... transport sites in the gills, whereas efflux was reduced by a reduction in branchial ionic permeability; both responses are mediated hormonally. Although the hormonal control mechanisms are as yet poorly defined, we argue that growth hormone and prolactin are responsible for the regulation of influx...

... determined gravimetrically. Our results support the proposal that cockroach cuticle permeability is hormonally controlled, to the extent that compounds extracted from the brain have been shown to be capable of inducing permeability change over relatively short periods. Fresh brain homogenate injections from...

... of Biologists 1988 Periplaneta cuticle desiccation water loss hormonal control decapitation neuroendocrine The suggestion of Wall (1967) that the effects of antidiuretic hormone in the cockroach, Periplaneta americana , could involve restriction of integumentary water loss...

..., College of Education, University of Baghdad, Iraq. 27 05 1987 © 1987 by Company of Biologists 1987 Periplaneta cuticle desiccation water loss permeability hormonal control decapitation The major avenues for water loss from the cockroach are the excretory system...

... 1986 by Company of Biologists 1986 Periplaneta water loss cuticle hormonal control decapitation Hormonal inhibition of integumentary water loss has been proposed on the basis of increased weight loss following decapitation in Periplaneta americana (Treherne & Willmer, 1975a...

...., New Haven, Connecticut, U.S.A. 06510. © 1983 by Company of Biologists 1983 Chloride transport insect hindgut-rectum hormonal control There is evidence for active chloride transport across six epithelia from 17 different insect species; however, little is known regarding...