The probable significance of tracheal tufts in the 8th abdominal segment of Heliothis virescens (F.) on the development of its parasitoid, Toxoneuron nigriceps (Viereck)

2009 ◽  
Vol 55 (9) ◽  
pp. 769-773 ◽  
Author(s):  
Asha Rao ◽  
Ruth E. Henderson ◽  
S. Bradleigh Vinson
Keyword(s):  
Heliothis Virescens ◽  
Abdominal Segment ◽  
Probable Significance ◽  
Toxoneuron Nigriceps

Juvenile hormone synthesis, metabolism, and resulting haemolymph titre in Heliothis virescens larvae parasitized by Toxoneuron nigriceps

2003 ◽  
Vol 49 (11) ◽  
pp. 1021-1030 ◽  
Author(s):  
Sheng Li ◽  
Patrizia Falabella ◽  
Indira Kuriachan ◽  
S.Bradleigh Vinson ◽  
David W Borst ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Heliothis Virescens ◽  
Hormone Synthesis ◽  
Toxoneuron Nigriceps

Toxoneuron nigriceps parasitization delays midgut replacement in fifth-instar Heliothis virescens larvae

2008 ◽  
Vol 332 (2) ◽  
pp. 371-379 ◽  
Author(s):  
Gianluca Tettamanti ◽  
Annalisa Grimaldi ◽  
Francesco Pennacchio ◽  
Magda de Eguileor
Keyword(s):  
Heliothis Virescens ◽  
Toxoneuron Nigriceps

Comparison of Searching Behavior of Parasitoid, Toxoneuron nigriceps Vierick, for Three Tobacco Herbivores

2006 ◽  
Vol 41 (4) ◽  
pp. 321-328 ◽  
Author(s):  
P. Glynn Tillman
Keyword(s):  
Heliothis Virescens ◽  
Plant Volatiles ◽  
Helicoverpa Zea ◽  
Searching Behavior ◽  
Host Searching ◽  
Suitable Host ◽  
Induced Plant Volatiles ◽  
Herbivore Induced Plant Volatiles ◽  
Toxoneuron Nigriceps ◽  
Lepidoptera Noctuidae

Host searching behavior of females of the endoparasitoid Toxoneuron nigriceps Vierick (Hymenoptera: Braconidae) was observed in the field for three tobacco herbivores, Heliothis virescens (F.), Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), and Manduca sexta L. (Lepidoptera: Sphingidae). The only developmentally suitable host for the parasitoid was H. virescens. Hovering, searching, and oviposition (for plants with herbivores) by T. nigriceps were observed for a combination of two plant types, plants with only herbivore-induced plant volatiles or damaged plants with herbivores, and three insect species. The six treatments were as follows: (1) plants with only H. virescens-induced plant volatiles, (2) plants with only H. zea-induced plant volatiles, (3) plants with only M. sexta-induced plant volatiles, (4) plants damaged by H. virescens, (5) plants damaged by H. zea, and (6) plants damaged by M. sexta. Parasitoid females readily hovered around and searched on plants of both types. However, females spent more time foraging for H. virescens than for the nonhosts, H. zea and M. sexta. For plants with only herbivore-induced plant volatiles, T. nigriceps females spent more time searching on H. virescens plants than on H. zea and M. sexta plants. For damaged plants, parasitoid females visited more H. virescens plants than M. sexta plants and spent more time searching for H. virescens larvae than for M. sexta and H. zea larvae. Even though T. nigriceps females laid eggs in M. sexta and H. zea larvae, oviposition was higher for H. virescens than for the nonhosts. In conclusion, T. nigriceps females utilized more of their energy searching for and parasitizing H. virescens over the nonhosts on tobacco.

scholarly journals Gambling problems in bipolar disorder in the UK: Prevalence and distribution

2015 ◽  
Vol 207 (4) ◽  
pp. 328-333 ◽  
Author(s):  
Lisa Jones ◽  
Alice Metcalf ◽  
Katherine Gordon-Smith ◽  
Liz Forty ◽  
Amy Perry ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Problem Gambling ◽  
Severity Index ◽  
Gambling Problems ◽  
Rapid Cycling ◽  
Probable Significance ◽  
History Of ◽  
Gambling Severity ◽  
The Uk

BackgroundNorth American studies show bipolar disorder is associated with elevated rates of problem gambling; however, little is known about rates in the different presentations of bipolar illness.AimsTo determine the prevalence and distribution of problem gambling in people with bipolar disorder in the UK.MethodThe Problem Gambling Severity Index was used to measure gambling problems in 635 participants with bipolar disorder.ResultsModerate to severe gambling problems were four times higher in people with bipolar disorder than in the general population, and were associated with type 2 disorder (OR = 1.74, P = 0.036), history of suicidal ideation or attempt (OR = 3.44, P = 0.02) and rapid cycling (OR = 2.63, P = 0.008).ConclusionsApproximately 1 in 10 patients with bipolar disorder may be at moderate to severe risk of problem gambling, possibly associated with suicidal behaviour and a rapid cycling course. Elevated rates of gambling problems in type 2 disorder highlight the probable significance of modest but unstable mood disturbance in the development and maintenance of such problems.

scholarly journals Isolation and Sequencing of cDNA Clones Coding for Juvenile Hormone Esterase from Heliothis virescens

1989 ◽  
Vol 264 (21) ◽  
pp. 12419-12425 ◽  
Author(s):  
T N Hanzlik ◽  
Y A I Abdel-Aal ◽  
L G Harshman ◽  
B D Hammock
Keyword(s):  
Juvenile Hormone ◽  
Heliothis Virescens ◽  
Cdna Clones ◽  
Juvenile Hormone Esterase

Oxidative Activity of Aortic Tissue of Man, the Rabbit and the Dog, With Special Reference to Succinic Dehydrogenase and Cytochrome Oxidase

1958 ◽  
Vol 195 (2) ◽  
pp. 476-480 ◽  
Author(s):  
Nelicia Maier ◽  
Henry Haimovici
Keyword(s):  
Special Reference ◽  
Cytochrome Oxidase ◽  
Abdominal Aorta ◽  
Abdominal Segment ◽  
Species Difference ◽  
Succinic Dehydrogenase ◽  
Hepatic Tissue ◽  
Human Aorta ◽  
Aortic Tissue ◽  
Enzymatic Systems

Succinic dehydrogenase and cytochrome oxidase activities were determined in homogenates of three aortic segments (ascending and arch, descending thoracic, abdominal) and liver of man, the rabbit and the dog. Both enzymes exhibited the lowest activity in human aorta. Succinic dehydrogenase exhibited the highest activity in the thoracic aorta of the dog and intermediate activity in the latter's abdominal segment and the rabbit's aorta. Cytochrome oxidase, in contrast, exhibited the highest activity in the rabbit's aorta. A slight gradient of decreasing activity from thoracic to abdominal aorta was noted for cytochrome oxidase in both the rabbit and dog and for succinic dehydrogenase in the rabbit, whereas a significant decrease in the latter enzyme was noted in the abdominal segment of the dog. No gradient of activity was apparent in man. Liver exhibited the lowest activity for both enzymes in man, highest in the dog and intermediate in the rabbit. The above findings suggest a biologic species difference between the aorta of man, the rabbit and the dog, which may be partly ascribed to a difference in the components of the above two enzymatic systems. The same species difference holds true for hepatic tissue.

Morphology of the first instar nymph of Leucaspis loewi Colvée (Hemiptera: Coccinea: Diaspididae)

2012 ◽  
Vol 81 (1) ◽  
pp. 43-47
Author(s):  
Elżbieta Podsiadło ◽  
Anna Mazurkiewicz
Keyword(s):  
Abdominal Segment ◽  
Instar Nymph ◽  
First Instar ◽  
Campaniform Sensillum ◽  
Anterior Spiracle

Morphology of the first instar nymph of Leucaspis loewi Colvée (Hemiptera: Coccinea: Diaspididae) The first instar nymph of Leucaspis loewi Colvée is redescribed and illustrated. The sex has not been determined. It has 5-segmented antennae, one trilocular disc pore associated with the anterior spiracle, one pair of well-developed lobes, and fimbriate plates on all abdominal segments. Tibia and tarsus are not fused - they are separated from each other by a septum. A campaniform sensillum is always present at the bases of the tarsi. Dorsal submedian setae are present on each abdominal segment 1-7.

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