leuceruthrus cf. ksepkai from stomach of largemouth bass, Micropterus salmoides from Holmes Creek, Florida (USNM 1593590) showing mouth (m), pharynx (p), ceca (c), prostatic sac (ps), genital pore (gp), ventral sucker (vs), testes (t), distal portion of uterus (ud), vitellarium (vi), origin of uterus (uo), ovary (o), vitelline reservoir (vr), excretory duct (ed), excretory bladder (eb), and excretory pore (ep). Ventral view.Published as part of Bullard, Matthew R. Womble and Stephen A., 2022, Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis, pp. 374-394 in Journal of Parasitology 108 (4) on page 384, DOI: 10.1645/22-36, http://zenodo.org/record/775394
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
Leuceruthrus stephanocauda Bullard 2022
No full text<i>Leuceruthrus</i> cf. <i>stephanocauda</i> <p>(Figs. 3 8; Table II)</p> <p> <i>Diagnosis of cercaria (based on light microscopy of 2 stained, whole-mounted, naturally shed cercariae with withdrawn distome) (Figs. 3 8):</i> Cercaria 3,320 3,580 (3,450, 2) long (Fig. 3). Tail stem lacking pigmentation, 2,600 2,900 (2,750, 2) long or 78 81% (80%, 2) of cercariae length, 510 660 (585, 2) wide or 4.4 5.1 (4.7, 2) X longer than wide, comprised of an anterior and posterior region (Fig. 3); anterior tail stem region (ATS) oblong, 1,320 1,460 (1,390, 2) long or 40 41% (40%, 2) of cercariae length, maximum width same as reported for tail stem, containing distome, tapering anteriorly, devoid of mammillae, armed with 2 rows of tail stem spines (Figs. 3 8); posterior tail stem region (PTS) dorsoventrally compressed, 1,280 1,440 (1,360, 2) long or 39 40% (39%, 2) of cercariae length, 360 340 (350, 2) wide, nearly uniform in width anteriorly to posteriorly, devoid of mammillae, lateral margins bearing many minute protuberances (Figs. 3, 8); PTS protuberances, minute, lacking pores, marginal (Fig. 8). Furcae lacking pigmentation, lanceolate, dorsoventrally compressed, margin bearing many protuberances, serrate (Fig. 3); furcal protuberances minute, pored, marginal; dorsal furca 660 700 (680, 2) long or 18 21% (19%, 2) of cercariae length, 320 380 (350, 2) wide or 1.7 2.2 X (2, 2) longer than wide; ventral furca 620 720 (670, 2) long or 17 22% (20%, 2) of cercariae length, 320 340 (330, 2) wide or 1.8 2.3 X (2, 2) longer than wide (Fig. 3). Tail cavity opening at anteromedial end of cercaria, directing anteriad (Fig. 3); tail stem cavity not evident. Mammillae not evident. Tail stem spines maximum length 40, maximum width 35 (Fig. 5), restricted to the anterior tail stem region, distributed in 2 concentric rows, anterior row encircling area near tail cavity opening (Figs. 3, 4), posterior row encircling area near synthesis of posterior tail stem (Figs. 3, 7). Excretory system with 1 primary excretory canal, extending posteriad along the medial axis of the posterior tail stem, bifurcating at the synthesis of the furcae, extending independently through each furca, opening via excretory pore at the distal end of each furca (Fig. 3).</p> <p>Body of distome (Fig. 3) 1,220 1,780 (1,500, 2) long or 37 50% (43%, 2) of cercaria length, 470 580 (525, 2) wide or 2.6 3 (2.8, 2) X longer than wider, anterior margin 30 40 (35, 2) from tail cavity opening; forebody 630 900 (765, 2) long or 51 52% (51, 2) of overall body length; hindbody 350 600 (475, 2) long or 29 34% (31%, 2) of overall body length, 56 67% (61%, 2) of forebody length; tegument unarmed. Excretory system not evident. Nervous system not evident. Oral sucker 360 370 (365, 2) long or 21 30% (25%, 2) of body length, 340 370 (355, 2) wide or 64 72% (68%, 2) of body width, 60 30 (45, 2) or 2 3% (3%, 2) of body length from anterior body end, 850 1,360 (1,105, 2) or 70 76% (73%, 2) of body length from posterior body end (Fig. 3). Ventral sucker in posterior half of body, with anterior margin 630 900 (765, 2) or 51 52% (51%, 2) of body length from anterior body end (Fig. 3), 290 300 (295, 2) long or 24 25% (24%, 2) of body length, 290 300 (295, 2) wide or 50 64% (57%, 2) of body width, 78 83% (81%, 2) of oral sucker length, 78 88% (83%, 2) of oral sucker width (Fig. 3). Pharynx ovoid, 100 140 (120, 2) long or 6 11% (9%, 2) of body length, 110 135 (123, 2) wide (Fig. 3). Esophagus extending posteriad from mouth before bifurcating posterior to pharynx, esophageal branches arching posterolaterad before joining with intestinal ceca (Fig. 3); dextral cecum 1,050 1,518 (1,284, 2) or 82 85% (84%, 2) of body length, laterad cecum length 150 163 (157, 2), descending cecum length 900 1,355 (1,128, 2), prececal space 375 550 (463, 2) or 29 31% (30%, 2) of body length from anterior end of body, postcecal space 20 50 (35, 2) or 2% (2%, 2) of body length from posterior end of body; sinistral cecum 1,000 1,620 (1,310, 2) or 78 91% (85%, 2) of body length, laterad cecum length 150 (150, 2), descending cecum length 850–1,470 (1,160, 2), prececal space 375 510 (443, 2) or 29 30% (29%, 2) of body length from anterior end of body, postcecal space 25 50 (38, 2) or 2 3% (2%, 2) of body length from posterior end of body. Testes abreast, round to oval (Fig. 3); dextral testis 50 (50, 2) long or 2 4% (3%, 2) of body length, 65 90 (78, 2) wide or 1.3 1.8 (1.6, 2) X wider than long; sinistral testis 60 (60, 2) long or 3 5% (4%, 2) of body length, 60 75 (68, 2) wide or 1 1.3 (1.1, 2) X wider than long; pretesticular space 810 1,180 (995, 2) from anterior end of body or 63 66% (65%, 2) of total body length; posttesticular space 300 540 (420, 2) from posterior end of body or 23 30% (27%, 2) of total body length. Vasa efferentia not evident. Prostatic sac 55 75 (65, 2) long, 90 110 (100, 2) wide or 1.5 1.6 (1.5, 2) X wider than long (Fig. 3). Genital atrium circular in ventral view, 25 30 (28, 2) in diameter. Genital pore 650 840 (745, 2) of body length from anterior end of body or at 47 50% (49%, 2) of body length. Fine features of terminal male genitalia (i.e., seminal vesicle, pars prostatica, ejaculatory duct, sinus organ) not evident.</p> <p>Ovary 140 210 (175, 2) of body length from posterior end of body, 65 70 (68, 2) long or 1.2 1.3 (1.2, 2) X longer than wide, 55 (55, 2) wide (Fig. 3). Fine features of terminal female genitalia (i.e., oviduct, Laurer’s canal, ovovitelline duct, oötype, and Mehlis’ gland) not evident. Uterus 430 655 (543, 2) long or 34 37% (35%, 2) of body length, 13 20 (17, 2) wide. Metraterm not evident. Vitellarium not developed in distome (Fig. 3).</p>Published as part of <i>Bullard, Matthew R. Womble and Stephen A., 2022, Azygiid Parasites Of North American Endemic Pleurocerids And Centrarchids: Revision Of Leuceruthrus Marshall And Gilbert, 1905 (Digenea: Azygiidae), Description Of Two New Species, And Phylogenetic Analysis, pp. 374-394 in Journal of Parasitology 108 (4)</i> on pages 382-383, DOI: 10.1645/22-36, <a href="http://zenodo.org/record/7753943">http://zenodo.org/record/7753943</a>
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