Table 4

Phenotypic differences between bank voles with different mtDNA types.

All populations

Sympatric population


mitochondrial DNA type of

mitochondrial DNA type of

Myodes rutilus

M. glareolus

mtDNA

lat.

Myodes rutilus

M. glareolus

mtDNA


Traits

N

mean(SD)

N

mean(SD)

p

p

N

mean(SD)

N

mean

p


Females

BM

20

16.7(2.72)

63

19.4(3.84)

.004*

-

8

16.8(2.77)

29

19.7(4.56)

.098

HW

13.2(.370)

13.3(.370)

.163

-

13.1(.395)

13.2(.426)

.317

BMRANOVA

40.1(4.12)

43.7(6.80)

.032

-

39.3(4.16)

44.4(8.47)

.049

BMRANCOVA

42.6(4.86)

42.9(4.73)

-

.445

-.351(1.17)

.097(.928)

.262

Males

BM

37

21.6(4.79)

71

21.9(4.23)

-

.135

8

19.8(4.41)

47

21.4(4.35)

.329

HW

13.4(.450)

13.4(.420)

-

.265

13.2(.522)

13.4(.411)

.189

BMRANOVA

48.6(8.99)

49.0(11.67)

-

.002*

39.4(5.68)

45.1(9.12)

.374

BMRANCOVA

48.9(8.80)

48.9(8.83)

-

.014*

-.124(.761)

.021(1.03)

.705


Variation in body mass (BM, g), head width (HW, mm) and basal metabolic rate (BMR, ml O2 min-1) is presented for bank voles from "all populations" and from Sotkamo "Sympatric population" where mitotypes coexist. Significance of the effects: type of the mtDNA (rutilus vs. glareolus), latitude (lat.) and longitude (insignificant and excluded from table) of population (6 populations) were tested in ANOVA or ANCOVA (for BMR with BM as covariate) models on log transformed traits as dependent variables. Marginal means (and their SDs) for mtDNA types for ANCOVA models were calculated accounting for variation in BM. The insignificant effects (p > 0.1) were hierarchically reduced from the analyses of variances "-" and are not presented in the table. Latitude├Ślongitude interactions affected only males log transformed and residual values of HW (p < 0.045), not included in the table.

* effects significant after implemented Bonferroni correction.

Boraty┼äski et al. BMC Evolutionary Biology 2011 11:355   doi:10.1186/1471-2148-11-355

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