The degradation of chitin by chitinase was vital step in the life cycle of insects because insects undergo periodic ecdysis and metamorphosis 幾丁質(zhì)代謝隨昆蟲不同生長發(fā)育階段而變化并保持相對(duì)的穩(wěn)定,對(duì)昆蟲的正常的生長發(fā)育是至關(guān)重要的。
Transgenic bt cotton mainly affect high - instar larvae by retarding the growth and intering the proceeding of ecdysis , pupation , and eclosion . the growth retardation leads to the postponement of growth period duration ( the showed that growth period duration prolonged 17 days ) . feeding the larvae with the tissue of the transgenic bt cotton and the moths with the flower of transgenic bt cotton , the number of eggs and hatching rate decreased obverviously 轉(zhuǎn)基因藥防田中,天敵昆亞群落的個(gè)體數(shù)占整個(gè)昆蟲群落總個(gè)體數(shù)的10 . 0 % ,其優(yōu)勢(shì)種為蜘蛛類、七星瓢蟲( coceinellas叩te即uneitatalinnaeus ) 、龜紋瓢蟲( prol , laea少只ponjcagoeze ) 、大眼蟬長蜷( prqp . ylaeajaponicagoeze )和草嶺(助rys叩asepre即unetatawesmael ) 。
英文解釋
periodic shedding of the cuticle in arthropods or the outer skin in reptiles 同義詞:molt, molting, moult, moulting,
百科解釋
Ecdysis (from , , to take off, strip off) is the moulting of the cuticula in many invertebrates. This process of moulting is the defining feature of the clade Ecdysozoa, comprising the arthropods, nematodes velvet worms, horsehair worms, tardigrades, and Cephalorhyncha.