Results 181 to 190 of about 58,344 (208)

Temporal coding of pheromone pulses and trains in Manduca sexta

Journal of Comparative Physiology A, 1992
We investigated the ability of pheromone-sensitive olfactory receptors of male Manduca sexta to respond to 20-ms pulses of bombykal, the major component of the conspecific pheromonal blend. Isolated pulses of bombykal elicited a burst of activity which decreased exponentially with a time constant of 160-250 ms.
Marion-Poll, Frédéric, Tobin, T.R.
openaire   +4 more sources

Intracellular calcium in prothoracic glands of Manduca sexta

Journal of Insect Physiology, 1998
Cytosolic free calcium was measured in individual prothoracic gland cells of Manduca larvae with Fura-2. During the last larval instar there was no correlation between intracellular calcium concentration and ecdysteroid secretion by the glands. The addition of prothoracicotropic hormone (PTTH) from brains of Manduca larvae to prothoracic glands in ...
openaire   +2 more sources

Proteolytic Activation of Prophenoloxidase in an Insect Manduca Sexta

2001
Phenol oxidase (PO) (EC1.14.18.1) is important in cuticular sclerotization and in defense against pathogens and parasites (Soderhall et al., 1996; Sugumaran, 1996; Ashida and Brey, 1998). PO catalyzes hydroxylation of monophenols to o-diphenols and oxidation of o-diphenols to quinones.
H, Jiang, Y, Wang, M R, Kanost
openaire   +2 more sources

Control of ecdysis by heat in Manduca sexta

Journal of Insect Physiology, 1975
Under constant-light conditions, adult Manduca sexta emerge approximately 5 hr after the middle of a 3 hr 3°C heat pulse. The insects can be entrained to a heat cycle in 3 days. Entrainment will decrease at approximately the same rate. Photic signals can modify the precision of the response but, when the insects are presented with conflicting photic ...
Richard A. Lockshin, Martha Rosett, Kathleen Srokose   +2 more
openaire   +1 more source

Lysozyme in the pericardial complex of Manduca sexta

Insect Biochemistry, 1990
The pericardial cell-heart complex (pericardial complex) of fifth instar Manduca sexta larvae has been shown to contain, to synthesize and to release lysozyme. Lysozyme activity was present in homogenates of pericardial complex. Immunocytochemical analysis demonstrated that lysozyme in the pericardial complex was located in pericardial cells. Injection
Virginia W. Russell, Peter E. Dunn
openaire   +1 more source

Metamorphosis of the ecdysis motor pattern in the hawkmoth,Manduca sexta

Journal of Comparative Physiology A, 1988
The hawkmoth, Manduca sexta, undergoes periodic molts during its growth and metamorphosis. At the end of each molt, the old cuticle is shed by means of a hormonally-activated ecdysis behavior. The pharate adult, however, must not only shed its old cuticle but also dig itself out from its underground pupation chamber.
K A, Mesce, J W, Truman
openaire   +2 more sources

The rôle of ecdysone in pupation of Manduca sexta

Journal of Insect Physiology, 1976
Abstract Slow infusions of β-ecdysone are more effective in eliciting a normal physiological response than are discrete injections of the hormone. Infusion of β-ecdysone into final instar larvae in the presence of juvenile hormone (JH) induces apolysis and the deposition of a normal larval cuticle.
openaire   +1 more source

Juvenile Hormone and Ovarian Growth in Manduca sexta

International Journal of Invertebrate Reproduction, 1979
Lynn Riddiford
exaly  

Pyrosequencing the Manduca sexta Larval Midgut Transcriptome: Messages for Digestion, Detoxification and Defence

Insect Molecular Biology, 2010
Stuart Edward Reynolds, David G Heckel, Heiko Vogel   +2 more
exaly  

Protease Inhibitor Controls Prophenoloxidase Activation in Manduca sexta

FEBS Letters, 1986
Manickam Sugumaran, Steven J Saul, S J Saul   +2 more
exaly