By Dr. Anthony C. Neville (auth.)
Mention the phrases 'arthropod cuticle' to so much biologists and so they frequently galvanize a glazed expression. for the reason that the cuticle is often considered as an inert substance. it really is was hoping that this publication will dispel this fallacy. The examine of cuticle in its right context now contains a number of the wider features of biology that are presently fashionable (e. g. how a hormone like ecdyson induces a selected enzyme like dopa decarboxylase; the unsolved serious problem of phone gradient and polarity; the involvement of cyclic AMP in hormonal mechanisms; the additional mobile keep an eye on of cuticular enzymes, of the mechanical right ties of cuticle structural proteins, and of the orientation of fibrous molecules; and the relation of chromosome puffing to the synthesis of particular proteins). experiences on cuticle call for quite a few ideas, and examples of the next are illustrated during this booklet (fluorescence, part distinction, polariza tion and Nomarski interference microscopy; infrared absorp tion; transmission and scanning electron microscopy; autora diography analyzed by way of electron microscopy; unfavourable staining within the electron microscope; optical diffraction, excessive attitude X-ray diffraction, low attitude X -ray diffraction and chosen sector electron diffraction). i'm good conscious that the biophysical components of this booklet are much less incomplete than different facets. A developmental biologist or a biochemist could have extra elaborated different components ofthe material. just one prior writer, RICHARDS (1951)hasdevoted a e-book to arthropod cuticle.
Read Online or Download Biology of the Arthropod Cuticle PDF
Best entomology books
Within the nice naturalist culture of E. O. Wilson, Jae Choe takes readers right into a miniature international ruled through six-legged organisms. this is often the realm of the ant, an insect that people, in addition to such a lot different lifestyles types, depend on for his or her very survival. simply probably the most vital animals on the earth, ants appear to replicate the activities, feelings, and industries of the human inhabitants, frequently extra successfully than people do themselves.
In 1998, the Southern Saltmarsh Mosquito Aedes camptorhynchus (‘Campto’) was once by chance transported from Australia to Hawke’s Bay in New Zealand, from the place it dispersed to a different 10 localities typically at the North Island. After an funding of NZ$70 million over 10 years, this saltmarsh service of Ross River virus was once eliminated in an international first application which stunned many.
Embryogenesis Digestion food Integument Hormones and improvement Diapause middleman Metabolism Neuroanatomy Neurophysiology muscle tissues Flight Sensory platforms imaginative and prescient Circulatory method Immunity respiratory Excretion Pheromones replica Appendix. learn extra. .. summary: Embryogenesis Digestion nutrients Integument Hormones and improvement Diapause middleman Metabolism Neuroanatomy Neurophysiology muscle tissue Flight Sensory structures imaginative and prescient Circulatory method Immunity breathing Excretion Pheromones replica Appendix
- Physician's Guide to Arthropods of Medical Importance, Fifth Edition
- Parasite Rex Parasite Rex: Inside the Bizarre World of Nature's Most Dangerous Creatures
- Marine Biodiversity of Costa Rica, Central America (Monographiae Biologicae)
- Charles Darwin: Zur Evolution der Arten und zur Entwicklung der Erde
- Juvenile Hormones and Juvenoids: Modeling Biological Effects and Environmental Fate
Extra info for Biology of the Arthropod Cuticle
Legends see opposite page 29 WEIS-FOGH (1970) suggests that this results from a high density of reactive groups exposed on the surface of the completed cuticle. This could partly be due to enzyme action. What appears to have hitherto received no comment is the absence of cuticular material between the microvilli of the epidermal apical surface (Fig. 16). The material begins at a line drawn along the tips of the microvilli. There even appears to be a continuous structure running along this line.
1. Wax Canals (Epicuticular Filaments) Thus the 60 A diameter wax canals of LOCKE (1960a) traverse the outer and inner epicuticles, fusing to form pore canals in the latter layer. Hence each pore canal comes to contain several wax canal filaments. Because these filaments contain an esterase, LOCKE (1961) has suggested that wax may be synthesized in these canals in Calpodes, Galleria, Tenebrio and Apis. However, FILSHIE (1970 a, b) has shown by electron microscopy that in both Lucilia cuprina and 33 Calpodes ethlius the filaments survive prolonged acid hydrolysis (14 days in 36% HCI).
G. protein and chitin). TREHERNE (1961) has demonstrated the permeability of the basement membrane of nerve sheath to inulin. Hence, the deposition zone may not be simply converted into cuticle, but may exist as a long-term loose matrix through which cuticular macromolecules pass and become oriented on their way to the growing cuticle interface. Clearly a good deal of further research is needed on deposition zones, either directly or by chemical modelling experiments. 5. Ecdysial or Moulting Membrane and Moulting Fluid It has been emphasised (JENKIN and HINTON, 1966) that the event which begins an ecdysis is the separation of the epidermis from the inner face of the old cuticle (apolysis).