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Thermosphaeroma thermophilum

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grabs onto a female and moves his legs across her body for less than 15 seconds. Males will assess females on their backs by lifting them up with their legs. This allows them to better determine female body size. During rejection, a male will grab a female for longer than 15 seconds, but less than 5 minutes. During guarding, a male grabs onto a female for longer than 5 minutes. Both isopod genders attempt to mate with large-bodied members of the opposite sex. For females, a large-bodied male is more likely to pass his survival genes on to offspring. This could help females to increase
33: 99: 374:. Their ovaries will mature after mating, an adaptation that evolved in response to male isopods being very aggressive during mating. Females will carry their offspring for about 30 days, after which they will give birth to between 3 and 57 offspring under laboratory conditions, with an average of 16 offspring. After giving birth, their ovaries will need about 30 days to recover before they can mate again. Their 52: 329:, varying noticeably depending on gender. Males tend to reach 7.1 millimeters in length on average (4-13 millimeter range). Meanwhile, females tend to reach 5.1 millimeters in length on average (4.5-6 millimeter range). Both sexes are gray to reddish-brown in color, with the edges of their bodies being tinted bright orange. Their body is flattened and segmented, with the last body segment possessing 74: 619:(USFWS) and the NMDGF, constructed the SIPF.  This artificial habitat was constructed near the isopod's native habitat. It attempts to best replicate its natural environmental conditions. It consists of 8 artificial pools connected by pipes. Controlled propagation of isopods began at the facility in 1990. 600 isopods were introduced to the facility, with 75 isopods per pool. 615:. It now resides on a pipeline constructed in 1947 to provide the city with water. There are also various captive populations residing in the SIPF, ABP, the Minnesota Zoo, the New Mexico Department of Game and Fish (NMDGF) Laboratory in Santa Fe, and the Department of Biology at New Mexico Tech. The city of Socorro, in collaboration with the 451:
To determine if mating is worthwhile, male isopods engage in mate-guarding behavior. There are four main forms of mate guarding behavior: encounter, assessment, rejection, and guarding. During encounter, the male acknowledges a female but does not attempt to guard her. During assessment, the male
431:. Healthy and uninjured isopods are sometimes cannibalized by larger individuals. Victims of cannibalism are always smaller than their attackers. The individuals that are either injured or dying are often eaten by other isopods. This cannibalistic behavior helps to structure the population 743:. This is an artificial habitat constructed outside the isopod's native habitat in order to best replicate its natural environmental conditions. Controlled propagation of isopods began at the facility in 1990. Further captive populations are present in the 536:
The Socorro isopod was formerly endemic to the Sedillo Spring near Socorro County, New Mexico, USA. In 1947, the spring waters were diverted to provide the city of Socorro with drinking water. This forced the isopods to only live in a single old water
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is skewed towards males. Sometimes pregnant females won't give birth because they reabsorb their unborn offspring. April sees the largest number of pregnant females before declining to a minimum number around late summer.
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The historical population size of the Socorro isopod is unknown. Their current population size of the wild population is about 2,500 isopods. The ABP also houses 300 individuals in 5 large tanks that continually
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The Socorro isopod has a lifespan of 1 year. During the timespan between March and October, the mean body size for both males and females increases. It then rapidly decreases from October to February. They reach
1171:"The role of controlled propagation on an endangered species: Demographic effects of habitat heterogeneity among captive and native populations of the Socorro isopod (Crustacea: Flabellifera)" 687:
in the early 1900s. Some isopods still live in the bathhouse remains, but the natural habitat no longer exists. Little is known about the conditions in which the isopod evolved. In 1988, a
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in the wild. Captive populations have been established to secure the future of the isopod. They are held in the SIPF, which was constructed as a collaboration between the city of
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multiple times throughout their lives. Given adequate food and proper temperature conditions they can give birth every two months. They are receptive to mating during their
1552: 1582: 1433: 439:. Aside from cannibalism, the Socorro isopod appears to lack any natural predators. The water is too deep (15–26 cm) for birds to reach them. They eat other 667:(EW). This listing is likely out of date since the isopod was last assessed on August 1, 1996. Based on the five-year review from the USFWS the isopod is likely 1485: 748: 566: 306: 508:. This serves as a hiding place from the larger males that could cannibalize them. Meanwhile, adult males are commonly found living directly on the bottom 1577: 1318: 1284: 1407: 1446: 1170: 736: 616: 1567: 740: 562: 302: 1079: 480:
The Socorro isopod lives in warm aquatic habitats. They like environmental temperatures ranging from 26–33 Β°C (79–91 Β°F). They are
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between 4–11 weeks, with males maturing faster than females. Some females won't sexually mature at all because they will reabsorb their
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incident in 1988. The wild population became extinct when a tree root burst the pipe and cut off water flow to the concrete pools.
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to the bathhouse. To protect against future drought harming the isopod, water was diverted to the SIPF outside the city.
1241: 972:"Reproductive anatomy, precopulatory mate guarding, and paternity in the socorro isopod, thermosphaeroma thermophilum" 744: 696: 554: 355: 294: 553:
back into the pipeline, where a wild population still resides today. There are also captive populations in the SIPF,
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The Socorro isopod is currently protected by the USFWS. Permits are being issued to protect this species. A
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destroyed the wild population, but a captive population at the University of New Mexico was present and was
1108:"Microhabitat segregation and cannibalism in an endangered freshwater isopod, Thermosphaeroma thermophilum" 1334: 1026:"Life history characteristics of thermosphaeroma thermophilum, the socorro isopod (crustacea: peracarida)" 692: 550: 310: 83: 193: 907: 1529: 1394: 1119: 983: 908:"Sexual selection in the socorro isopod, Thermosphaeroma thermophilum (cole) (Crustacea: Peracarida)" 469: 453: 732: 704: 664: 588: 517: 497: 56: 41: 1477: 1516: 1192: 1151: 1053: 935: 683:
The Socorro isopod was native to a spring in Socorro, New Mexico. This spring was converted to a
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against male mate-guarding. These include resistance against guarding, hiding from
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in the city. In 1988, a tree root caused the pipeline to burst, resulting in the
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Jormalainen, Veijo; Shuster, Stephen M.; Wildey, Herbert C. (1999-01-01).
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first described the Socorro isopod in 1897. As of 2006, it resides in
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of the wild population.  The only surviving isopods were from
501: 424: 367: 351: 525: 405: 1399: 1332: 1215:"The Socorro Isopod Swims Upside-Down But Crawls Right-Side-Up" 643:. Vandalism in particular has become a worsening threat to the 627:
The main threat to the Socorro isopod is disruption of thermal
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populations at the Socorro Isopod Propagation Facility (SIPF),
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also houses 300 individuals in 5 large tanks that continually
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Laboratory in Santa Fe, and by the Department of Biology at
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discharge. This disruption results from woody root growth,
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The Socorro Isopod Swims Upside-Down But Crawls Right-Side
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was even written and approved in 1982, before they became
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Times, Molly Ivins Special to The New York (1978-01-19).
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Laboratory in Santa Fe, and the Department of Biology at
866:"Harriet Richardson (1874–1958), First Lady of Isopods" 354:, the reason this might happen is unknown. Females are 1285:"Survivor of Ancient Sea Is Joining 'Endangered' List" 1106:
Jormalainen, Veijo; Shuster, Stephen M. (1997-07-01).
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Lang, Brian; Kelt, Douglas; Shuster, Stephen (2006).
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Survivor of Ancient Sea Is Joining β€˜Endangered’ List
1341: 279:to the thermal water of Sedillo Spring, located in 767:Inland Water Crustacean Specialist Group (1996). 427:. A large part of their diet is also made up by 396:, eating both plant material and other aquatic 976:Marine and Freshwater Behaviour and Physiology 333:. They have seven pairs of legs and a pair of 8: 675:ever listed on the endangered species list. 792:10.2305/IUCN.UK.1996.RLTS.T21741A9315891.en 484:to the thermal waters of Socorro Spring in 1329: 1078:Lang, Brian; Welch, Colleen (2022-04-25). 595:Past and current geographical distribution 72: 50: 31: 20: 1553:IUCN Red List extinct in the wild species 883: 790: 1583:Freshwater crustaceans of North America 759: 617:United States Fish and Wildlife Service 504:females are commonly found residing on 370:at this time to use it later when they 325:The body size of the Socorro isopod is 741:New Mexico Department of Game and Fish 563:New Mexico Department of Game and Fish 303:New Mexico Department of Game and Fish 1236: 1234: 1208: 1206: 835: 833: 831: 7: 1073: 1071: 1069: 1067: 1019: 1017: 1015: 1013: 965: 963: 961: 959: 957: 955: 953: 951: 949: 901: 899: 897: 895: 829: 827: 825: 823: 821: 819: 817: 815: 813: 811: 778:IUCN Red List of Threatened Species 549:communities. These have since been 1024:Shuster, Stephen M. (1981-10-01). 906:Shuster, Stephen M. (1981-08-01). 460:, so females have evolved counter- 14: 1080:"Wildlife Notes - Socorro isopod" 1578:Crustaceans of the United States 97: 412:from cottonwood. They also eat 1266:"Thermosphaeroma thermophilum" 1213:Society, National Geographic. 599:The Socorro isopod used to be 267:. It is commonly known as the 263:is a crustacean in the family 1: 1568:Crustaceans described in 1897 1176:Biodiversity and Conservation 924:10.1016/S0003-3472(81)80004-8 871:Journal of Crustacean Biology 715:Not available at this point. 524:and emerge again later on at 1373:Thermosphaeroma thermophilum 1343:Thermosphaeroma thermophilum 771:Thermosphaeroma thermophilum 663:lists the Socorro isopod as 635:, explosive tests on nearby 260:Thermosphaeroma thermophilum 203:Thermosphaeroma thermophilum 25:Thermosphaeroma thermophilum 1588:Endemic fauna of New Mexico 1219:National Geographic Society 603:to the Sedillo Spring near 295:Albuquerque Biological Park 1604: 1573:Socorro County, New Mexico 443:invertebrates themselves. 281:Socorro County, New Mexico 1189:10.1007/s10531-005-2094-4 996:10.1080/10236249909379036 885:10.1163/20021975-99990102 711:Species status assessment 237:Exosphaeroma thermophilum 224: 217: 199: 192: 94:Scientific classification 92: 70: 48: 39: 30: 23: 1087:New Mexico Game and Fish 247:Exosphaeroma termophilum 1246:biologicaldiversity.org 1030:The Biological Bulletin 864:Damkaer, David (2000). 841:"ECOS: Species Profile" 671:(VU). It was the first 1558:ESA endangered species 392:The Socorro isopod is 227:Sphaeroma thermophilum 1132:10.1007/s004420050235 655:Listing under the ESA 637:Department of Defense 16:Species of crustacean 805:Bowman, 1981, p. 115 785:: e.T21741A9315891. 454:reproductive success 366:process. They store 185:T. thermophilum 1124:1997Oecol.111..271J 988:1999MFBP...32...39J 665:extinct in the wild 358:and are capable of 57:Extinct in the Wild 42:Conservation status 1289:The New York Times 327:sexually dimorphic 287:Harriet Richardson 1540: 1539: 1499:Open Tree of Life 1335:Taxon identifiers 1183:(12): 3909–3935. 651:near the spring. 639:lands, and human 313:following a near- 256: 255: 87: 65: 1595: 1533: 1532: 1520: 1519: 1507: 1506: 1494: 1493: 1481: 1480: 1468: 1467: 1455: 1454: 1442: 1441: 1429: 1428: 1416: 1415: 1403: 1402: 1390: 1389: 1377: 1376: 1375: 1362: 1361: 1360: 1330: 1307: 1306: 1304: 1303: 1280: 1274: 1273: 1262: 1256: 1255: 1253: 1252: 1242:"Socorro isopod" 1238: 1229: 1228: 1226: 1225: 1210: 1201: 1200: 1166: 1160: 1159: 1103: 1097: 1096: 1094: 1093: 1084: 1075: 1062: 1061: 1021: 1008: 1007: 967: 944: 943: 912:Animal Behaviour 903: 890: 889: 887: 861: 855: 854: 852: 851: 837: 806: 803: 797: 796: 794: 764: 679:Five-year review 402:blue-green algae 251: 244: 234: 205: 102: 101: 81: 76: 75: 59: 54: 53: 35: 21: 1603: 1602: 1598: 1597: 1596: 1594: 1593: 1592: 1543: 1542: 1541: 1536: 1528: 1523: 1515: 1510: 1502: 1497: 1489: 1484: 1476: 1471: 1463: 1458: 1450: 1445: 1437: 1432: 1424: 1419: 1411: 1406: 1398: 1393: 1385: 1380: 1371: 1370: 1365: 1356: 1355: 1350: 1337: 1315: 1310: 1301: 1299: 1282: 1281: 1277: 1264: 1263: 1259: 1250: 1248: 1240: 1239: 1232: 1223: 1221: 1212: 1211: 1204: 1168: 1167: 1163: 1105: 1104: 1100: 1091: 1089: 1082: 1077: 1076: 1065: 1042:10.2307/1540805 1023: 1022: 1011: 969: 968: 947: 905: 904: 893: 863: 862: 858: 849: 847: 839: 838: 809: 804: 800: 766: 765: 761: 757: 749:New Mexico Tech 721: 713: 705:self-sustaining 681: 657: 625: 597: 589:self-sustaining 580: 578:Population size 575: 567:New Mexico Tech 534: 478: 449: 400:. They feed on 390: 385: 348:sexual maturity 343: 337:on their head. 323: 307:New Mexico Tech 249: 245: 239: 235: 229: 213: 207: 201: 188: 172:Thermosphaeroma 96: 88: 77: 73: 66: 55: 51: 44: 17: 12: 11: 5: 1601: 1599: 1591: 1590: 1585: 1580: 1575: 1570: 1565: 1563:Sphaeromatidae 1560: 1555: 1545: 1544: 1538: 1537: 1535: 1534: 1521: 1508: 1495: 1482: 1469: 1456: 1443: 1430: 1417: 1404: 1391: 1378: 1363: 1347: 1345: 1339: 1338: 1333: 1327: 1326: 1321: 1314: 1313:External links 1311: 1309: 1308: 1275: 1257: 1230: 1202: 1161: 1118:(2): 271–279. 1098: 1063: 1036:(2): 291–302. 1009: 945: 918:(3): 698–707. 891: 878:(4): 803–811. 856: 807: 798: 758: 756: 753: 720: 717: 712: 709: 680: 677: 656: 653: 633:surface mining 624: 621: 605:Socorro County 596: 593: 579: 576: 574: 571: 533: 530: 496:. The smaller 486:Socorro County 477: 474: 448: 445: 389: 386: 384: 381: 342: 339: 322: 319: 273:Socorro sowbug 269:Socorro isopod 265:Sphaeromatidae 254: 253: 222: 221: 215: 214: 208: 197: 196: 190: 189: 182: 180: 176: 175: 168: 164: 163: 161:Sphaeromatidae 158: 154: 153: 148: 144: 143: 138: 134: 133: 128: 124: 123: 118: 114: 113: 108: 104: 103: 90: 89: 71: 68: 67: 49: 46: 45: 40: 37: 36: 28: 27: 15: 13: 10: 9: 6: 4: 3: 2: 1600: 1589: 1586: 1584: 1581: 1579: 1576: 1574: 1571: 1569: 1566: 1564: 1561: 1559: 1556: 1554: 1551: 1550: 1548: 1531: 1526: 1522: 1518: 1513: 1509: 1505: 1500: 1496: 1492: 1487: 1483: 1479: 1474: 1470: 1466: 1461: 1457: 1453: 1448: 1444: 1440: 1435: 1431: 1427: 1422: 1418: 1414: 1409: 1405: 1401: 1396: 1392: 1388: 1383: 1379: 1374: 1368: 1364: 1359: 1353: 1349: 1348: 1346: 1344: 1340: 1336: 1331: 1325: 1322: 1320: 1317: 1316: 1312: 1298: 1294: 1290: 1286: 1279: 1276: 1271: 1270:IUCN Red List 1267: 1261: 1258: 1247: 1243: 1237: 1235: 1231: 1220: 1216: 1209: 1207: 1203: 1198: 1194: 1190: 1186: 1182: 1178: 1177: 1172: 1165: 1162: 1157: 1153: 1149: 1145: 1141: 1137: 1133: 1129: 1125: 1121: 1117: 1113: 1109: 1102: 1099: 1088: 1081: 1074: 1072: 1070: 1068: 1064: 1059: 1055: 1051: 1047: 1043: 1039: 1035: 1031: 1027: 1020: 1018: 1016: 1014: 1010: 1005: 1001: 997: 993: 989: 985: 981: 977: 973: 966: 964: 962: 960: 958: 956: 954: 952: 950: 946: 941: 937: 933: 929: 925: 921: 917: 913: 909: 902: 900: 898: 896: 892: 886: 881: 877: 873: 872: 867: 860: 857: 846: 842: 836: 834: 832: 830: 828: 826: 824: 822: 820: 818: 816: 814: 812: 808: 802: 799: 793: 788: 784: 780: 779: 774: 772: 763: 760: 754: 752: 750: 746: 742: 738: 734: 730: 726: 725:recovery plan 719:Recovery plan 718: 716: 710: 708: 706: 702: 698: 694: 690: 686: 678: 676: 674: 670: 666: 662: 661:IUCN Red List 654: 652: 650: 646: 642: 638: 634: 630: 623:Major threats 622: 620: 618: 614: 610: 606: 602: 594: 592: 590: 586: 577: 572: 570: 568: 564: 560: 559:Minnesota Zoo 556: 552: 548: 544: 540: 531: 529: 527: 523: 519: 515: 512:. They often 511: 507: 503: 499: 495: 494:United States 491: 487: 483: 475: 473: 471: 470:sperm storage 467: 463: 459: 455: 446: 444: 442: 438: 434: 430: 426: 423: 419: 415: 411: 407: 403: 399: 398:invertebrates 395: 387: 382: 380: 377: 373: 369: 365: 361: 357: 353: 349: 340: 338: 336: 332: 328: 320: 318: 316: 312: 308: 304: 300: 299:Minnesota Zoo 296: 292: 288: 284: 282: 278: 274: 270: 266: 262: 261: 252: 248: 242: 238: 232: 228: 223: 220: 216: 211: 206: 204: 198: 195: 194:Binomial name 191: 187: 186: 181: 178: 177: 174: 173: 169: 166: 165: 162: 159: 156: 155: 152: 149: 146: 145: 142: 139: 136: 135: 132: 129: 126: 125: 122: 119: 116: 115: 112: 109: 106: 105: 100: 95: 91: 85: 80: 69: 63: 58: 47: 43: 38: 34: 29: 26: 22: 19: 1342: 1300:. Retrieved 1288: 1278: 1269: 1260: 1249:. Retrieved 1245: 1222:. Retrieved 1218: 1180: 1174: 1164: 1115: 1111: 1101: 1090:. Retrieved 1086: 1033: 1029: 982:(1): 39–56. 979: 975: 915: 911: 875: 869: 859: 848:. Retrieved 845:ecos.fws.gov 844: 801: 782: 776: 770: 762: 722: 714: 693:reintroduced 682: 658: 626: 598: 581: 573:Conservation 551:reintroduced 535: 516:beneath the 479: 450: 447:Reproduction 433:demographics 391: 344: 341:Life history 324: 311:reintroduced 285: 272: 268: 259: 258: 257: 246: 236: 226: 225: 202: 200: 184: 183: 171: 141:Malacostraca 24: 18: 1512:SeaLifeBase 1473:NatureServe 1421:iNaturalist 1367:Wikispecies 629:groundwater 520:during the 462:adaptations 441:carnivorous 429:cannibalism 420:trees, and 360:reproducing 356:iteroparous 321:Description 297:(ABP), the 250:Rioja, 1951 1547:Categories 1302:2022-04-25 1251:2022-04-25 1224:2022-04-25 1092:2022-04-25 850:2022-04-25 755:References 739:, and the 673:crustacean 669:Vulnerable 609:New Mexico 543:extinction 506:vegetation 490:New Mexico 394:omnivorous 315:extinction 241:Richardson 231:Richardson 210:Richardson 131:Arthropoda 79:Endangered 1297:0362-4331 1140:1432-1939 1112:Oecologia 1050:0006-3185 1004:1023-6244 940:140204939 932:0003-3472 701:reproduce 685:bathhouse 641:vandalism 585:reproduce 518:substrate 510:sediments 498:juveniles 458:fecundity 422:dragonfly 309:. It was 275:. It was 179:Species: 117:Kingdom: 111:Eukaryota 1478:2.116751 1439:11310932 1358:Q1428605 1352:Wikidata 1197:24993178 1156:12759352 1148:28308004 703:and are 649:junk car 587:and are 539:pipeline 418:mesquite 410:detritus 335:antennae 219:Synonyms 157:Family: 127:Phylum: 121:Animalia 107:Domain: 62:IUCN 2.3 1504:2996425 1491:1814200 1413:2207529 1120:Bibcode 1058:1540805 984:Bibcode 733:Socorro 729:extinct 689:drought 645:species 601:endemic 547:captive 482:endemic 476:Habitat 466:suitors 437:species 435:of the 414:juniper 383:Ecology 372:ovulate 364:molting 352:ovaries 331:uropods 291:captive 277:endemic 167:Genus: 151:Isopoda 147:Order: 137:Class: 82: ( 60: ( 1530:263521 1426:114073 1400:347891 1295:  1195:  1154:  1146:  1138:  1056:  1048:  1002:  938:  930:  735:, the 561:, the 557:, the 514:burrow 468:, and 425:nymphs 406:leaves 301:, the 243:, 1905 233:, 1897 212:, 1897 1525:WoRMS 1517:22868 1465:21741 1452:92417 1434:IRMNG 1387:7BWYS 1193:S2CID 1152:S2CID 1083:(PDF) 1054:JSTOR 936:S2CID 737:USFWS 532:Range 502:adult 416:, or 376:brood 368:sperm 1486:NCBI 1460:IUCN 1447:ITIS 1408:GBIF 1293:ISSN 1144:PMID 1136:ISSN 1046:ISSN 1000:ISSN 928:ISSN 783:1996 659:The 526:dusk 500:and 404:and 388:Diet 1395:EoL 1382:CoL 1185:doi 1128:doi 1116:111 1038:doi 1034:161 992:doi 920:doi 880:doi 787:doi 745:ABP 697:ABP 613:USA 555:ABP 522:day 488:in 408:or 271:or 84:ESA 1549:: 1527:: 1514:: 1501:: 1488:: 1475:: 1462:: 1449:: 1436:: 1423:: 1410:: 1397:: 1384:: 1369:: 1354:: 1291:. 1287:. 1268:. 1244:. 1233:^ 1217:. 1205:^ 1191:. 1181:15 1179:. 1173:. 1150:. 1142:. 1134:. 1126:. 1114:. 1110:. 1085:. 1066:^ 1052:. 1044:. 1032:. 1028:. 1012:^ 998:. 990:. 980:32 978:. 974:. 948:^ 934:. 926:. 916:29 914:. 910:. 894:^ 876:20 874:. 868:. 843:. 810:^ 781:. 775:. 747:, 707:. 611:, 607:, 591:. 569:. 528:. 492:, 472:. 283:. 1305:. 1272:. 1254:. 1227:. 1199:. 1187:: 1158:. 1130:: 1122:: 1095:. 1060:. 1040:: 1006:. 994:: 986:: 942:. 922:: 888:. 882:: 853:. 795:. 789:: 773:" 769:" 86:) 64:)

Index


Conservation status
Extinct in the Wild
IUCN 2.3
Endangered
ESA
Scientific classification
Edit this classification
Eukaryota
Animalia
Arthropoda
Malacostraca
Isopoda
Sphaeromatidae
Thermosphaeroma
Binomial name
Richardson
Synonyms
Richardson
Richardson
Sphaeromatidae
endemic
Socorro County, New Mexico
Harriet Richardson
captive
Albuquerque Biological Park
Minnesota Zoo
New Mexico Department of Game and Fish
New Mexico Tech
reintroduced

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