黄肢散白蚁实验室群体中幼蚁和若蚁比率的变化与补充型形成的关系

THE FORMATION OF SUBSTITUTES OF RETICULITERMES FLAVICEPS IN RELATION TO THE RATIOS OF LARVAE OR NYMPHS IN THE ORPHANED COLONIES

本试验主要研究黄肢散白蚁 Reticulitermes flaviceps 群体中幼蚁、若蚁与补充型形成的关系。在室内饲养的黄肢散白蚁,若群体仅由工蚁及兵蚁组成,群体只能产生无翅补充型。在群体中加入若蚁,这时,群体可出现短翅及无翅两种类型的补充型。短翅型来自若蚁;无翅型来自工蚁。短翅补充型出现明显早于无翅补充型。当群体由工蚁、兵蚁及幼蚁组成,幼蚁可转化成若蚁,然后再转化成有翅补充型。但其短翅补充型的产生比无翅补充型的产生明显推迟。拥有若蚁的群体,补充型产卵较多,卵的孵化率也较高。

The experiments on the formation of substitutes of Reticulitermes flaviceps in relation to larvae and nymphs were made.The data showed that only apterous ne- otenics could be produced if orphaned colonies consisted of workers and soldiers. If orphaned colonies consisted of 76% of workers,20% of nymphs and 4% of sol- diers,colonies produced brachypterous neotenics which derived from nymphs within 27-33 days,and apterous neotenics which derived from workers within 66-68 days. Brachy pterous neotenics were also formed from some of the colonies which contained 76% of workers,20% of larvae and 4% of soldiers.Replacement reproductives in a colony containing nymphs deposited more eggs than the replacement reproductives in a colony without nymphs.