Growth characteristics and pathogenic consequences of predominant entomopathogenic Yukon soil fungi Mortierella alpina and Penicillium expansum,and effectiveness of Met52®,against larvae of the winter tick,Dermacentor albipictus  

作　　者：Yoder JA Krieger M Oakley M Trotter J Schmelzer P Niksic A Rodell BM Klever LA 

机构地区：[1]Department of Biology,Wittenberg University,Springfield,OH,45501,USA [2]Champagne and Aishihik First Nations,Haines Junction,YT,Y0B 1L0,CAN [3]Oakley Veterinary Services,Haines,AK,99827,USA

出　　处：《Studies in Fungi》2019年第1期101-110,共10页真菌研究（英文）

摘　　要：Water activity-temperature relationships are reported for Yukon soil-isolated strains of Mortierella alpina and Penicillium expansum that are natural enemies to larvae(infestation stage)of the winter tick Dermacentor albipictus.Both fungal strains are psychrotrophs,characterized by low thermal growth ranges,consistent with their occurrence in Yukon soil.In contrast to P.expansum,M.alpina is more temperature sensitive,has a higher requirement,and is more virulent to tick larvae.Researchers and Biological Control Officers should note that for tick population control these M.alpina and P.expansum strains grow and sporulate well under moderate temperature and humid conditions.Our experiments used Met52®Bioinsecticide as a positive control,and this is the first study that demonstrates the effectiveness of this commercial product against winter tick larvae.

关 键 词：Alaska biological control Canada elk tick horse tick moose tick temperature water activity 

分 类 号：R38[医药卫生—医学寄生虫学]