1,721,025 research outputs found
Data used in the article: "Phenotypic plasticity as a function of genetic polymorphism: thermal dominance reversal in Drosophila species with contrasting melanism"
No full textThis archive contains the data used in the following article: "Phenotypic plasticity as a function of genetic polymorphism: thermal dominance reversal in Drosophila species with contrasting melanism". It is composed of 15 data text files, 16 text files describing commands and statistical analyses in R, 4 perl script text files, 81 photo files in jpg format, and 1 readme text file describing the content of the archive
Fig. 9 in Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar
No full textFig. 9. Terminalia of the 'D. vulcana species complex'. A, C, E. D. vulcana Graber, 1957 (MNHN). A, C. ♂. E. ♀. B, D, F. D. mylenae David & Yassin sp. nov. (MNHN). B, D. ♂. F. ♀. Scale bars: A–B = 50 µm; D–F = 100 µm.Published as part of Yassin, Amir, Suwalski, Arnaud & Raveloson Ravaomanarivo, Lala H., 2019, Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar, pp. 1-26 in European Journal of Taxonomy 532 on page 19, DOI: 10.5852/ejt.2019.532, http://zenodo.org/record/325156
Fig. 8. Adult habitus. A–B. D. vulcana Graber, 1957 in Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar
No full textFig. 8. Adult habitus. A–B. D. vulcana Graber, 1957 (MNHN). A. ♂. B. ♀. C–D. D. mylenae David & Yassin sp. nov. (MNHN). C. ♂. D. ♀. Scale bar = 1 mm.Published as part of Yassin, Amir, Suwalski, Arnaud & Raveloson Ravaomanarivo, Lala H., 2019, Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar, pp. 1-26 in European Journal of Taxonomy 532 on page 18, DOI: 10.5852/ejt.2019.532, http://zenodo.org/record/325156
Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar
No full textYassin, Amir, Suwalski, Arnaud, Raveloson Ravaomanarivo, Lala H. (2019): Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar. European Journal of Taxonomy 532: 1-26, DOI: https://doi.org/10.5852/ejt.2019.53
FIGURE 9. Barcode Gap analysis comparing D. sturtevanti GenBank sequences and D in Integrative taxonomy and a new species description in the sturtevanti subgroup of the Drosophila saltans group (Diptera: Drosophilidae)
No full textFIGURE 9. Barcode Gap analysis comparing D. sturtevanti GenBank sequences and D. lehrmanae sp. nov.Published as part of Madi-Ravazzi, Lilian, Segala, Luís Fernando, Roman, Bruna Emilia, Alevi, Kaio Cesar Chaboli, Prediger, Carolina, Yassin, Amir, Hua-Van, Aurélie & Miller, Wolfgang J., 2021, Integrative taxonomy and a new species description in the sturtevanti subgroup of the Drosophila saltans group (Diptera: Drosophilidae), pp. 269-292 in Zootaxa 4980 (2) on page 280, DOI: 10.11646/zootaxa.4980.2.3, http://zenodo.org/record/488902
Fig. 2 in Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar
No full textFig. 2. Comparison of Bayesian phylogenies of the 'D. seguyi species subgroup' Yassin, 2018 inferred from mitochondrial COI (left) and nuclear Amyrel (right) genes. Nodes supported by>95% posterior probability (pp) are labeled with black circles. An asterisk refers to species sequenced here, whereas two asterisks refer to the sequence of D. vulcana Graber, 1957 of Da Lage et al. (2007), which turned out to belong to D. seguyi Smart, 1945 from Kenya (see the text). Note the discrepancy in position of different geographical strains of D. bakoue Tsacas & Lachaise, 1974 (in red) between the two genes. Species belonging to 'D. bocqueti species complex' Tsacas & Lachaise, 1974, 'D. bakoue species complex' Rafael, 1984, 'D. nikananu species complex' Tsacas & Chassagnard, 1992, and 'D. megapyga species complex' Lachaise & Tsacas, 2001 are highlighted in orange, green, yellow and red, respectively.Published as part of Yassin, Amir, Suwalski, Arnaud & Raveloson Ravaomanarivo, Lala H., 2019, Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar, pp. 1-26 in European Journal of Taxonomy 532 on page 6, DOI: 10.5852/ejt.2019.532, http://zenodo.org/record/325156
Drosophila tsacasi Bock & Wheeler 1972
No full text‘ D. tsacasi species complex’ new complex Figs 1–2, 3B Diagnosis Male abdominal tergites T2–T5 yellowish with usually distinct black stripes, T6 usually black; cercal ventral lobe (secondary clasper) fused to cerci with four or five very large curved black medial teeth arising from long dark chitinous roots on the internal margin; surstylus lobate with a lateral row of long, irregularly spaced prensisetae on the outer margin and a cluster of prensisetae on the inner margins (no medial prensisetae), the innermost one significantly long (Fig. 3B). Female abdominal tergites lighter than male’s or concolorously light. Remarks This complex contains two described species, D. tsacasi and D. seguyiana, and two putatively new species, D. aff. tsacasi (see above under D. curta) and D. aff. bakoue (see above under D. bakoue). The molecular, morphological and reproductive isolation between these species requires further investigation. Taxon content D. tsacasi Bock & Wheeler, 1972. D. seguyiana Chassagnard & Tsacas, 1997.Published as part of Yassin, Amir, Suwalski, Arnaud & Raveloson Ravaomanarivo, Lala H., 2019, Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar, pp. 1-26 in European Journal of Taxonomy 532 on page 17, DOI: 10.5852/ejt.2019.532, http://zenodo.org/record/325156
Drosophila vulcana Yassin, Suwalski & Ravaomanarivo, 2019, sp. nov.
No full text‘ D. vulcana species complex’ new complex Figs 1–2, 3C, 8 A–D, 9A–F Diagnosis Male abdominal tergites yellow, T2–T4 with broad brown or black stripes, T5 and T6 with a thin black stripe expanding on the middle and fainting towards the margin (Fig. 8A); cercal ventral lobe (secondary clasper) partially separated from cerci with two or three very large curved black medial teeth on the internal margin; surstylus with a lateral row of strong, short prensisetae on the outer and inner margins (no medial prensisetae), the innermost one significantly long; hypandrial median process tapering (Fig. 3C); aedeagus hirsute with cuticular scales; inner paraphyses as long as aedeagus, with finely serrated margins (Fig. 9 A–D). Female abdominal tergites darker than male’s (Fig. 8B). Remarks Chassagnard et al. (1997) mentioned a species, named ‘ Drosophila (Sophophora) sp. C’, belonging to the ‘ D. montium species group’ in Malawi with males having diffuse brown T2–T4 and pale T5 and T6. This species either belongs to one of the two species of this complex or represents a new species belonging to the complex. Elucidating its identity needs further investigation. Taxon content D. vulcana Graber, 1957. D. seguyiana sp. nov.Published as part of Yassin, Amir, Suwalski, Arnaud & Raveloson Ravaomanarivo, Lala H., 2019, Resolving the synonymy and polyphyly of the ' Drosophila bakoue species complex' (Diptera: Drosophilidae: ' D. montium species group') with descriptions of two new species from Madagascar, pp. 1-26 in European Journal of Taxonomy 532 on page 18, DOI: 10.5852/ejt.2019.532, http://zenodo.org/record/325156
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
- …
