6J Z Reed, D J Toll it , P M Thompson et al. Molecular scatology: the use of molecular genetic analysis to assign species, sex and individual identity to seal faeces [J] .Molecular Ecology, 1997(6): 225-234.
7M A J Frant zen, J B Silnk, J W H Ferguson, et al. Empirical evaluation of preservat ion methods for faecal DNA[J] .Molecular Ecology, 1998(7): 1423-1728.
8Zhao J J,Yan X J,Chai X L,et al.Phylogenetic analysis of the haemagglutinin gene of canine distemper virus strains detected from breeding foxes,raccoon dogs and minks in China[J].Vet Microbiol,2010,140(1-2):34-42.
