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Table 1 Review of available data on 2n, karyotypes and sex systems in the genus Clarias

From: Genomic organization of repetitive DNAs highlights chromosomal evolution in the genus Clarias (Clariidae, Siluriformes)

Species 2n NF Karyotype Sex system Locality Reference
C. albopunctatus 48 75 4 m + 23sm + 21a ZW Nigeria [19]
C. albopunctatus 48 74 4 m + 22sm + 22a ZZ Nigeria [19]
C. anguillaris 56 91 8 m + 27sm + 21a ZW Nigeria [19]
C. anguillaris 56 90 8 m + 26sm + 22a ZZ Nigeria [19]
C. anguillaris 48 27 m + 10sm + 3st + 8 t Nigeria [53]
C. anguillaris 56 33 m + 12sm + 2st + 9 t Nigeria [53]
C. batrachus 100 111 4 m + 7sm + 77a + 12mc XY Thailand [54]
C. batrachus 56   China [55]
C. batrachus 100 110 4 m + 6sm + 78a + 12mc XX Thailand [54]
C. batrachus 50 88 16 m + 8sm + 14st + 12a   India [56]
C. batrachus 50 96 18 m + 20sm + 8st + 4a   India [57]
C. batrachus 54     [58]
C. batrachus 50 89 16 m + 11sm + 5st + 1at ZW India [59]
C. batrachus 50 88 16 m + 10sm + 6st + 18a ZZ India [59]
C. batrachus 51 89 16 m + 11sm + 5st + 18a + 1B-chromosome ZW India [59]
C. batrachus 51 88 16 m + 10sm + 6st + 18a + 1B-chromosome ZZ India [59]
C. batrachus 50 96 12 m + 18sm + 10st + 10 t India [60]
C. batrachus 50 90 11 m + 7sm + 2st + 34a Malaysia [61]
C. batrachus 54 74 12 m + 18sm + 10st + 14 t India [62]
C. batrachus 104 2 m + 4sm + 98st/a - Thailand Present study
C. camerunensis 54 Africa [63]
C. camerunensis 56 22 m + 20sm + 9st + 5 t - Nigeria [53]
C. ebriensis 50 Africa [63]
C. ebriensis 48 77 6 m + 23sm + 19a ZW Nigeria [19]
C. ebriensis 48 76 6 m + 22sm + 20a ZZ Nigeria [19]
C. fuscus 56 106 18 m + 24sm + 8st + 6a XX China [54]
C. fuscus 56 106 19 m + 23sm + 8st + 6a XY China [54]
C. fuscus 56 106 20 m + 22sm + 8st + 6a XX China [64]
C. fuscus 56 106 20 m + 22sm + 8st + 6a XY China [64]
C. fuscus 56 102 18 m + 14sm + 14st + 10a XX,XY China [65]
C. fuscus 56 88 32 m/sm + 24st/a Japan [63]
C. gariepinus 56 89 8 m + 25sm + 23a ZW Africa, Israel [37, 66, 67]
C. gariepinus 56 88 8 m + 24sm + 24a ZZ Africa, Israel [37, 58, 67]
C. gariepinus 56 87 14 m + 17sm + 25a ZW Egypt [60]
C. gariepinus 56 88 14 m + 18sm + 24a ZZ Egypt [60]
C. gariepinus 56 102 20 m + 16sm + 10st + 10a India [60]
C. gariepinus 56 89 8 m + 25sm + 23a ZW Nigeria [19]
C. gariepinus 56 88 8 m + 24sm + 24a ZZ Nigeria [19]
C. gariepinus 56 96 21 m + 14sm + 5st + 16a Malaysia [61]
C. gariepinus 56 25 m + 14sm + 14st + 3 t Nigeria [53]
C. gariepinus 56 100 28 m + 6sm + 10a + 12 t Turkey [68]
C. gariepinus 56 100 24 m + 10sm + 10a + 12 t Turkey [68]
C. gariepinus 54 98 34 m + 10sm + 10 t Nigeria [69]
C. gariepinus 56 102 6 m + 12sm + 28st + 10a Nigeria [70]
C. gariepinus 56 98 30 m + 6sm + 6st + 14 t Thailand [71]
C. gariepinus 56 110 18 m + 20sm + 16st + 2a Thailand Present study
C. jaensis 54 22 m + 12sm + 5st + 15 t Nigeria [53]
C. macrocephalus 54 104 24 m + 20sm + 6st + 4a   Thailand [54]
C. macrocephalus 54 98 22 m + 18sm + 4st + 10a Malaysia [61]
C. macrocephalus 54 104 22 m + 16sm + 12st + 4a Thailand Present study
C. macromystax 49 27 m + 10sm + 11st + 1 t Nigeria [53]
C. platycephalus 54   Africa [63]
C. pachynema 66 30 m + 10sm + 16st + 10 t Nigeria [53]