銀葉粉蝨在胡瓜植株上之空間分布

Spatial Distribution of Bemisia argentifolii on Cucumber

白桂芳(Kuei-Fang Pai) ； 王玉沙(Yu-Sha Wang)

《臺中區農業改良場研究彙報》 81期 (2003/12) Pp. 43-56

https://doi.org/10.6956/BTDAIS.200312.0043

摘要

銀葉粉蝨各發育期及成蟲在胡瓜上之分布迥異，成蟲和卵分布於上位葉，一、二齡若蟲出現於中位葉，三、四齡若蟲則位於下位葉。粉蝨雌蟲於上位葉取食及產卵，依Taylor（a=0.401，b=1.257）及Iwao（α=1.325，β=1.090）的方法，銀葉粉蝨於胡瓜上屬於聚集分布型。銀葉粉蝨族群密度受溫度影響呈正相關關係，而週降雨量對粉蝨族群密度之相關性不明顯。

關鍵字

銀葉粉蝨 ； 空間分布 ； 環境因子

並列摘要

The vertical distribution of eggs, nymphs, and adults of silverleaf whitefly (SLWF), Bemisia argentifolii, was stage-specific on cucumber. Adults and eggs appeared at upper leaves, while the 1st and the 2nd instar nymphs and the 3rd and the 4th instar nymphs appeared at middle and lower leaves, respectively. Feeding and eggs laying behavior of whitefly females may be the reasons causing the females to aggregate on upper leaves. The spatial distribution pattern of B. argentifolii was aggregated and was determined by Taylor's Power Law (a: 0.401, b: 1.257) and Iwao's Mean Crowding Regression (α: 1.325, β: 1.090). Population densities of SLWF was significantly depended on temperature during the period of October ~ May, but not in summer season (June ~ September). Weekly precipitation did not positively influenced the densities of B. argentifolii.

並列關鍵字

Bemisia argentifolii ； spatial distribution ； environmental factors