Table 2 Frequencies of homo- and heteroplasmic specimens as determined by detecting distinct mitotypes

From: Evolutionary implications of discordant clines across the Baltic Mytilus hybrid zone (Mytilus edulis and Mytilus trossulus)

Population

Sex

N

Mitotype frequencies

Male vs

   

Homo- plasmy

Heteroplasmy

female heteroplasmy (P-value)

   

F E

F E /F E a

F E /M E

F E /M m

 

Helgoland

M

9

  

1.00

 

<0.0001

 

F

10

1.00

    

Tjärnö

M

10

  

1.00

 

<0.0001

 

F

10

1.00

    

Ã…rhus

M

2

  

1.00

 

<0.001

 

F

2

1.00

    

Kiel

M

8

  

1.00

 

<0.0001

 

F

5

1.00

    

Warnemünde

M

10

 

0.1

0.9

 

<0.0001

 

F

11

1.00

    

Hel

M

10

0.20

0.30

0.20

0.30

0.0004

 

F

9

1.00

    

Askö

M

9

0.44

0.11

 

0.44

0.001

 

F

6

1.00

    
  1. FE-mitotype: maternally transmitted M. edulis F genome; ME-mitotype: paternally transmitted M. edulis M genome; Mm-mitotype: paternally transmitted masculinized F genome of M. edulis phylogenetic origin. The null hypothesis of no differences in the incidence of heteroplasmy among sexes was tested with a 2 × 2 contingency table following Roff and Bentzen (1989). M: male; F: female; N: total number of specimens.
  2. aIndividuals that displayed two FE-mitotypes that differed in their RFLP pattern.
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