Ultrastructure, development, and homology of insect embryonic cuticles

@article{Konopov2005UltrastructureDA,
  title={Ultrastructure, development, and homology of insect embryonic cuticles},
  author={Barbora Konopov{\'a} and Jan Zrzav{\'y}},
  journal={Journal of Morphology},
  year={2005},
  volume={264}
}
Ultrastructure and deposition of the cuticles secreted by embryos representing eight insect orders were examined by transmission and scanning electron microscopy. Embryos of the apterygote silverfish Thermobia domestica deposit two embryonic cuticles. Deposition of the first (EC1) is initiated at the beginning of appendage development when the intercalary segment and the neural groove are clearly visible. This cuticle lacks surface microsculpture and consists of an outer epicuticle and an… Expand
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  • Biology, Medicine
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References

SHOWING 1-10 OF 54 REFERENCES
Embryonic development of an insect sensory system, the abdominal cerci ofAcheta domesticus
TLDR
The role of the pioneer fibres in establishing a pathway for the functional Sensillar neurons is discussed in relation to other studies of sensillar development in insects. Expand
Provisional Embryonic Cuticles of Dysdercus Cingulatus (Hemiptera: Pyrrhocoridae)
TLDR
The presence of neurosecretory cells of the brain, of a pair of thoracic glands, and of corpora allata in embryos of this species is confirmed and may be described as preadaptations. Expand
Cuticle formation during the embryonic development of the dipteran Ceratitis capitata Wied
TLDR
Two cuticles are secreted at different times over the epidermal cells during the embryonic development of Ceratitis capitata, and freeze‐fracture replicas show intramembrane clusters of particles associated with the P‐face of the membrane in correspondence with the short protuberances of theEpidermal cell apex. Expand
The embryonic apolyses of Schistocerca gregaria (Orthoptera)
TLDR
The origin and differentiation of the ecdysial glands and the appearance of the cuticles were studied in embryos of Schistocerca gregaria and in headless embryos explanted in vitro, finding evidence of a cyclic glandular activity in the embryos. Expand
Embryonic integument and “molts” in manduca sexta (insecta, lepidoptera)
TLDR
A marked difference is seen: the second embryonic cover in Manduca sexta, which in Hemimetabola clearly exhibits a cuticular organization, has instead a membranous, cuticulin‐like structure, which is seen as the result of an evolutionary reductional process promoted by the redundancy of embryonic covers in the egg shell. Expand
A scanning electron microscope study of the developing embryo of Manduca sexta (L.) (Lepidoptera : Sphingidae)
TLDR
Scanning electron microscopy of the developing Manduca sexta (Lepidoptera : Sphingidae) embryo reveals that the body wall of the insect undergoes considerable morphogenesis beginning at 20 hr post-oviposition, which gives rise to the formation of rudimentary segments and appendages. Expand
External features of the developing embryo of the stonefly, Kamimuria tibialis (pictet) (plecoptera, perlidae)
TLDR
External features of the egg, developing embryo, and first instar nymph of Kamimuria tibialis are described and it is proposed that the immersed type of growth pattern of embryos is divided into two subtypes in hemimetabolous insects. Expand
Embryogenesis of the fairy moth, nemophora albiantennella issiki (Lepidoptera, Adelidae), with special emphasis on its phylogenetic implications
TLDR
The phylogeny obtained from the distribution of these embryonic characters is : Incurvarioidea+(Nepticuloidea+Ditrysia), which strongly supports the monophyly of the infraordinal taxon Heteroneura, and does not coincide with any other arrangements formerly proposed on the basis of adult and larval characters. Expand
An experimental analysis of molting in embryos of Melanoplus differentialis
TLDR
The neuroendocrine system of the head and prothorax is not necessary for the control of either of the embryonic molts of M. differentialis, and the coordination and control of embryonic molting in this species seems to lie in the epidermal tissue. Expand
Ultrastructure of embryonic envelopes and integument ofOncopeltus fasciatus Dallas (Insecta, Heteroptera)
TLDR
The appearance of orientated microtubules during katatrepsis may be indicative for an active participation in embryonic movements, and some aspects of differentiation and determination are discussed. Expand
...
1
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4
5
...