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(Teleostei: Cobitidae) in the Namak Lake Basin, Iran

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(Teleostei: Cobitidae) in the Namak Lake Basin, Iran Iran. J. Ichthyol. (June 2017), 4(2): 131-139 Received: February 27, 2017 © 2017 Iranian Society of Ichthyology Accepted: May 22, 2017 P-ISSN: 2383-1561; E-ISSN: 2383-0964 doi: 10.7508/iji.2016.02.015 http://www.ijichthyol.org Research Article Taxonomic status of the genus Cobitis (Teleostei: Cobitidae) in the Namak Lake Basin, Iran Soheil EAGDERI1*, Arash JOULADEH-ROUDBAR1, Manoochehr NASRI2, Golnaz SAYYADZADEH3, Hamid Reza ESMAEILI3 1Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran. 2Department of Animal Sciences, Faculty of Agriculture and Natural Resources, Lorestan University, Khoramabad, Iran. 3Ichthyology and Molecular Systematics Research Laboratory, Zoology Section, Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran. * Email: [email protected] Abstract: This study was aimed to report the presence of the genus Cobitis in the Karaj River, Namak Lake basin, Iran and clarify its taxonomic status by providing morphological characteristics, mtDNA COI barcode region and its phylogenetic relationship within the members of the genus Cobitis in Iran. The results revealed that morphometric, meristic and molecular (COI) characters of these specimen are largely overlapping or even identical with those of C. faridpaki. Therefore, we conclude that they are a population belonging to C. faridpaki. Keywords: Taxonomy, Morphology, COI, Spined loach, Distribution. Citation: Eagderi, S.; Jouladeh-Roudbar, A.; Nasri, M.; Sayyadzadeh, G.; Esmaeili, H.R. 2016. Taxonomic status of the genus Cobitis (Teleostei: Cobitidae) in the Namak Lake Basin, Iran. Iranian Journal of Ichthyology 4(2): 131-139. Introduction Sayyadzadeh & Esmaeili, 2017 was recently The members of the genus Cobitis Linnaeus, 1758 described from the Sefid River (western part of the represent one of the most widely distributed Iranian Caspian Sea basin) (Mousavi-Sabet et al. Palearctic primary freshwater fishes (Sawada 1982; 2011, 2015; Jouladeh-Roudbar et al. 2015, Eagderi et Coad 2017). They are found in Eurasia and Morocco al. 2017; Esmaeili et al. 2017). (North Africa) and Southern Asia (Eschmeyer & We collected spined loaches of the genus Cobitis Fong 2011). This genus has four valid species in Iran from the Karaj River drainage (Namak Lake basin, (Mousavi-Sabet et al. 2011; Joulade-Roudbar et al. Iran) in 2016. Therefore, this study was aimed to 2017; Eagderi et al. 2017). Cobitis linea Heckel, 1849 report presence of the genus Cobitis in the Namak is found in the Kor River and upper Kol River Lake basin and clarify its taxonomic status by drainages, C. avicennae Mousavi-Sabet, Vatandoust, providing morphological characteristics, mtDNA Esmaeili, Geiger & Freyhof, 2015 occurs in the COI barcode region and its phylogenetic relationship Karkheh and Karun, two sub-tributaries of the Tigris, within the members of the genus Cobitis in Iran. C. faridpaki Mousavi-Sabet, Vasil'eva, Vatandoust & Vasil'ev, 2011 was described from the Siah River Materials and Methods (eastern part of the Iranian Caspian Sea basin) and Twelve specimens of spined loach were collected C. saniae, Eagderi, Jouladeh-Roudbar, Jalili, from the Karaj River, Namak Lake basin, Iran 131 Iran. J. Ichthyol. (June 2017), 4(2): 131-139 Table 1. Morphometric data of Cobitis faridpaki from the Namak Lake and Caspian Sea basins. Siah River Karaj River male (n=7) female (n=12) male (n=6) female (n=5) Characters range mean±SD range mean±SD mange mean±SD range mean±SD Standard length (mm) 49.2-61.6 37.0-68.0 61.8-92.1 57.8-68.4 In percent of standard length Body depth at dorsal fin origin 16.1-18.3 16.6±0.8 15.3-17.9 16.3±0.8 15.7-17.9 16.9±0.8 15.7-19 17.0±1.2 Caudal peduncle depth 10.1-12.9 11.2±1.0 9.4-11.3 10.4±0.6 8.5-10.3 9.5±0.6 8.7-11.5 9.9±1.0 Predorsal length 50.8-54.9 52.5±1.6 50.8-53.9 52.4±1.1 53.2-55.8 54.2±0.8 53.9-57.6 55.5±1.3 Postdorsal length 44.7-48.6 47.1±1.2 42.4-49.7 46.4±2.5 45.1-49.6 47.5±1.5 44.5-47.8 46.5±1.2 Prepelvic length 56.7-57.8 57.3±0.5 51.6-58.1 56.0±1.7 52.3-57.4 53.8±1.6 54-57.9 55.4±1.5 Preanal length 80.4-83.0 81.6±0.9 79.6-83.0 81.3±1.1 78.7-82.7 80.8±1.4 78.9-82.8 81.4±1.4 Caudal peduncle length 11.2-13.8 12.8±0.8 11.1-13.9 12.6±0.9 11.4-15.7 14.1±1.4 12.5-15.5 13.5±1 Dorsal-fin base length 7.3-11.1 9.4±1.4 7.6-12.6 9.4±1.4 6.7-9.9 8.0±1.0 7.3-9.9 8.2±0.8 Dorsal-fin depth 10.5-17.8 14.2±2.6 12.8-17.6 14.4±1.6 11.6-14.4 13.1±1.1 11.7-16.1 13.8±1.5 Anal-fin base length 6.3-8.4 7.3±0.7 4.4-7.7 6.5±1.0 4.9-7.6 6.1±1.0 5.2-7.2 6.2±0.7 Anal-fin depth 11.0-13.9 12.7±1.1 8.8-12.8 11.4±1.2 6.9-10.7 8.9±1.4 7.7-10.3 9.1±0.9 Pectoral fin length 14.9-18.5 17.2±1.5 13.0-18.6 15.2±1.7 9-13.3 11.3±1.3 9-13.3 11.9±1.5 Pelvic fin length 10.6-14.5 12.3±1.3 9.8-14.5 12.1±1.4 10.3-12.6 11.3±0.8 8.9-12.3 10.8±1.3 Distance between pectoral and pelvic-fin origins 33.4-38.2 35.4±1.6 30.8-36.8 34.1±1.9 31.3-35.8 34±1.4 31.0-37.0 34.7±1.8 Distance between pelvic and anal-fin origins 23.8-25.9 25.1±0.8 23.9-29 26.1±1.4 25.7-29.8 27.5±1.2 24.8-27.8 26.2±1.1 Body width at dorsal fin origin 9.4-11.9 10.7±0.8 9.3-12.5 10.2±0.9 9.3-11 10±0.9 9.1–10.8 10±0.7 Caudal peduncle width 2.7-3.2 2.9±0.2 2.3-3.7 2.9±0.4 1.5-2.2 1.8±0.3 1.4-2.1 1.6±0.4 Head length (HL) 19.2-21.4 20.2±0.9 17.5-21.9 20.4±1.3 16.0-20.2 17.8±1.7 16.6-19.2 18±1.0 In percent of head length Snout length 40.8-43.4 41.7±0.8 37.0-47.1 40.6±3.1 41.1-52.3 46.8±4.2 40.8-50.2 46.5±2.9 Horizontal eye diameter 14.9-20.2 17.8±1.7 15.9-20.9 18.3±1.8 11.5-16.3 14±1.5 12.7-18.8 14.3±2.1 Postorbital distance 44.0-59.2 50.1±4.8 47.1-61.9 51.4±4.1 48.8-59.6 55.2±3.4 50-62.1 55.8±3.7 Head depth at nape 65.3-75.6 70.3±3.6 65.3-80.2 69.2±4.1 64.6-77.9 72.4±4.5 67.8-77.6 72.8±3.6 Head depth at eye 53.4-61.3 58.5±2.4 53.6-64.5 58.0±3.4 53.4-69.1 60.1±4.3 55.7-67.1 61.8±3.9 Dorsal head length 84.0-90.1 87.6±2.2 83.5-91.1 87.3±2.4 84.7-90.7 87.0±3.3 82.0-89.6 85.1±4.9 Head width at nape 37.3-52.5 44.1±4.7 38.8-53.0 44.1±4.6 49.9-52.2 51.4±1.3 48.1-50.3 52.0±2.1 Interorbital distance 14.8-18.5 16.8±1.3 12.9-20.5 16.3±2.2 20.6-25.3 23.6±2.6 19.2-22.1 21.1±1.3 Internasal distance 13.4-22.5 19.4±2.8 16.2-23.7 19.8±2.5 15.6-18.5 17.2±1.5 16.4-17.2 16.3±1.1 Mouth width 13.2-17.5 15.9±1.7 12.4-19.4 15.7±2.1 13.7-17.0 15.4±1.7 12.5-16.1 15.1±1.3 Inner rostral barbel length 12.2-16.6 13.3±2.9 5.9-16.0 10.6±2.8 13.3-21.1 16.5±4.1 12.2-20.2 15.5±6.1 Outer rostral barbel length 13.4-20.6 17.1±2.4 8.0-18.2 15.0±2.9 15.4-17.7 16.4±1.2 15.6-16.1 15.1±1.0 Maxillary barbel length 19.3-27.1 20.9±4.9 14.1-23.5 19.4±3.6 13.0-22.1 17.4±4.6 13.5-22.9 18.4±3.2 (Alborz Province) in May 2016 with an 5% buffered formaldehyde.
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