253:, it is reasonable to conclude that these animals navigate throughout the whole water column in search of food, rather than limiting their niche to only surface waters or only benthic habitats. Furthermore, this variability in eating behavior lends to the characterization of the driftwood catfishes as omnivorous organisms, since they feed at more than one trophic level. Additionally, this genus may be considered to follow opportunistic feeding behaviors. Opportunistic feeding behaviors are characterized by a varied food selection which ultimately contributes to increased adaptability as animals rely on more than one source of energy. There were no significant differences in feeding habits observed between males and females.
55:
33:
265:
important consideration when determining reproductive season for these individuals. In another study, Fontoura, et al. also examined reproductive details and found that the gonadosomatic index (GSI) values were highest in
November through February. These data correspond to one another in that Fontoura, et al.’s findings fit within the expected reproductive period given by Maia, et al. In terms of fecundity,
320:
fish maintain similar eating habits, regardless of sex or age. Furthermore, the article suggests that one type of parasite, the monogeneans, might lead to increased production and development of mucus on the fish skin, leading to difficulties in respiration for these individuals. Furthermore, in a different study, done by Santos, et al., looked at the parasite
286:
developed in cysts, which would then burst, ultimately leading to the release of the sperm that were housed within. The process of sperm formation occurs in steps. The first form developed is the primary spermatogonia, which is the largest of the cells in the process of spermatogenesis. Following the
276:
was studied in terms of reproductive strategies. Paired testes in males were observed. The testes are composed of two regions: the interstitial region, which is responsible for steroid hormone genesis, and the tubular region, which is responsible for the production of sperm. In their work, Santos, et
319:
individuals host a variety of parasites at somewhat high levels, with about 40.6 parasites found per fish. No significant relationship was concluded between parasitic frequency in respect to sex nor with parasitism in respect to length of fish body. Perhaps this could be interpreted to mean that the
264:
has a reproductive season from
October through March. These reproductive months correspond to species abundance; the highest prevalence of the driftwood catfishes falls from October to March, while they are least abundant from April through December. Maia, et al also found that temperature may be an
298:
have a single flagellum and are characterized by both elongated nuclear and middle section. The elongation of the middle section of the sperm cell was associated with higher levels of mitochondria; this could suggest that the mitochondria were supplying energy to the cell to aid in the transport to
248:
catfishes feed primarily on autochthonous materials in the ecosystem but do consume allochthonous particulate as well. A study by Becker found that the stomach contents of these catfishes varied widely among trophic levels; organisms ranging from fish to crabs to insects. Given this diversity found
287:
formation of the primary spermatogonia, the secondary spermatogonia is developed, then the primary spermatocyte, the secondary spermatocyte, the spermatid, and finally the spermatozoa; there is a decrease in the size of these cells as they are developed throughout the process.
220:. They have been found in South American environments, including Venezuela, Colombia, Peru, Argentina, and several places in Brazil. They have a body pattern that follows bilateral symmetry and reproduce sexually. In terms of sensory systems,
269:
females produce about 1536 oocytes each. Additionally, there was a correlation noticed between female length and number of oocytes; the longer the length of the female, the more oocytes were produced, indicating a positive relationship.
281:
fishes were about 15 cm long, with a whole-body weight of about 81.17 +/- 34.51 grams. The weight of the testes was 9.16 +/- 6.11 grams with an average length of about 35.23 +/- 6.94 mm. The researchers found that sperm of
336:. The parasite apparently took over in such a way as to replace the sarcoplasmic reticulum within the musculature tissue, disrupting the integrtiey of the muscle’s structure. Despite this change in structure to muscle,
1069:
Felicetti, Denise; Haerter, Chrystian A.G.; Baumgärtner, Lucas; Paiz, Leonardo M.; Takagui, Fábio H.; Margarido, Vladimir P.; Blanco, Daniel R.; Feldberg, Eliana; da Silva, Maelin; Lui, Roberto L. (2021).
294:
catfishes reproduce via insemination was gathered from work done by Burns, et al., who studied the ultrastructure of sperm in these animals. They found that the sperm cells of
754:
299:
the female reproductive tract. Furthermore, the presence of other structures, like microtubules, suggest the importance of structural integrity needed to move through fluids.
977:"Ectoparasites as numerical dominant species in parasite community of Trachelyopterus striatulus (Siluriformes: Auchenipteridae) from Guandu River, southeastern Brazil"
1251:
911:"Anatomical and Histological Organization of the Testes of the Inseminating Catfish Trachelyopterus striatulus (Steindachner, 1877) (Siluriformes: Auchenipteridae)"
1072:"A New Variant B Chromosome in Auchenipteridae: The Role of (GATA)n and (TTAGGG)n Sequences in Understanding the Evolution of Supernumeraries in Trachelyopterus"
853:"Defining the reproductive period of freshwater fish species using the Gonadosomatic Index: a proposed protocol applied to ten species of the Patos Lagoon basin"
1277:
1027:"New occurrence of Kudoa orbicularis parasitizing the freshwater catfish Trachelyopterus galeatus (Siluriformes: Auchenipteridae) in the Brazlian Amazon region"
1025:
Santos, Weverton John
Pinheiro dos; Silva, Diehgo Tuloza da; Santos, PatrĂcia de Fátima Saco dos; Matos, Edilson Rodrigues; Hamoy, Igor Guerreiro (July 2019).
224:
have autoliths for hearing and lens eyes for seeing; they also have capabilities of electroreception. The size and appearance of different species within the
1333:
811:
360:, it was determined that both of these species had 58 chromosomes, following a diploid structure. This finding was the same for both males and females.
1225:
1264:
328:. The individuals of the T. galeatus species that were observed for this study were found in MarajĂł Island of northern Brazil. They described the
812:"Diet and reproductive dynamics of Trachelyopterus lucenai (Siluriformes: Auchenipteridae) in subtropical coastal lagoons in southern Brazil"
976:
949:"Sperm and Spermatozeugma Ultrastructure in the Inseminating Catfish, Trachelyopterus lucenai (Ostariophysi: Siluriformes: Auchenipteridae)"
852:
1323:
1290:
1026:
1269:
54:
534:
1186:
548:
404:
1282:
569:
573:
444:
581:
542:
430:
595:
514:
1318:
1113:
851:
Fontoura, Nelson
Ferreira; Ceni, Gianfranco; Braun, Aloisio Sirangelo; Marques, Camilla da Silva (2018-07-16).
616:
528:
500:
458:
486:
376:
41:
718:
694:
610:
394:
1328:
667:
561:
556:
471:
412:
1139:
1191:
587:
909:
Santos, M. L.; Sales, N. G.; Arantes, F. P.; Pessali, T. C.; Bazzoli, N.; Santos, J. E. (August 2014).
1295:
1212:
1177:
463:
422:
143:
126:
520:
436:
601:
506:
184:
49:
755:"Feeding Habits of Trachelyopterus lucenai (Pisces, Auchenipteridae) in Lake GuaĂba, RS, Brazil"
1256:
1199:
1091:
1048:
998:
874:
833:
477:
418:
217:
1083:
1038:
988:
922:
864:
823:
400:
116:
565:
910:
32:
196:
96:
1312:
1109:
777:
492:
993:
828:
315:
focused on these organisms as hosts for parasitic activity. Researchers found that
152:
1204:
1071:
1238:
1171:
450:
382:
1162:
869:
386:
1043:
1095:
1052:
1002:
878:
837:
66:
1156:
1122:
86:
1230:
975:
Mesquita, Rlb.; Azevedo, Rk.; Abdallah, Vd.; Luque, Jl. (August 2011).
948:
170:
106:
1087:
926:
1243:
76:
1133:
213:
810:
Maia, Renata; Artioli, Luiz G. S.; Hartz, Sandra M. (June 2013).
1137:
1217:
643:
348:
When B chromosomes were studied in some species within the
332:
species to appear as pseudocysts in the muscle tissue of
236:. These small catfishes are marketed towards aquariums.
719:"Trachelyopterus insignis • Auchenipteridae • Cat-eLog"
689:
687:
668:"Trachelyopterus albicrux • Auchenipteridae • Cat-eLog"
695:"Trachelyopterus lucenai • Auchenipteridae • Cat-eLog"
228:
genus varies, with sizes ranging from 5.5 inches in
1146:
340:did not exhibit signs of an inflammatory response.
1064:
1062:
970:
968:
966:
1031:Revista Brasileira de Parasitologia Veterinária
748:
746:
744:
742:
740:
738:
1020:
1018:
1016:
1014:
1012:
232:to 7.9 inches in T. insignis to 8.4 inches in
942:
940:
938:
936:
904:
902:
900:
898:
896:
894:
892:
890:
888:
8:
805:
803:
801:
799:
797:
1134:
31:
20:
1042:
992:
868:
827:
638:
636:
634:
371:currently contains 16 described species:
644:"Trachelyopterus - Encyclopedia of Life"
630:
765:(1): 89–90 – via Research Gate.
7:
1334:Taxa named by Achille Valenciennes
257:Reproductive period and strategies
14:
915:Anatomia, Histologia, Embryologia
947:Burns, John (February 8, 2002).
53:
1076:Cytogenetic and Genome Research
994:10.1590/S1519-69842011000400006
959:(1): 173–179 – via JSTOR.
829:10.1590/S1984-46702013000300002
753:Fernando, Becker (June 1998).
1:
782:Discovery of Sound in the Sea
981:Brazilian Journal of Biology
445:Trachelyopterus ceratophysus
582:Trachelyopterus peloichthys
543:Trachelyopterus leopardinus
431:Trachelyopterus brevibarbis
1350:
870:10.1590/1982-0224-20170006
596:Trachelyopterus striatulus
515:Trachelyopterus isacanthus
274:Trachelyopterus striatulus
249:in the stomach content of
1044:10.1590/s1984-29612019047
529:Trachelyopterus lacustris
459:Trachelyopterus coriaceus
190:
183:
176:
169:
160:Trachelyopterus coriaceus
158:
151:
50:Scientific classification
48:
39:
30:
23:
1324:Catfish of South America
1126:. December 2011 version.
1112:; Pauly, Daniel (eds.).
501:Trachelyopterus insignis
487:Trachelyopterus galeatus
377:Trachelyopterus albicrux
324:and its relationship to
42:Trachelyopterus galeatus
857:Neotropical Ichthyology
778:"opportunistic feeding"
611:Trachelyopterus teaguei
557:Trachelyopterus lucenai
472:Trachelyopterus fisheri
395:Trachelyopterus amblops
262:Trachelyopterus lucenai
246:Trachelyopterus lucenai
413:Trachelyopterus analis
723:www.planetcatfish.com
699:www.planetcatfish.com
672:www.planetcatfish.com
311:genus on the species
290:Further support that
352:genus, specifically
307:Research within the
816:Zoologia (Curitiba)
482:(Driftwood catfish)
218:driftwood catfishes
1114:"Species in genus
164:Valenciennes, 1840
1306:
1305:
1140:Taxon identifiers
1088:10.1159/000513107
927:10.1111/ahe.12082
776:Knowlton, Chris.
620:
606:(Singing catfish)
605:
591:
577:
570:J. F. P. da Silva
552:
538:
524:
510:
496:
481:
467:
454:
440:
426:
408:
390:
322:Kudoa orbicularis
205:
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200:
147:
1341:
1299:
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574:E. H. L. Pereira
560:
546:
532:
518:
504:
490:
475:
462:
448:
434:
416:
398:
380:
277:al., found that
240:Feeding and diet
195:
193:Parauchenipterus
142:
58:
57:
35:
21:
1349:
1348:
1344:
1343:
1342:
1340:
1339:
1338:
1319:Auchenipteridae
1309:
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1307:
1302:
1294:
1289:
1281:
1276:
1268:
1263:
1255:
1250:
1242:
1237:
1229:
1224:
1216:
1211:
1203:
1198:
1190:
1185:
1178:Trachelyopterus
1176:
1175:
1170:
1161:
1160:
1155:
1148:Trachelyopterus
1142:
1132:
1131:
1116:Trachelyopterus
1108:
1107:
1103:
1068:
1067:
1060:
1024:
1023:
1010:
974:
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886:
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652:
650:
642:
641:
632:
627:
478:C. H. Eigenmann
423:R. S. Eigenmann
419:C. H. Eigenmann
369:Trachelyopterus
366:
350:Trachelyopterus
346:
309:Trachelyopterus
305:
292:Trachelyopterus
259:
242:
226:Trachelyopterus
222:Trachelypterus’
209:Trachelyopterus
165:
162:
141:
138:Trachelyopterus
127:Auchenipterinae
117:Auchenipteridae
52:
25:Trachelyopterus
17:
16:Genus of fishes
12:
11:
5:
1347:
1345:
1337:
1336:
1331:
1329:Catfish genera
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1321:
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1300:
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1168:
1152:
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1144:
1143:
1138:
1130:
1129:
1110:Froese, Rainer
1101:
1082:(1–2): 70–81.
1058:
1037:(3): 416–424.
1008:
987:(3): 623–627.
962:
932:
921:(4): 310–316.
884:
843:
822:(3): 255–265.
793:
768:
734:
710:
683:
659:
629:
628:
626:
623:
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607:
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511:
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409:
391:
365:
362:
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330:K. orbicularis
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134:
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97:Actinopterygii
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37:
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588:L. P. Schultz
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327:
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318:
317:T. striatulus
314:
313:T. striatulus
310:
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284:T. striatulus
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34:
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26:
22:
19:
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1030:
984:
980:
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952:
918:
914:
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856:
846:
819:
815:
785:. Retrieved
781:
771:
762:
758:
726:. Retrieved
722:
713:
702:. Retrieved
698:
675:. Retrieved
671:
662:
651:. Retrieved
647:
609:
602:Steindachner
594:
580:
555:
541:
527:
513:
507:Steindachner
499:
485:
470:
464:Valenciennes
457:
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429:
411:
393:
375:
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192:
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177:
159:
153:Type species
144:Valenciennes
137:
136:
107:Siluriformes
40:
24:
18:
1239:iNaturalist
1172:Wikispecies
759:BiociĂŞncias
354:T. galeatus
338:T. galeatus
334:T. galeatus
326:T. galeatus
279:T. striatus
230:T. albicrux
123:Subfamily:
1313:Categories
787:2023-05-08
728:2023-05-08
704:2023-05-08
677:2023-05-08
653:2023-05-08
625:References
617:Devincenzi
562:Bertoletti
405:Hildebrand
358:T. porosus
296:T. lucenai
267:T. lucenai
251:T. lucenai
234:T. lucenai
178:See text.
1096:1424-8581
1053:1984-2961
1003:1519-6984
879:1982-0224
838:1984-4689
73:Kingdom:
67:Eukaryota
1163:Q5021285
1157:Wikidata
1123:FishBase
493:Linnaeus
389:), 1901)
344:Genetics
185:Synonyms
113:Family:
87:Chordata
83:Phylum:
77:Animalia
63:Domain:
1257:1047371
1231:2344659
648:eol.org
619:, 1942)
604:, 1877)
590:, 1944)
551:, 1927)
549:Borodin
537:, 1874)
523:, 1878)
509:, 1878)
495:, 1766)
480:, 1916)
453:, 1858)
439:, 1878)
425:, 1888)
407:, 1913)
383:C. Berg
364:Species
303:Threats
197:Bleeker
171:Species
133:Genus:
103:Order:
93:Class:
1296:271120
1283:238650
1270:639229
1094:
1051:
1001:
953:Copeia
877:
836:
576:, 1995
572:&
535:LĂĽtken
466:, 1840
421:&
403:&
199:, 1862
146:, 1840
1291:WoRMS
1252:IRMNG
1244:92575
1218:25270
1192:97669
863:(2).
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999:ISSN
957:2002
875:ISSN
834:ISSN
521:Cope
451:Kner
437:Cope
401:Meek
356:and
244:The
1213:EoL
1200:CoL
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