...Hubert Schwabl; Jesko Partecke ABSTRACT Developmental exposure of embryos to maternal hormones such as testosterone in the avian egg influences the expression of multiple traits, with certain effects being sex specific and lasting into adulthood. This pleiotropy, sex dependency and persistency may...

...Lingjun Si; Luqing Pan; Xin Zhang; Hongdan Wang; Cun Wei ABSTRACT The transport of ions and ammonia in gills may be regulated by neuroendocrine factors. In order to explore the mechanism of dopamine (DA) regulation, we investigated hemolymph neuroendocrine hormones, gill intracellular signaling...

...Lingjun Si; Luqing Pan; Hongdan Wang; Xin Zhang ABSTRACT Effects of ammonia-N (0.05, 2, 10 and 20 mg l −1 ) on the neuroendocrine regulation of ammonia transport were investigated in Litopenaeus vannamei . The results showed that corticotrophin-releasing hormone, adrenocorticotropic hormone...

... remodelling during metamorphosis. The age-specific effects of corticosterone application indicate that this hormone can act as an important regulator of respiratory control development in Xenopus tadpoles. Concurrent changes in GABAergic neurotransmission probably contribute to this maturation process...

... increase. Last instars that have fed for a particular length of time may initiate their metamorphic molt when both threshold levels of nutrient reserves and ecdysteroid titer have been met. Future studies will lead to a conceptual model specific for the nutritional and hormonal regulation of mosquito post...

... electrophysiological studies indicate that one target of hemolymph-borne CabTRP Ia is the foregut musculature. Here, no direct CabTRP Ia innervation is present, yet several gastric mill and pyloric muscles are nonetheless modulated by hormonally relevant concentrations of the peptide. Collectively,our findings show...

...James D. Baker; James W. Truman SUMMARY Adult insects achieve their final form shortly after adult eclosion by the combined effects of specialized behaviors that generate increased blood pressure, which causes cuticular expansion, and hormones, which plasticize and then tan the cuticle. We examined...