Biology_of_Mustelids_Vol_1.pdf

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TABLE 5. Differences between measurements of skulls of male and female
Turukhan stoats (M. erminea ognevi Yurg.) (specimens from the
right bank of Taz~vskaya Guba, Gydanskii Peninsula, the banks
of the Enisei River and the left bank of the Khatanga River)
Males
Females
No. Dimensions (533 skulls) (252 skulls)
range mean range mean
1 Basilar length 34.7-45.3 41.04 33.4-42.3 36.73
2 Condylobasallength 38.6-49.8 45.64 37.8-46.7 40.82
3 Length of hard palate 14.6-20.8 18.00 14.0-18.3 15.78
4 Length of interpterygoid fossa 5.3- 8.2 6.57 5.2-7.2 5.89
5 Length from foramen magnum to
hard palate 20.1-25.9 23.08 19.3-24.0 20.96
6 Length of tympanic bulla 13.0-16.5 14.67 11.5-15.2 13.34
7 Length of upper row of teeth 10.3-13.8 12.30 9.7-12.2 10.87
8 Length of lower row of teeth 11.8-17.4 15.52 12.1-15.9 13.60
9 Length of upper canine tooth 3.6- 5.3 4.50 3.4- 4.9 4.03
10 Length of upper molar tooth 1.1- 2.5 1.76 0.9- 1.8 1.43
11 Length of lower fanina tooth 4.1- 6.2 5.18 4.0- 5.5 4.61
12 Rostral width 7.3-10.9 9.39 7.0-10.0 7.97
13 Interorbital width 9.1-12.8 11.05 8.3-11.8 9.55
14 Width between ends of supraorbital
processes 11.0-16.1 13.28 9.5-14.2 11.61
15 Postorbital width 8.9-12.5 10.63 8.5-11.7 9.99
16 Zygomatic width 20.0-29.2 25.54 19.4-26.9 22.13
17 Mastoid width 17.5-24.9 22.20 18.0-22.9 19.66
18 Auricular width 18.6-23.7 21.10 17.4-21.8 19.34
19 Width of hard palate 11.5-15.8 13.97 10.8-14.8 12.26
20 Width of tympanic bulla 6.7- 9.4 8.01 6.1- 8.5 7.05
21 Width of nasal aperture 4.0- 5.6 4.79 3.4- 5.2 4.07
22 Width of foramen magnum 6.5- 8.9 7.98 6.5- 8.5 7.39
23 Width of infraorbital foramen 1.7-4.1 2.96 1.7- 2.6 2.73
24 Greatest width of upper molar
tooth 2.7- 4.5 3.60 2.8- 3.8 3.11
25 Diameter of upper canine tooth 1.4- 2.5 1.88 1.1- 2.0 1.50
26 Diameter of lower canine tooth 1.3- 3.0 2.20 1.3- 2.7 1.83
27 Facial [rostral?] height of
skull 9.5-14.1 12.26 8.9-12.9 10.89
28 Height of skull in region of
tympanic bullae 14.6-20.4 17.61 12.1-18.9 15.51
29 Occipital height 9.6-13.8 11.69 8.6-12.5 10.45
30 Height of nasal aperture 5.0- 7.3 6.21 3.7- 6.7 5.37
31 Height of foramen magnum 5.1- 7.2 6.17 4.8- 6.6 5.65
32 Height of upper canine tooth 3.8- 7.5 5.66 3.5- 6.8 4.61
33 Height of lower canine tooth 3.1- 6.3 4.89 2.8- 5.7 3.96
skull certainly occurs. From all the structural features taken together it
is possible to identify the sex of a given specimen.
Incidentally, the
considerable difference in weight of the skull must be mentioned.
According
to V.A. Popov (1947), it is on the average 65% heavier in the male than in
the female stoat.
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