The release of prothoracicotropic hormone, PTTH, or its blockade is the major endocrine switch regulating the developmental channel either to metamorphosis or to pupal diapause in the Chinese silk moth, Antheraea pernyi. We have cloned cDNAs encoding two types of serotonin receptors (5HTRA and B). 5HTRA-, and 5HTRB-like immunohistochemical reactivities (-ir) were colocalized with PTTH-ir in two...

Antheraea assamensis Helfer is an endemic non-mulberry lepidopteran species of North East India with high commercial demand for its golden hued silk. suffers from a protozoan disease pebrine which lead to death the silkworm. In this study, effect various factors (starvation, feeding, temperature, pH, Ca ion and larval stage) in regulation amylase secretion compared healthy diseased muga Moreove...

Integrated phylogenetic and developmental analyses should enhance our understanding of morphological evolution and thereby improve systematists' ability to utilize morphological characters, but case studies are few. The eggshell (chorion) of Lepidoptera (Insecta) has proven especially tractable experimentally for such analyses because its morphogenesis proceeds by extracellular assembly of prot...

Yellow fever virus (Asibi strain) has been grown successfully in insect tissue culture cell lines from the moth Antheraea eucalypti and the mosquito Aedes aegypti. Increases in virus 1iter (MICLD5, of two to three logs were evident in 24 to 72 hours at 26 C in a hemolymph-free medium. Virusinfected A. eucalypti cells remained healthy and in a state of reproduction throughout 12 weeks' incubatio...