Holarctic Marmots as a factor of Biodiversity.
Rumiantsev V.Yu;, Nikol'skii A.A. & Brandler O.V. eds.,
Abstracts, 3d Conference on Marmots (Cheboksary, Russia, 25-30 August 1997),
Moscow ABF 1997, 216p.,101 (Russian), 144 (English).


THE HAIRES COVER TOPOGRAPHIC VARIABILITY IN SECOND YEAR MARMOT
FROM CAGES BREEDING


O.I. Fedorova, E.M. Koldaeva

Afanasiev' Research Institute of Fur Animals and Rabbits Breeding
Moscow, Russia


The samples of skins (each area was 0.25 sq.sm) from rump, back, withers and side were took from 5 females and 5 males (all marmot were about 2 years old) unsalt-dry skins by standart method (Kuznetsov and Tserevetinov, 1981). The results of investigations showed:
1. The second year marmot both males and females have the most length haires of all types on back and withers and the least - on the rump. The most guard haires width in pivot is on rump and side, and the most haires width in grana is on a back and withers.
2. The different correlation of the pigment tops and light-coloured parts in guard haires colour from different areas of the skins was registered. This cause a variability of haires covers colour. Both males and females have the most long pigment tops and the most narrow light-coloured part on withers. This difference in correlation of these zones make the impression of more dark colour of withers and back.
3. The second year marmots have a sexual dimorphism in haires length (ê>0.999). The sexual differences in haires density and thickness were not recorded.
4. The most haires density is on back and withers (both males and females), the least - on the rump. The individual variability in hair covers density in population of cages marmot allow to hope on the effective selection for the improvement of this practical indication.


Table.
Morphological characterisric of haires in second year marmot >


Characteristics Body areas Females Males
Length of guard hairs, mm Rump 18.7 ± 0.33 19.1 ± 0.19
Back 23.3 ± 0.14 25.4 ± 0.24
Whiters 23.1 ± 0.16 24.6 ± 0.24
Side 21.7 ± 0.20 23.1 ± 0.16
Length of under fur, mmRump 14.0 ± 0.12 14.2 ± 0.14
Back 16.3 ± 0.12 17.2 ± 0.16
Whiters 15.2 ± 0.10 16.2 ± 0.12
Side 15.1 ± 0.10 15.7 ± 0.11
Width of guard hairs in pivot, mkmRump 44.4 ± 0.51 45.3 ± 0.64
Back 44.4 ± 0.40 41.0 ± 0.52
Whiters 42.8 ± 0.44 40.6 ± 0.43
Side 44.6 ± 0.50 45.9 ± 0.72
Width of guard hairs in grana, mkmRump 115.6 ± 2.50 118.3 ± 2.20
Back 126.0 ± 2.40 130.8 ± 1.0
Whiters 135.6 ± 2.20 134.2 ± 2.40
Side 126.8 ± 2.80 129.0 ± 2.40
Width of under-fur, mkmRump 24.8 ± 0.28 24.7 ± 0.35
Back 22.9 ± 0.29 23.1 ± 0.27
Whiters 22.9 ± 0.25 22.3 ± 0.26
Side 22.6 ± 0.30 22.9 ± 0.32
Quantity of guard hairs in 1 sq.cmRump 220 ± 36.2 294 ± 24.8
Back 414 ± 76.9 364 ± 39.6
Whiters 394 ± 24.3 386 ± 12.9
Side 314 ± 69.9 320 ± 20.5
Quantity of under-fur in 1 sq.cmRump 2263 ± 76.5 2666 ± 285.1
Back 2796 ± 228.5 2932 ± 285.2
Whiters 3138 ± 337.6 2990 ± 236.2
Side 2382 ± 298.9 2998 ± 246.5

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