Table 1 Karyotypic data of the four groups (A–D) of E. erythrinus

From: Chromosome evolution in the erythrinid fish, Erythrinus erythrinus (Teleostei: Characiformes)

Samples

F

M

N

2n

Sex

Chromosome formula

Micro

A (Birigui – SP)

2

2

50

54

—

6 M+2 ST+46 A

0–4

A (Penápolis – SP)

5

3

67

54

—

6M+2 ST+46 A

—

A (Resistência – AR)

8

9

364

54

—

6M+2 ST+46 A

—

B (Guaíra – PR)

3

5

85

54 (F)

X1X1X2X2

6M+2 ST+46 A

0–3

    

53 (M)

X1X2Y

7M+2 ST+44 A

 

C (Manaus – AM)

6

5

405

52 (F)

X1X1X2X2

6M+2 SM+6 ST+38 A

—

    

51 (M)

X1X2Y

7M+2 SM+6 ST+36 A

 

D (Natal – RN)

7

6

110

52 (F)

X1X1X2X2

4M+2 SM+2 ST+44 A

—

    

51 (M)

X1X2Y

5M+2 SM+2 ST+42 A

 
  1. AR=Argentina; SP=São Paulo; PR=Paraná; RN=Rio Grande do Norte; AM=Amazonas Brazilian states; F=females; M=males; N=number of metaphases analyzed; 2n=diploid number; sex=sex chromosome system; micro=number of microchromosomes observed; M=metacentric, SM=submetacentric; ST=subtelocentric; A=acrocentric chromosomes.
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