fourth instar meaning in Chinese

四龄期

Suggesting that the larvae of spodoptera exigua died more quickly when fb - 28 were added to the virus . the larvae of spodoptera exigua inoculated as newly molted fourth instars ( 40s ) and at various hours after molting ( 316s ) , we sacrificed larvae at various time intervals after inoculation to process the larvae for lacz expression in midgut by using tissue section techniques on early phase infection
此外，对于处于不同虫龄的幼虫进行病毒感染时发现：对3 ~ ( 16 )幼虫毒力生物测定时，荧光增白剂的增效作用达到50 ，但对4龄初的供试幼虫进行测定，荧光增白剂的增效作用却不很明显，仅为10 。