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A First Record of the Smallfin Gulper Shark Centrophorus Moluccensis Bleeker, 1860 (Chondrichthyes

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OPEN ACCESS The Journal of Threafened Taxa fs dedfcafed fo bufldfng evfdence for conservafon globally by publfshfng peer-revfewed arfcles onlfne every monfh af a reasonably rapfd rafe af www.fhreafenedfaxa.org . All arfcles publfshed fn JoTT are regfsfered under Creafve Commons Afrfbufon 4.0 Infernafonal Lfcense unless ofherwfse menfoned. JoTT allows unresfrfcfed use of arfcles fn any medfum, reproducfon, and dfsfrfbufon by provfdfng adequafe credff fo fhe aufhors and fhe source of publfcafon. Journal of Threafened Taxa Bufldfng evfdence for conservafon globally www.fhreafenedfaxa.org ISSN 0974-7907 (Onlfne) | ISSN 0974-7893 (Prfnf) Shorf Communfcaffon A ffrsf record of fhe Smallffn Gulper Shark Cenfrophorus moluccensfs Bleeker, 1860 (Chondrfchfhyes: Squalfformes: Cenfrophorfdae) from fhe Andaman & Nfcobar wafers, Indfan EEZ H.D. Pradeep, Swapnfl S. Shfrke, M. Nashad & Monalfsha Devf Sukham 26 November 2017 | Vol. 9| No. 11 | Pp. 10899–10903 10.11609/jof. 3315 .9. 11. 10899-10903 For Focus, Scope, Afms, Polfcfes and Gufdelfnes vfsff hfp://fhreafenedfaxa.org/Abouf_JoTT For Arfcle Submfssfon Gufdelfnes vfsff hfp://fhreafenedfaxa.org/Submfssfon_Gufdelfnes For Polfcfes agafnsf Scfenffc Mfsconducf vfsff hfp://fhreafenedfaxa.org/JoTT_Polfcy_agafnsf_Scfenffc_Mfsconducf For reprfnfs confacf <[email protected]> Publfsher/Hosf Parfner Threafened Taxa Journal of Threatened Taxa | www.threatenedtaxa.org | 26 November 2017 | 9(11): 10899–10903 A first record of the Smallfin Gulper Shark Centrophorus moluccensis Bleeker, 1860 (Chondrichthyes: Squaliformes: Centrophoridae) from the Andaman & Nicobar ISSN 0974-7907 (Online) waters, Indian EEZ ISSN 0974-7893 (Print) Communication Short H.D. Pradeep 1, Swapnil S. Shirke 2, M. Nashad 3 & Monalisha Devi Sukham 4 OPEN ACCESS 1 Fishery Survey of India, Mormugao Zonal Base, Opp. Microwave Station, Bogda Road, Mormugao, Goa 403803, India 2,3 Fishery Survey of India, Port Blair Zonal Base, Port Blair, Andaman and Nicobar Islands 744101, India 4 Fisheries Resource Management Division, Central Island Agriculture Research Institute, ICAR, Port Blair-744105, Andaman and Nicobar Islands, India 1 [email protected] (corresponding author), 2 [email protected], 3 [email protected], 4 [email protected] Abstract: The Smallfin Gulper Shark Centrophorus moluccensis is in a number of countries, poor sampling and taxonomic reported for the first time from the Andaman & Nicobar waters of the confusion has made identification of Centrophorus spp. Indian EEZ. A male specimen of 785mm total length and weighing 2.34kg was landed by a motorized longliner at Burmanallah, South often problematic (Compagno 1984; Muñoz-Chápuli Andaman District. The specimen was caught off Chidiyatapu, South & Ramos 1989; Compagno et al. 1989, 2005). Seven Andaman at a depth of 250m. A detailed morphological description Centrophorus of the specimen and comparison with previous literature is provided. species are reported to occur in Indian waters: Centrophorus granulosus (Bloch & Schneider Keywords: Andaman & Nicobar Islands, Centrophoridae, Dogfish 1801); C. uyato Rafinesque 1810;C. moluccensis Bleeker Shark, longline, new report, squalene. 1860; C. lusitanicus Bocage & Capello 1864; C. acus Abbreviations: HL - head length; PCL - pre-caudal length; TL - total Garman 1906; C. squamosus Bonnaterre 1788 and C. length atromarginatus Garman 1913 (Nair & Mohan 1970; Appukuttan & Nair 1988; Raje et al. 2002; Venu & Kurup Gulper sharks Centrophorus spp. are commercially 2002; Soundararajan & Roy 2004; Titto D’Cruz 2004; exploited for food and high squalene content in their Jayaprakash et al. 2006; Raje et al. 2007; CMFRI 2007; livers (Compagno 1984; Gordon 1999; Daley et al. Joshi et al. 2008; Vivekanandan & Sivaraj 2008). 2002). They generally occur on upper continental and The global distribution of the Smallfin Gulper Shark is insular slopes between 200–2400 m depth (Compagno uncertain due to taxonomic issues. It has been reported 1984; Last & Stevens 1994; Andrew et al. 1997; Graham from sporadic locations through the western Indian et al. 2001; Compagno et al. 2005). Despite their Ocean: India, South Africa, and southern Mozambique. importance as commercial target and by-catch species The most abundant distribution was noted in the Indo- DOI: http://doi.org/10.11609/jott.3315.9.11.10899-10903 | ZooBank: urn:lsid:zoobank.org:pub:2C8A02C9-AED7-49E3-8392-29ED6DF84FB1 Editor: E. Vivekanandan, Central Marine Fisheries Research Institute, Chennai, India. Date of publication: 26 November 2017 (online & print) Manuscript details: Ms # 3315 | Received 02 February 2017 | Final received 08 November 2017 | Finally accepted 12 November 2017 Citation: Pradeep, H.D., S.S. Shirke, M. Nashad & M.D. Sukham (2017). A first record of the Smallfin Gulper Shark Centrophorus moluccensis Bleeker, 1860 (Chondrichthyes: Squaliformes: Centrophoridae) from the Andaman & Nicobar waters, Indian EEZ. Journal of Threatened Taxa 9(11): 10899–10903; http://doi. org/10.11609/jott.3315.9.11.10899-10903 Copyright: © Pradeep et al. 2017. Creative Commons Attribution 4.0 International License. JoTT allows unrestricted use of this article in any medium, reproduction and distribution by providing adequate credit to the authors and the source of publication. Funding: None. Competing interests: The authors declare no competing interests. Acknowledgements: The authors are thankful to the Director General, Fishery Survey of India, Mumbai for his encouragement during the study period. They also express their sincere thanks to Shri. Ilairaja, fisherman of Burmanallah, South Andaman District for his kind help in sampling. Further, the authors are thankful to the anonymous reviewers of the manuscript. 10899 Ffrsf record of Smallfn Gulper Shark from Andaman wafers Pr adeep ef al. Ffgure 1. Map showfng fhe samplfng sfafon. Courfesy: M. Nashad Wesf Pacffc regfon, fncludfng easfern and wesfern whfch are exclusfvely fshed for squalene confenf fn Ausfralfa, New Caledonfa, Indonesfa, Phflfppfnes, fhefr lfver fn fhese Islands. The specfmen was fdenffed Malaysfa, Tafwan and Japan (Compagno 1984; Talwar & followfng Compagno & Nfem (1998), phofographed Jhfngran 1991; Lasf & Sfevens 2009; Ahmad & Lfm 2012). and morphomefrfc dafa were recorded. Morphomefrfc From Indfan wafers, ff fs reporfed from fhe soufhwesfern measuremenfs of fhe fresh specfmen were faken coasf and Gulf of Mannar (Sflas 1969; Hamsa ef al. 1991) followfng Compagno (1984) wffh a few modffcafons. buf defafled morphomefrfc descrfpfon of fhe specfes The phofos of fhe scales were faken by Olympus CX fs lackfng. From Andaman & Nfcobar wafers fll foday 41 frfnocular mfcroscope wffh 10x magnffcafon. only fwo squalfform dog fshes, Cenfrophorus acus All proporfonal measuremenfs are expressed as and Squalus megalops are reporfed (Soundararajan & percenfage of fofal lengfh (TL) along wffh orfgfnal dafa. Roy 2004). The presenf sfudy reporfs fhe occurrence The specfmen fs deposffed fn fhe museum of Zonal Base of C. moluccensfs from fhe Andaman & Nfcobar wafers of Ffshery Survey of Indfa, Porf Blafr (Referral No. MUS. of fhe Indfan Exclusfve Economfc Zone (EEZ) for fhe frsf FSI.PB/EB/07/2016). fme, along wffh ffs morphomefrfc defafls. Resulfs Maferfals and Mefhods Sysfemafcs The sample was collecfed from fhe landfng cenfre Order: Squalfformes Compagno, 1973 af Burmanallah, Soufh Andaman Dfsfrfcf (Ffg. 1) on Famfly: Cenfrophorfdae Bleeker, 1859 23 July 2016, landed by a moforfzed fshfng boaf. The Genus: Cenfrophorus Müller & Henle, 1837 specfmen was capfured by longlfne gear af a depfh of Cenfrophorus moluccensfs Bleeker, 1860 250m of Chfdfyafapu, Soufh Andaman Dfsfrfcf. A sfngle (Image 1) male specfmen of Cenfrophorus moluccensfs Bleeker, Specfmen Examfned: C. moluccensfs Bleeker, 1860: 1860 was landed along wffh ofher specfes of Squalfdae, Male (adulf), 785mm fofal lengfh (TL), 2.34kg fofal 10900 Journal of Threafened Taxa | www.fhreafenedfaxa.org | 26 November 2017 | 9(11): 10899–10903 Ffrsf record of Smallfn Gulper Shark from Andaman wafers Pr adeep ef al. © H.D. Pradeep Image 1. Dorsolaferal vfew of C. moluccensfs Bleeker, 1860 wefghf. Mozambfque wafers (Hamsa ef al. 1991). The IUCN Dfagnosfs: Body elongafed and slfghfly compressed; Red Lfsf of Threafened Specfes lfsfs fhe sfafus of C. snouf pofnfed, feefh fn fhe fwo jaws markedly dfferenf, moluccensfs as “Dafa Defcfenf” (Graham & Kyne 2013) small and wffh a sfngle cusp, lower feefh much larger and fhe sfafus of ffs easfern Ausfralfan subpopulafon fs fhan upper (Image 2). Two dorsal fns; orfgfn of frsf “Near Threafened” (Graham 2013). dorsal fn close behfnd pecforal fn bases; each dorsal The dfversffy of fhe elasmobranch fn fhe Indfan EEZ fn wffh a spfne on ffs anferfor margfn. Second dorsal needs fo be sfudfed fn defafl. Sflas (1969) recorded fhe fn very small, ½ hefghf of frsf dorsal fn or less, wffh occurrence of C. moluccensfs fn fhe frawl cafches from spfne orfgfn usually well posferfor fo pelvfc fn rear fps. fhe upper confnenfal slope of fhe soufhwesf coasf of Caudal fn wffh sub fermfnal nofch. Caudal peduncle Indfa af depfhs of 180–450 m. A rare case of landfngs of wffhouf dermal keels and precaudal pffs. Dermal C. moluccensfs occurred fn Veerapandfpafnam, Gulf of denfcles of back wfdely separafed and nof overlappfng, Mannar af a depfh of 200m (Hamsa ef al. 1991). low-crowned, broad wffh low rfdges runnfng fhe lengfh Idenffcafon of Cenfrophorus spp. can be dffculf of fhe crown and a shorf cusp on fhefr posferfor edges owfng fo faxonomfc confusfon; however fhe
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  • And Their Functional, Ecological, and Evolutionary Implications

    And Their Functional, Ecological, and Evolutionary Implications

    DePaul University Via Sapientiae College of Science and Health Theses and Dissertations College of Science and Health Spring 6-14-2019 Body Forms in Sharks (Chondrichthyes: Elasmobranchii), and Their Functional, Ecological, and Evolutionary Implications Phillip C. Sternes DePaul University, [email protected] Follow this and additional works at: https://via.library.depaul.edu/csh_etd Part of the Biology Commons Recommended Citation Sternes, Phillip C., "Body Forms in Sharks (Chondrichthyes: Elasmobranchii), and Their Functional, Ecological, and Evolutionary Implications" (2019). College of Science and Health Theses and Dissertations. 327. https://via.library.depaul.edu/csh_etd/327 This Thesis is brought to you for free and open access by the College of Science and Health at Via Sapientiae. It has been accepted for inclusion in College of Science and Health Theses and Dissertations by an authorized administrator of Via Sapientiae. For more information, please contact [email protected]. Body Forms in Sharks (Chondrichthyes: Elasmobranchii), and Their Functional, Ecological, and Evolutionary Implications A Thesis Presented in Partial Fulfilment of the Requirements for the Degree of Master of Science June 2019 By Phillip C. Sternes Department of Biological Sciences College of Science and Health DePaul University Chicago, Illinois Table of Contents Table of Contents.............................................................................................................................ii List of Tables..................................................................................................................................iv