Changes in ontogeny, morphological character, physiological state, nutritional quality and secondary chemicals of plant could be induced by prior damage. The induced changes might have general negative effects on the ...Changes in ontogeny, morphological character, physiological state, nutritional quality and secondary chemicals of plant could be induced by prior damage. The induced changes might have general negative effects on the behavior, development, survival and fecundity of successively occurred phytophagous insects because a change will redUce plant nutritional value, stimulate plant to produce poisonous chemicals or release synomone attractive to their natural enemies. Induced plant resistance could be an on-off response, be turned on in a relative short time when plants are damaged to above a certain threshold and causes plant show an individual and population effect on phytophagous insects due to its transmission within a plant and between plants. Induced plant resistance is variable among plant species, varieties, individuals and developmental stages and could be influenced by plant density, damage position and level, soil fertility and water content. Two aspects in thisarea, the mechanism of plant causing induced resistance and its relative importance on controlling phytophagous insects, should be studied further for convincing conclusions in the future.展开更多
扫描电镜观察表明:野蚕黑卵蜂Telenomus theophilae Wu et Chen触角上存在着9种感觉器。其中锥形感器、毛形感器Ⅰ型、具沟端弯感器、多侧孔感器、栓锥感器和钟形感器雌雄均有,仅数量和分布存在差异;毛形感器Ⅱ型和端孔坛形感器只在雌...扫描电镜观察表明:野蚕黑卵蜂Telenomus theophilae Wu et Chen触角上存在着9种感觉器。其中锥形感器、毛形感器Ⅰ型、具沟端弯感器、多侧孔感器、栓锥感器和钟形感器雌雄均有,仅数量和分布存在差异;毛形感器Ⅱ型和端孔坛形感器只在雌蜂触角上存在,而端突柱形感器则为雄蜂所特有。感器种类、数量和分布在性别间的差异,为研究该蜂寻找生境和寄生行为提供了形态学依据。展开更多
文摘Changes in ontogeny, morphological character, physiological state, nutritional quality and secondary chemicals of plant could be induced by prior damage. The induced changes might have general negative effects on the behavior, development, survival and fecundity of successively occurred phytophagous insects because a change will redUce plant nutritional value, stimulate plant to produce poisonous chemicals or release synomone attractive to their natural enemies. Induced plant resistance could be an on-off response, be turned on in a relative short time when plants are damaged to above a certain threshold and causes plant show an individual and population effect on phytophagous insects due to its transmission within a plant and between plants. Induced plant resistance is variable among plant species, varieties, individuals and developmental stages and could be influenced by plant density, damage position and level, soil fertility and water content. Two aspects in thisarea, the mechanism of plant causing induced resistance and its relative importance on controlling phytophagous insects, should be studied further for convincing conclusions in the future.
文摘扫描电镜观察表明:野蚕黑卵蜂Telenomus theophilae Wu et Chen触角上存在着9种感觉器。其中锥形感器、毛形感器Ⅰ型、具沟端弯感器、多侧孔感器、栓锥感器和钟形感器雌雄均有,仅数量和分布存在差异;毛形感器Ⅱ型和端孔坛形感器只在雌蜂触角上存在,而端突柱形感器则为雄蜂所特有。感器种类、数量和分布在性别间的差异,为研究该蜂寻找生境和寄生行为提供了形态学依据。
