107,055 research outputs found
Leptotrombidium Nagayo, Miyagawa, Mitamura and Imamura 1916
No full textLeptotrombidium Nagayo, Miyagawa, Mitamura and Imamura, 1916 Leptotrombidium Nagayo, Miyagawa, Mitamura and Imamura, 1916 Trombicula (Leptotrombidium), Wharton & Fuller, 1952 Leptotrombidium (Leptotrombidium), Vercammen-Grandjean 1965d Syn.: Mehracula Sinha, 1954 Montivagum Kudryashova, 1988 a Hsuella Wang, Li and Shi 1989 Leptotrombidium (Monosigmum) Wen, 2001Published as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 124, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/474551
Surface plasmon resonance biosensing of the monomer and the linked dimer of the variants of protein G under mass transport limitation
No full textAbstractThis article presented the data related to the research article entitled “Calibration-free concentration analysis for an analyte prone to self-association” (H. Imamura, S. Honda, 2017) [1]. The data included surface plasmon resonance (SPR) responses of the variants of protein G with different masses under mass transport limitation. The friction factors of the proteins analyzed by an ultracentrifugation were recorded. Calculation of the SPR response of the proteins was also described
Zelandopsis morimotoi Imamura 1977
No full textZelandopsis morimotoi Imamura, 1977 (Figure 4A-F) Material examined — New Zealand (all leg. H. Smit): 1/1/0, Bob’s Peak Creek, interstitial dig, western slope, Taipare Bay, Marlborough Sounds, South Island, 41°00.394’ S 173°45.248’ E, alt. 96 m asl, 2-1-2019; 0/1/0, Bob’s Peak Creek, western slope, Taipare Bay, Marlborough Sounds, South Island, 41°00.394’ S 173°45.248’ E, alt. 96 m asl, 2-1- 2019; 0/1/0, Unnamed stream, tributary of Bob’s Peak Creek, Taipare Bay, South Island, 41°00.499’ S 173°44.825’ E, alt. 124 m asl, 2-1-2019; 1/0/0, Upper course of Old Homestead Creek, interstitial dig, Taipare Bay, South Island, 41°01.119’ S 173°42.807’ E, alt. 179 m asl, 2-1-2019. Description — As given for genus. Frontal idiosoma margin concave. Anterior part of dorsum with spine-like structures. Male: Idiosoma 364–373 long ventrally, 356–365 long dorsally and 254–288 wide. Venter posteriorly with a short, apically rounded extension. Gonopore narrow, 24 long; an area surrounding the gonopore without idiosoma pores. Acetabula in the posteroventral sclerotization far posterior to gonopore, 7–8 pairs in irregular rows. Length of P1-P5: 18, 42, 26, 48, 22 (till tip of segment). P2 ventrally with three denticles, P3 ventrally with one denticle. Length of I-leg-4-6: 40, 44, 56 (till tip of segment). IV-leg-2 longer than other segments. Length of IV-leg-4 46, 52, 26. Female: Idiosoma 389–413 long ventrally, 381–405 long dorsally and 300–328 wide. Venter posteriorly with a pair of short, apically rounded extensions. Gonopore 64 long. Number of acetabula difficult to ascertain, but very likely around 20 pairs. Lengths of P1-P5: 18, 46, 26, 52, 24 (till tip). P2 ventrally with 2–5 denticles, P3 with one denticle. Length of I-leg-4-6: 43, 50, 56 (till tip of segment). Length of IV-leg-4-6: 49, 54, 50. Remarks — The specimens collected in this study match the description given by Imamura (1977). Imamura was not able to find the acetabula in his only male specimen. As the male was collected during a zoological expedition, and not by Imamura himself, it is likely that it was fixed in ethanol. This makes specimens dark and some structures, like the indistinct acetabula, are difficult to see. Imamura illustrated some indistinct structures posterior to the male gonopore, apparently not aware that these were the acetabula. Another feature not mentioned by Imamura is the long second segments of legs I-III, which are longer than the other segments of these legs. Habitat. Interstitial, but occasionally collected in superficial waters.Published as part of Smit, Harry, 2019, New and rare species of hyporheic water mites from New Zealand (Acari: Hydrachnidia: Aturidae, Momoniidae with the description of two new genera, one new subgenus and one new species, pp. 364-373 in Acarologia 59 (3) on pages 370-372, DOI: 10.24349/acarologia/20194339, http://zenodo.org/record/517369
Platycephalus orbitalis Imamura & Knapp, 2009, sp. nov.
No full textPlatycephalus orbitalis, sp. nov. Proposed common name: Western-Australian flathead (Figures 1 –5) Platycephalus marmoratus (not Stead, 1908): Hutchins & Thompson, 1983: 78, fig. 112 (Western Australia) (in part); Hutchins & Swainston, 1986: 127, fig. 204 (Western Australia) (in part); Paxton & Hanley, 1989: 469 (Rottnest Islands to Direction Bank, Western Australia) (in part); Knapp, 1991: 29 (off Rottnest Island and Cape Cuvier, Western Australia) (in part); Hutchins, 2001: 28 (Western Australia); Hoese et al., 2006: 943 (Rottnest Island to Direction Bank, Western Australia) (in part). Holotype: CSIRO H 6349 -04, 267.4 mm SL, northwest of Rottnest Island, Western Australia (31 ° 52.56 ’S, 115 ° 18.30 ’E – 31 ° 52.60 ’S, 115 ° 18.49 ’E), 100–102 m depth, 10 Apr. 2006. Paratypes: 6 specimens, all from Western Australia. CSIRO H 6350 -02, 236.3 mm SL, northwest of Rottnest Island (31 ° 53 ’S, 115 ° 16 ’E), 124 m depth, 10 Apr. 2006; CSIRO H 6381 -03, 277.9 mm SL, southwest of Shark Bay (27 °03.12’S, 113 °04.86’E – 27 °02.88’S, 113 °04.80’E), 106 m depth, 6 Dec. 2005; CSIRO T 615, 304.6 mm SL, south of Cape Leeuwin (34 ° 35 ’S, 114 ° 53 ’E), 144 m depth, 23 Feb. 1981; WAM P. 22098 -001, Cape Cuvier (24 ° 10 ’S, 113 ° 20 ’E), 29 July 1972; WAM P. 17451 -001, 2 specimens, 266.0, 333.4 mm SL, Rottnest Island (32 °00’S, 115 ° 30 ’E), 50 m depth, 30 Dec. 1981. Diagnosis. A species of Platycephalus with margin of the interopercle scalloped, skinny sensory tubes on infraorbitals and preopercle well developed, mostly covering cheek region, except for anteroventral region, and body and head lacking distinct large spots and bands dorsally. Description. Counts and proportional measurements are shown in Table 1. Body greatly depressed, mostly covered with ctenoid scales, but some cycloid scales on undersurface. Head greatly flattened, length 3.2 (3.1–3.4) in SL; snout and interorbit naked; nape, and occipital, postorbital, and opercular regions mostly scaled. Snout robust, length 3.2 (3.1–3.3) in HL, longer than orbital diameter. Upper surface of eye without papillae. Iris lappet broad, well expanded and simple dorsally, and small (broad in one paratype), simple, and weakly convex ventrally (Fig. 2 A). Interorbital width 7.2 (6.9–8.4) in HL, becoming wider with growth, shorter than orbital diameter. Spines and ridges weakly developed on top and side of head (Fig. 2 B). Nasal lacking spines. Lachrymal with two (or one in five paratypes) antrorse spines. Single preocular spine present. Suborbital ridge entirely smooth. Single postorbital spine present. Frontal ridges lacking spines. Supracleithrum with spine. Preopercle with two spines; lower spine slightly longer than upper one, not reaching posterior margin of opercle; upper lacking supplementary spine. Opercle with two spines, lacking prominent ridge. Interopercular flap absent; margin of interopercle scalloped (Fig. 3 A). Maxilla reaching beyond anterior margin of pupil, length 2.7 (2.6–2.7) in HL. Teeth in bands on jaws and palatine, and in shallowly V-shaped (or crescent in a paratype) patch on vomer; tooth band on upper jaw lacking distinct notch medially. Upper jaw with several small canine teeth anteriorly; remainder of jaw with small- to moderate-size conical teeth. Lower jaw mostly with two tooth rows, partially arranged in four rows (or partially arranged in three rows in some paratypes); inner row with longer conical teeth; outer row(s) with small-size conical teeth. Palatine with two tooth rows: inner row with longer and stouter conical teeth, outer row with small conical teeth. Vomer with small- to moderate-size canine teeth anteriorly and a few canine teeth posteriorly. Lip margins without papillae. Skinny sensory tubes on infraorbitals and preopercle well developed, mostly covering cheek region, except for anteroventral region (Fig. 3 A). Pored scales in lateral line each with one exterior opening posteriorly; opening in most pored scales directed posteroventrally, in several scales posterodorsally. First dorsal fin originating posterior to opercular margin. First and second dorsal fin narrowly separated. Pectoral fin rounded posteriorly, length 2.2 (2.0– 2.3) in HL. Posterior tip of pelvic fin reaching to third anal fin ray, length 1.2 (1.1–1.3) in HL. Caudal fin slightly rounded (or mostly flat in some paratypes) posteriorly, length 1.8 (1.7–1.9) in HL. Color in alcohol. Body and head pale brown, lacking distinct large spots and bands dorsally, whitish ventrally. Head densely covered with very small brownish spots. First and second dorsal fins with small brown spots along rays. Pectoral fin pale brown with white lower margin and scattered small darker brown spots. Pelvic fin dark brown with pale brown basal portion and whitish outer margin. Anal fin with brownish pigments along rays; membranes of posterior portion of anal fin dusky. Caudal fin blackish, with pale brownish basal area and white posterior margin; upper margin with several blackish short oblique bands continuous with middle blackish area. Color when fresh (based on color photographs of holotype): Color mostly similar to that in alcohol. Distribution. Known only from western Australia, ranging from Cape Cuvier (24 °S) to south of Cape Leeuwin (34 °S) (e.g., Hutchins, 2001; this study). Pectoral fin rays 19 20 21 22 P. orbitalis (n= 7) 1 5 * 1 P. marmoratus (n= 9) 2 5 * 2 Etymology. The specific name of this new species is derived from Latin for “eye”, based on its characteristic feature of a narrower interorbit. Remarks. Platycephalus orbitalis belongs to the genus Platycephalus in having pored scales in the lateral line more than 60 and a single tooth plate on the vomer (Imamura, 1996; Knapp, 1999). Platycephalus orbitalis is most similar to P. marmoratus in having a combination of following the characters: 13 second dorsal and anal fin rays; 65–68 pored scales in lateral line, each with one exterior opening posteriorly; snout and interorbit naked; lower opercular spine slightly longer than upper one; interopercular flap absent; no strong canine teeth on jaws, palatine, or vomer; skinny sensory tubes from infraorbitals and preopercle extending cheek region; and caudal fin blackish with white posterior margin. Other members of the genus Platycephalus do not possess this combination of characters (Knapp, 1991; Imamura, 2006). For example, a naked snout and interorbit are found only in P. marmoratus, P. chauliodous Knapp, 1991 and P. laevigatus Cuvier in Cuvier & Valenciennes, 1829, and the blackish caudal fin with the white posterior margin is only present in P. marmoratus among known members of Platycephalus (e.g., Imamrua, 2006). However, P. orbitalis is easily separable from P. marmoratus in having the margin of the interopercle scalloped (vs. smooth in P. marmoratus) (Fig. 3). In addition, there is a difference in the degree of the development of the skinny sensory tubes from the infraorbitals and preopercle covering cheek region; they mostly cover the cheek region, except for the anteroventral region in P. orbitalis, whereas they only partially cover it in P. marmoratus (Fig. 3). The coloration is also helpful separating these two species; viz. the body and head lack distinct large spots and bands dorsally in P. orbitalis, while they are marbled with dark brown, brown, and pale irregular bands and spots in P. marmoratus. Platycephalus orbitalis is also distinguished from P. marmoratus in having a larger orbital diameter (17.5–20.3 % HL) and narrower interorbit (11.9–14.6 % HL), the former larger than the latter in examined material (vs. orbital diameter smaller, 15.2–20.1 % HL, and interorbit wider, 13.6–21.4 % HL, the former becoming smaller than latter by 270 mm SL in P. marmoratus) (Fig. 4), although the ranges of the orbital diameter and interorbital width of the two species are partly or mostly overlapping. Finally, the range and mode of the number of the pectoral fin rays differ in P. orbitalis and P. marmoratus, and this difference is statistically significant (Mann-Whitney’s U test; P <0.01), although the ranges of these species also overlap (Table 2). Comparative materials. Platycephalus marmoratus (10 specimens, all collected from eastern Australia): AMS I. 15279 (471.6 mm SL); AMS I. 15260 (holotype, 310.4 mm SL); AMS I. 20721 -002 (270.9 mm SL); AMS I. 20870 -001 (178.0 mm SL, dissected by Imamura, 1996); AMS I. 22129 -004 (309.5 mm SL); AMS I. 25663 -013 (169.5 mm SL); AMS I. 25665 -026 (184.6 mm SL); AMS I. 27322 -006 (173.0 mm SL); QM I. 17021 (221.6 mm SL); QM I. 2842 (398.8 mm SL).Published as part of Imamura, Hisashi & Knapp, Leslie W., 2009, Platycephalus orbitalis, a new species of flathead (Teleostei: Platycephalidae) collected from western Australia, pp. 57-63 in Zootaxa 2271 on pages 58-62, DOI: 10.5281/zenodo.19096
Pharmacological preconditioning with resveratrol : an insight with iNOS knockout mice
No full textResveratrol, a natural antioxidant and polyphenol found in grapes and wine, has been found to pharmacologically precondition the heart through the upregulation of nitric oxide (NO). To gain further insight of the role of NO in resveratrol preconditioning, mouse hearts devoid of any copies of inhibitory NO synthase (iNOS) (iNOS knockout) and corresponding wild-type hearts were perfused with 10 microM resveratrol for 15 min followed by 25 min of ischemia and 2 h of reperfusion. Control experiments were performed with wild-type and iNOS knockout hearts that were not treated with resveratrol. Resveratrol-treated wild-type mouse hearts displayed significant improvement in postischemic ventricular functional recovery compared with those of nontreated hearts. Both resveratrol-treated and nontreated iNOS knockout mouse hearts resulted in relatively poor recovery in ventricular function compared with wild-type resveratrol-treated hearts. Myocardial infarct size was lower in the resveratrol-treated wild-type mouse hearts compared with other group of hearts. In concert, a number of apoptotic cardiomyocytes was lower in the wild-type mouse hearts treated with resveratrol. Cardioprotective effects of resveratrol was abolished when the wild-type mouse hearts were simultaneously perfused with aminoguanidine, an iNOS inhibitor. Resveratrol induced the expression of iNOS in the wild-type mouse hearts, but not in the iNOS knockout hearts, after only 30 min of reperfusion. Expression of iNOS remained high even after 2 h of reperfusion. Resveratrol-treated wild-type mouse hearts were subjected to a lower amount of oxidative stress as evidenced by reduced amount of malonaldehyde content in these hearts compared with iNOS knockout and untreated hearts. The results of this study demonstrated that resveratrol was unable to precondition iNOS knockout mouse hearts, whereas it could successfully precondition the wild-type mouse hearts, indicating an essential role of iNOS in resveratrol preconditioning of the heart
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
Platycephalus australis Imamura, 2015, sp. nov.
No full textPlatycephalus australis sp. nov. Proposed common English name: Australian bartail flathead (Figs. 34 –35, 36 A, 37; Tables 13–14) Platycephalus indicus (not Linnaeus, 1758): Paxton & Hanley, 1989: 469; Knapp, 1999: 2409, unnumbered fig. (in part); Hoese et al., 2006: 942. Material examined. Holotype: WAM P. 29859 -001, 477 mm SL, Exmouth Gulf, WA, Australia (22 ° 28 ’S, 114 ° 13 ’E), 22 May 1988. *Tending to decrease with growth. **Nine or 10 caudal-fin rays in specimens <50 mm SL (incompletely branched caudal fin). Paratypes (11 specimens, from north and northeastern Australia): AMS I. 21831 -028, 294 mm SL, Arafura Sea (10 ° 53 ’S, 132 °02’E), 36–40 m depth, 14 Nov. 1980; AMS I. 34397 -046, 273 mm SL, AMS I. 34397 -075, 214 mm SL, HUMZ 215745 (ex. AMS I. 34397 -075), 184 mm SL, South Arm Channel, Port Clinton, Qld (23 ° 34.13 ’S, 150 ° 44.75 ’E), 10 m depth, 25 Oct. 1993; CSIRO 3916 -01, 415 mm SL, west of Weipa, Gulf of Carpentaria, Qld (12 ° 32 ’S, 141 ° 28 ’E – 12 ° 31 ’S, 141 ° 28 ’E), 22 m depth, 8 March 1995; CSIRO H 6714 -01, 232 mm SL, southeast of Bowling Green Bay, Qld (19 ° 28 ’S, 147 ° 32 ’E – 19 ° 27 ’S, 147 ° 32 ’E), 15 m depth, 2 Dec. 2003; NTM S. 10414 -004, 2 of 7 specimens, 125–126 mm SL, Ludmilla Creek, Darwin, NT (12 ° 25 ’S, 130 ° 51 ’E), 0–0.5 m depth, 26 Nov. 1981; NTM S. 10738 -013, 2 specimens, 123–147 mm SL, Buchanan Island, Bathurst Island, NT (11 ° 49 ’S, 130 ° 39 ’E), 18 Nov. 1982; NTM S. 17108 -012, 229 mm SL, Haycock Reach, Darwin Harbour, NT (12 ° 34.99 ’S, 130 ° 57.67 ’E), 8–9 m depth, 28 March 2011. Non-types (13 specimens, from north and northeastern Australia): AMS I. 22720 -017, 1 of 2 specimens, 51.4 mm SL, Three Mile Creek, Cape Pallarenda, Townsville, Qld (19 ° 11.14 ’S, 146 ° 46 ’E), 0–1 m depth, 8 Oct. 1981; AMS I. 25676 -002, 310 mm SL, south of Moreton Bay, Qld (27 ° 25 ’S, 153 ° 20 ’E), 2 March 1985; NTM S. 10414 - 0 0 4, 5 of 7 specimens, 63.6–106 mm SL, Ludmilla Creek, Darwin, NT (12 ° 25 ’S, 130 ° 51 ’E), 0–0.5 m depth, 26 Nov. 1981; NTM S. 10553 -007, 6 specimens, 81.5–109 mm SL, East Arm Mudflats, Darwin, NT (12 ° 29.5 ’S, 130 ° 34 ’E), 6 Sep. 1982. Diagnosis. A species of Platycephalus with the following combination of characters: first dorsal fin with a single small isolated spine anteriorly; second dorsal-fin rays 13–14, usually 13: anal-fin rays 13; pectoral-fin rays 19–21, usually 20; gill rakers 1–2 + 3–8 = 4–10 (tending to decrease with growth); postorbital length 51.6–63.6 % HL; snout, area anteroventral to eye, interorbit, and occipital region scaled; upper iris lappet usually simple, triangular; a finger-like interopercular flap present; upper jaw without large caniniform teeth; teeth absent on dorsal surface of anterolateral edge of upper jaw; palatine teeth in two rows; vomerine teeth usually in one row; caudal fin with a yellow marking on midline when fresh. Description. Counts and measurements shown in Table 13. Data for all specimens, including both non-types and paratypes, presented first, followed by holotype in parentheses. Body greatly depressed, mostly covered with ctenoid scales, but some cycloid scales on undersurface. Head greatly flattened, length 2.8–3.2 (3.2) in SL; scales covering snout, a small area anteroventral to eye, interorbit, occipital region, nape, and postorbital and opercular regions; suborbital region naked. Snout robust, longer than orbital diameter, length 3.6 –4.0 (3.8) in HL. Upper surface of eye without papillae. Upper iris lappet simple, triangular dorsally; lower weakly convex (unobservable in holotype) (Fig. 35 B). Interorbital width 5.5–15.3 (6.3) in HL, increasing with growth; orbital diameter 5.4 –8.0 (8.4) in HL, decreasing with growth; interorbit narrower than orbital diameter in smaller specimens, becoming equal to or wider than orbital diameter by 232 mm SL (including holotype). Spines and ridges on top and side of head weakly developed (Fig. 35 B). Nasal usually with a single distinct spine in 123 mm SL or smaller specimens (absent in 106 mm SL specimen), a small or rudimentary spine, or spine absent in larger specimens (absent in holotype). Lachrymal with two embedded antrorse spines. Single preocular spine present. Single preorbital spine present or absent in 109 mm SL or smaller specimens, absent in larger specimens (including holotype). Suborbital ridge usually with a spine below and slightly posterior to posterior margin of eye, often with a spine below and slightly anterior to middle of eye in 125 mm or smaller specimens (lacking both spines on right side of 123 mm SL specimen); with or without a spine below and slightly posterior to posterior margin of eye in 175 to 270 mm SL specimens; and without spines in 273 mm SL or larger specimens (including holotype). Supraorbital ridge serrated posteriorly, with one to seven small spines (two on left and one on right in holotype). Single postocular spine present. Pterotic with one to six spines (one). Frontal and supraoccipital with entirely smooth ridges. Parietal with one or two spines (rudimental spine on left, spine absent on right). Supratemporal usually with one spine (sometimes two or zero) in 294 mm SL or smaller specimens (spines absent in 415 mm SL specimen and holotype). Posttemporal usually with one spine; rarely absent in some specimens in 125 mm SL or larger (including holotype). Supracleithrum usually with one spine (spine absent only in holotype). Preopercle with two distinct spines; lower spine slightly longer than upper (including holotype) or spines subequal, not reaching posterior margin of opercle; upper spine with supplementary spine in 147 mm SL or smaller specimens, usually without in 184 mm SL or larger specimens (including holotype) (rudimental supplementary spine in 294 mm SL specimen). Opercle with two spines, lacking prominent ridge. Finger-like interopercular flap present; margin of interopercle not scalloped. Maxilla reaching beyond anterior margin of orbit, length 2.6–2.8 (2.6) in HL, tending to extend posteriorly with growth [just below posterior margin of orbit in largest examined specimen (holotype)]. Teeth in bands on jaws and palatine, a single shallow V-shaped or crescentic patch on vomer (shallow crescentic patch in holotype); tooth band on upper jaw lacking distinct notch mesially. Upper jaw with several large conical or small caniniform (large conical in holotype) teeth anteromedially, villiform teeth anterolaterally, teeth tending to be larger medially; remainder of jaw with small conical and villiform teeth; teeth absent on dorsal surface of anterolateral edge of upper jaw. Lower jaw usually with one villiform tooth row laterally (a narrow villiform band in holotype) and one small to moderate conical tooth row medially, teeth tending to become larger posteriorly; lateral villiform teeth forming two or three rows anteriorly in several paratypes and non-types. Palatine with two tooth rows; inner row with small conical teeth, outer row with small villiform teeth. Vomer with single villiform to moderate conical (moderate conical in holotype) tooth row; some specimens 147 mm SL or larger with additional villiform teeth anteriorly and/or posteriorly (teeth anteriorly in holotype). Lip margins without papillae. Fleshy sensory tubes on suborbitals and preopercle not covering cheek region. Pored scales in lateral line each with a pair of sensory ducts and exterior openings posteriorly. First dorsal fin originating posterior to opercular margin. First and second dorsal fin narrowly separated. Pectoral fin rounded posteriorly, length 5.6–8.1 (7.1) in SL. Posterior tip of pelvic fin reaching between anus and base of fourth anal-fin ray (reaching anal-fin origin), length 4.0– 5.1 (4.5) in SL. Caudal fin usually slightly rounded or mostly straight posteriorly (slightly concave in holotype), length 5.5–6.8 (7.2) in SL. Color in alcohol. In holotype (Fig. 34), body and head brown above, pale below. Head with single indistinct, dark brown band crossing occipital and anterior opercular regions. Side of head with many small dark brown spots. Body with two dark brown bands below second dorsal fin; anterior band broad, posterior band narrow. First and second dorsal, pectoral and pelvic fins with small, dark brownish spots along rays. Pectoral and pelvic fins with paler outer margins. Anal fin pale, with melanophores along membrane between seventh to last fin rays; melanophores thicker posteriorly. Caudal fin with the following markings: a long dark brown band on both the upper and lower portions; short blackish band above long dark brown band on upper portion; short dark brown band below long dark brown band on lower portion; small brownish spots on dorsal portion. In paratypes and non-types, caudal fin usually with three dark brown or black bands; middle band paler than dorsal and ventral bands. In CSIRO H 3916 -01 (415 mm SL, paratype) caudal fin with four bands; middle two bands brownish, and dorsal and ventral two bands dark brown. Color when fresh (based on color photographs; Figs. 36 A, 37). Caudal fin with yellow marking on midline; its size variable, small (Fig. 36 A), medium (Fig. 37 A) or large (Fig. 37 A). Other coloration similar to preserved condition. Distribution. Known from northern Australia, from Exmouth Gulf, WA (22 ° 28 ’S) to south of Moreton Bay, Qld (27 ° 25 ’S) in depths from at least 0.5–36 m (this study). Size. Recorded maximum length 477 mm SL (554 mm TL) (this study; Fig. 34). Etymology. The specific name australis derived from Latin is proposed in reference to its type locality, Australia. Remarks. Platycephalus australis sp. nov. has previously been misidentified as Platycephalus indicus, both species being characterized by usually 13 second dorsal- and anal-fin rays, the snout, area anteroventral to the eye, interorbit and occipital region scaled, large caniniform teeth absent on the upper jaw, a finger-like interopercular flap, palatine teeth arranged in two rows and the caudal fin with a yellow marking on the middle when fresh. In fact, the yellow mid-caudal fin marking occurs only in the above two species. However, P. australis sp. nov. is separable from P. i n di c us in having fewer total gill rakers (4–10 in P. australis vs. 7–10 in P. i n di c us, tending to decrease with growth in both species) and a longer postorbital region (51.6–63.6 % HL vs. 51.4–61.6 % HL) than the latter at a comparable size, although a considerable overlap occurs (Fig. 38). In addition, P. australis sp. nov. differs from P. indicus in having a greater number of pectoral-fin rays (19–21, usually 20 vs. 18-20, usually 19) (Table 14). The validity of P. australis sp. nov. has also been demonstrated from genetically reconstructed phylogenetic relationships of Platycephalus, showing that “ P. indicus ” from Australia, including a specimen with a yellow marking on the mid-caudal fin (thus probably P. australis sp. nov.) and P. i nd i c u s from the Indian Ocean and Indonesia are included in different monophyletic clades, the degree of speciation between the two species being similar to that of P. conatus and P. richardsoni (sister species) (W. White, personal communication, 20 June 2013). A detailed comparison of P. australis sp. nov. and P. i ndicus is presented in Table 13. Among other species with usually 13 second dorsal- and anal-fin rays, P. australis sp. nov. is easily distinguished from P. endrachtensis in having a broader interorbit and longer postorbital region (interorbital width 6.5–18.1 % HL and postorbital length 51.6–63.6 % HL in P. australis sp. nov. vs. 7.7 –12.0% HL and 50.7–56.9 % HL in P. endrachtensis) (Fig. 30), from P. angustus, P. cultellatus, P. f u s cu s, and Platycephalus sp. 1 and sp. 2 (sensu Nakabo, 2002) in having the first dorsal fin with a single small isolated spine anteriorly (usually two in the other species), and from P. westraliae in having a simple triangular upper iris lappet (usually broad and bilobed in P. westraliae).Published as part of Imamura, Hisashi, 2015, Taxonomic revision of the flathead fish genus Platycephalus Bloch, 1785 (Teleostei: Platycephalidae) from Australia, with description of a new species, pp. 151-207 in Zootaxa 3904 (2) on pages 199-203, DOI: 10.11646/zootaxa.3904.2.1, http://zenodo.org/record/23355
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
FIGURE 2 in Platycephalus orbitalis, a new species of flathead (Teleostei: Platycephalidae) collected from western Australia
No full textFIGURE 2. Lateral views of iris lappet (right eye) (A) and dorsal view of head (B) in Platycephalus orbitalis, sp. nov., CSIRO H 6350-02, 236.3 mm SL, paratype, northwest of Rottnest Island, Western Australia.Published as part of Imamura, Hisashi & Knapp, Leslie W., 2009, Platycephalus orbitalis, a new species of flathead (Teleostei: Platycephalidae) collected from western Australia, pp. 57-63 in Zootaxa 2271 on page 59, DOI: 10.5281/zenodo.19096
Two new species of the water mite family Pontarachnidae (Acari: Hydrachnidia), with a discussion of the taxonomic status of Pontarachna hinumaensis Imamura
No full textSmit, Harry (2002): Two new species of the water mite family Pontarachnidae (Acari: Hydrachnidia), with a discussion of the taxonomic status of Pontarachna hinumaensis Imamura. Zootaxa 22: 1-8, DOI: http://doi.org/10.5281/zenodo.461988
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