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Electric ray

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142: 572:. Many species of rays and skates outside the family have electric organs in the tail; however, the electric ray has two large kidney-shaped electric organs on each side of its head, where current passes from the lower to the upper surface of the body. The nerves that signal the organ to discharge branch repeatedly, then attach to the lower side of each plaque in the batteries. These are composed of hexagonal columns, closely packed in a honeycomb formation. Each column consists of 500 to more than 1000 plaques of modified striated muscle, adapted from the 168: 544: 556: 120: 580:, these batteries are connected as a parallel circuit, whereas freshwater batteries are arranged in series. This allows freshwater rays to transmit discharges of higher voltage, as freshwater cannot conduct electricity as well as saltwater. With such a battery, an electric ray may electrocute larger prey with a voltage of between 8 volts in some narcinids to 220 volts in 594:
The 60 or so species of electric rays are grouped into 12 genera and two families. The Narkinae are sometimes elevated to a family, the Narkidae. The torpedinids feed on large prey, which are stunned using their electric organs and swallowed whole, while the narcinids specialize on small prey on or
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Electric rays are found from shallow coastal waters down to at least 1,000 m (3,300 ft) deep. They are sluggish and slow-moving, propelling themselves with their tails, not by using their pectoral fins as other rays do. They feed on invertebrates and small fish. They lie in wait for prey
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The torpedo fish, or electric ray, appears continuously in premodern natural histories as a magical creature, and its ability to numb fishermen without seeming to touch them was a significant source of evidence for the belief in
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The electrogenic properties of electric rays have been known since antiquity, although their nature was not understood. The ancient Greeks used electric rays to numb the pain of
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Electrolux addisoni, a new genus and species of electric ray from the east coast of South Africa (Rajiformes: Torpedinoidei: Narkidae), with a review of torpedinoid taxonomy
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Copenhaver, Brian P. (September 1991). "A tale of two fishes: Magical objects in natural history from antiquity through the scientific revolution".
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in the bottom substrate. Both groups use electricity for defense, but it is unclear whether the narcinids use electricity in feeding.
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Alexander, Mauro (1969). "The role of the voltaic pile in the Galvani-Volta controversy concerning animal vs. metallic electricity".
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are at the base of the pectoral fins. The snout is broad, large in the Narcinidae, but reduced in all other families. The mouth,
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Electric rays have a rounded pectoral disc with two moderately large rounded-angular (not pointed or hooked)
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proposed that electric rays use electricity; he built an artificial ray consisting of fish shaped
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in nature during the ages before the discovery of electricity as an explanatory mode.
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of "stunning" people with his puzzling questions, in a manner similar to the way the
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below the sand or other substrate, using their electricity to stun and capture it.
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Theodore Holmes Bullock; Carl D. Hopkins; Richard R. Fay (28 September 2006).
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Stevens, J.; Last, P. K. (1998). Paxton, J. R.; Eschmeyer, W. N. (eds.).
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In the 1770s the electric organs of the torpedo ray were the subject of
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Diagram of structure of electric organs and stacked electrocytes
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This article is about the fish. For a ray of electricity, see
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Compagno, Leonard J.V. and Heemstra, Phillip C. (May 2007) "
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Sharks, Skates, and Rays: The Biology of Elasmobranch Fishes
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Smithiana, Publications in Aquatic Biodiversity, Bulletin 7
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undersea weapon is named after it. The name comes from the
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Collins Latin Gem Dictionary: Latin-English, English-Latin
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Philosophical Transactions of the Royal Society of London
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Philosophical Transactions of the Royal Society of London
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Philosophical Transactions of the Royal Society of London
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Journal of the History of Medicine and Allied Sciences
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John Wiley. pp.  1011:Hunter, John (1775). "An account of the 826: 824: 822: 820: 818: 816: 1964:Taxa named by Fernando de Buen y Lozano 1575:Hexanchiformes (frilled and cow sharks) 1297:: 15-49. Retrieved on October 22, 2008. 1064: 886: 835:. ReefQuest Centre for Shark Research. 795: 14: 1931: 1250: 1231: 1225: 1196: 1087: 1010: 992: 880: 437: 352:. They are known for being capable of 1680: 1679: 1488: 1307: 974: 813: 1903:03A3DB49-C055-B83A-82E7-C10CFE1C7909 1638:Rajiformes (skates and guitarfishes) 857: 839:from the original on 15 October 2008 1595:Heterodontiformes (bullhead sharks) 1349:Electroreception and electrogenesis 1234:International Wildlife Encyclopedia 891:. Baltimore and London: JHU Press. 568:The electric rays have specialised 549:Position of the two electric organs 24: 1065:Edwards, Paul (10 November 2021). 905: 830: 25: 1975: 1605:Carcharhiniformes (ground sharks) 1333: 789: 527: 1600:Orectolobiformes (carpet sharks) 554: 542: 446:and operations. In his dialogue 301: 166: 50: 1959:Extant Eocene first appearances 1628:Torpediniformes (electric rays) 1165: 1116:Journal of the History of Ideas 1081: 1004: 858:Kidd, D. A. (1973). "Torpedo". 354:producing an electric discharge 1585:Pristiophoriformes (sawsharks) 986: 968: 930: 851: 589: 514: 456:has the character Meno accuse 388: 13: 1: 1610:Lamniformes (mackerel sharks) 1590:Squatiniformes (angel sharks) 1580:Squaliformes (dogfish sharks) 782: 27:Order of cartilaginous fishes 1203:Encyclopedia of Neuroscience 887:Hamlett, William C. (1999). 864:Collins Latin Gem Dictionary 7: 765: 10: 1980: 1665:Chimaeriformes (chimaeras) 1409:(S. American knifefishes) 1354:Jamming avoidance response 1199:"Electric Organ Discharge" 531: 29: 1688: 1655: 1618: 1565: 1556: 1524: 1464:History of bioelectricity 1456: 1393: 1362: 1341: 1069:. HAL open-access archive 425:are underneath the disc. 257: 252: 163:Scientific classification 161: 148: 139: 126: 117: 41: 1939:Electroreceptive animals 1633:Pristiformes (sawfishes) 1044:10.1093/jhmas/xxiv.2.140 809:. February 2011 version. 799:; Pauly, Daniel (eds.). 735:(torpedo electric rays) 586:, the Atlantic torpedo. 464:stuns with electricity. 356:, ranging from 8 to 220 801:"Order Torpediniformes" 1197:Kramer, Bernd (2008). 914:Encyclopedia of Fishes 433:Relationship to humans 381: 296:, composing the order 1885:Paleobiology Database 1378:Ampullae of Lorenzini 1257:Nelson, J.S. (2006). 576:(gill arch) muscles. 532:Further information: 478:Compositiones Medicae 409:or thorns. A pair of 1437:(electric catfishes) 421:, and five pairs of 128:Marbled electric ray 1403:(African knifefish) 1261:Fishes of the World 1232:Burton, R. (2002). 1013:Gymnotus electricus 866:. London: Collins. 438:History of research 150:Lesser electric ray 1517:cartilaginous fish 831:Martin, R. Aidan. 290:cartilaginous fish 155:Narcine bancroftii 32:Electric discharge 1926: 1925: 1872:Open Tree of Life 1682:Taxon identifiers 1673: 1672: 1651: 1650: 1567:Selachii (sharks) 1482: 1481: 1374:Electroreceptors 1212:978-3-540-23735-8 961:978-0-387-28275-6 583:Torpedo nobiliana 466:Scribonius Largus 397:(reduced in some 278: 277: 248: 133:Torpedo marmorata 16:(Redirected from 1971: 1919: 1918: 1906: 1905: 1893: 1892: 1880: 1879: 1867: 1866: 1854: 1853: 1851:NBNSYS0000187908 1841: 1840: 1828: 1827: 1815: 1814: 1802: 1801: 1789: 1788: 1776: 1775: 1763: 1762: 1750: 1749: 1737: 1736: 1724: 1723: 1722: 1709: 1708: 1707: 1677: 1676: 1563: 1562: 1509: 1502: 1495: 1486: 1485: 1474:Magnetoreception 1425:(elephantfishes) 1328: 1321: 1314: 1305: 1304: 1298: 1287: 1281: 1280: 1264: 1254: 1248: 1247: 1229: 1223: 1222: 1220: 1219: 1194: 1188: 1187: 1169: 1163: 1162: 1154: 1148: 1147: 1111: 1105: 1104: 1102: 1100: 1085: 1079: 1078: 1076: 1074: 1062: 1056: 1055: 1027: 1021: 1020: 1008: 1002: 1001: 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375: 371: 370: 366: 361: 359: 355: 349: 299: 295: 294:pectoral fins 291: 287: 283: 282:electric rays 272: 269: 267: 264: 262: 259: 258: 256: 251: 246: 241: 238: 235: 234: 231: 228: 225: 224: 221: 218: 215: 214: 211: 208: 205: 204: 201: 198: 195: 194: 191: 188: 185: 184: 181: 178: 175: 174: 169: 164: 160: 156: 151: 147: 143: 138: 134: 129: 125: 121: 116: 109: 104: 99: 94: 89: 84: 79: 74: 69: 64: 59: 54: 48:Eocene–Recent 42:Electric rays 40: 37: 33: 19: 1689: 1627: 1546:Infraphylum 1469:Lateral line 1449:(stargazers) 1413: 1401:Gymnarchidae 1383:Knollenorgan 1294: 1285: 1260: 1252: 1233: 1227: 1216:. 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Retrieved 804: 791: 753: 745: 740:Torpedininae 733:Torpedinidae 720: 694: 686: 678: 670: 662: 654: 637: 629: 621: 613: 593: 581: 567: 518: 482: 477: 462:torpedo fish 447: 441: 427: 392: 367: 362: 297: 288:, flattened 281: 279: 271:Torpedinidae 239: 226:Superorder: 154: 132: 36: 1807:iNaturalist 1714:Wikispecies 1657:Holocephali 976:Walsh, John 696:Typhlonarke 672:Heteronarce 656:Crassinarke 615:Benthobatis 590:Systematics 515:In folklore 509:Leyden jars 493:John Hunter 395:dorsal fins 389:Description 18:Torpedo ray 1933:Categories 1542:Vertebrata 1540:Subphylum 1429:Rajiformes 1423:Mormyridae 1342:Physiology 1218:2012-03-25 843:12 October 783:References 747:Tetronarce 738:Subfamily 712:Subfamily 664:Electrolux 646:Subfamily 623:Diplobatis 608:Narcininae 606:Subfamily 601:Narcinidae 489:John Walsh 487:papers by 444:childbirth 423:gill slits 403:caudal fin 399:Narcinidae 261:Narcinidae 245:F. de Buen 216:Subclass: 631:Discopyge 574:branchial 470:headaches 253:Families 186:Kingdom: 180:Eukaryota 1699:Wikidata 1536:Chordata 1530:Animalia 1528:Kingdom 1431:(skates) 1144:11622951 837:Archived 806:FishBase 766:See also 714:Hypninae 707:Hypnidae 648:Narkinae 458:Socrates 419:nostrils 413:-shaped 266:Hypnidae 230:Batoidea 200:Chordata 196:Phylum: 190:Animalia 176:Domain: 1534:Phylum 1515:Extant 1457:Related 1363:Anatomy 1136:2710043 1052:4895861 755:Torpedo 731:Family 705:Family 639:Narcine 599:Family 476:in his 382:torpere 374:torpedo 369:Torpedo 236:Order: 206:Class: 1890:154073 1877:356640 1864:117888 1838:649684 1786:1TORPO 1705:Q41317 1519:orders 1394:Groups 1273:  1240:  1209:  1180:  1142:  1134:  1099:9 June 1050:  958:  920:  895:  870:  752:Genus 744:Genus 722:Hypnos 719:Genus 693:Genus 688:Temera 685:Genus 677:Genus 669:Genus 661:Genus 653:Genus 636:Genus 628:Genus 620:Genus 612:Genus 491:, and 411:kidney 372:. The 247:, 1926 1916:10215 1911:WoRMS 1898:Plazi 1825:11530 1820:IRMNG 1812:51325 1269:–82. 1132:JSTOR 1095:. BBC 1073:6 May 680:Narke 454:Plato 378:Latin 365:genus 358:volts 1949:Rays 1859:NCBI 1833:ITIS 1794:GBIF 1781:EPPO 1773:8898 1742:BOLD 1271:ISBN 1238:ISBN 1207:ISBN 1178:ISBN 1140:PMID 1101:2022 1075:2022 1048:PMID 1036:XXIV 956:ISBN 918:ISBN 893:ISBN 868:ISBN 845:2008 499:and 474:gout 472:and 449:Meno 286:rays 280:The 53:PreꞒ 1846:NBN 1799:881 1768:EoL 1760:48K 1755:CoL 1747:229 1729:AFD 1293:". 1124:doi 1040:doi 1015:". 336:ɔːr 309:ɔːr 1935:: 1913:: 1900:: 1887:: 1874:: 1861:: 1848:: 1835:: 1822:: 1809:: 1796:: 1783:: 1770:: 1757:: 1744:: 1731:: 1716:: 1701:: 1267:69 1138:. 1130:. 1120:52 1118:. 1091:. 1046:. 1034:. 862:. 815:^ 803:. 452:, 342:iː 157:) 135:) 103:Pg 1508:e 1501:t 1494:v 1327:e 1320:t 1313:v 1279:. 1246:. 1221:. 1186:. 1146:. 1126:: 1103:. 1077:. 1054:. 1042:: 964:. 926:. 901:. 876:. 847:. 348:/ 345:z 339:m 333:f 330:ɪ 327:n 324:ɪ 321:d 318:ɛ 315:p 312:ˈ 306:t 303:/ 153:( 131:( 108:N 98:K 93:J 88:T 83:P 78:C 73:D 68:S 63:O 58:Ꞓ 34:. 20:)

Index

Torpedo ray
Electric discharge
PreꞒ

O
S
D
C
P
T
J
K
Pg
N

Marbled electric ray

Lesser electric ray
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Chondrichthyes
Elasmobranchii
Batoidea
Torpediniformes
F. de Buen
Narcinidae
Hypnidae

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