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Redescription of Pseudograpsus intermedius Chhapgar, 1955 (Decapoda, Brachyura, Varunidae) from India
No full textNg, Ngan Kee, Trivedi, Jigneshkumar, Bhat, Mithila (2022): Redescription of Pseudograpsus intermedius Chhapgar, 1955 (Decapoda, Brachyura, Varunidae) from India. Zootaxa 5209 (1): 127-138, DOI: https://doi.org/10.11646/zootaxa.5209.1.
FIGURE 1 in Redescription of Pseudograpsus intermedius Chhapgar, 1955 (Decapoda, Brachyura, Varunidae) from India
No full textFIGURE 1. Chhapgarus intermedius (Chhapgar, 1955) comb. nov., holotype, male, CW 10.7 mm, CL 9.0 mm, Mumbai, India, ZSI-C-3363/1. A, dorsal view; B, anterior view; C, ventral view.Published as part of Ng, Ngan Kee, Trivedi, Jigneshkumar & Bhat, Mithila, 2022, Redescription of Pseudograpsus intermedius Chhapgar, 1955 (Decapoda, Brachyura, Varunidae) from India, pp. 127-138 in Zootaxa 5209 (1) on page 132, DOI: 10.11646/zootaxa.5209.1.7, http://zenodo.org/record/732261
New records of two decapod crustaceans (Decapoda: Dendrobranchiata and Pleocyemata) from the Gulf of Mannar, India
No full textPadate, Vinay P., Bhat, Mithila S., Rivonker, Chandrashekher U. (2018): New records of two decapod crustaceans (Decapoda: Dendrobranchiata and Pleocyemata) from the Gulf of Mannar, India. Journal of Natural History 52 (33-34): 2209-2220, DOI: 10.1080/00222933.2018.1524031, URL: http://dx.doi.org/10.1080/00222933.2018.152403
Figure 1 in New records of two decapod crustaceans (Decapoda: Dendrobranchiata and Pleocyemata) from the Gulf of Mannar, India
No full textFigure 1. (a) Geographical location of study area; (b) map of study area indicating location of sampling.Published as part of Padate, Vinay P., Bhat, Mithila S. & Rivonker, Chandrashekher U., 2018, New records of two decapod crustaceans (Decapoda: Dendrobranchiata and Pleocyemata) from the Gulf of Mannar, India, pp. 2209-2220 in Journal of Natural History 52 (33-34) on page 2213, DOI: 10.1080/00222933.2018.1524031, http://zenodo.org/record/517737
Chhapgarus Ng & Trivedi & Bhat 2022, n. gen.
No full textChhapgarus n. gen. Type species. Pseudograpsus intermedius Chhapgar, 1955, by present designation. Description. Carapace squarish, dorsal surface covered with short, brown setae; regions well defined, convex; frontal margin slightly convex, straight; anterolateral margin subcristate with three teeth including first orbital tooth; posterolateral margins not sharply demarcated from anterolateral margin, concave at branchial region, distinctly subparallel; orbits small, eyes completely filling orbit. Third maxillipeds short, stout; small, distinct rhomboidal gape when closed, palp short, with short setae; exopod with short flagellum. Epistome broad, flat, posterior margin entire. Inner surface of chela with granules, setose. Ambulatory legs long, slender with short setae, stout dactyli. Lateral margins of thoracic sternites 4–5 finely granulated; anterior sternal plates without any medial grooves. Male pleon narrowly triangular, with 7 free segments (6 somites plus telson). Female pleon ovate, very broad. G1 stout, gently curving outwards, terminal lobe elongate, slightly curved. Etymology. The new genus is named in honor of Dr. Boman Framji Chhapgar for his valuable contributions to the study of crustacean fauna of Gujarat and Maharashtra States, India. Gender: masculine. Remarks. The description of the genus Pseudograpsus provided by H. Milne Edwards (1837) is brief that has been updated by Ng et al. (2002). In his description, H. Milne Edwards (1837: 81) named two species as belonging to the genus, Pseudograpsus viz. P. pencilliger (Latreille, 1817), and P. pallipes H. Milne Edwards, 1837. No type species was designated. Holthuis (1977) was the first to validly select Cancer penicilliger Latreille, 1817, as the type species (see also Ng & Nakasone 1993: 2). Cancer penicilliger was later synonymized under the senior name, Pseudograpsus setosus (see Ng et al. 2002). The genus Pseudograpsus has a long history of association with Hemigrapsus and Brachynotus (see Tesch 1918; McLay & Schubart 2004; Ng et al. 2002). This association is now being studied in-depth (in preparation). Balss (1934) synonymized P. erythraeus Kossmann, 1894, under P. elongatus. Ng & Nakasone (1993) transferred P. laniger to their new genus, Scutumara Ng & Nakasone, 1993, with a comment that the genus Pseudograpsus needs to be revised. The genus, Pseudograpsus, currently comprises of five species viz. P. setosus (Fabricius, 1778) (= P. pencilliger (Latreille, 1817), type species); P. crassus A. Milne-Edwards, 1868, P. albus Stimpson, 1858, P. elongatus A. Milne-Edwards, 1873, and P. intermedius Chhapgar, 1955. Out of these five species, P. intermedius varies from other species of Pseudograpsus s.s. in having setae on the carapace, chela having soft setae on outer surface, broad and stout ambulatory legs and differences in morphology of reproductive structures, hence Chhapgarus n. gen. is established for Pseudograpsus intermedius Chhapgar, 1955. Interestingly, C. intermedius comb. nov. inhabits the mid-intertidal zone in mangrove habitats (Chhapgar 1955), while species of Pseudograpsus s.s. are found in freshwater streams and/or under pebbles/coral sand habitats along beaches (Tesch 1918; Balss 1922; H.T. Shih, pers. comm). The morphological differences between Chhapgarus n. gen. and Pseudograpsus are given in Table 1. Chhapgarus n. gen., also shows similarity to Utica White, 1847 in having setae on the carapace surface and outer surface of chela, but differs from the latter in the following characters: carapace squarish (versus distinctly quadrangular in Utica); gastric region without “V” shaped ridge (versus prominent “V” shaped ridge on gastric region in Utica); branchial region without horizontal ridge (versus horizontal setose granulated ridge present across the branchial region in Utica).Published as part of Ng, Ngan Kee, Trivedi, Jigneshkumar & Bhat, Mithila, 2022, Redescription of Pseudograpsus intermedius Chhapgar, 1955 (Decapoda, Brachyura, Varunidae) from India, pp. 127-138 in Zootaxa 5209 (1) on page 130, DOI: 10.11646/zootaxa.5209.1.7, http://zenodo.org/record/732261
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
Chhapgarus intermedius Ng & Trivedi & Bhat 2022, comb. nov.
No full textChhapgarus intermedius (Chhapgar, 1955) comb. nov. (Figs. 1–6) Pseudograpsus intermedius Chhapgar, 1955: 257.— Chhapgar 1957: 519.— Hashmi 1964: 452.— Sethuramalingam & Khan 1991: 89.— Selvakumar & Khan 1993: 337.— Tirmizi & Ghani 1996: 170, fig. 65.— Chakraborty et al, 2002: 1392.— Khan et al. 2005: 1319.— Dev Roy & Nandi 2007: 180.— Ravichandran & Kannupandi 2007: 333 (in list).— Haragi et al. 2010: 10 (in list).— Dineshbabu et al, 2011: 23 (in list).— Pawar 2012: 90 (in list).— Trivedi et al. 2018: 75 (in list). Holotype: ZSI C3-363/1, male (CW 10.7 mm, CL 9.0 mm), Mumbai, Maharastra State, India, 17 March 1953, coll. B. F. Chhapgar. Other material examined: LFSC.ZRC-154, 8 males (CW 5.8–11.1 mm, CL 5.4–10.0 mm), 6 females (CW 6.1– 8.6 mm, CL 5.5–7.6 mm), Chapora Estuary (15°37′95″N, 73°45′76″E), Goa state, India, 7 September 2016, coll. M. Bhat; RMNH D-30417, 1 male (CW 11.3 mm, CL 10.4 mm), 1 female (CW 8.6 mm, CL 7.6 mm), Kali River estuary, Karnataka state, India, 1974–1975, coll. U. S. Kakati. Description. Carapace squarish, slightly broader than long; dorsal surface covered with short-brown setae, regions not well defined, convex. Frontal margin slightly convex, slightly bilobed (Figs. 1A, 2A, 4A, 5A, 6A). Anterolateral margin subcristate with three teeth, including orbital tooth, external orbital tooth most distinct, very broad; second tooth smaller in size, third tooth smallest. Posterolateral margins not sharply demarcated from anterolateral margin, almost straight, distinctly converging. Orbits small, eyes completely filling orbit (Figs. 1A, 2A, 4A, 5A, 6A). Third maxilliped with foliaceous merus, broader than long; anterolateral angle produced, auriculiform; distal margin distinctly bilobed, outer lobe larger, base with small median cleft. Ischium longer than broad, sulcus not discernible. Small, distinct rhomboidal gape formed when closed. Exopod with obtuse, blunt inner subdistal angle, flagellum prominent, longer than width of merus (Fig. 2D). Epistome broad, flat, posterior margin entire. Male chelipeds equal to subequal, inner surfaces glabrous; merus without spines, dorsal surface highly setose; carpus without spines or teeth; outer surface of fingers with tufts of long, soft setae. Fingers slightly shorter than palm; dactylus with one large tooth medially followed by small teeth, pollex cutting edge with small teeth, one large tooth present proximally, single prominent ridge present on pollex, finger tips recurved, sharp, hooved (Figs. 1A, B, 2B, 4B). Female chelae slender than those of male, outer surface covered with short setae, a prominent ridge running parallel to the ventral margin (Figs. 2C, 5B). Ambulatory legs with second pair longest. Merus of all ambulatory legs with long, soft setae; anterior margin with blunt subdistal tooth; outer surface of carpus with short setae, anterior and posterior margins of propodus with short setae (Figs. 1A, C, 3F–I, 4A, C, 5A, C, 6A, B). Male pleon narrowly triangular with all segments freely moveable (six somites plus telson), lateral margins highly setose (Figs. 1C, 2E, 4C, 6B); female pleon similar, very broad (Figs. 3A, 5B). G1 stout, gently curving outwards, terminal lobe elongate, slightly curved (Figs. 3B–D). G2 short, small (Fig. 3E). Female vulvae operculate, circular (Fig. 3J). Distribution. The species is so far reported from Pakistan (Tirmizi & Ghani 1996) and India (Trivedi et al. 2018). In India, the species is reported from Maharashtra (Chhapgar 1955, 1957; Pawar 2012), Karnataka (Haragi et al. 2010; Dineshbabu et al. 2011), and Tamil Nadu (Sethuramalingam & Khan 1991; Selvakumar & Khan 1993; Khan et al. 2005; Dev Roy & Nandi 2007; Ravichandran & Kannupandi 2007). Ecology. Chhapgarus intermedius comb. nov. inhabits the mid-intertidal zone in mangrove habitats. Individuals of the species are mostly found under dead logs or rock boulders, and sometimes also in burrows. Coloration. The carapace of fresh specimens is chestnut brown with short black setae. The cheliped and ambulatory legs are light brown. Sternum and abdomen are also light brown. Remarks. Chhapgarus intermedius (Chhapgar, 1955) comb. nov. was described on the basis of 14 specimens (ten males; two females and two ovigerous females) collected from Mumbai (Bombay), Maharashtra State, India (Chhapgar 1955). The holotype male, which was deposited in Zoological Survey of India, Kolkata has been examined in the present study but the rest of the specimens (paratype) examined by Chhapgar (1955) are not traceable. Fresh specimens examined in the present study show agreement with the illustrations and original descriptions given by Chhapgar (1955).Published as part of Ng, Ngan Kee, Trivedi, Jigneshkumar & Bhat, Mithila, 2022, Redescription of Pseudograpsus intermedius Chhapgar, 1955 (Decapoda, Brachyura, Varunidae) from India, pp. 127-138 in Zootaxa 5209 (1) on page 131, DOI: 10.11646/zootaxa.5209.1.7, http://zenodo.org/record/732261
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
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