After molting, stomatopods can be evicted easily from home cavities by conspecifics because these marine crustaceans lose temporarily their body armor and the use of their raptorial appendages. Some newly molted stomatopods defend their cavities with a meral spread display, a signal correlated with attack when used by animals between molts. The use of the meral spread display actually increases...

introduction: induced molting is a process that stimulates natural molting events. when birds return to full feed, a new plumage develops and the birds resume egg peroduction at a higher rate with better egg quality. induced molting extends the productive liffe of commercial chicken flocks and results in substantial reduction in the number of chickens needed to produce the nation's egg supply. ...

This study investigated the combined effects of feeding ration and cheliped autotomy on intermolt duration, molting success, molt increments in size weight, ecdysteroid receptor gene (SpEcR) expression early juvenile mud crab Scylla paramamosain. Newly molted second stage crabs (C2) were subjected to four conditions; optimal, suboptimal (1/2 optimal), low (1/4 optimal) starvation, (intact vs. a...

A study of 1231 first cycle and 887 second cycle table egg flocks (by Bell and Adams) in the early 1980’s in California revealed a series of very important relationships. These relationships are essential to the decision of whether or not flocks should be molted and if so, when? If molting is to pay, the second cycle of production must yield high performance compared to a one cycle option. The ...

We evaluated the in vitro effects of estradiol, progesterone, and testosterone on the molting process, which is the initial and crucial step in the development of the muscular larvae (ML or L1) to adult worm. Testosterone had no significative effect on the molting rate of the parasite, however, progesterone decreased the molting rate about a 50% in a concentration- and time-independent pattern,...

20-Hydroxyecdysone (20E) and juvenile hormone (JH) control a variety of physiological events during insect development and metamorphosis. To understand how 20E and JH developmentally regulate energy metabolism in insects, we performed a genome-wide microarray analysis of fat body tissues isolated from the silkworm, Bombyx mori. Many genes involved in energy metabolism, including genes in the gl...

1. Larval-specific protein, LSP, reaches a peak concentration in cockroach hemolymph 2448 hr prior to ecdysis. 2. When ecdysis is delayed by autotomy-induced leg regeneration, LSP continues to accumulate and reaches a higher than normal peak concentration 28 hr prior to the delayed ecdysis. 3. Ecdysone inhibits the regeneration-induced delay and returns the normal pattern of ecdysis and LSP acc...

Th e energetically challenging periods of molting and breeding are usually temporally separated in temperate birds, but can occur simultaneously in tropical birds, a condition known as molt – breeding overlap. Here, we document great variation in the timing and duration of molting and breeding, and in the extent of molt – breeding overlap, among 87 species of understory passerines in central Am...

Recent studies have indicated that egg yolk immunoglobulins (Ig) can be used for therapeutic purposes and that yolk Ig levels are increased after molting of laying hens. The present study was performed to compare between the effects of two methods of induced molting namely alfalfa and zinc methods on serum and yolk IgY concentrations as well as their effects on the egg quality and immune status...

Induced molting improves egg producing functions in hens. We investigated the mechanism of oviducal regression during induced molting. Involvement of apoptosis and autolysis in the oviducal regression process was analyzed by terminal deoxynucleotidyl transferase (Tdt)-mediated biotinylated deoxyuridine triphosphates (dUTP) nick end-labeling (TUNEL) and an enzyme histochemistry for acid phosphat...