An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... Froeschner (1988) records 23 species of stink bugs (Hemiptera: Heteroptera: Pentatomidae) as occurring in Washington state. Based onmaterial primarily housed in the M.T. James Entomological Collection at Washington State University, the number of species is increased to 47. Species recorded by Froeschner (1988) but not found in our collections are: Apateticus crocatus (Uhler), Chlorochroa rossiana ...
... Habitat manipulation in agroecosystems can influence predator–prey interactions. In this study, we collected foliar predators from field potato plots with different mulch treatments and assayed them for DNA of the target prey, Leptinotarsa decemlineata (Say), using species-specific primers. Concurrently, L. decemlineata larval abundance and plant damage were recorded from the same plots. Predator ...
... Plant cystatins, similar to other defense proteins, include hypervariable, positively selected amino acid sites presumably impacting their biological activity. Using 29 single mutants of the eighth domain of tomato (Solanum lycopersicum) multicystatin, SlCYS8, we assessed here the potential of site-directed mutagenesis at positively selected amino acid sites to generate cystatin variants with impr ...
... Fragments of two artificial diet up-regulated and two prey up-regulated transcripts were isolated from the predatory Pentatomid Perillus bioculatus using suppression subtractive hybridization. A BlastX search found similarities for two diet-upregulated clones, i.e., the tyrosine-3-monooxygenase gene and the gene for the chitin binding protein, Gasp. The probe generated from the tyrosine-3-monooxyg ...
... Recent developments in the area of nutrigenomics hold the promise of providing valuable information about the impact of nutrition on a wide range of biochemical parameters by investigating how nutrition alters global gene expression patterns. Our goal is to use a nutrigenomics approach to identify insect molecular markers that could be used as early indicators of insect responses to different nutr ...
... Selected morphological and physiological properties of the corpus allatum (CA)––corpus cardiacum (CC) complex from the two-spotted stinkbug, Perillus bioculatus (Hemiptera: Pentatomidae), were studied. The CAs play an important role in insect physiology because of their production of the juvenile hormones (JHs), i.e., key hormones involved in development and reproduction. We found that the P. bioc ...
... The effect of juvenile hormone (JH) III on the hemolymph composition of vitellogenin was examined in Perillus bioculatus. Adult females were treated topically with JH III, and the premature presence of vitellogenin in the hemolymph was then detected using electrophoresis and Western blot analyses. JH III treatment resulted in a dose-dependent early production of vitellogenin that was detectable 48 ...
... The impact of a zoophytogenous, insect-free artificial diet on the developmental rate, life history parameters, and fertility was examined over 11 consecutive generations for domesticated Perillus bioculatus (F.) (Heteroptera: Pentatomidae). This study showed that when fed an insect-free artificial diet during both the nymphal and adult stages, developmental times were prolonged, and the net repro ...
... Perillus bioculatus (F.) can be maintained in the laboratory on a diet of Heliothis virescens F. larvae if supplemented with Colorado potato beetle (CPB) eggs. Here we demonstrate that an artificial diet can replace the CPB eggs and maintain the colony for at least three generations. This enables us to maintain our Perillus colonies at high numbers independent of the normal fluctuations in our CPB ...
... Control females of the twospotted stink bug, Perillus bioculatus (F.), and those given an artificial diet mated repeatedly over their lifetimes when held with males. The average number of observed matings was 4 and 8.4 in the controls and those given the artificial diet, respectively. Mating and an adequate diet are prerequisites for laying a full compliment of eggs in this insect. Virgins laid an ...
ovarian follicles; artificial diets; biological control agents; age; predators; ovarioles; sexual reproduction; Perillus bioculatus; mating behavior; vitellogenesis
Abstract:
... A method is presented to quantitatively score the degree of ovarian maturation in a predacious pentatomid with asynchronous follicle development. The effects of artificial diet and mating status on ovarian maturation rates were examined. Ovarian scores were not influenced by mating status but were significantly lower in females fed the artificial diet. Ovarian follicles start forming when females ...
sex pheromones; Oplomus dichrous; bioassays; spectral analysis; Perillus bioculatus; synthesis
Abstract:
... Racemic 6,10,13-trimethyl-1-tetradecanol has been synthesized. Successive elaboration of the molecule using 5-methyl-2-hexanone as the carbon-terminal fragment gave the desired alcohol in a 4% overall yield over 13 steps. Neglecting stereochemistry, the product was shown to be identical to the alcohol previously identified from the sternal glands of maleStiretrus anchorago. It attracts both adult ...