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Bemisia tabaci (Hemiptera: Aleyrodidae) nymphal feeding in cotton (Gossypium hirsutum) leaves
作者姓名:CHANG-CHI  CHU  DENNIS  A.  MARGOSAN  JAMES  S.  BUCKNER  THOMAS  P.  FREEMAN  THOMAS  J.  HENNEBERRY
作者单位:[1]USDA, ARS, US Arid Land Agricultural Research Center, Maricopa, Arizona [2]USDA, ARS, San Joaquin Valley Agricultural Science Center, Parlier, California [3]Biosciences Research Laboratory, Fargo, North Dakota [4]Electron Microscopy Center, North Dakota State University, Fargo, North Dakota, USA
摘    要:We used brightfield electron microscopy (BEM), differential interference contrast microscopy (DICM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and confocal laser scanning microscopy (CLSM) to investigate the stylet pathways of Bemisia tabaci during nymphal feeding behavior in cotton leaves beginning with penetration of the abaxial leaf surface and ending with stylets in sieve tubes in phloem tissues. Most nymphal stylets within salivary sheaths penetrating leaf tissues made complex turns and developed more than one salivary sheath branch before ending in sieve tubes. The external morphology of the salivary sheaths and their routes between and through leaf cells are described during the present study. Results showed the presence of the stylet within the sieve tubes. B. tabaci nymphs may remove stylets and feed in different sieve tubes. Ten short movies showing the progression of the stylet penetrations from adaxial surface to the sieve tubes are attached to Figures 8-15. The report and movies can be viewed from the internet. Download the movies to a local drive in your computer first for fast upload. The movies are posted on the website http://www.ars.usda.gov/Services/docs.htm?docid=14629. The movies can be used as a teaching aid in biology classes.

关 键 词:昆虫  显微观察  半翅类  食物
修稿时间:2007-06-26

Bemisia tabaci (Hemiptera: Aleyrodidae) nymphal feeding in cotton (Gossypium hirsutum) leaves
Authors:CHANG-CHI CHU  DENNIS A MARGOSAN  JAMES S BUCKNER  THOMAS P FREEMAN  THOMAS J HENNEBERRY
Institution:USDA, ARS, US Arid Land Agricultural Research Center, Maricopa, Arizona;USDA, ARS, San Joaquin Valley Agricultural Science Center, Parlier, California;Biosciences Research Laboratory, Fargo, North Dakota;Electron Microscopy Center, North Dakota State University, Fargo, North Dakota, USA
Abstract:We used brightfield electron microscopy (BEM), differential interference contrast microscopy (DICM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and confocal laser scanning microscopy (CLSM) to investigate the stylet pathways of Bemisia tabaci during nymphal feeding behavior in cotton leaves beginning with penetration of the abaxial leaf surface and ending with stylets in sieve tubes in phloem tissues. Most nymphal stylets within salivary sheaths penetrating leaf tissues made complex turns and developed more than one salivary sheath branch before ending in sieve tubes. The external morphology of the salivary sheaths and their routes between and through leaf cells are described during the present study. Results showed the presence of the stylet within the sieve tubes. B. tabaci nymphs may remove stylets and feed in different sieve tubes. Ten short movies showing the progression of the stylet penetrations from adaxial surface to the sieve tubes are attached to Figures 8‐15. The report and movies can be viewed from the internet. Download the movies to a local drive in your computer first for fast upload. The movies are posted on the website http://www.ars.usda.gov/Services/docs.htm?docid=14629 . The movies can be used as a teaching aid in biology classes.
Keywords:Bemisia tabaci  microscopy  nymphs  feeding  stylet sheath  stylet
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