CUTICULAR CAVITIES - STORAGE CHAMBERS FOR CYANOGLUCOSIDE-CONTAINING DEFENSIVE SECRETIONS IN LARVAE OF A ZYGAENID MOTH
CUTICULAR CAVITIES - STORAGE CHAMBERS FOR CYANOGLUCOSIDE-CONTAINING DEFENSIVE SECRETIONS IN LARVAE OF A ZYGAENID MOTH
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DOI：
10.1016/0040-8166(85)90093-x
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发表时间：
1985-01-01
期刊：
影响因子：
2.6
通讯作者：
NAUMANN, CM
中科院分区：
文献类型：
--
作者：
FRANZL, S;NAUMANN, CM
作为对捕食者的防御反应，Z。trifoliiiEtrium，1783，从表皮腔中释放出高粘性的液滴。受刺激的节段收缩时，液体出现在表皮表面上，没有专门的肌肉参与。两种形态上不同类型的腔被发现：较大的是位于色素点下方，较小的占据其余的表面，除了在腹侧区域。两种类型都具有复杂的表皮开口结构。防御液含有氰基葡萄糖苷linamarin和lotaustralin，氨基酸β-氰基-L-丙氨酸、蛋白质和水。尽管相当大量的液体（每6龄幼虫3-6 μ l）储存在角质层中，但表皮的精细结构检查未显示任何具有分泌物的形态适应的特定细胞或细胞区域。腔下方的细胞和腹侧区域的细胞之间不存在任何重大的细胞学差异，腹侧区域没有这些腔。
As a defensive reaction against predators the larvae of Z. trifolii Esper, 1783, release highly viscous fluid droplets out of cuticular cavities. The fluid appears on the cuticular surface upon contraction of the irritated segments, wtih no specialized muscles being involved. Two morphologically different types of cavities were found: the larger ones are located beneath pigment spots, the smaller ones occupy the remaining surface except in the ventral region. Both types have complicated cuticular opening structures. The defensive fluid contains the cyanoglucosides linamarin and lotaustralin, the amino acid .beta.-cyano-L-alanine, proteins and water. Although a considerable amount of fluid (3-6 .mu.l per 6th-instar larva) is stored in the cuticle, fine structural examinations of the epidermis do not show any specific cells or cell areas with morphological adaptations for secretion. There do not exist any major cytological differences between the cells below the cavities and in the ventral region, where those cavities are absent.