... processes and energy consumption due to homeostatic regulation of the midgut. While it is obvious that the digestive system is the major organ in marine larvae that controls the animal's energy budget, it remained unknown which digestive enzymes are particularly involved in digestive function. The present...

... from hatching to adulthood, but does occur when nestlings of the former species adjust to a higher-starch diet. Digestive enzymes Transcriptional control Phenotypic flexibility Major changes in intestinal enzymes occur during development in vertebrates, but only in mammals...

... ). Metabolic programming of digestive enzymes by carbohydrate or lipid conditioning has already been demonstrated in fish ( Geurden et al., 2007 ; Vagner et al., 2007 ); however, the present study suggests for the first time that such nutritional programming could also occur for proteins, even though...

.... Mechanisms associated with digestive enzymes and neuroendocrine hormones underpinning the plasticity were also examined. Females significantly increased energy intake, digestibility, digestive tract mass and the activity of stomach pepsin and small intestine maltase, sucrase and aminopeptidase in peak...

...Paweł Brzęk; Kevin D. Kohl; Enrique Caviedes-Vidal; William H. Karasov SUMMARY The ‘adaptive modulation hypothesis’ predicts that activity of digestive enzymes should match the amount of their substrates in diet. Interestingly, many passerine birds do not adjust the activity of intestinal...

... restriction digestive organs digestive enzymes body composition skeletal growth Chronic, moderate food shortage can occur during development of altricial birds in the wild because of fluctuating environmental conditions, inadequate parental delivery of food to the nest or sibling competition...

...Kevin D. Kohl; M. Denise Dearing SUMMARY Many plants produce plant secondary compounds (PSCs) that bind and inhibit the digestive enzymes of herbivores, thus limiting digestibility for the herbivore. Herbivorous insects employ several physiological responses to overcome the anti-nutritive effects...

... a switch in their assigned diet at 12 days of age. We found evidence for the presence of an internal, presumably genetic, program for changes in the activity of maltase and sucrase, which was, however, significantly affected by diet composition (i.e. environmental factor). Digestive enzyme activity in 30...

... plasticity is not necessary and flexibility of digestive physiology should be lower. Recently, we found that ontogenetic changes in the activity of digestive enzymes in house sparrow, a species that gradually consumes more carbohydrates during ontogeny, are strongly modified by diet composition...

..., between biological capacities and their natural loads. Experientia 48 , 551 -557. Drewe, K. E., Horn, M. H., Dickson, K. A. and Gawlicka, A. ( 2004 ). Insectivore to frugivore: ontogenetic changes in gut morphology and digestive enzyme activity in the characid fish Brycon guatemalensis from Costa...