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Table 2 Accuracy of sex determination of Yellow-legged Gulls using measurements or discriminant functions

From: Sex determination based on morphometric measurements in yellow-legged gulls (Larus michahellis) around Istanbul

  

Accuracy of original samples

Variables

Wilks’Lambda

Male

Female

Weight

0.613

78.8% (26/33)

85.2% (23/27)

WL

0.760

81.8% (27/33)

70.4% (19/27)

HL

0.293

93.9% (31/33)

92.6% (25/27)

BL1

0.442

90.6% (30/33)

85.2% (23/27)

BL2

0.563

72.7% (24/33)

70.4% (19/27)

BL3

0.408

90.9% (30/33)

81.5% (22/27)

N

0.626

84.8% (28/33)

77.8% (21/27)

BD1

0.643

75.8% (25/33)

70.4% (19/27)

BD2

0.450

84.8% (28/33)

88.9% (24/27)

Discriminant functions

 D1 = HL*0.264 + BL1*0.061–36.999

0.289

93.9% (31/33)

92.6% (25/27)

 D2 = HL*0.238 + BL3*0.142–36.702

0.278

93.9% (31/33)

92.6% (25/27)

 D3 = HL*0.299 + BD1*0.012–36.744

0.293

93.9% (31/33)

92.6% (25/27)

 D4 = HL*0.238 + BD2*0.419–36.924

0.253

97.0% (32/33)

92.6% (25/27)