... with starved bees, but, whether fed or starved, nurses had much higher FAS activity than similarly treated foragers, implicating reduced lipid synthesis as one component of foragers' low lipid stores. Finally, we used artificial diets with different amounts of protein and fat to precociously induce low...

... of the nutritional composition of larval diets (i.e. diet quality) on adult RMR has not been studied. Using in vitro rearing to control larval diet quality, we determined the effect of dietary protein and carbohydrate on honeybee survival to adulthood, time to eclosion, body mass/size and adult RMR. High...

...Daniel Stabler; Mushtaq Al-Esawy; Jennifer A. Chennells; Giorgia Perri; Alexandria Robinson; Geraldine A. Wright ABSTRACT Essential macronutrients are critical to the fitness and survival of animals. Many studies have shown that animals regulate the amount of protein and carbohydrate they eat...

...Lelei Wen; Xiaoguo Jiao; Fengxiang Liu; Shichang Zhang; Daiqin Li ABSTRACT Prey proteins and lipids greatly impact predator life-history traits. However, life-history plasticity offers predators the opportunity to tune the life-history traits in response to the limited macronutrients to allocate...

... a reduction in glycogen stores yet increase flight activity without changing rates of glycogen depletion. Drosophila Energy Metabolism Obesity Plasticity Protein Glycogen is a critical store of energy for supplying the energetic demands of locomotion in many animals ( Hochachka, 1985...

... h) in adult zebrafish fed with commercial pellets (51% protein, 2.12% ration). Compared with a fasted group, fed fish presented peak increases of oxygen consumption (78%), and carbon dioxide (80%) and nitrogen excretion rates (338%) at 7–8 h, and rates remained elevated at 10 h. The respiratory...

...Taehwan Jang; Kwang Pum Lee ABSTRACT Protein and carbohydrate are the two major macronutrients that exert profound influences over fitness in many organisms, including Drosophila melanogaster. Our understanding of how these macronutrients shape the components of fitness in D. melanogaster has been...

... at all. Cribellar Processing Uloboridae Filistatidae Silk Protein We all have experienced the effects of rubbing a plastic balloon against our hair: the single hairs are repelled from each other, but attracted towards the balloon. This is induced by Coulomb forces, also called...

... of foraging distance on individual German cockroaches by providing two foods differing in protein-to-carbohydrate ratio at opposite ends of long containers or adjacent to each other in short containers. Each food was nutritionally imbalanced, but the two foods were nutritionally complementary, allowing...

... characterized, and are likely to be more complex than simply changes in gene expression or protein modification. Finally, we present a hypothesis regarding an unexplored area for biochemical adaptation to ocean acidification. In this hypothesis, proteins and membranes exposed to the external environment...

...Daniel Stabler; Pier P. Paoli; Susan W. Nicolson; Geraldine A. Wright ABSTRACT Animals carefully regulate the amount of protein that they consume. The quantity of individual essential amino acids (EAAs) obtained from dietary protein depends on the protein source, but how the proportion of EAAs...

... long-term changes in nutrient metabolism in rainbow trout. Trout alevins received during the five first days of exogenous feeding either a hyperglucidic (40% gelatinized starch + 20% glucose) and hypoproteic (20%) diet (VLP diet) or a high-protein (60%) glucose-free diet (HP diet, control). Following...

... developmental stages and to examine whether the effects were more pronounced in larval stages developing in the open ocean. Oxygen consumption rate, total protein, dry mass, total lipids and C/N were determined in late-stage embryos, zoea I larvae and newly settled juveniles reared in ambient pH (7.93±0.06...

... their circulating initial levels of the stress hormone corticosterone, showed evidence for increased secretion of a hypothalamic stress peptide, vasotocin, used greater amounts of fat and protein energy reserves, and were more behaviorally active than birds in the constant feeding group. Overall, these findings...

.... Behav. 43 , 115 - 123 . Breuner C. W. , Orchinik M. ( 2002 ). Plasma binding proteins as mediators of corticosteroid action in vertebrates . J. Endocrinol. 175 , 99 - 112 . Breuner C. W. , Greenberg A. L. , Wingfield J. C. ( 1998 ). Noninvasive...

... and function of the proteins and genes contributing to the cycling of the clock in crayfish Procambarus clarkii are scarce. In this study, we investigated whether three proteins that interact in the feedback loop of the molecular clock described for Drosophila are expressed in the putative circadian pacemakers...

.... The observed movement of the CO molecule from the heme iron site to the internal cavities and the associated structural changes of the amino acid residues around the cavities confirm the integral role of the pores in forming a ligand migration pathway from the protein surface to the heme. These observations...

...Guojin Wu; Zandong Li SUMMARY It has been speculated that free amino acids digested from proteins in bird eggs are transported to the circulation for the nourishment of the embryo. In the present study, we found that early chicken embryo protein in the serum might be utilized efficiently...

... on the 23 August 2006 and 18 April 2007 and before PHA injection on the 11 September 2006 and 11 May 2007. Their tarsus lengths were recorded on the 31 July 2006 and 11 May 2007. The different dietary treatments commenced on the 15 July 2006. The S diet consisted of 20% protein, 0.4% vitamin, 42...

...Katarzyna Sobierajska; Hanna Fabczak; Stanislaw Fabczak SUMMARY Immunological techniques and high-resolution FRET analysis were employed to investigate the in vivo colocalization and interaction of phosducin(Pdc) with the βγ-subunits of G-protein (Gβγ) in the ciliate Blepharisma japonicum...