室內進行寄主植物轉移對粗長毛禾根綿蚜族群之影響（同翅目：癭綿蚜科）

於實驗室中，研究粗長毛禾根綿蚜（Tetraneura nigriabdominalis（Sasaki））在四種寄主植物（牛筋草Eleusine indica、水稻Oryza sativa、玉米Zea mays及高粱Sorghum bicolor）轉移對其成蚜壽命、繁殖率及族群介量之影響。在30±1～2℃（70－80%RH；光週期12L:12D）下進行寄主植物轉移試驗，連續觀察6個世代，於四組轉移寄主植物中，粗長毛禾根綿蚜由牛筋草轉移至水稻、玉米及高粱之第1世代，若蚜可成功存活至成蚜比例皆不到50%，而由水稻轉移至牛筋草之第1世代之若蚜存活比例為52%，若蚜於第3世代後死亡率下降，隨著世代數增加，在轉移寄主上若蚜可成功存活至成蚜比例則上升，可達78至92%。轉移寄主植物後之成蚜繁殖率、內在增殖率、終極增長率及淨增殖率皆隨世代數增加而上升至第3或第4世代後則沒有明顯差異。

關鍵字

粗長毛禾根綿蚜；轉移寄主；牛筋草；水稻；玉米；高粱

並列摘要

Host alterations of the root aphid, Tetraneura nigriabdominalis (Sasaki), among four host plants (Eleusine indica, Oryza sativa, Zea mays, and Sorghum bicolor) were studied by comparing adult longevity, fecundity, and population parameters in the laboratory. Transplanted host plants were evaluated at 30± 1~2℃ (70-80% RH; 12L: 12D) for continuous observations on six generations. Survivorship for nymphs growing to adults of T. nigriabdominalis in the first generation when transferred from E. indica to O. sativa, Z. mays, or S. bicolor was lower than 50%, and that of aphids transferred from O. sativa to E. indica was 52%. Nymph mortality decreased over three generations after host transfer. Survivorship of adult continually increased with time up to six generations to 78~92%. Adult fecundity, the intrinsic rate of increase, the finite rate of increase, and the net reproductive rate of populations continually increased to six generations after transplantation. However, there were no significant differences after the populations had bred for three or four generations on the four host plants.

並列關鍵字

Tetraneura nigriabdominalis ； host plant transplantation ； Eleusine indica ； Oryza sativa ； Zea mays ； Sorghum bicolor

國際替代計量

室內進行寄主植物轉移對粗長毛禾根綿蚜族群之影響（同翅目：癭綿蚜科）

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