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Two new Gordionus species (Nematomorpha: Gordiida) from the southern Rocky Mountains (USA)
No full textBegay, Alyssa C., Schmidt-Rhaesa, Andreas, Bolek, Matthew G., Hanelt, Ben (2012): Two new Gordionus species (Nematomorpha: Gordiida) from the southern Rocky Mountains (USA). Zootaxa 3406: 30-38, DOI: 10.5281/zenodo.28186
Novel techniques for biodiversity studies of gordiids and description of a new species of Chordodes (Gordiida, Nematomorpha) from Kenya, Africa
No full textBolek, Matthew G., Szmygiel, Cleo, Kubat, Austin, Schmidt-Rhaesa, Andreas, Hanelt, Ben (2013): Novel techniques for biodiversity studies of gordiids and description of a new species of Chordodes (Gordiida, Nematomorpha) from Kenya, Africa. Zootaxa 3717 (1): 23-38, DOI: http://dx.doi.org/10.11646/zootaxa.3717.1.
<p><strong>Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha)</strong></p>
No full textSzmygiel, Cleo, Schmidt-Rhaesa, Andreas, Hanelt, Ben, Bolek, Matthew G. (2014): Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha). Zootaxa 3768 (2): 101-118, DOI: http://dx.doi.org/10.11646/zootaxa.3768.2.
Using Gordiid cysts to discover the hidden diversity, potential distribution, and new species of Gordiids (Phylum Nematomorpha)
No full textHarkins, Cleo, Shannon, Ryan, Papeş, Monica, Schmidt-Rhaesa, Andreas, Hanelt, Ben, Bolek, Matthew G. (2016): Using Gordiid cysts to discover the hidden diversity, potential distribution, and new species of Gordiids (Phylum Nematomorpha). Zootaxa 4088 (4): 515-530, DOI: http://doi.org/10.11646/zootaxa.4088.4.
FIGURE 1 in Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha)
No full textFIGURE 1. Egg strings of four genera of gordiids. (A) Egg strings of G. cf. robustus #1. Scale bar = 1.9 mm. (B) Posterior end of female P. obamai in the process of depositing an egg string. Scale bar = 625 µm. (C) Female P.varius (brown) in the process of depositing an egg string (white). Scale bar = 1.2 mm. (D) Female C. kenyaensis (brown) depositing an egg string (white) in a zig-zag pattern on a branch. Scale bar = 3.1 mm. (E) Egg string of C. morgani deposited in a zig-zag pattern on a branch. Scale bar = 5.8 mm. (F) Egg string of N. occidentalis deposited in a zig-zag pattern on an air-stone. Scale bar = 1.9 mm.Published as part of Szmygiel, Cleo, Schmidt-Rhaesa, Andreas, Hanelt, Ben & Bolek, Matthew G., 2014, Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha), pp. 101-118 in Zootaxa 3768 (2) on page 106, DOI: 10.11646/zootaxa.3768.2.1, http://zenodo.org/record/490952
FIGURE 4. Gordionus bilaus n in Two new Gordionus species (Nematomorpha: Gordiida) from the southern Rocky Mountains (USA)
No full textFIGURE 4. Gordionus bilaus n. sp. cuticle of female. (A and B) Cuticle contains both polygonal and more roundish areoles. Note the indistinct interareolar furrows giving neighboring areoles a fused appearance end. (C) Cuticle near the anterior end showing numerous tubercles. Scale bars = 10 µm.Published as part of Begay, Alyssa C., Schmidt-Rhaesa, Andreas, Bolek, Matthew G. & Hanelt, Ben, 2012, Two new Gordionus species (Nematomorpha: Gordiida) from the southern Rocky Mountains (USA), pp. 30-38 in Zootaxa 3406 on page 35, DOI: 10.5281/zenodo.28186
FIGURE 2 in Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha)
No full textFIGURE 2. Larval characteristics of the genus Gordius. (A) DIC photomicrograph of a live G. cf. robustus #2 larva. Note the stylets (black arrow) and subdivided pseudo intestine (white arrow). Scale bar = 18.8 µm. (B) DIC photomicrograph of anterior end of G. cf. robustus #2 larva. Note the everted proboscis (arrow). Scale bar = 8.0 µm. (C) SEM photomicrograph of an entire G. cf. robustus #1 larva. Note the distinct preseptum (Pre) and very long postseptum (Pos). Scale bar = 11.0 µm. (D) SEM photomicrograph of the preseptum of a G. cf. robustus #1 larva. Note the inner row of hooks (IH), middle row of hooks (MH), and outer row of hooks (OH) containing two ventral outer hooks (VOH). Scale bar = 2.0 µm. (E) SEM photomicrograph of the preseptum of G. cf. robustus # 1 larva. Note the orientation of the proboscis (P) to the ventral hooks (VOH). Scale bar =3.0 µm. (F) SEM photomicrograph of the proboscis (P) of a G. cf. robustus #1 larva. Note the arrangement of the nine right lateral spines (RLS), and seven dorsal spines (DS). Scale bar = 1.0 µm. (G) SEM photomicrograph of the posterior end of a G. cf. robustus #2 larva. Note single posterior spine (arrow). Scale bar = 3.0 µm.Published as part of Szmygiel, Cleo, Schmidt-Rhaesa, Andreas, Hanelt, Ben & Bolek, Matthew G., 2014, Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha), pp. 101-118 in Zootaxa 3768 (2) on page 107, DOI: 10.11646/zootaxa.3768.2.1, http://zenodo.org/record/490952
FIGURE 5 in Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha)
No full textFIGURE 5. Larval characteristics of Neochordodes occidentalis. (A) DIC photomicrograph of a live larva. Note the distinct preseptum (Pre) and postseptum (Pos). Scale bar = 13.0 µm. (B) DIC photomicrograph of a live larva. Note the three stylets (large black arrow), the v shaped pseudointestine (small black arrow) and the pseudointestine gland opening (white arrow). Scale bar = 13.0 µm. (C) DIC photomicrograph of the postseptum (lateral view). Note the complex nature of the v shaped pseudointestine containing two preintestinal glands (black arrows) above the two arms of the v-shaped pseudointestine. Scale bar = 13.0 µm. (D and E) Light photomicrograph of an entire larva in the process of empting the contents of its pseudointestine (black arrow). Scale bars = 13.5 µm. (F) SEM photomicrograph of an entire larva (dorsal view). Note the inner hooks (IH), median hooks (MH) and outer hooks (OH) on the preseptum. Scale bar = 7.0 µm. (G) SEM photomicrograph of an entire larva (ventral view). Note the orientation of the proboscis (P) to the ventral outer hooks (VOH) and two anterior spines (AS), two posterior spines (PS) and pseudointestine gland opening (PSGO). Scale bar = 4.5 µm. (H) SEM photomicrograph of the ventral side of the proboscis (P). Note the arrangement of the five ventral spines (VS) and the presence of left lateral spines (LLS). Scale bar = 1.0 µm.Published as part of Szmygiel, Cleo, Schmidt-Rhaesa, Andreas, Hanelt, Ben & Bolek, Matthew G., 2014, Comparative descriptions of non-adult stages of four genera of Gordiids (Phylum: Nematomorpha), pp. 101-118 in Zootaxa 3768 (2) on page 110, DOI: 10.11646/zootaxa.3768.2.1, http://zenodo.org/record/490952
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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