摘要
目（竹节虫目）的昆虫具有很强的断肢再生能力。该文通过对华枝属（Ｓｉｎｏｐｈａｓｍａｓｐｐ）三种昆虫的实验，表明其再生能力与断肢发生的时间及数量有关。断肢１只或２只的１～４龄虫体发育至成虫期或至若虫末龄时，其再生足的长度与相应的正常足长度相近。若在５龄初时断肢１～２只，也具有再生能力，但至成虫期其再生足的长度则短于相对应的正常足。若在６龄及成虫时断肢，则无再生能力（若６龄时出现断肢再生，则若虫期多为７龄）。实验结果还表明，若断肢为３只或３只以上，则虫体不能存活，且多在断肢后２～３ｄ内死亡。观察中尚发现，再生足生长速度明显高于正常足。而且，断肢的龄期越高，再生足生长速度越快。再生足的伸长生长与正常足一样，均出现于虫体蜕皮时。
Phasmatodea is a group of insects with strong regeneration ability of leg autotomy. Results of our experimental studies on 3 species of genus Sinophasma Günther indicate that this ability is closely related with time and number of legs amputated: (1) If 1 or 2 legs were amputated at 1～4 instar, length of the regenerated legs of the adults or of the last instar, are close to those of the normal insects (the control); (2) If the same amputation (1 or 2 legs) was done at beginning of 5 instar, lengths of the regenerated legs of the adult insects are shorter than those of the control; (3) If legs were amputated at 6 instar or adult stage no regeneration is possible, (if at 6 instar legs regenerated as usual , the nymph stage will prolong to 7 instar). Other results are: (1) When 3 or more legs amputed, the insects can not survive, death follows within 2 or 3 days. (2) Rate of growth of the regenerate legs is faster than that of the normal legs and rate increases with the increase of instar stage. (3) Either regenerated or normal legs elongate only when molting.
出处
《昆虫学报》
CAS
CSCD
北大核心
1999年第2期159-165,共7页
Acta Entomologica Sinica
基金
国家自然科学基金
关键词
XIU目
异XIU科
华枝Xiu属
断肢再生
Phasmatodea, Heteronemiidae, Sinophasma, autotomy, artus regeneration
