重离子射线局部照射技术在昆虫机能解析中的应用

为了探索重离子射线局部照射使昆虫体内某一特定的组织或器官失去活性这一放射线显微手术技术的有效性和可能性，用碳离子射线（¹²C⁵⁺，18.3MeV/u）对家蚕Bombyx mori幼虫进行了全体照射或局部照射。 研究结果表明： 与全体照射不同，局部照射后的个体与对照个体在存活率及茧质等性状上没有明显的差异，只是由于照射剂量及照射部位的不同，在照射部位出现局部的影响。对4龄第3天幼虫的造血器官进行局部照射后，其造血功能遭到破坏，血液中的游离血球数明显下降。因此利用重离子射线局部照射技术能够替代某些传统的外科手术，破坏昆虫体内特定的组织或器官，以便进行该器官或组织的机能研究。

Application of heavy ion beams radio-surgery to function analysis of insect specific organ

To test the validity of radio-surgery of heavy ion beams, which inactivate a specific organ through local irradiation, silkworms (Bombyx mori) were whole-body exposed or locally irradiated with carbon ion beams (()~(12)C~(5 ); 18.3 MeV/u). Between controls and larvae locally irradiated at the wandering stage, no significant differences in either survival or cocoon quality were observed. Only localized effects were observed, depending on both dose and site of irradiation, but this was not true for whole-body irradiated larva. After local irradiation of the hemopoietic organs at the 4th instar premolting stage, the hemocyte densities were clearly reduced and the hemopoietic organs capacity was disrupted. The results show that radio-surgery utilizing heavy ion beams can destroy a specific organ or tissue in a larva of insect.