Fine structure of the cuticle and structural changes occuring during moulting in the mite Tetranychus urticae. II. Moulting process (Chelicerata, Acarina)

Mothes-Wagner, Ursula

doi:10.1007/bf00312024

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1984

2001

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Cited by 4 publications

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Comparative histopathology of the chitin synthesis inhibitors nikkomycin X/Z, nikkomycin Z and polyoxin D. I: Effects on moulting, reproduction and digestion in the spider mite Tetranychus urticae

Mothes-Wagner

1986

Pestic. Sci.

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The effects of the closely related chitin synthesis inhibitors, the nucleoside peptidyl antibiotics nikkomycin X/Z, nikkomycin 2 and polyoxin D on the two-spotted spider mite, Tetranychus urricae, have been studied by electron microscopy. The application of all three compounds, nikkomycin X/Z (95% active ingredient, ratio of components unknown), nikkomycin Z (pure component) and polyoxin D (pure component) disrupted cuticle, eggshell and yolk synthesis and influenced the silk and salivary glands. Ultrahistological patterns indicated differences in the mode of action of the three compounds which were especially evident in an alteration of the nuclear ultrastructure in the mid-gut cells, which was only caused by polyoxin D. Mechanisms of action and their consequences on function, based on previously published information on the action of these compounds, are discussed.

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