Original paper
Egg Morphology of the Predatory mite, Cheyletus malaccensis (Acarina: Cheyletidae)
[Morfologie vajícek dravého roztoce,
Cheyletus malaccensis (Acarina: Cheyletidae). –]
Kucerová, Zuzana;Hromádková, Jirina
published: 6/23/2009
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ArtNo.: ESP146003201004
Abstract (German)
The external egg morphology of the predatory mite Cheyletus malaccensis Oudemans 1903 was studied. It was found that the eggs have two shape forms.The freshly laid egg is regularly ellipsoid (133 x 94 m), but its shape changes to ovoid ( 143 x 96 m) approximately in the middle of its development. The formation of the ovoid egg shape is connected with the appearance of a special microstructure, which perforates the egg surface on the top of the broader end of the egg. The duration of both egg forms depends on the temperature conditions. Morphological details of eggshells are illustrated with scanning electron microscope (SEM) micrographs.
Abstract (Spanish)
Byla studována morfologie vajíček dravého roztoče Cheyletus malaccensis Oudemans 1903. âerstvû nakladená vajíčka jsou oválná (133x94 μm), ale jejich tvar se mûní na vejcovitý (143x96 μm) cca v polovinû jejich vývoje. Délka trvání obou tvarových forem je závislána na teplotû. Morfologické detaily povrchu vajíčka jsou dokumentovány SEM mikrofotografi emi.
Keywords
Cheyletus malaccensis Oudemans 1903 • biocontrol • eggshell surface structure • egg development