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Full-Text Articles in Entomology
Juvenile Hormone Regulation Of Female Reproduction In The Common Bed Bug, Cimex Lectularius, Hemant Gujar, Subba Reddy Palli
Juvenile Hormone Regulation Of Female Reproduction In The Common Bed Bug, Cimex Lectularius, Hemant Gujar, Subba Reddy Palli
Entomology Faculty Publications
To begin studies on reproduction in common bed bug, Cimex lectularius, we identified three genes coding for vitellogenin (Vg, a protein required for the reproductive success of insects) and studied their hormonal regulation. RNA interference studied showed that expression of Vg3 gene in the adult females is a prerequisite for successful completion of embryogenesis in the eggs laid by them. Juvenile hormone (JH) receptor, Methoprene-tolerant (Met), steroid receptor coactivator (SRC) and GATAa but not ecdysone receptor (EcR) or its partner, ultraspiracle (USP) are required for expression of Vg genes. Feeding and mating working through Vg, Met, SRC, EcR, and …
Krüppel Homolog 1 And E93 Mediate Juvenile Hormone Regulation Of Metamorphosis In The Common Bed Bug, Cimex Lectularius, Hemant Gujar, Subba Reddy Palli
Krüppel Homolog 1 And E93 Mediate Juvenile Hormone Regulation Of Metamorphosis In The Common Bed Bug, Cimex Lectularius, Hemant Gujar, Subba Reddy Palli
Entomology Faculty Publications
The common bed bug is an obligate hematophagous parasite of humans. We studied the regulation of molting and metamorphosis in bed bugs with a goal to identify key players involved. qRT-PCR studies on the expression of genes known to be involved in molting and metamorphosis showed high levels of Krüppel homolog 1 [Kr-h1, a transcription factor that plays key roles in juvenile hormone (JH) action] mRNA in the penultimate nymphal stage (N4). However, low levels of Kr-h1 mRNA were detected in the fifth and last nymphal stage (N5). Knockdown of Kr-h1 in N4 resulted in a precocious development of adult …