11,733 research outputs found
Complete mitogenome and phylogenetic significance of Metoecus javanus (Pic, 1913) (Coleoptera: Ripiphoridae) from Southwest China, with notes on morphological traits of adult and immature stages
No full textLi, Jun, Zhou, Zheng, Mao, Chuyang, Pan, Zhao, Yao, Yuhao, He, Jinwu, Lin, Yan, Dong, Zhiwei, Liu, Guichun, Zhao, Ruoping, Wang, Wen, Li, Xueyan (2022): Complete mitogenome and phylogenetic significance of Metoecus javanus (Pic, 1913) (Coleoptera: Ripiphoridae) from Southwest China, with notes on morphological traits of adult and immature stages. Zootaxa 5205 (3): 231-248, DOI: https://doi.org/10.11646/zootaxa.5205.3.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
FIGURES 70–75. Lamprigera minor. 70–72 in Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species
No full textFIGURES 70–75. Lamprigera minor. 70–72 Habitus of male adult. 70 Dorsal view; 71 Ventral view; 72 Pronotum. 73–75 Male genitalia. 73 Dorsal view; 74 Ventral view; 75 Lateral view. Scale bars: 5 mm (70–72), 0.5 mm (73–75).Published as part of Dong, Zhiwei, Yiu, Vor, Liu, Guichun, He, Jinwu, Zhao, Ruoping, Peng, Yanqiong & Li, Xueyan, 2021, Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species, pp. 441-468 in Zootaxa 4950 (3) on page 458, DOI: 10.11646/zootaxa.4950.3.2, http://zenodo.org/record/464996
FIGURE 8. Male genitalia. A–C Tergite IX, IX in Complete mitogenome and phylogenetic significance of Metoecus javanus (Pic, 1913) (Coleoptera: Ripiphoridae) from Southwest China, with notes on morphological traits of adult and immature stages
No full textFIGURE 8. Male genitalia. A–C Tergite IX, IX (T9, T10) and sternite IX (S9) of male adult (A left view; B ventral view; C dorsal view). D–G Aedeagus (D dorsal view; E ventral view; F left view; G right view). H Median lobe (left view). I Aedeagus, separated (left on dorsal view) J–M Phallobase and parameres (J dorsal view; K ventral view; L left view; M right view) (Scale bar: A–G, H–M, 1 mm).Published as part of Li, Jun, Zhou, Zheng, Mao, Chuyang, Pan, Zhao, Yao, Yuhao, He, Jinwu, Lin, Yan, Dong, Zhiwei, Liu, Guichun, Zhao, Ruoping, Wang, Wen & Li, Xueyan, 2022, Complete mitogenome and phylogenetic significance of Metoecus javanus (Pic, 1913) (Coleoptera: Ripiphoridae) from Southwest China, with notes on morphological traits of adult and immature stages, pp. 231-248 in Zootaxa 5205 (3) on page 242, DOI: 10.11646/zootaxa.5205.3.3, http://zenodo.org/record/730596
FIGURES 94–102. Lamprigera yunnana. 94–96 in Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species
No full textFIGURES 94–102. Lamprigera yunnana. 94–96 Habitus of male adult. 94 Dorsal view of male; 95 Ventral view of male; 96 Pronotum of male. 97–99 Male genitalia: 97 Dorsal view; 98 Ventral view; 99 Lateral view. 100 Bioluminescence of female adult. 101 Dorsal view of female adult. 102 Larva of the last instar. Scale bars: 5 mm (94–96, 101–102), 0.5 mm (97–99).Published as part of Dong, Zhiwei, Yiu, Vor, Liu, Guichun, He, Jinwu, Zhao, Ruoping, Peng, Yanqiong & Li, Xueyan, 2021, Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species, pp. 441-468 in Zootaxa 4950 (3) on page 464, DOI: 10.11646/zootaxa.4950.3.2, http://zenodo.org/record/464996
Venom gland transcriptomes of two elapid snakes (<it>Bungarus multicinctus </it>and <it>Naja atra</it>) and evolution of toxin genes
No full textAbstract Background Kraits (genus Bungarus) and cobras (genus Naja) are two representative toxic genera of elapids in the old world. Although they are closely related genera and both of their venoms are very toxic, the compositions of their venoms are very different. To unveil their detailed venoms and their evolutionary patterns, we constructed venom gland cDNA libraries and genomic bacterial artificial chromosome (BAC) libraries for Bungarus multicinctus and Naja atra, respectively. We sequenced about 1500 cDNA clones for each of the venom cDNA libraries and screened BAC libraries of the two snakes by blot analysis using four kinds of toxin probes; i.e., three-finger toxin (3FTx), phospholipase A2 (PLA2), kunitz-type protease inhibitor (Kunitz), and natriuretic peptide (NP). Results In total, 1092 valid expressed sequences tags (ESTs) for B. multicinctus and 1166 ESTs for N. atra were generated. About 70% of these ESTs can be annotated as snake toxin transcripts. 3FTx (64.5%) and β bungarotoxin (25.1%) comprise the main toxin classes in B. multicinctus, while 3FTx (95.8%) is the dominant toxin in N. atra. We also observed several less abundant venom families in B. multicinctus and N. atra, such as PLA2, C-type lectins, and Kunitz. Peculiarly a cluster of NP precursors with tandem NPs was detected in B. multicinctus. A total of 71 positive toxin BAC clones in B. multicinctus and N. atra were identified using four kinds of toxin probes (3FTx, PLA2, Kunitz, and NP), among which 39 3FTx-postive BACs were sequenced to reveal gene structures of 3FTx toxin genes. Conclusions Based on the toxin ESTs and 3FTx gene sequences, the major components of B. multicinctus venom transcriptome are neurotoxins, including long chain alpha neurotoxins (α-ntx) and the recently originated β bungarotoxin, whereas the N. atra venom transcriptome mainly contains 3FTxs with cytotoxicity and neurotoxicity (short chain α-ntx). The data also revealed that tandem duplications contributed the most to the expansion of toxin multigene families. Analysis of nonsynonymous to synonymous nucleotide substitution rate ratios (dN/dS) indicates that not only multigene toxin families but also other less abundant toxins might have been under rapid diversifying evolution.</p
Raw data of Zhao et al., 2022, Geoderma
No full textRaw data associated with Zhao et al., 2022, Geoderma. Any use of the data set should be approved by the corresponding author Kai Yue at "[email protected]".</p
Lamprigera luquanensis Dong & Yiu & Liu & He & Zhao & Peng & Li 2021, sp. nov.
No full textLamprigera luquanensis Dong & Li, sp. nov. Figs 58–63 Type locality. Dazhichang, Xueshan Township, Luquan County, Kunming City, Yunnan, China. Type material. Holotype: ♂, Dazhichang, Xueshan Township, Luquan County, Kunming City, 23.IX.2006 leg. Zi-Chao Liu (KIZ). Paratypes, three ♂ same data as holotype (KIZ). Additional material examined. Four ♂, same data as holotype, partly damaged, one of them used for genomic DNA extraction (Lg2). Three larvae, Yunzhong Lake, Jiugong Mountain, Tongshan County, Hubei, China, 3.VIII.2016, leg. Li-Xin Jiang (Lg20). Diagnosis. This species has translucent edges at its anterior and laterally posterolateral sides and two expanded dark brown areas at the two flanks of semi-elliptical black central disc. Its medial lobe shows an obvious constriction near apical 1/6 and the two parameres a little flatter than those of L. alticola (Figs 61–63). Description. Male (Figs 58–63). Body oblong. BL: 16.7–18.5 mm; BW: 6.5–7.9 mm; BW/BL 0.39–0.43. Coloration (Figs 58–60 ): head black; pronotal disc black and its two flanks light brown, anterior edge and posterolateral sides translucent (Fig. 60); prosternum and mesosternum black with pale yellow margin; scutellum pale brown; elytra black with light brown posterior edge; thorax pale brown; legs with coxa of femurs pale brown, tibiae and tarsi black; ventrites I–V black, ventrites VI–VII light brown. Head. Large because of big compound eyes, PW/GHW = 1.83–1.90; compound eyes kidney-shaped in lateral view and almost contiguous ventrally, interspace between eyes concave. Antennae clavate, short, only slightly longer than the diameter of a compound eye, slightly exceeding the frontal edge of pronotum in transverse view, thickly hirsute, first antennomere cylindrical and as long as second, second narrower, 3–10 segments triangular, last antennomere bifurcate apically. Mandibles curved, slender and sharply pointed; maxillary palp 5–segmented, apical segment circular; labial pointed bi-segmented. Thorax. Pronotum (Fig. 60) semi-elliptical (PW/PL = 1.69–1.90), surface clad with short, yellow-brown setae; widest at base; posterior margin flat; having translucent edge and black central disc, central disc convex. Elytra oblong, hairless. Abdomen. Abdomen surface clad with short setae. Pygidium slightly concave in the middle of posterior edge. Ventrite VII semi-circular. Male genitalia (Figs 61–63). Aedeagus sheath 1.53 mm long, covering dorsal side of male genitalia, with base broadly rounded. Aedeagus 2.35 mm long, well sclerotised. Basal piece oblong and smooth, shorter than parameres. Medial lobe strong and slightly narrowed towards the apex in dorsal view, longer and narrower than parameres. Parameres with the apex slightly wider than the base, gradually separated from medial lobe, distal portion flat with a small protrusion. Females. Unknown. Immatures. According to pairwise nucleotide distances of COI, one larval population from Hubei province (Lg20-L) (with a distance of 0.025 to the type population) is identified as the same species. Etymology. It is named for Luquan County where the type was collected. Distribution. China: Yunnan: Luquan; Hubei: Tongshan. Remarks. This new species is very similar in outer morphology to L. alticola above described. Thus, like L. alticola above described, the new species can be distinguished all known species via similar diagnosis. This species is further separated from L. alticola by its medial lobe of male genitalia which is more constricted near 5/6 of the apex and by its parameres being a little flatter (Figs 61–63). According to pairwise nucleotide distances of COI, the Lamprigera population from GenBank (accession number KX758087.1) (with a distance of 0.019 to the type population) is identified as the same species.Published as part of Dong, Zhiwei, Yiu, Vor, Liu, Guichun, He, Jinwu, Zhao, Ruoping, Peng, Yanqiong & Li, Xueyan, 2021, Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species, pp. 441-468 in Zootaxa 4950 (3) on pages 454-455, DOI: 10.11646/zootaxa.4950.3.2, http://zenodo.org/record/464996
FIGURES 1–2 in Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species
No full textFIGURES 1–2. Geographic distribution of Lamprigera. 1 Distribution of Lamprigera species. 1. L. alticola sp. nov.; 2. L. luquanensis sp. nov.; 3. L. magnapronotum sp. nov.; 4. L. ausgustior (Faimaire, 1886); 5. L. yunnana (Fairmaire, 1897); 6. L. scutatus (Fairmaire, 1897); 7. L. taimoshana Yiu, 2017; 8. L. minor (Olivier, 1885); 9. L. morator (Olivier, 1885); 10. L. marussii (Pic, 1955); 11. L. nepalensis (Hope, 1831); 12. L. nitidicollis (Fairmaire, 1881); 13. L. tardus (Gorham, 1895); 14. L. tenebrosa (Walker, 1858); 15. L. crassus (Gorham, 1880); 16. L. diffinis (Walker, 1858); 17. L. lutosipennis (Faimaire, 1897); 18. L. nitens (Olivier, 1885); 19. L. dorsalis (Olivier, 1903); 20. L. boyei (Motschulsky, 1853). 2 Distributions of Lamprigera male populations in this study. For detailed information of populations see Table 1.Published as part of Dong, Zhiwei, Yiu, Vor, Liu, Guichun, He, Jinwu, Zhao, Ruoping, Peng, Yanqiong & Li, Xueyan, 2021, Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species, pp. 441-468 in Zootaxa 4950 (3) on page 443, DOI: 10.11646/zootaxa.4950.3.2, http://zenodo.org/record/464996
- …
