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Sexual dimorphism in the skull of the European mink Mustela lutreola from NW part of Russia

100%

Abramov A. V., Tumanov I. L.

Acta Theriologica

2003

tom 48

nr 2

Morphometric variation in 22 characters of 86 skulls of the European mink Mustela lutreola (Linnaeus, 1761), from the NW part of Russia, has been analysed. Stepwise discriminant analysis was used to estimate craniometric variables for sex determinations. Two characters (zygomatic breadth and interorbital width) are enough for the 96.5% correct classification. The male skull of M. lutreola is characterised by a relatively high neurocranium, widely arranged zygomatic arches, a wide rostrum, and by wider auditory bullae and higher mandibles. Sexual size dimorphism of M. lutreola is less than that of other similar-sized mustelids - Mustela putorius, M. eversmanii, M. sibirica, Neovison vison. The results are discussed in relation to the existing theories on sexual dimorphism in mustelids.

Reproduction in otters in Belarus and north-western Russia

100%

Sidorovich V. E., Tumanov I. L.

Acta Theriologica

1994

tom 39

nr 1

Between 1967 and 1991, otters Latra lutra (Linnaeus, 1758) were collected from Belarus and NW Russia (St. Petersburg, Pskov, and Novgorod regions). Reproductive status was assessed by histological study of the reproductive organs of 99 otters. Reproductive maturity was recorded in otters > 2 years old. No definite breeding period could be determined. The uteri of 10 females contained from 2 to 4 non-resorbing embryos, 2.6 on average. The sizes of 81 litters of blind cubs were counted; an average of 2.6 cubs per litter was recorded.

Ograniczanie wyników

2 Acta Theriologica

2 Tumanov I. L.

1 Abramov A. V.

1 Sidorovich V. E.

1 2003

1 1994

Wyniki wyszukiwania

Sexual dimorphism in the skull of the European mink Mustela lutreola from NW part of Russia

Reproduction in otters in Belarus and north-western Russia