The ultrastructure of cuticle formation was studied in the third molt of Nippostrongylus brasiIiensis, a parasite of rats. For comparative purposes, early events in the formation of adult cuticle during the fourth molt of Nematospiroides dubitts, a parasite of mice, were also examined. In the former, the third cuticle became separated from the hypodermis plasma membrane, and a filamentous coat ...

Abstract Tardigrades (phylum Tardigrada) are aquatic microecdysozoans that have adapted to survive extreme conditions through the formation of cysts or ametabolic tuns. Their body is covered by a cuticle plays an important role in their life cycle, including response and adaptation environmental challenges. Cuticular characteristics critical component tardigrade taxonomy. Therefore, research ha...

We investigated the synthesis and localization of Drosophila pupal cuticle proteins by immunochemical techniques using both a complex antiserum and monoclonal antibodies. A set of low molecular weight (15,000-25,000) pupal cuticle proteins are synthesized by the imaginal disk epithelium before pupation. After pupation, synthesis of the low molecular weight proteins ceases and a set of unrelated...

The degree of plasticization of the alloscutal cuticle of a 'hard' (ixodid) tick, Amblyomma hebraeum, and a 'soft' (argasid) tick, Ornithodoros moubata, was assessed throughout the blood-feeding period. Cuticle viscosity was calculated from rate of creep of cuticle under constant load using a Maxwell model. Feeding-related plasticization (i.e. increased rate of extension under a constant load) ...

BACKGROUND A leaf cuticle has different structures and functions as a barrier to water loss and as protection from various environmental stressors. METHODS Leaves of Panax ginseng were examined by scanning electron microscopy and transmission electron microscopy to investigate the characteristics and development of the epicuticular structure. RESULTS Along the epidermal wall surface, the un...

The cuticle is a hydrophobic lipid layer covering the epidermal cells of terrestrial plants. Although many genes involved in Arabidopsis cuticle development have been identified, the transcriptional regulation of these genes is largely unknown. Previously, we demonstrated that AtCFL1 negatively regulates cuticle development by interacting with the HD-ZIP IV transcription factor HDG1. Here, we r...

Thickening of the integument as a mechanism of resistance to insecticides is a well recognised phenomenon in the insect world and, in recent times, has been found in insects exhibiting pyrethroid-resistance. Resistance to pyrethroid insecticides in the common bed bug, Cimex lectularius L., is widespread and has been frequently inferred as a reason for the pest's resurgence. Overexpression of cu...

For a fuller understanding of the functionality of the eggshell cuticle, we conducted a detailed study using a wide array of analytical techniques (scanning and transmission microscopy), energy dispersive x-rays, and attenuated total reflection-Fourier transform infrared spectroscopy to analyze the structure, morphology, and chemical composition of this organic coating. This study shows that th...