Nalepa C A
Entomology Department, North Carolina State University, Raleigh 27695-7613.
Proc Biol Sci. 1991 Nov 22;246(1316):185-9. doi: 10.1098/rspb.1991.0143.
Thorne's (Proc. R. Soc. Lond. B 241, 37 (1990] studies of the laboratory behaviour of extant woodroaches (Cryptocercus) and termites (Zootermopsis) suggest that transfaunation of hindgut protozoans potentially could occur by aggression and consumption in the field. However, existing literature suggests no overlap in protozoan species composition for these two taxa. Furthermore, it is doubtful that transfaunation would occur in the solitary ancestral 'termitoid' and 'roachoid' lines proposed by Thorne: not only is it unlikely that such insects would encounter each other, but it is doubtful that they would show the degree of aggression exhibited by the termite soldiers in her study. Inheritance from an ancestor common to Cryptocercus and the lower termites remains the most logical explanation for the presence of the unique cellulolytic oxymonad, trichomonad and hypermastigote flagellates in these two groups.
索恩（《英国皇家学会学报B》241, 37 (1990)）对现存蜚蠊（隐尾蠊属）和白蚁（草白蚁属）实验室行为的研究表明，后肠原生动物的群落转移在野外可能通过攻击和取食发生。然而，现有文献表明这两个类群的原生动物物种组成没有重叠。此外，索恩提出的独居祖先“白蚁类”和“蜚蠊类”品系中发生群落转移的可能性令人怀疑：此类昆虫不仅不太可能相互接触，而且它们是否会表现出她研究中白蚁兵蚁所展现的攻击程度也令人怀疑。隐尾蠊和低等白蚁共有祖先的遗传，仍然是这两类群中存在独特的纤维素分解尖毛单胞菌、毛滴虫和超鞭毛虫的最合理的解释。
