These pigs had acquired lungworm infestations presumably containing masked influenza virus under natural conditions . 这些猪在自然条件下已受到含有隐蔽流感病毒的肺丝虫寄生。
2.
As a rule the swine infested with the lungworms carrying the "masked virus" did not develop swine influenza immediately upon infestation with the lungworm . 通常，受到携带了“隐蔽病毒”的肺丝虫侵袭的猪，并不因肺丝虫的侵袭立即发生流感。
3.
Laboratory animal - method for examination of dirofilaria immitis 实验动物犬恶丝虫检测方法
4.
Use of a microbial insecticide , bacillus thuringiensis aizawai , to control diamondback moth 使用微生物杀虫剂,苏云氏金杆菌亚莎华防治吊丝虫；
5.
During the mysis substages there is a gradual transition from phytoplankton to zooplankton . feed on : diatoms , animalcule such as a . salina , oyster eggs and larvae as well as on rotifers and nematodes 1在糠虾期幼虫的蜕变中，渐渐从摄食植物浮游生物转变到动物浮游生物。饵料：藻类微生物如丰年虾牡蛎卵轮虫丝虫类动物。
