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Volume 10 of Advances in Disease Vector Research consists of seven
chapters on vectors that affect human or animal health and six
chapters on plant pathogens and their vectors. In Chapter 1, Yasuo
Chinzei and DeMar Taylor discuss hormonal regulation of
vitellogenesis in ticks. Many blood sucking insects and ticks
transmit pathogens by engorgement, which induces vitellogenesis and
oviposition in adult animals. To investigate the pathogen
transmission mechanism in vector animals, information on the host
physiological and endocrinological conditions after engorgement is
useful and important because pathogen development or proliferation
occurs in the vector hosts at the same time as the host
reproduction. Chinzei and Taylor have shown that in ticks, juvenile
hormone (JH) is not involved in the endocrinological processes
inducing vitellogenin biosynthesis. Synganglion (tick brain)
factor(s) (vitellogenesis inducing factor, VIF) is more important
to initiate vitellogenesis after engorgement, and ecdysteroids are
also related to induction of vitellogenin synthesis. In their
chapter, based mainly on their own experimental data, the authors
discuss the characterization of main yolk protein, vitellogenin
(Vg) , biosynthesis and processing in the fat body, and hormonal
regulation of Vg synthesis in tick systems, including ixodid and
argasid ticks.
Entomology, plant pathology and virology are a few of the
disciplines covered by this well-reviewed series. It also covers
the spectrum of vectors from mosquitos and leafhoppers to
nematodes, and pathogens from viruses to mycoplasmas to protozoa.
Articles deal with the emerging science of vector ecology, and
consider both biotic and abiotic environmental influences on
disease transmission. As a form to present current thinking in this
field, the series is an important resource for researchers and
students involved in understanding and overcoming the many
vector-borne diseases of plants, animals, and humans.
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