黑胸散白蚁幼期不同品级的发育和分化

在黑胸散白蚁Reticulitermeschinensis发育和分化过程中 ,发现有假工蚁、假若蚁两种虫态。假工蚁由 6龄和 7龄工蚁转化发育而来 ,假若蚁由 4龄和 5龄若蚁转化发育而来。显微测量结果表明 ,黑胸散白蚁的胚后发育主要包括 2个龄期的幼蚁期、 6个以上龄期的工蚁期、 4个龄期的若蚁期和有翅成虫。在此基础上分析了其他虫态的分化来源 ,发现兵蚁由 3～7龄工蚁分化发育而来 ,翅鳞型和长翅芽型补充生殖蚁由 6龄若蚁转化发育而来 ,短翅芽型补充生殖蚁由 4龄和 5龄若蚁转化发育而来 ,微翅芽型补充生殖蚁既可由 4～ 6龄工蚁转化发育而来 ,又可由假工蚁和假若蚁转化发育而来 ,无翅型补充生殖蚁由 3～ 7龄工蚁转化发育而来。提出了黑胸散白蚁群体中不同品级个体的可能分化途径

Development and differentiation of various castes in the immature stage of Reticuli-termes chinensis

The pseudo worker and pseudo nymph were recognized during the development and differentiation of the immature stage of Reticulitermes chinensis .The workers of 6th and 7th instars turned into the pseudo workers,while the nymphs of the 4th and 5th instars turned into the pseudo nymphs.Microscopic measurement showed that after hatching the main development stages consisted of a larval stage of two instars,a worker stage of more than six instars,a nymphal stage of four instars and an imago stage.The workers of 3rd-7th instars turned into the soldiers,the nymphs of the 6th instar turned into the scale and long wingbud replacement reproductives, the nymphs of the 4th and 5th instars turned into the short wingbud replacement reproductives,the workers of 4th-6th instars, pseudo worker and pseudo nymph turned into the miniwingbud replacement reproductives and the workers of the 3rd-7th instars turned into the no wingbud replacement reproductives.Based on these observations,a differentiation scheme of the various castes in Reticulitermes chinensis is proposed.