1,720,961 research outputs found
Fig. 1 in Review Of The Helminths Parasitic In Rare Aquatic Birds In Ukraine
No full textFig. 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
Finding Of Two Species From The Tribe Synhimantea (Nematoda, Acuariidae) In The Kyiv Zoological Park
No full textSyrota, Ya. Yu., Kharchenko, V. O., Lyaskivskiy, V. N., Kobylinsky, V. V., Vasylkivska, I. B. (2015): Finding Of Two Species From The Tribe Synhimantea (Nematoda, Acuariidae) In The Kyiv Zoological Park. Vestnik Zoologii 49 (6): 483-488, DOI: 10.1515/vzoo-2015-0059, URL: http://dx.doi.org/10.1515/vzoo-2015-005
First Record Of Dicheilonema Ciconiae (Nematoda, Diplotriaenoidea) From Ciconia Nigra (Aves, Ciconiidae) In Ukraine
No full textSyrota, Ya. Yu., Kuzmin, Yu. I., Lyaskivskiy, V. N., Kobylinsky, V. V., Vasylkivska, I. B. (2016): First Record Of Dicheilonema Ciconiae (Nematoda, Diplotriaenoidea) From Ciconia Nigra (Aves, Ciconiidae) In Ukraine. Vestnik Zoologii 50 (4): 379-382, DOI: 10.1515/vzoo-2016-0044, URL: http://dx.doi.org/10.1515/vzoo-2016-004
Fig. 2. Cardiofilaria pavlovskyi. A in New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine
No full textFig. 2. Cardiofilaria pavlovskyi. A — anterior part of body, lateral view; B — apical view of anterior extremity, optical section at level of cuticular ring; C — posterior part of body, lateral view; D — position of apical structures (papillae and amphids), en face view. Scale bars 50 µm.Published as part of Syrota, Ya. Yu., Korol, E. M. & Kuzmin, Yu. I., 2020, New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine, pp. 11-16 in Zoodiversity 54 (1) on page 14, DOI: 10.15407/zoo2020.01.011, http://zenodo.org/record/637753
Brachylaima fuscata
No full textBrachylaima fuscata (Rudolphi, 1819) Six specimens were collected from the intestine of one bird. L o c a l i t y: Nizhyn District (Chernihiv Region). Description (based on 4 mature specimens). Body elongated (fig. 1, A), with maximum width 476–542 anterior to ventral sucker; body length 2,487 –2,849. Oral sucker larger than ventral sucker. Oral sucker 241–288×211–282. Ventral sucker 150–182×145–180. Distance from anterior end of body to centre of ventral sucker 890–960. Pharynx well-developed, round, 102–174×123–168. Gonads in posterior quarter of body. Ovary between testes. Anterior testis 160–272×167–261, posterior testis 164–269×122–245. Ovary 131–162×136– 171. Vitellarium distributed in two lateral fields, extending from posterior extremity of ventral sucker to level of anterior edge of anterior testis. Eggs oval, numerous, 28–35× 16– 18 in size.Published as part of Syrota, Ya. Yu., Korol, E. M. & Kuzmin, Yu. I., 2020, New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine, pp. 11-16 in Zoodiversity 54 (1) on page 12, DOI: 10.15407/zoo2020.01.011, http://zenodo.org/record/637753
Cardiofilaria pavlovskyi Strom 1937
No full textCardiofilaria pavlovskyi Ström, 1937 Two specimens (males) were collected from the air sacs of two birds. L o c a l i t y: Kyiv Region, near Kyiv. Description of 2 males. Nematodes of small size. Body cylindrical, slightly narrowing to anterior and posterior extremities (fig. 2, A), 6,431 –7,485 long. Body width 110–115 at level of posterior edge of oesophagus. Maximum body width 143–165 near middle of body. Cuticle smooth. Mouth small, dorso-ventrally elongated in studied specimens. On anterior extremity, 4 pairs of papillae in two circles and lateral amphids (fig. 2, B, D). Distinct cuticular ring surrounding buccal cavity. Oesophagus divided into muscular and glandular parts, border between parts indistinct. Muscular part of oesophagus 48–51 long, glandular part 355–377 long. Nerve ring in first quarter of glandular part of oesophagus, 127–136 from anterior extremity. Spicules subequal and slightly dissimilar (fig. 2, C). Left spicule 75–81 long, right spicule 60–65 long. Tail short and blunt, 69–76 long.Published as part of Syrota, Ya. Yu., Korol, E. M. & Kuzmin, Yu. I., 2020, New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine, pp. 11-16 in Zoodiversity 54 (1) on page 14, DOI: 10.15407/zoo2020.01.011, http://zenodo.org/record/637753
Prosthogonimus ovatus
No full textProsthogonimus ovatus (Rudolphi, 1803) One adult specimen was collected from the bursa of Fabricius of one bird. L o c a l i t y: Horodnia District (Chernihiv Region). Description. Body pear-shaped (fig. 1, B), 1,899 long; its maximum width 735 in posterior quarter. Oral and ventral suckers subspherical. Oral sucker 130×136. Ventral sucker 250×263. Distance from anterior end of body to centre of ventral sucker 870. Pharynx well developed, round, 106×88. Testes elongate-oval. Right testis 283×220. Left testis 260×180. Cirrus-sac 350×80. Ovary 165×313. Ventral sucker totally covering ovary. Anterior border of uteri loops distal to intestine bifurcation, posterior border of uteri loops almost at end of body. Anterior edge of vitellarium at level of anterior border of uteri loops. Branches of vitellarium different in size. One branch extending to middle of testes. Another branch extending to end of testes. Eggs oval, numerous, 25–28× 13–14 in size.Published as part of Syrota, Ya. Yu., Korol, E. M. & Kuzmin, Yu. I., 2020, New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine, pp. 11-16 in Zoodiversity 54 (1) on page 13, DOI: 10.15407/zoo2020.01.011, http://zenodo.org/record/637753
Prosthogonimus cuneatus
No full textProsthogonimus cuneatus (Rudolphi, 1809) Two specimens, one adult and one immature, were collected from the bursa of Fabricius of one bird. L o c a l i t y: Horodnia District (Chernihiv Region). Description of an adult specimen. Body oval (fig. 1, C), 2,072 long, with maximum width 752 atlevel of ovary. Oral sucker subspherical, 191×212. Ventral sucker 351×360. Distance from anterior end of body to centre of ventral sucker 930. Pharynx well developed, oval 105×96. Oesophagus short, 120–190 long. Testes elongate-oval. Size of right testis 200×96, size of left testis 198×90. Cirrus sac 220×44. Ovary 220×300. Ventral sucker slightly overlapping ovary anteriorly. Loops of uteri extending from posterior edge of ventral sucker to posterior end of body. Vitellarium at lateral margins of body. Anterior border of vitellarium at level of posterior edge of ventral sucker, posterior border of vitellarium posterior to posterior edge of testes. Eggs oval, numerous, 23–25× 14–15 in size. Description of an immature specimen. Body pear-shaped, 1,425 long, with maximum width 580 at level of testes. Size of oral sucker 168×160, size of ventral sucker 265×260. Pharynx 55×35. Distance from anterior end of body to centre of ventral sucker 660. Testes round. Right testis 148×150, left testis 150×153. Ventral sucker partly covering anterior part of ovary. Ovary 147×178. Vitellarium undeveloped.Published as part of Syrota, Ya. Yu., Korol, E. M. & Kuzmin, Yu. I., 2020, New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine, pp. 11-16 in Zoodiversity 54 (1) on pages 12-13, DOI: 10.15407/zoo2020.01.011, http://zenodo.org/record/637753
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
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