Table 1

Karyomorphs previously identified in Hoplias malabaricus according to Bertollo et al. (2000).


Chromosome number

Sex Chromosomes

Geographic occurrence

Group I: first chromosome pairs of similar sizes

Karyomorph A

2n = 42


Northen to southern Brazil, Uruguay and northen Argentina

Karyomorph B

2n = 42


Vale do Rio Doce (Minas Gerais State) and Iguaçú River (Paraná State, Brazil)

Karyomorph C

2n = 40


Northen Brazil to northen Argentina

Karyomorph D

Female - 2n = 40/Male - 2n = 39


Upper Paraná hydrographic basin, Brazil

Group II: first chromosome pairs with clearly distinct sizes

Karyomorph E

2n = 42


Trombetas River (Paraná State, Brazil)

Karyomorph F

2n = 40


Surinam to southeastern Brazil

Karyomorph G

Female - 2n = 40/Male - 2n = 41


Amazonian Rivers, Brazil

Cioffi et al. BMC Genetics 2009 10:34   doi:10.1186/1471-2156-10-34

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