Deml Reinhold, Dettner Konrad
Lehrstuhl für Tierökologie II, Universität Bayreuth, 95440 Bayreuth, Germany.
Naturwissenschaften. 2003 Oct;90(10):460-3. doi: 10.1007/s00114-003-0458-8. Epub 2003 Aug 23.
The morphology of the variously coloured scoli (bristle-bearing structures on the integument, producing an exocrine secretion) on caterpillars of Hyalophora cecropia and the secondary chemistry of the discharged secretions have been investigated for the first time and compared. According to our scanning electron microscopic study, the red/orange, yellow and blue coloured groups of these glands differ morphologically. Gas chromatographic-mass spectrometric analyses showed that the patterns of secondary compounds in the respective glandular secretions are also different. Furthermore, the secretion of the penultimate larval instar is chemically distinct from that of the last instar, as are both secretions from the respective haemolymph. The results favour the idea that the differences in scoli colour, morphology and chemistry could affect various predator species differently.
首次对樗蚕幼虫身上不同颜色的刚毛（体壁上的具毛结构，产生外分泌分泌物）的形态以及排出分泌物的次生化学进行了研究并加以比较。根据我们的扫描电子显微镜研究，这些腺体的红色/橙色、黄色和蓝色组在形态上有所不同。气相色谱-质谱分析表明，各个腺体分泌物中的次生化合物模式也不同。此外，倒数第二龄幼虫的分泌物在化学组成上与最后一龄幼虫的分泌物不同，各自血淋巴中的分泌物也是如此。这些结果支持这样一种观点，即刚毛的颜色、形态和化学组成的差异可能对不同的捕食者物种产生不同的影响。
