1,720,960 research outputs found

    Fig. 3 in Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species

    No full text
    Fig. 3. Centrorhynchus globocaudatus from Falco tinnunculus: A — proboscis, {; B — total view, {; C — egg; D — hooks of a longitudinal row, {; E — terminal part of female reproductive system.Published as part of Lisitsyna, O. I. & Greben, O. B., 2015, Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species, pp. 195-210 in Vestnik Zoologii 49 (3) on page 201, DOI: 10.1515/vzoo-2015-0022, http://zenodo.org/record/645232

    Fig. 1 in Review Of The Helminths Parasitic In Rare Aquatic Birds In Ukraine

    No full text
    Fig. 1. Localities of the material collection: — based on collection and literature; — based on collection; — based on literature.Published as part of Lisitsyna, O. I., Greben, O. B. & Syrota, Ya. Yu., 2020, Review Of The Helminths Parasitic In Rare Aquatic Birds In Ukraine, pp. 173-182 in Zoodiversity 54 (3) on page 176, DOI: 10.15407/zoo2020.03.173, http://zenodo.org/record/637760

    Centrorhynchus magnus Kukui 1929

    No full text
    Centrorhynchus magnus Fukui, 1922 Syn. Centrorhynchus microrchis Fukui, 1929. D e s c r i p t i o n (by Fukui, 1929 from Petrochenko, 1958). Trunk cylindrical, anterior third or quarter slightly widened. Female 32–42 mm long, 700–1000 wide; male 20–26 mm long, 600–800 wide. Proboscis rather long; proboscis anterior part almost cylindrical, in male 680–750 long, 350–400 wide, in female 650–770 long, 350–490 wide; proboscis posterior part conical and the same long as the anterior. Males with 38–40 longitudinal rows in anterior part and 40–42 in posterior part. Female’s number rows greater than male’s by two. Each longitudinal row with 26–27 hooks, 15–17 large and with roots, 9–11 withоut roots. Female’s proboscis receptacle 550–1650 long. Limnisci cylindrical, almost twice longer than proboscis receptacle (1000–3000); extended to anterior testis. Testes ellipsoidal, 970–1220 long. Cement glands 4, cylindrical. Eggs elongate-oval, without polar prolongation of fertilization membrane, 35–48 × 16–20. Рис. 4. Centrorhynchus spinosus от Falco tinnunculus: A — хоботок, {; B — общий вид, {; C — яйцо; D — крючья продольного ряда, {. The species was described from birds of prey from Japan. It is recorded from the birds of the genera Milvus, Falco, Buteo, Circus, and Nycticorax, Egretta in Russia, Pakistan, Taiwan (Schmidt, Kuntz, 1969; Khokhlova, 1986). It is found in Ukraine in western marsh harrier Circus aeruginosus 1, common kestrel Falco tinnunculus 1 in Odesa Region (Vylkove) (Zhukov, 1956).Published as part of Lisitsyna, O. I. & Greben, O. B., 2015, Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species, pp. 195-210 in Vestnik Zoologii 49 (3) on pages 202-204, DOI: 10.1515/vzoo-2015-0022, http://zenodo.org/record/645232

    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

    Centrorhynchus globocaudatus Luhe 1911

    No full text
    Centrorhynchus globocaudatus (Zeder, 1800) Lühe, 1911 (fig. 3, A–E) Syn. Echinorhynchus globocaudatus Zeder, 1800; E. tuba Rudolphi, 1802, in part. Рис. 3. Centrorhynchus globocaudatus от Falco tinnunculus: A — хоботок, {; B — общий вид, {; C — яйцо; D — крючья продольного ряда, {; E — терминальная часть половой системы самки. G l o b a l (7 {, 14}). Trunk elongate, almost cylindrical. Proboscis rounded apical, then almost conical. Constrictions implicit. Neck short. Proboscis with 30–34 longitudinal rows of 19–21 hooks. First 5–6 hooks large with posteriorly directed strong roots. Next 3–5 hooks transitional, with composite scutiform «Х»-shaped root processes. Next 5–7 hooks spiniform with simple scutiform root processes, last 3–7 hooks spiniform with simple roots directed anteriorly. Length of blade increasing from first to third, then gradually decrease. Hook root length increasing from first to 5–6th then gradually decreasing. Proboscis receptacle double-walled, attach in middle proboscis. Lemnisci sacciform, longer than proboscis receptacle. Gonopore subterminal in both sexes. M a l e s. Trunk 11.95–18.80 (15.56) mm long, with maximum width in testis region 760–1080 (930). Proboscis 920–1130 (1050) long with maximum width in anterior part 300–354 (320), anterior part of proboscis up to level of attachment of proboscis receptacle 430–500 (450) long with width at attachment 280–330 (300). Proboscis with 30–34 (31.1) longitudinal rows of 19–21 (20.1) hooks. First 5–6 (5.6) hooks large with posteriorly directed strong roots. Hook blade length: 1, 40–50 (46.6); 2, 48–63 (54.5); 3, 50–68 (57.6); 4, 45–63 (52.2); 5, 45–55 (50); 6, 40–50 (49.6). Hook blade thickness: 1, 7–10 (8); 2, 10–13 (11); 3, 13; 4, 13; 5, 13–15 (13.8); 6, 13–15 (13.8). Hook root length: l, 30–40 (34.63); 2, 37–60 (46.3); 3, 43–60 (49.5); 4, 43–65 (51.7); 5, 45–63 (51.8); 6, 20–50 (32.5). Transitional hook blade length 38–45 (41), 7–13 (9) thick, hook root 37–45 (41.3) long, hook root processes 15–35 (23) long. Spiniform hook blade length 38–45 (40), hook root processes 17–30 (26) long. Proboscis receptacle 1100–1550 (1260) long with maximum width 230–370 (290). Neck short, 30–50 (40) long. Lemnisci 920–1900 (1500) long, extended to testes, overlie on anterior one. Testes in tandem slightly overlapping one another. First testis 730–1060 (910) × 430–660 (500), second testis 850–1080 (980) × 458–660 (546). Cement glands 7.83–11.08 (8.82) mm long. Säfftigen pouch 1.4–2.65 (2.21) mm long. Bursa invaginated 2000×1300. F e m a l e s. Trunk 15.01–40.00 (20.18) mm long, with maximum width in anterior part 800–1400 (1060). Proboscis 920–1180 (1060) long with maximum width in anterior part 300–400 (340), anterior part of proboscis up to level of attachment of proboscis receptacle 450–550 (470) long with width at attachment 280–360 (320). Proboscis with 30–36 (33) longitudinal rows of 19–21 (19.8) hooks. First 5–6 hooks large with posteriorly directed strong roots. Hook blade length: 1, 43–53 (47.7); 2, 53–63 (57.6); 3, 50–65 (60.7); 4, 45–65 (56.2); 5, 43–55 (48.6); 6, 35–50 (47.7). Hook blade thickness: 1, 6–7 (6.7); 2, 10–11 (10.2); 3, 12–13 (12.5); 4, 12–13 (12.7); 5, 12–18 (14.6); 6, 8–15 (11.8). Hook root length: 1, 25–50 (37.5); 2, 38–60 (50); 3, 45–68 (53.2); 4, 45–63 (53.2); 5, 30–63 (51.37); 6, 20–60 (42.3). Transitional hook blade length 38– 48 (42.3), 8 thick, hook root 18–43 (26.9) long. Spiniform hook blade length 37–45 (40), hook root processes 20–35 (25) long. Proboscis receptacle 1160–1620 (1300) long with maximum width 250–410 (360). Neck short, 30–50 (40) long. Lemnisci 920–2050 (1660) long. Eggs elongate-oval, without polar prolongation of fertilization membrane, 53–60 (56.1) × 24–30 (28.2). The species was described from birds of prey in Europe. It is recorded from the birds of the genera Athene, Milvus, Buteo, Circus, Aquila, Falco, Tyto, Anthus in Europe, Asia and Africa. It is found in Ukraine in black kate Milvus migrans (Boddaert, 1783) 1, common kestrel Falco tinnunculus 2, lesser kestrel Falco naumanni 2 in Chernihiv Region (Orlikivske forestry), Kherson Region (area of Black Sea Reserve, Velyka Oleksandrivka and peninsula Churyuk), Crimea (Tarhankut) (Smogorzhevskaya, 1954, 1976; Gritsenko, 1969; Khohlova, 1986 2 ; Lisitsyna, 1993, 2008).Published as part of Lisitsyna, O. I. & Greben, O. B., 2015, Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species, pp. 195-210 in Vestnik Zoologii 49 (3) on pages 201-202, DOI: 10.1515/vzoo-2015-0022, http://zenodo.org/record/645232

    Centrorhynchus spinosus Van Cleave 1924

    No full text
    Centrorhynchus spinosus (Kaiser, 1893) Van Cleave, 1924 fig. 4, A–E) Syn. Echinorhynchus spinosus Kaiser, 1893; Centrorhynchus spinosus Van Cleave, 1916; Centrorhynchus sp.: Смогоржевская, 1954, 1964, 1976. G e n e r a l (4 {, 3}). Trunk long, narrow to anterior and posterior parts, maximal width in middle. Pro boscis with evident winding before constricrtion. Neck implict. Proboscis with 30–36 longitudinal rows of 20–23 hooks. First 8–10 hooks large with posteriorly directed strong roots. Roots 2–6 hooks with anterior processes. Largest hooks with blades and roots approximately same lengh. Next 3–5 hooks transitional, with composite scutiform processes, bifurcated in anterior part. Remainder hooks spiniform with simple root processes or without them. Proboscis receptacle double-walled, cylindrical, attach in middle proboscis. Lemnisci sacciform, longer than proboscis receptacle. Gonopore subterminal in both sexes. M a l e s. Trunk 15.7–16.00 mm long, with maximum width in posterior part of lemnisces 1760–2000. Proboscis 1100–1160 long with maximum width in anterior part 400, anterior part of proboscis up to level of attachment of proboscis receptacle 700–780 long with width at attachment 290–350. Proboscis with 34–36 longitudinal rows of 20–22 hooks. First 8–9 hooks large with strong roots directed posteriorly. Largest hook blade length: 1, 50–58; 2, 58–60; 3, 58; 4, 58; 5, 53–55; 6, 43–53; 7, 40–48; 8, 40–45; 9, 30–38. Hook blade thickness: 1, 7; 2, 10; 3, 6 –12; 7, 9 –15. Hook root length: 1, 32–43; 2, 50–55; 3, 53–60; 4, 50– 60; 5, 48–55; 6, 50–55; 7, 50–55; 8, 55–60; 9, 37–63. Transitional hook blade length 5–38, 7–10 thick, roots 25–28 long. Remainder hook blade length 30–40, hook root processes 15–25 long. Proboscis receptacle 1160–1620 long with maximal width 400–500. Lemnisci 2400–2410 long, fall short of testes. Testes in tandem slightly overlapping one another. First testis 1030 × 610, second testis 1110 × 600. Cement glands 7.20–10.00 mm long. Säfftigen pouch 1920–2000 long. F e m a l e s. Trunk 28.00–30.00 mm long, with maximum width in posterior part of lemnisces 1700–2000. Proboscis 900–1100 long with maximum width in anterior part 350–390, anterior part of proboscis up to level of attachment of proboscis receptacle 610–720 long with width at attachment 280–330. Proboscis with 30–34 longitudinal rows of 22–23 hooks. First 9–10 hooks large with posteriorly directed strong roots. Their hook blade length: 1, 45–53; 2, 50–53; 3, 50–53; 4, 48–50; 5, 45–48; 6, 45–45; 7, 43–45; 8, 39–43; 9, 38–42; 10, 35. Hook blade thickness increasing from first hook (7) to 9th (17), and decreasing from 15 in 9–10 to 7–10 in basal hooks. Hook root length: 1, 38–48; 2, 40–50; 3, 50; 4, 50; 5, 48–53; 6, 48–53; 7, 45–53; 8, 50–55; 9, 45–53; 10, 45–53. Transitional hook blade length 35–38, roots 20–25 long. Remainder hook blade length 38–43, hook root processes 20–25 long. Proboscis receptacle 1480–1770 long. Eggs elongate-oval, without polar prolongation of fertilization membrane, 50– 53 (56.1) × 25–27. R e m a r k s. The species was reported from glossy ibis Plegadis falcinellus and blackcrowned night heron Nycticorax nycticorax in the vicinity of the Black Sea Reserve in Kherson Region (Lisitsyna, 1993, 2008). Later, a single specimen from Nycticorax nycticorax was assigned to C. amphibius (Kornyushin et al., 2004). Re-exami-nation of this specimen and its comparison with the original description of C. amphibius (Das, 1950) showed that the shape of the proboscis with the extension of the anterior part, the proboscis armament (more than 30 longitudinal rows of hooks vs 26–30 in C. amphibius), and the number of large hooks with developed roots in longitudinal rows (9 vs 5 in C. amphibius) do not correspond to C. amphibius. At the same time, the morphology of the specimen is fully consistent with the description of C. spinosus. The species was described from the birds of prey in North America. It is recorded from the birds of the genera Strix, Circus, Elanoides, Herodias in Europe, Asia and North. America. It is found in Ukraine in black-crownedon Nycticorax nycticorax 2, glossy ibis Plegadis falcinellus 2, common buzzard Buteo buteo 2, western marsh harrier Circus aeruginosus 2, common kestrel Falco tinnunculus 2 in Volyn Region (West Polissya), Odesa Region (Vylkove), Kyiv Region (Zazimye), Kherson Region (area Black Sea Reserve and Sofiyivka) (Khohlova, 1986 2 ; Lisitsyna, 1993, 2008; Kornyushin et al., 2004).Published as part of Lisitsyna, O. I. & Greben, O. B., 2015, Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species, pp. 195-210 in Vestnik Zoologii 49 (3) on pages 204-205, DOI: 10.1515/vzoo-2015-0022, http://zenodo.org/record/645232

    Centrorhynchus aluconis Luhe 1911

    No full text
    Centrorhynchus aluconis (Muller, 1780) Lühe, 1911 (fig. 1, A–E) Syn. Echinorhynchus aluconis Müller, 1780; E. otidis Schrank, 1788; E. inequalis Rudolphi, 1808; E. appendiculatus Westrumb, 1821; E. soricis Rudolphi, 1819; Centrorhynchus appendiculatus Westrumb, 1821; C. olssoni Lundström, 1942. G e n e r a l (8}, 10 {). Trunk elongate, almost cylindrical. Proboscis divided into 2 parts by constriction at level of receptacle attachment. Proboscis anterior part spatulate or spherical, proboscis posterior conical. Neck short. Proboscis with 28–34 longitudinal rows of 13–17 (16) hooks. First 3–5 (4) hooks large with posteriorly directed strong roots. Next 3–4 hooks transitional, with roots consisting of 2 antero–lateral alate processes, remaining hooks spiniform with anteriorly directed simple roots. Length of blade increasing from first to third, then gradually decreasing, blade of transitional hooks smallest. Roots increase from first to 4–5th, roots of transitional hooks smallest. Proboscis receptacle double– walled, attached in proboscis middle, forming constriction. Lemnisci sacciform, longer than proboscis receptacle. Gonopore subterminal in both sexes. M a l e s. Trunk 19.80–35.00 (22.56) mm long with maximum width in testis region 780–1080 (907). Proboscis 760–1020 (866.25) long with maximum width at anterior part 380–440 (402), anterior part of proboscis up to constriction 450–530 (483) long, width at constriction 201–380 (322). Proboscis with 28–32 (29.7) longitudinal rows of 13–17 (15.15) hooks. First 3–5 (4) hooks large with posteriorly directed strong roots. Hook blade length: 1, 31–55 (42.94); 2, 41–60 (52.47), 3, 45–58 (52.82); 4, 32–53 (44.6); 5, 25–40 (33). Hook blade thickness: 1, 7–13 (9.86); 2, 10–18 (14.8); 3, 18–25 (20.2); 4, 10–25 (19.2); 5, 8–13 (10.3). Hook root length: 1, 33–55 (50.73); 2, 53–63 (55.37); 3, 49–68 (63.93); 4, 37–73 (58.4); 5, 25–31 (26.89). Transitional hook blade length 25–40 (34.87), 8–10 (9) thick, hook root 20– 25 (23.5) long. Spiniform hook blade length 33–43 (38), hook root processes 20–25 (24.3) long. Proboscis receptacle 1150–1500 (1328) long, with maximum width 320–410 (376). Neck short, 50–130 (102) long. Lemnisci 1080–2430 (1868) long, sacciform, extend behind proboscis receptacle, but not up anterior testis. Testes in tandem slightly overlapping one another. First testis 925–1310 (1100) × 450–550 (486), second testis 850–1220 (1185) × 380–520 (486). Cement glands 6.2–10.57 (8.94) mm long. Säfftigen pouch 2.23–2.76 (2.50) mm long. Таблица 1. Материалы коллекции Acanthocephales рода Centrorhynchus F e m a l e s. Trunk 32.48–42.00 (35.70) mm long, with maximum width at anterior part 860–1800 (1186). Proboscis 670–900 (716) long with maximum width in anterior part 390–430 (371), anterior part of proboscis up to constriction 400–490 (455) long with wide at constriction 300–370 (337). Proboscis with 30–34 (32.28) longitudinal rows of 15–17 (16) hooks. First 3–5 (4) hooks large with posteriorly directed strong roots. Hook blade length: 1, 40–60 (47.33); 2, 50–58 (53); 3, 50–55 (52.63); 4, 30–54 (47); 5, 28–54 (38). Hook blade thickness: 1, 8–13 (11); 2, 13–18 (15.4); 3, 15–23 (19.9); 4, 20–24 (21.4); 5, 10–18 (11.7). Hook root length: 1, 35–50 (41.83); 2, 50–68 (56.71); 3, 55–70 (65.22); 4, 43–70 (62.66); 5, 25–37 (28). Transitional hook blade length 28–43 (35.16), 8–13 (10.6) thick, hook root 25–28 (26) long. Spiniform hook blade length 33–43 (38.7), hook root processes 20–25 (24.1) long. Proboscis receptacle 1115–1500 (1298) long with maximum width 320–440 (395). Neck short, 40–100 (68.75) long. Lemnisci 2370–2420 (2395) long. Reproductive tract 1.65–2.55 long, consist of vagina with two sphincters, uterus and uterine ball. Eggs elongate-oval, without polar prolongation of fertilization membrane, 56–65 (63.05) × 28–30 (29.66). Рис. 1. Centrorhynchus aluconis от Strix aluco: A — общий вид, {; B — хоботок, {; C — крючья продольного ряда, {; D — яйцо; E — терминальная часть половой системы самки. R e m a r k s. Proboscis of this species is armed with 30–34 longitudinal rows of hooks, 16–17 hooks in a row according to Petrochenko (1958) and Khokhlova (1986). Among them, the first 5–7 hooks are large, with well-developed roots. In the description of Dimitrova and Gibson (2005) which was based on the material from the Natural History Museum (London) from Strix aluco of the United Kingdom, 28–29 longitudinal rows of hooks were indicated, 14–15 hooks in a row, of which the first 4 hooks were large with developed roots. Our material is similar to the specimens described by Dimitrova and Gibson (2005). The species was described from birds of prey in Europe. It is recorded from birds of the genera Accipiter, Buteo, Strix, Otus, Circus, Haliaetus, Milvus in Europe and Asia. It is found in Ukraine in western marsh harrier Circus aeruginosus 1, common kestrel Falco tinnunculus 1, brown owl Strix aluco 2, ural owl S. uralensis 2 in Zakarpattya Region (Rahiv District — Luch, Lazeschina, V. Bychkov, Ch. Tysa, Tyachiv District — Kireshi), IvanoFrankivsk Region (Nadvornyansk District, Losva), Volyn Region (Lyubeshyv District, Nevir), Dnipropetrovsk Region (Pankovka) (Ivanitzky, 1940; Khohlova, 1986; Lisitsyna, 1993, 2008, 2014).Published as part of Lisitsyna, O. I. & Greben, O. B., 2015, Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species, pp. 195-210 in Vestnik Zoologii 49 (3) on pages 196-199, DOI: 10.1515/vzoo-2015-0022, http://zenodo.org/record/645232
    corecore