A new multistage dynamic model for biological control exemplified by the host–parasitoid system Spodoptera exigua–Chelonus oculator

Four noctuid larvae, Heliothis zea (Boddie), Spodoptera exigua (Hubner), Pseudoplusia includens (Walker), and S. ornithogalli (Guenee) were reared on semi-synthetic diet in which varying concentrations of the carbamate fungicide benomyl were incorporated. These larvae were exposed to parasitization by Cotesia (= Apanteles) marginiventris (Cresson), and the effect of the fungicide on parasitism and host survival determined. Successful parasite emergence from H. zea, S. exigua, and P. includens was significantly reduced (P = 0.01) as benomyl concentration increased. Parasite emergence from S. ornithogalli was reduced, but a significantly significant dosage response was not evident. Implications of these findings, including a possible deleterious effect on natural biological control following benomyl application, are discussed.

Download Full-text

Validation of a Comprehensive Process-Based Model for the Biological Control of Beet Armyworm, Spodoptera exigua, with Baculoviruses in Greenhouses

Biological Control ◽

10.1006/bcon.2001.0990 ◽

2002 ◽

Vol 23 (1) ◽

pp. 47-55 ◽

Cited By ~ 7

Author(s):

Felix J.J.A. Bianchi ◽

Wopke van der Werf ◽

Just M. Vlak

Keyword(s):

Biological Control ◽

Spodoptera Exigua ◽

Beet Armyworm

Download Full-text

Can mixtures of horizontally and vertically transmitted nucleopolyhedrovirus genotypes be effective for biological control of Spodoptera exigua?

Journal of Pest Science ◽

10.1007/s10340-016-0743-x ◽

2016 ◽

Vol 90 (1) ◽

pp. 331-343 ◽

Cited By ~ 2

Author(s):

Cristina Virto ◽

Trevor Williams ◽

David Navarro ◽

M. Mar Tellez ◽

Rosa Murillo ◽

...

Keyword(s):

Biological Control ◽

Spodoptera Exigua

Download Full-text

Biological Control of Beet Armyworm, Spodoptera exigua, with Baculoviruses in Greenhouses: Development of a Comprehensive Process-Based Model

Biological Control ◽

10.1006/bcon.2001.0989 ◽

2002 ◽

Vol 23 (1) ◽

pp. 35-46 ◽

Cited By ~ 21

Author(s):

Felix J.J.A. Bianchi ◽

Just M. Vlak ◽

Rudy Rabbinge ◽

Wopke Van der Werf

Keyword(s):

Biological Control ◽

Spodoptera Exigua ◽

Beet Armyworm

Download Full-text

Electron investigations of rhabdovirus-like particles in mexican bean beetles and crickets

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100082753 ◽

1978 ◽

Vol 36 (2) ◽

pp. 378-379

Author(s):

J. R. Adams ◽

G. J Tompkins ◽

A. M. Heimpel ◽

E. Dougherty

Keyword(s):

Biological Control ◽

Integrated Pest Management ◽

Pest Management ◽

Developmental Stages ◽

Management Program ◽

Acheta Domesticus ◽

Epilachna Varivestis ◽

House Cricket ◽

Similar Morphology ◽

Bean Beetle

As part of a continual search for potential pathogens of insects for use in biological control or on an integrated pest management program, two bacilliform virus-like particles (VLP) of similar morphology have been found in the Mexican bean beetle Epilachna varivestis Mulsant and the house cricket, Acheta domesticus (L. ).Tissues of diseased larvae and adults of E. varivestis and all developmental stages of A. domesticus were fixed according to procedures previously described. While the bean beetles displayed no external symptoms, the diseased crickets displayed a twitching and shaking of the metathoracic legs and a lowered rate of activity.Examinations of larvae and adult Mexican bean beetles collected in the field in 1976 and 1977 in Maryland and field collected specimens brought into the lab in the fall and reared through several generations revealed that specimens from each collection contained vesicles in the cytoplasm of the midgut filled with hundreds of these VLP's which were enveloped and measured approximately 16-25 nm x 55-110 nm, the shorter VLP's generally having the greater width (Fig. 1).

Download Full-text

Short-term volume and turgor regulation in yeast

Essays in Biochemistry ◽

10.1042/bse0450147 ◽

2008 ◽

Vol 45 ◽

pp. 147-160 ◽

Cited By ~ 12

Author(s):

Jörg Schaber ◽

Edda Klipp

Keyword(s):

Dynamic Model ◽

Volume Change ◽

Volume Regulation ◽

Time Course ◽

Osmotic Shock ◽

Intracellular Concentration ◽

Short Term ◽

Hydrodynamic Property ◽

Turgor Regulation ◽

Thermodynamic Framework

Volume is a highly regulated property of cells, because it critically affects intracellular concentration. In the present chapter, we focus on the short-term volume regulation in yeast as a consequence of a shift in extracellular osmotic conditions. We review a basic thermodynamic framework to model volume and solute flows. In addition, we try to select a model for turgor, which is an important hydrodynamic property, especially in walled cells. Finally, we demonstrate the validity of the presented approach by fitting the dynamic model to a time course of volume change upon osmotic shock in yeast.

Download Full-text