The conidia of Arthrobotrys oligospora in vitro were able to survive in the fluid of rumen, abomasums and duodenum of sheep and could pass through the gastro-intestinal tract of rabbits.

• 捕食线虫性真菌---少孢节丛孢菌菌株分生孢子在体外对绵羊瘤胃液、真胃液、十二指肠液具有耐受力，在通过兔子消化道后仍能存活；