Knowledge (XXG)

Leptasterias polaris

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33: 353:). In a laboratory study it was found that the starfish detected their prey by odours in the water. Hungry starfish which had not fed for two months, worked their way across the current until their olfactory tube feet, located near the tips of their arms, smelt an edible prey item after which they begin to travel up-current towards the source of the odour. Moving upstream in this way had the advantage that the prey was less likely to detect the approach of the starfish. Well fed starfish wandered in a more random fashion. 46: 357:
a layer on the seabed and the females later release their eggs on top. The females brood the developing eggs for four months but that is probably more to keep them clean and healthy and prevent predation than to speed their development as unbrooded eggs were found in the laboratory to develop at the same rate as brooded ones.
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Breeding takes place when the water temperature falls to about 2 °C (36 °F) and the day length is at its minimum. Over a period of seven to eight weeks the normally solitary starfish begin to aggregate, eventually some climbing on top of others. The males release sperm which accumulates in
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is a small, slow growing, compact starfish with six arms. The aboral (upper) surface has a covering of blunt spiny plates and is usually some shade of brown or grey.
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is a major predator in the cold waters in which it lives. Young individuals are mostly found on rocks less than 10 metres (33 ft) deep and feed on such
827: 620: 853: 659: 698: 899: 814: 866: 760: 392: 858: 664: 313:. Older individuals move to deeper waters where the seabed is sand or mud and feed on clams such as the Greenland cockle ( 45: 581: 690: 32: 559: 521: 315: 894: 586: 349: 140: 729: 321: 871: 765: 607: 568: 437: 380: 677: 742: 493: 162: 40: 845: 651: 801: 711: 594: 501: 752: 573: 716: 485: 445: 343: 309: 250: 418: 441: 333: 303: 888: 279: 97: 256:. It is found in cold waters in the northwest Atlantic Ocean and in polar regions. 806: 792: 599: 327: 117: 737: 672: 633: 553: 469: 544: 338: 253: 107: 77: 819: 57: 505: 470:"Prespawning Behavior, Spawning, and Development of the Brooding Starfish 786: 538: 298: 246: 87: 832: 625: 497: 450: 242: 638: 283: 67: 515: 489: 724: 417:
Rochette, Remy; Hamel, Jean-Franqois; Himmelman, John H. (1994).
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northwards, and in Arctic waters. It has also been found in the
612: 519: 337:) which they dig up with their tube feet. They also eat 776: 528: 423:: role of prey odors, current and feeding status" 278:occurs in the north west Atlantic Ocean from the 468:Hamel, Jean-François; Mercier, Annie (1995). 8: 516: 412: 410: 408: 31: 20: 449: 463: 461: 379:Mah, Christopher (2010). Mah CL (ed.). 374: 372: 370: 366: 7: 730:4148D212-04F8-FF7A-FF33-F91A728F1254 419:"Foraging strategy of the asteroid 331:) and the Atlantic jackknife clam ( 383:Leptasterias (Hexasterias) polaris 14: 393:World Register of Marine Species 347:) and the American pelicanfoot ( 44: 430:Marine Ecology Progress Series 385:(Müller & Troschel, 1842)" 156:(Müller & Troschel, 1842) 1: 215:(Müller & Troschel, 1842) 183:Müller & Troschel, 1842 175:Müller & Troschel, 1842 916: 900:Starfish described in 1842 341:such as the common whelk ( 389:World Asteroidea database 172:Asteracanthion katherinae 168: 161: 146: 139: 41:Scientific classification 39: 30: 23: 271:Distribution and habitat 778:Asteracanthion polaris 316:Serripes groenlandicus 204:Leptasterias bartletti 180:Asteracanthion polaris 350:Arrhoges occidentalis 286:and European waters. 574:Leptasterias_polaris 560:Leptasterias polaris 530:Leptasterias polaris 472:Leptasterias polaris 421:Leptasterias polaris 301:as the blue mussel ( 295:Leptasterias polaris 276:Leptasterias polaris 265:Leptasterias polaris 239:polar six-rayed star 234:Leptasterias polaris 212:Leptasterias polaris 150:Leptasterias polaris 25:Leptasterias polaris 478:Biological Bulletin 442:1994MEPS..106...93R 325:, the blunt gaper ( 16:Species of starfish 451:10.3354/meps106093 339:gastropod molluscs 882: 881: 712:Open Tree of Life 522:Taxon identifiers 230: 229: 224: 216: 208: 200: 196:Asterias borealis 192: 188:Asterias acervata 184: 176: 907: 875: 874: 862: 861: 849: 848: 836: 835: 823: 822: 810: 809: 797: 796: 795: 769: 768: 756: 755: 746: 745: 733: 732: 720: 719: 707: 706: 694: 693: 681: 680: 668: 667: 655: 654: 642: 641: 629: 628: 616: 615: 603: 602: 590: 589: 577: 576: 564: 563: 562: 549: 548: 547: 517: 510: 509: 465: 456: 455: 453: 427: 414: 403: 402: 400: 399: 376: 344:Buccinum undatum 322:Spisula polynyma 310:Hiatella arctica 299:bivalve molluscs 222: 214: 207:A.H. Clark, 1940 206: 198: 190: 182: 174: 152: 49: 48: 35: 21: 915: 914: 910: 909: 908: 906: 905: 904: 885: 884: 883: 878: 870: 865: 857: 852: 844: 839: 831: 826: 818: 813: 805: 800: 791: 790: 785: 772: 764: 759: 751: 749: 741: 736: 728: 723: 715: 710: 702: 697: 689: 684: 676: 671: 663: 658: 650: 645: 637: 632: 624: 619: 611: 606: 598: 593: 585: 580: 572: 567: 558: 557: 552: 543: 542: 537: 524: 514: 513: 490:10.2307/1542065 467: 466: 459: 425: 416: 415: 406: 397: 395: 378: 377: 368: 363: 292: 273: 262: 157: 154: 148: 135: 132:L. polaris 43: 17: 12: 11: 5: 913: 911: 903: 902: 897: 887: 886: 880: 879: 877: 876: 863: 850: 837: 824: 811: 798: 782: 780: 774: 773: 771: 770: 757: 747: 734: 721: 708: 695: 682: 669: 656: 643: 630: 617: 604: 591: 578: 565: 550: 534: 532: 526: 525: 520: 512: 511: 457: 404: 365: 364: 362: 359: 334:Ensis directus 304:Mytilus edulis 291: 288: 272: 269: 261: 258: 228: 227: 226: 225: 220:Pisaster grayi 217: 209: 201: 193: 191:Stimpson, 1862 185: 177: 166: 165: 159: 158: 155: 144: 143: 137: 136: 129: 127: 123: 122: 115: 111: 110: 105: 101: 100: 95: 91: 90: 85: 81: 80: 75: 71: 70: 65: 61: 60: 55: 51: 50: 37: 36: 28: 27: 15: 13: 10: 9: 6: 4: 3: 2: 912: 901: 898: 896: 893: 892: 890: 873: 868: 864: 860: 855: 851: 847: 842: 838: 834: 829: 825: 821: 816: 812: 808: 803: 799: 794: 788: 784: 783: 781: 779: 775: 767: 762: 758: 754: 748: 744: 739: 735: 731: 726: 722: 718: 713: 709: 705: 700: 696: 692: 687: 683: 679: 674: 670: 666: 661: 657: 653: 648: 644: 640: 635: 631: 627: 622: 618: 614: 609: 605: 601: 596: 592: 588: 583: 579: 575: 570: 566: 561: 555: 551: 546: 540: 536: 535: 533: 531: 527: 523: 518: 507: 503: 499: 495: 491: 487: 483: 479: 475: 473: 464: 462: 458: 452: 447: 443: 439: 435: 431: 424: 422: 413: 411: 409: 405: 394: 390: 386: 384: 375: 373: 371: 367: 360: 358: 354: 352: 351: 346: 345: 340: 336: 335: 330: 329: 324: 323: 318: 317: 312: 311: 306: 305: 300: 296: 289: 287: 285: 281: 280:Gulf of Maine 277: 270: 268: 266: 259: 257: 255: 252: 248: 244: 240: 236: 235: 223:Verrill, 1914 221: 218: 213: 210: 205: 202: 199:Perrier, 1875 197: 194: 189: 186: 181: 178: 173: 170: 169: 167: 164: 160: 153: 151: 145: 142: 141:Binomial name 138: 134: 133: 128: 125: 124: 121: 120: 116: 113: 112: 109: 106: 103: 102: 99: 98:Forcipulatida 96: 93: 92: 89: 86: 83: 82: 79: 78:Echinodermata 76: 73: 72: 69: 66: 63: 62: 59: 56: 53: 52: 47: 42: 38: 34: 29: 26: 22: 19: 895:Leptasterias 777: 529: 484:(1): 32–45. 481: 477: 471: 433: 429: 420: 396:. Retrieved 388: 382: 355: 348: 342: 332: 328:Mya truncata 326: 320: 314: 308: 302: 294: 293: 275: 274: 264: 263: 238: 233: 232: 231: 219: 211: 203: 195: 187: 179: 171: 149: 147: 131: 130: 119:Leptasterias 118: 24: 18: 738:SeaLifeBase 673:NatureServe 634:iNaturalist 554:Wikispecies 260:Description 889:Categories 793:Q105395187 436:: 93–104. 398:2012-09-27 361:References 254:Asteriidae 108:Asteriidae 88:Asteroidea 678:2.1128422 126:Species: 64:Kingdom: 58:Eukaryota 846:10819450 787:Wikidata 652:10590798 545:Q2272589 539:Wikidata 506:29281304 247:starfish 163:Synonyms 104:Family: 74:Phylum: 68:Animalia 54:Domain: 833:2273867 753:4780133 626:2273851 498:1542065 438:Bibcode 290:Biology 249:in the 243:species 241:, is a 114:Genus: 94:Order: 84:Class: 872:378867 859:990994 766:292974 750:uBio: 717:463287 704:125154 665:157240 639:564345 613:599497 504:  496:  307:) and 284:Azores 251:family 237:, the 867:WoRMS 841:IRMNG 820:43704 815:EUNIS 807:686QD 761:WoRMS 743:48947 725:Plazi 691:59564 647:IRMNG 600:3THWL 587:32365 494:JSTOR 426:(PDF) 854:ITIS 828:GBIF 699:OBIS 686:NCBI 660:ITIS 621:GBIF 582:BOLD 502:PMID 802:CoL 608:EoL 595:CoL 569:ADW 486:doi 482:188 446:doi 434:106 319:), 245:of 891:: 869:: 856:: 843:: 830:: 817:: 804:: 789:: 763:: 740:: 727:: 714:: 701:: 688:: 675:: 662:: 649:: 636:: 623:: 610:: 597:: 584:: 571:: 556:: 541:: 500:. 492:. 480:. 476:. 460:^ 444:. 432:. 428:. 407:^ 391:. 387:. 369:^ 508:. 488:: 474:" 454:. 448:: 440:: 401:. 381:"

Index


Scientific classification
Edit this classification
Eukaryota
Animalia
Echinodermata
Asteroidea
Forcipulatida
Asteriidae
Leptasterias
Binomial name
Synonyms
species
starfish
family
Asteriidae
Gulf of Maine
Azores
bivalve molluscs
Mytilus edulis
Hiatella arctica
Serripes groenlandicus
Spisula polynyma
Mya truncata
Ensis directus
gastropod molluscs
Buccinum undatum
Arrhoges occidentalis

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