1,721,012 research outputs found
FIGURE 8 in A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano
No full textFIGURE 8. Male genitalia internal structure in Archaebranchinecta. A, A. pollicifera Pe-30, lateral view. B, A. aimara sp. nov. Bo-52, ventrolateral view. Scale bars: A and B: 500 µm.Published as part of Cohen, Rosa Graciela, Marinone, María Cristina & Adamowicz, Sarah J., 2019, A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano, pp. 55-83 in Zootaxa 4683 (1) on page 71, DOI: 10.11646/zootaxa.4683.1.3, http://zenodo.org/record/347466
Figure 3 in Prospects for using DNA barcoding to identify spiders in species-rich genera
No full textFigure 3. Bar graph with standard errors showing the differences in mean (in black) and maximum (in grey) intraspecific divergence as well as nearest-neighbor distance (in white) between the three geographical distribution categories.Published as part of Blagoev, Gergin, Hebert, Paul, Adamowicz, Sarah & Robinson, Emily, 2009, Prospects for using DNA barcoding to identify spiders in species-rich genera, pp. 27-46 in ZooKeys 16 (16) on page 36, DOI: 10.3897/zookeys.16.239, http://zenodo.org/record/57647
FIGURE 3 in A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano
No full textFIGURE 3. Drawing of male head of Archaebranchinecta pollicifera Pe-22, counter-clockwise rotation. A, anterior view. B, anteromedial view. C, lateral view. Scale bar: 500 µm.Published as part of Cohen, Rosa Graciela, Marinone, María Cristina & Adamowicz, Sarah J., 2019, A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano, pp. 55-83 in Zootaxa 4683 (1) on page 64, DOI: 10.11646/zootaxa.4683.1.3, http://zenodo.org/record/347466
Figure 4 in Species diversity and endemism in the Daphnia of Argentina: a genetic investigation
No full textFigure 4. Collection sites for Argentine populations belonging to the subgenus Hyalodaphnia. Photographs are included to demonstrate the several head morphologies encountered. The morphological, not genetic, forms encountered at each site are indicated on the map.Published as part of Adamowicz, Sarah J., Hebert, Paul D. N. & Marinone, María Cristina, 2004, Species diversity and endemism in the Daphnia of Argentina: a genetic investigation, pp. 171-205 in Zoological Journal of the Linnean Society 140 (2) on page 181, DOI: 10.1111/j.1096-3642.2003.00089.x, http://zenodo.org/record/543913
FIGURE 8 in Three new cryptic species of the freshwater zooplankton genus Holopedium (Crustacea: Branchiopoda: Ctenopoda), revealed by genetic methods
No full textFIGURE 8. Representative photomicrographs of Holopedium amazonicum. (a) Lateral view of ovigerous female with jelly coat removed. (b) Lateral view of brooding female with jelly coat removed. (c) Lateral view of female head. (d) Partial lateral view of female. (e) Lateral view of female head. (f) Lateral view of female postabdomen. Lago Coari, Amazonas, May 24, 1996. (g) Lateral view of brood pouch margin and eggs. (h) Lateral view of ventral carapace margin. (a–e, g–h) from Lago Caju, Amazonas, September 24, 1998.Published as part of Rowe, Chad L., Adamowicz, Sarah J. & Hebert, Paul D. N., 2007, Three new cryptic species of the freshwater zooplankton genus Holopedium (Crustacea: Branchiopoda: Ctenopoda), revealed by genetic methods, pp. 1-49 in Zootaxa 1656 on page 31, DOI: 10.5281/zenodo.17985
FIGURE 4 in A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano
No full textFIGURE 4. Archaebranchinecta pollicifera male, processes of basal antennomere of second antenna. A, Pe-29, posterior view. B, Pe-29, detail of ornamentation of the more prominent posteromedial tip of the small process. C, Pe-22, detail of small process with its medial crest and posteromedial cordiform tip, anteromedial view. D, Pe-22, detail of ornamentation with columnar grooved spines of cordiform tip of small process. Scale bars: A: 250 µm; B: 20 µm; C: 100 µm; D: 50 µm.Published as part of Cohen, Rosa Graciela, Marinone, María Cristina & Adamowicz, Sarah J., 2019, A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano, pp. 55-83 in Zootaxa 4683 (1) on page 65, DOI: 10.11646/zootaxa.4683.1.3, http://zenodo.org/record/347466
FIGURE 1 in A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano
No full textFIGURE 1. Distribution of Archaebranchinecta in the South American Altiplano. Grey circles: new sites for A. aimara sp. nov.; white circle with a black dot: type locality for A. aimara sp. nov.(Bo-44); black star: new site near Tiwanaku for A. aimara sp. nov. (Bo-18); black squares: new sites for A. pollicifera. Published localities: white square: type locality for A. pollicifera in Capachica Peninsula; white circle: paratype locality for A. pollicifera in Cochabamba by Harding (1940), which most probably belongs to A. aimara sp. nov.; crossed white circle: redescription site for A. pollicifera in Sajama National Park by Rogers & Coronel (2011), herein assigned to A. aimara sp. nov.; and black triangles: first report sites for Archaebranchinecta in northern Argentina.Published as part of Cohen, Rosa Graciela, Marinone, María Cristina & Adamowicz, Sarah J., 2019, A new species of Archaebranchinecta (Anostraca: Branchinectidae) from the South American Altiplano, pp. 55-83 in Zootaxa 4683 (1) on page 59, DOI: 10.11646/zootaxa.4683.1.3, http://zenodo.org/record/347466
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
Consequences of Insect Flight Loss for Molecular Evolutionary Rates and Diversification
No full textThis thesis investigates the molecular evolutionary and macroevolutionary consequences of flight loss in insects. Chapter 2 tests the hypothesis that flightless groups have smaller effective population sizes than related flighted groups, expected to result in a consistent pattern of increased non-synonymous to synonymous ratios in flightless lineages due to the greater effect of genetic drift in smaller populations. Chapter 3 tests the hypothesis that reduced dispersal and species-level traits such as range size associated with flightlessness increase extinction rates, which over the long term will counteract increased speciation rates in flightless lineages, leading to lower net diversification. The wide-spread loss of flight in insects has led to increased molecular evolutionary rates and is associated with decreased long-term net diversification. I demonstrate that the fundamental trait of dispersal ability has shaped two forms of diversity—molecular and species—in the largest group of animals, and that microevolutionary and macroevolutionary patterns do not necessarily mirror each other.Natural Sciences and Engineering Research Council of CanadaOntario Graduate Scholarshi
- …
