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Engystomops petersi

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364: larvae are generally perceived to be the largest in size of all Engystomops larvae. Its larval structure is mainly composed of the body, snout, oral disc, vent tube, tail, dorsal fin, ventral fin, and other organs. The length of the larva usually is around 22.7 mm. Its body length comprises a little less than half of its total length. It has a broad snout that is wide and round with nostrils that are slightly discolored on the outer rim. Its oral disc is filled with small papillae arranged rows with various tip lengths and shapes.  The jaw has a dark coloration and is marked by serrations that follow an arc-shaped pattern. 77: 33: 52: 404:. They are terrestrial frogs often found in leaf-litter. They are nocturnal, and prefer humid environments. While they are terrestrial, they breed near water bodies, specifically on the edges of lakes, ponds, and pools. The males sing and send mating calls while floating on their backs in the water. The genus 531:
tend to prefer local calls over foreign calls from male conspecifics. They don’t tend to recognize different frequency calls. They also prefer the complex calls that include a suffix at the end compared to the simpler calls with a prefix and whine only. The strong preference for local males serves as
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larva has only been reported after preservation. In preservative, its coloration is mainly dark to light brown. Aspotty mesh pattern with speckles around certain regions of the body is also visible. The tail is light brown with speckles all over and the fins are translucent with threadlike markings.
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are characterized by bulbous fingers in which the first finger is greater in length compared to the second finger.  Their build varies from slender to stocky. They are also distinct from other similar frogs in that some females have concealed eardrums or tympani and males have prominent tympani.
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consists of two parts. The first part of the advertisement call is known as the prefix. The prefix consists of one or two short bursts of sound at a frequency of about 20-70 ms. The second part of the advertisement call consists of the whine. The whine is a lower-frequency sweeping call that occurs
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is a lineage of frogs located in the Andean foothills of Ecuador, Peru, and Bolivia, extending to the Amazon basin in Brazil. Speciation events of the genus are well studied and typically defined using the study of mitochondrial DNA, mating calls, and cytogenetic variation among different frogs in
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are relatively small frogs. Males measure 21–31 mm (0.83–1.22 in) in snout–vent length and females 25–39 mm (0.98–1.54 in). Dorsal colouration is variable. Skin on the dorsum is warty, bearing small tubercles with scattered larger tubercles. This species lacks maxillary and
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are known to be in behavioral isolation. Females prefer conspecific chorus calls to calls from other species, a factor leading to their evolution of reproductive isolation. Despite this, a few instances have been found involving reproduction between heterospecifics. This has led to hybrid
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tadpoles, increasing their mortality and iltuimately contributing to the decrease of anuran populations in the area. With the increasing number of rainbow trout farms in the area, rainbow trout are a growing potential threat to nearby anuran species.
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lead to reduced fertilization rates and overall decrease in fertility. This has been attributed to high variation in chromosome structure, banding pattern, and length between the different species creating unstable karyotypes in future progeny.
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have been used in conservation studies for the anuran population in the Andes. They are potentially threatened by the invasive species of rainbow trout that has infested the water of the Ecuadorian Andes. Rainbow trout serve as a vector for
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discriminate against certain mating calls from foreign populations and will recognize calls from specific locations. Such behavioral isolation of the species likely led to speciation. The genetic variation between different
589:. The Ecuadorian forests have lost almost 60% of their habitats due to deforestation. There have also been many legal and illegal mining and logging activities that further habitat loss. This is a threat not only to 476:
were observed feeding on termites in a semicircular formation. This is one of the few examples of group feeding seen in herpetofauna in the region, which tend to feed on leaf litters on the rainforest floor.
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evidence of behavioral isolation in this species. This is important for understanding genetic drift, sexual selection, and speciations in the Amazon where genetic drift is so high. The rapid speciation of
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tadpoles also have a vent tube that is attached to the ventral fin of the body. Their tails are approximately 60% of their entire body length with a narrowly rounded tip. A distinguishing characteristic
275:. Taxonomy and classification of this species is constantly changing due to the continual evolution of behavioral isolation and rapid speciation in the region. There are also records from the 516:
populations there has also been divergence in mating call patterns in geographically isolated regions. In three geographically isolated regions in Ecuador, mating calls of
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Funk, W. C.; Cannatella, D. C.; Ryan, M. J. (2009). "Genetic divergence is more tightly related to call variation than landscape features in the Amazonian frogs
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has general karyotype differences among different species making fertilization and development less likely to succeed. In fact, fertilization crosses with
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were considered to be distinct species, however morphological analyses of these frogs revealed that they were conspecifics and synonymous species.  
492:. The male call consists of a prefix and a "whine" component, and, in some populations only, a third "squawk" component. Eggs are laid in foam nests. 1380: 1359: 1406: 1268: 1206:
Martín-Torrijos, Laura; Sandoval-Sierra, Jose Vladimir; Muñoz, Jesús; Diéguez-Uribeondo, Javier; Bosch, Jaime; Guayasamin, Juan M. (2016-01-01).
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also has terminal phalanges that are T-shaped and two salivary glands known as parotoid glands that are generally visible. The hands and feet of
917:"Cytogenetic contributions for the study of the Amazonian Engystomops (Anura; Leiuperidae) assessed in the light of phylogenetic relationships" 799:
Funk, W. C.; Angulo, A.; Caldwell, J. P.; Ryan, M. J.; Cannatella, D. C. (2008). "Comparison of morphology and calls of two cryptic species of
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frogs and has been used for comparative karyotypic analysis with other frog species in the area. Its karyotype is unique compared to other
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Powell, Randy L.; Eversole, Cord B.; Lizarro, Dennis; Crocker, Ashton V.; CalderĂłn Vaca, Gonzalo; Surovic, Elizabeth A. (2020-09-11).
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populations also add a suffix to the end of the whine that occurs at a higher frequency compared to the rest of the call. Within
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species is also characterized by variations within karyotypes with different banding patterns as well as clade divergence.
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These names are routinely exchanged making it hard to characterize differences among different species. Previously,
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is localized to a comparatively small region, such habitat loss could be especially devastating for this species.
1437: 852:"Larval morphology of Amazonia foam-nesting frogs of the genus Engystomops (Anura: Leptodactylidae: Leiuperinae)" 284: 1138:"Mating patterns and post-mating isolation in three cryptic species of the Engystomops petersi species complex" 472:
This species has been observed to feed in groups in some circumstances. In a herpetological study in Bolivia,
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females display preferential mate selection towards males with conspecific calls. The characteristic call of
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specification with minimal phenotypic differences between frogs in close geographic proximity. However,
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and was found to be its own species located in northern Peru and Ecuador. Puyo, Ecuador is a hub for
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Targueta, C. P.; Rivera, M.; Souza, M. B.; Recco-Pimentel, S. M.; Lourenço, L. B. (2010-03-01).
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vary in frequency in different regions, serving as likely evidence for further speciation of
1463: 1237: 1227: 1175: 1157: 1101: 1043: 990: 936: 864: 812: 762: 712: 637: 1424: 1090:"Mate choice and courtship signal differentiation promotes speciation in an Amazonian frog" 1445: 258: 239: 138: 851: 463: 1223: 1153: 932: 1180: 1137: 978:"Feeding Habits of Engystomops pustulatus (Anura: Leptodactylidae) in Western Ecuador" 849:
do Nascimento, Filipe A. C.; de Sá, Rafael O.; Garcia, Paulo C. de A. (October 2022).
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makes it a good subject for analysis of evolutionary patterns in these environments.
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Trillo, Paula A.; Narvaez, Andrea E.; Ron, Santiago R.; Hoke, Kim L. (2017-04-07).
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species in the area and specifically diverges from the southwestern clade known as
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of these two species seems to have been driven by behavioural isolation related to
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Sexual selection has been thought to play a role in evolutionary speciation of
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which has a larger diet breadth compared to the specialized diet of the
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species is the presence of prominent elliptical paravertebral glands.
276: 250: 1398: 816: 461: diet consists exclusively of termites. This is in contrast to 397: 98: 1288: 766: 1263: 1261: 356:
has been thoroughly studied and compared to other members of the
1208:"Rainbow trout (Oncorhynchus mykiss) threaten Andean amphibians" 674:
Amphibian Species of the World: an Online Reference. Version 6.0
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is part of the family Leptodactylid. Previously, the genus
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is a common species that inhabits primary and secondary
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Narváez, Andrea E.; Ron, Santiago R. (December 2013).
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that have not yet been allocated to either species.
1301: 976: 850: 748: 593:but all other biodiversity in the region. Since 307:was grouped in with other Amazonian genera like 910: 908: 906: 904: 902: 577:which can effectively transmit this disease to 1131: 1129: 1127: 1125: 1083: 1081: 1079: 1077: 1075: 970: 968: 794: 792: 643:10.2305/IUCN.UK.2018-1.RLTS.T57270A85893490.en 1022: 1020: 413:makes up the northwestern clade of the genus 8: 1088:Guerra, MĂłnica A.; Ron, Santiago R. (2008). 742: 740: 738: 736: 734: 618:IUCN SSC Amphibian Specialist Group (2018). 1289: 50: 31: 20: 1241: 1231: 1179: 1161: 1105: 1047: 940: 641: 585:Habitat loss is also a major concern for 605: 317:Eupemphix paraensis, Eupemphix schereri 257:. It is morphologically similar to its 983:South American Journal of Herpetology 921:Molecular Phylogenetics and Evolution 429:located in southern Peru and Brazil. 7: 676:. American Museum of Natural History 1497:IUCN Red List least concern species 629:IUCN Red List of Threatened Species 508:after the prefix. In certain areas 488:breeding period coincides with the 389:Habitat and Distribution Speciation 14: 717:10.1111/j.1420-9101.2009.01795.x 75: 705:Journal of Evolutionary Biology 496:Mating Calls and Female Choice 1: 1233:10.1080/23766808.2016.1151133 1527:Amphibians described in 1872 1163:10.1371/journal.pone.0174743 433:Genetic Population Structure 204:(JimĂ©nez de la Espada, 1872) 1273:Mongabay Environmental News 942:10.1016/j.ympev.2009.10.018 670:JimĂ©nez de la Espada, 1872" 1543: 287:characteristics more than 187:JimĂ©nez de la Espada, 1872 995:10.2994/SAJH-D-13-00012.1 664:Frost, Darrel R. (2014). 373:larvae compared to other 352:The larval morphology of 199: 192: 177: 170: 72:Scientific classification 70: 48: 39: 30: 23: 1212:Neotropical Biodiversity 565:Conservation and Threats 803:(Anura: Leiuperidae)". 747:Lynch, John D. (1970). 1512:Amphibians of Colombia 464:Engystompos pustulosus 1517:Amphibians of Ecuador 1107:10.1093/beheco/arn098 857:Journal of Morphology 636:: e.T57270A85893490. 264:Engystomops freibergi 575:Saprolegnia diclina, 335:premaxillary teeth. 289:geographic isolation 16:Species of amphibian 1507:Fauna of the Amazon 1360:Engystomops-petersi 1333:Engystomops petersi 1303:Engystomops petersi 1224:2016NeBio...2...26M 1154:2017PLoSO..1274743T 933:2010MolPE..54..709T 697:Physalaemus petersi 668:Engystomops petersi 622:Engystomops petersi 419:Engystomops petersi 411:Engystomops petersi 394:Engystomops petersi 332:Engystomops petersi 321:Engystomops petersi 273:Engystomops petersi 227:Engystomops petersi 207:Eupemphix paraensis 202:Physalaemus petersi 181:Engystomops petersi 42:Conservation status 25:Engystomops petersi 1094:Behavioral Ecology 1049:10.15560/16.5.1143 869:10.1002/jmor.21503 380:The coloration of 234:) is a species of 232:Peters' dwarf frog 214:Eupemphix schereri 1484: 1483: 1459:Open Tree of Life 1295:Taxon identifiers 863:(10): 1299–1317. 540:Genetic Diversity 348:Larval Morphology 242:. It is found in 223: 222: 218: 211: 65: 1534: 1477: 1476: 1467: 1466: 1454: 1453: 1441: 1440: 1428: 1427: 1415: 1414: 1402: 1401: 1389: 1388: 1376: 1375: 1363: 1362: 1350: 1349: 1337: 1336: 1335: 1322: 1321: 1320: 1290: 1284: 1283: 1281: 1280: 1265: 1256: 1255: 1245: 1235: 1203: 1194: 1193: 1183: 1165: 1133: 1120: 1119: 1109: 1100:(6): 1128–1135. 1085: 1070: 1069: 1051: 1042:(5): 1143–1147. 1033: 1024: 1015: 1014: 980: 972: 963: 962: 944: 912: 897: 896: 854: 846: 829: 828: 817:10.1655/08-019.1 796: 787: 786: 752: 744: 729: 728: 711:(9): 1839–1853. 692: 686: 685: 683: 681: 661: 655: 654: 652: 650: 645: 615: 454:Feeding Behavior 216: 209: 183: 80: 79: 59: 54: 53: 35: 21: 1542: 1541: 1537: 1536: 1535: 1533: 1532: 1531: 1487: 1486: 1485: 1480: 1472: 1470: 1462: 1457: 1449: 1446:Observation.org 1444: 1436: 1431: 1423: 1418: 1410: 1405: 1397: 1392: 1384: 1379: 1371: 1366: 1358: 1353: 1345: 1340: 1331: 1330: 1325: 1316: 1315: 1310: 1297: 1287: 1278: 1276: 1267: 1266: 1259: 1205: 1204: 1197: 1148:(4): e0174743. 1135: 1134: 1123: 1087: 1086: 1073: 1031: 1026: 1025: 1018: 974: 973: 966: 914: 913: 900: 848: 847: 832: 798: 797: 790: 767:10.2307/1442276 746: 745: 732: 694: 693: 689: 679: 677: 663: 662: 658: 648: 646: 617: 616: 607: 603: 567: 542: 498: 483: 456: 435: 391: 350: 329: 297: 259:sibling species 240:Leptodactylidae 212: 205: 188: 185: 179: 166: 163:E. petersi 139:Leptodactylidae 74: 66: 55: 51: 44: 17: 12: 11: 5: 1540: 1538: 1530: 1529: 1524: 1519: 1514: 1509: 1504: 1499: 1489: 1488: 1482: 1481: 1479: 1478: 1468: 1455: 1442: 1429: 1416: 1403: 1390: 1377: 1364: 1351: 1338: 1323: 1307: 1305: 1299: 1298: 1293: 1286: 1285: 1257: 1195: 1121: 1071: 1016: 989:(3): 161–167. 964: 927:(3): 709–725. 898: 830: 811:(3): 290–304. 788: 761:(3): 488–496. 730: 687: 656: 604: 602: 599: 566: 563: 541: 538: 497: 494: 482: 479: 455: 452: 434: 431: 390: 387: 349: 346: 328: 325: 296: 293: 269:junior synonym 238:in the family 230:(common name: 221: 220: 197: 196: 190: 189: 186: 175: 174: 168: 167: 160: 158: 154: 153: 146: 142: 141: 136: 132: 131: 126: 122: 121: 116: 112: 111: 106: 102: 101: 96: 92: 91: 86: 82: 81: 68: 67: 49: 46: 45: 40: 37: 36: 28: 27: 15: 13: 10: 9: 6: 4: 3: 2: 1539: 1528: 1525: 1523: 1522:Frogs of Peru 1520: 1518: 1515: 1513: 1510: 1508: 1505: 1503: 1500: 1498: 1495: 1494: 1492: 1475: 1469: 1465: 1460: 1456: 1452: 1447: 1443: 1439: 1434: 1430: 1426: 1421: 1417: 1413: 1408: 1404: 1400: 1395: 1391: 1387: 1382: 1378: 1374: 1369: 1365: 1361: 1356: 1352: 1348: 1343: 1339: 1334: 1328: 1324: 1319: 1313: 1309: 1308: 1306: 1304: 1300: 1296: 1291: 1274: 1270: 1264: 1262: 1258: 1253: 1249: 1244: 1239: 1234: 1229: 1225: 1221: 1217: 1213: 1209: 1202: 1200: 1196: 1191: 1187: 1182: 1177: 1173: 1169: 1164: 1159: 1155: 1151: 1147: 1143: 1139: 1132: 1130: 1128: 1126: 1122: 1117: 1113: 1108: 1103: 1099: 1095: 1091: 1084: 1082: 1080: 1078: 1076: 1072: 1067: 1063: 1059: 1055: 1050: 1045: 1041: 1037: 1030: 1023: 1021: 1017: 1012: 1008: 1004: 1000: 996: 992: 988: 984: 979: 971: 969: 965: 960: 956: 952: 948: 943: 938: 934: 930: 926: 922: 918: 911: 909: 907: 905: 903: 899: 894: 890: 886: 882: 878: 874: 870: 866: 862: 858: 853: 845: 843: 841: 839: 837: 835: 831: 826: 822: 818: 814: 810: 806: 805:Herpetologica 802: 795: 793: 789: 784: 780: 776: 772: 768: 764: 760: 756: 751: 743: 741: 739: 737: 735: 731: 726: 722: 718: 714: 710: 706: 702: 698: 691: 688: 675: 671: 669: 660: 657: 644: 639: 635: 631: 630: 625: 623: 614: 612: 610: 606: 600: 598: 596: 592: 588: 583: 580: 576: 571: 564: 562: 559: 555: 551: 546: 539: 537: 535: 530: 525: 523: 519: 515: 511: 506: 502: 495: 493: 491: 487: 480: 478: 475: 471: 467: 465: 460: 453: 451: 449: 444: 440: 432: 430: 428: 424: 420: 416: 412: 407: 403: 399: 395: 388: 386: 383: 378: 376: 372: 367: 363: 359: 355: 347: 345: 342: 338: 333: 326: 324: 322: 318: 314: 310: 306: 302: 294: 292: 290: 286: 282: 278: 274: 270: 266: 265: 260: 256: 252: 248: 245: 241: 237: 233: 229: 228: 219: 215: 208: 203: 198: 195: 191: 184: 182: 176: 173: 172:Binomial name 169: 165: 164: 159: 156: 155: 152: 151: 147: 144: 143: 140: 137: 134: 133: 130: 127: 124: 123: 120: 117: 114: 113: 110: 107: 104: 103: 100: 97: 94: 93: 90: 87: 84: 83: 78: 73: 69: 63: 58: 57:Least Concern 47: 43: 38: 34: 29: 26: 22: 19: 1302: 1277:. Retrieved 1275:. 2019-09-04 1272: 1243:10261/158670 1218:(1): 26–36. 1215: 1211: 1145: 1141: 1097: 1093: 1039: 1035: 986: 982: 924: 920: 860: 856: 808: 804: 800: 758: 754: 708: 704: 701:P. freibergi 700: 696: 690: 678:. Retrieved 673: 667: 659: 647:. Retrieved 633: 627: 621: 594: 590: 586: 584: 578: 574: 569: 568: 557: 553: 549: 544: 543: 533: 528: 526: 524:over time. 521: 517: 513: 509: 504: 500: 499: 490:rainy season 486:E. petersi's 485: 484: 481:Reproduction 473: 469: 462: 458: 457: 447: 442: 438: 436: 427:E. freibergi 426: 422: 418: 414: 410: 405: 402:forest edges 393: 392: 381: 379: 374: 370: 365: 361: 357: 353: 351: 340: 336: 331: 330: 320: 316: 313:Physalaemus. 312: 308: 304: 300: 298: 272: 262: 231: 226: 225: 224: 213: 210:MĂĽller, 1923 206: 201: 200: 180: 178: 162: 161: 149: 24: 18: 1502:Engystomops 1394:iNaturalist 1342:AmphibiaWeb 1327:Wikispecies 801:Physalaemus 649:17 November 470:E. petersi. 448:Engystomops 439:Engystomops 423:Engystomops 415:Engystomops 406:Engystomops 375:Engystomops 358:Engystomops 327:Description 305:Engystomops 301:Engystomops 217:Myers, 1942 150:Engystomops 1491:Categories 1279:2022-11-09 1036:Check List 601:References 595:E. petersi 591:E. petersi 587:E. petersi 579:E. petersi 570:E. petersi 550:E. petersi 545:E. petersi 534:E. petersi 529:E. petersi 522:E. petersi 518:E. petersi 514:E. petersi 510:E. petersi 505:E. petersi 501:E. petersi 474:E. petersi 459:E. petersi 443:E. petersi 409:the area. 382:E. petersi 371:E. petersi 366:E. petersi 362:E. petersi 354:E. petersi 341:E. petersi 337:E. petersi 299:The genus 281:Divergence 1172:1932-6203 1116:1465-7279 1066:225242938 1058:1809-127X 1003:1808-9798 951:1055-7903 893:251592075 877:0362-2525 775:0045-8511 554:E. magnus 441:. Female 309:Eupemphix 285:male call 244:Amazonian 157:Species: 95:Kingdom: 89:Eukaryota 1318:Q4668325 1312:Wikidata 1252:49732292 1190:28388628 1142:PLOS ONE 1011:86350285 959:19861165 885:35971644 825:40767898 725:19583696 558:E. selva 369:of  295:Taxonomy 247:Colombia 194:Synonyms 135:Family: 119:Amphibia 109:Chordata 105:Phylum: 99:Animalia 85:Domain: 62:IUCN 3.1 1474:5957125 1386:2423489 1220:Bibcode 1181:5384746 1150:Bibcode 929:Bibcode 783:1442276 680:1 March 527:Female 398:forests 360:genus. 277:Guianas 251:Ecuador 145:Genus: 125:Order: 115:Class: 60: ( 1471:uBio: 1464:262680 1451:954704 1412:774695 1399:135077 1373:130086 1250:  1188:  1178:  1170:  1114:  1064:  1056:  1009:  1001:  957:  949:  891:  883:  875:  823:  781:  773:  755:Copeia 723:  319:, and 253:, and 1438:76064 1425:57270 1248:S2CID 1062:S2CID 1032:(PDF) 1007:S2CID 889:S2CID 821:S2CID 779:JSTOR 129:Anura 1433:NCBI 1420:IUCN 1407:ITIS 1381:GBIF 1347:3412 1186:PMID 1168:ISSN 1112:ISSN 1054:ISSN 999:ISSN 955:PMID 947:ISSN 881:PMID 873:ISSN 771:ISSN 759:1970 721:PMID 699:and 682:2014 651:2021 634:2018 556:and 400:and 311:and 255:Peru 236:frog 1368:EoL 1355:ASW 1238:hdl 1228:doi 1176:PMC 1158:doi 1102:doi 1044:doi 991:doi 937:doi 865:doi 861:283 813:doi 763:doi 713:doi 703:". 638:doi 271:of 1493:: 1461:: 1448:: 1435:: 1422:: 1409:: 1396:: 1383:: 1370:: 1357:: 1344:: 1329:: 1314:: 1271:. 1260:^ 1246:. 1236:. 1226:. 1214:. 1210:. 1198:^ 1184:. 1174:. 1166:. 1156:. 1146:12 1144:. 1140:. 1124:^ 1110:. 1098:19 1096:. 1092:. 1074:^ 1060:. 1052:. 1040:16 1038:. 1034:. 1019:^ 1005:. 997:. 985:. 981:. 967:^ 953:. 945:. 935:. 925:54 923:. 919:. 901:^ 887:. 879:. 871:. 859:. 855:. 833:^ 819:. 809:64 807:. 791:^ 777:. 769:. 757:. 753:. 733:^ 719:. 709:22 707:. 672:. 632:. 626:. 608:^ 291:. 261:, 249:, 1282:. 1254:. 1240:: 1230:: 1222:: 1216:2 1192:. 1160:: 1152:: 1118:. 1104:: 1068:. 1046:: 1013:. 993:: 987:8 961:. 939:: 931:: 895:. 867:: 827:. 815:: 785:. 765:: 727:. 715:: 684:. 666:" 653:. 640:: 624:" 620:" 466:, 64:)

Index


Conservation status
Least Concern
IUCN 3.1
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Amphibia
Anura
Leptodactylidae
Engystomops
Binomial name
Synonyms
frog
Leptodactylidae
Amazonian
Colombia
Ecuador
Peru
sibling species
Engystomops freibergi
junior synonym
Guianas
Divergence
male call
geographic isolation
forests
forest edges

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