Age and Reproduction of Wild-Born and Escaped Mink (Neovison vison) Caught in Danish Nature

Autor: Sussie Pagh, Cino Pertoldi, Mariann Chriel, Trine Hammer Jensen, Sussi Madsen, David Chr. Evar Kraft, Toke Munk Schou, Mette Sif Hansen
Rok vydání: 2020
Předmět:
DOI: 10.20944/preprints202011.0417.v1
Popis: The feral mink population in Denmark consists of two groups of animals; mink born in the wild and mink that have recently escaped from farms. The aims of this study are; 1) to estimate the reproduction and mortality of wild-born and captive-born mink and 2) to estimate the age of mink based on the width of pulp cavity (% of tooth width) in the canine teeth. During 2018, 247 wild caught mink were sent for necropsy at the Danish National Veterinary Institute. Of these mink, 112 were determined as captive-born and 96 were determined wild-born. The mean litter size ± SE of wild-born females was 7.6 ± 0.9 (range: 5-11 kits) and for captive-born females 5.9 ± 0.9 (range: 1-10 kits). The best fitting regression line for mink age (in months) based on pulp width was y=0.42x2-11.52x+104.7, R² = 0.77, p< 0.0001. Individuals with a pulp cavity width
Databáze: OpenAIRE