Stress hormones link food availability and population processes in seabirds
نویسندگان
چکیده
منابع مشابه
Postprandial Oxidative Stress and Gastrointestinal Hormones: Is There a Link?
BACKGROUND Abnormal postprandial elevation of plasma glucose and lipids plays an important role in the pathogenesis of diabetes and strongly predicts cardiovascular mortality. In patients suffering from type 2 diabetes (T2D) postprandial state is associated with oxidative stress, cardiovascular risk and, probably, with impairment of both secretion and the effect of gastrointestinal peptides. Ev...
متن کاملStress Hormones and Their Regulation in a Captive Dolphin Population
This research aids our understanding of how the stress-response operates in marine mammals by evaluating markers of stress in a captive dolphin population. This research effort will determine baseline levels of putative stress hormones and evaluate the functional consequences of increased stress in the bottlenose dolphin (Tursiops truncatus) through the assessment of non-traditional biochemical...
متن کاملAvailability of Food and the Population Dynamics of Arvicoline Rodents
Availability of food may play a number of different dynamical roles in rodent–vegetation systems. Consideration of a suite of rodent–vegetation models, ranging from very simple ones to a model of medium complexity tailored to a specific system (brown lemmings at Point Barrow, Alaska, USA), suggested several general principles. If vegetation grows logistically following an herbivory event (a sta...
متن کاملFeather corticosterone reveals developmental stress in seabirds.
In nest-bound avian offspring, food shortages typically trigger a release of the stress hormone corticosterone (CORT). Recent studies indicate that CORT is passively deposited in the tissue of growing feathers and thus may provide an integrated measure of stress incurred during development in the nest. The current hypothesis predicts that, assuming a constant rate of feather growth, elevated CO...
متن کاملMechanisms of population differentiation in seabirds.
Despite recent advances in population genetic theory and empirical research, the extent of genetic differentiation among natural populations of animals remains difficult to predict. We reviewed studies of geographic variation in mitochondrial DNA in seabirds to test the importance of various factors in generating population genetic and phylogeographic structure. The extent of population genetic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2007
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps07074