Biology_of_Mustelids_Vol_1.pdf

148.
pine martens exhibit all these features.
Their dimensions are almost
the same as those of skulls of adult martens (19 months and older).
The
basilar length of the skull in yearling males is 77.3 mm
and in adult males
77.6 mm; females 70.9 mm and 71.3 mm respectively. The condylobasal
length is 85.2 mm in yearling males and in adult males 85.3 mm; females
77.9 and 78.3 mm. The facial length is 35.5, 35.9, 32.8, and 32.8 mm
respectively.
The changes in the width across the supraorbital processes,
and postorbital width, reflects the enlargement of the supraorbital
processes, and the reduction in size of the postorbital constriction,
occurring with age.
In males aged 7-12 months the ratio of postorbital
width to the condylobasal length of the skull is 23.8%, and in females 26.0%.
Table 2. Age changes in skull and ~s penis of Caucasian pine martens
Indices (dimensions
in mm, weight in g)
(n)
Males Males Males Males
2 3~ 7-12 19-24
months months months months
(1)
Males Females Females Females
2y7m ca.5 7-12 19m and
and months months older
older
(18 ) (2) (45)
Total skull length
78.5
80.5
87.3
87.5
88.0
79.0 79.0
79.4
Basilar length
68.3
73.0
77 .3
77 .6
78.4
69.6 70.9
71.3
Condylobasal length
76.0
80.4
85.2
85.3
85.8
76.9 77.9
78.3
Rostral width (at
posterior margine of
canines)
Interorbital width
Width across supraorbital
processes
Width of postorbital
constriction
Zygomatic width
Facial length
Mastoid width
Height of cranium at
tympanic bullae
Length of upper row
of teeth
Length of lower row
of teeth
Length of baculum
Weight of baculum
19.2
18.2
23.0
21.8
44.1
26.0
38.8
21.0
21.0
26.5
0.04
16.4
18.2
22.0
21.0
43.3
34.5
37.4
29.4
34.5
35.4
0.08
17.0
21.7
24.6
20.5
47.0
35.5
36.6
32.1
29.7
36.0
40.3
0.17
17.6
20.3
19.0
49.6
35.9
35.9
32.1
36.2
45.4
0.30
17.9
22.3
27.0
19.0
50.9
36.4
36.1
36.2
44.6
0.32
15.5. 15.6
19.1 19.1
21 .8 22.1
20.1 19.2
42.6 43.0
32.0 32.8
36.5 34.7
31 .1 30.1
32.0 32.5
16.8
19.5
18.7
43.7
32.8
35.0
29.5
27.3
32.9