Titlebook: Neurohormonal Techniques in Insects; Thomas A. Miller Book 1980 Springer-Verlag New York Inc 1980 Insects.Insekten.Neuroendokrinologie.ins

眼界

Bioassay of Diuretic Hormone in Rhodnius,iner 1976). . is a bloodsucking insect, which at infrequent intervals takes very large meals of blood, each of which in the preadult stages can be up to 12 times as large as the insect itself. Not surprisingly, this raises many problems for the insect. Among them is how to allow for the great disten

MURKY

,Diuretic Hormone—Extraction and Chemical Properties,he characterization of an insect diuretic hormone (DH) has proved to be an elusive goal. The hormonal control of diuresis has been reported for several insects (see Table 4–1 for a summary). In general, it appears that at least two distinct anatomical designs exist for the synthesis, storage, and re

自恋

蚊子

Bursicon,the old cuticle; stretching and expansion of the new cuticle; and stabilization of the stretched cuticle in its expanded form by sclerotization. Darkening of the cuticle is frequently associated with the sclerotization process.

憎恶

Neurohormonal Factors Involved in the Control of Pupariation,the action of the molting hormone, supposedly produced and released by the ring gland, an endocrine organ comprising the homologues of the corpora allata, corpora cardiaca, and prothoracic glands. Fraenkel’s (1934, 1935) classic experiments with ligated . larvae revealed that hormonal conditions res

有毒

Cuticle Plasticizing Factors, facilitates their escape from the exuvium and also the expansion and unfolding of the new cuticle to the larger size of the next instar. In most cases the new cuticle is “tanned” soon after ecdysis. Tanning is a poorly understood, complex process whereby cuticle proteins are chemically cross-linked

frivolous

Eclosion Hormones,rmone (Truman and Riddiford 1970; Truman 1971). The release of this neurohormone into the blood is a vital link in a chain of events that leads from a circadian clock, located in the brain (Truman 1972), to the performance of a stereotyped sequence of behaviors that effect the moth’s escape from the

Commonwealth

Diapause Hormones,interruption of the development even under the conditions favored at the moment. Diapause is generally associated with a low rate of metabolism and low susceptibility toward dryness, unfavorable temperature (coldness in winter), and respiratory toxins such as carbon monoxide and hydrogen cyanide. Re

Intentional

Prothoracicotropic Hormone,s later, Wigglesworth (1940) clearly demonstrated that the molting of the bug . was initiated by a hormonal factor that originated from the dorsal region of the protocerebrum containing neurosecretory cells. This brain hormone was then shown by Williams (1947, 1952) to induce molting by stimulating

macrophage