Terry Boswell

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Migration is a key life cycle stage in nearly 2000 species of birds and is a greatly appreciated phenomenon in both cultural and academic arenas. Despite a long research tradition concerning many aspects of migration, investigations of hormonal contributions to migratory physiology and behavior are more limited and represent a comparatively young research(More)
The aim of the present study was to determine the relationship between seasonal variation in levels of insulin, cortisol, and corticosterone and body mass in a natural population of golden-mantled ground squirrels (Spermophilus saturatus) over the active season, from April to August. The body mass of females is at an active season minimum on emergence from(More)
To determine if altered sensitivity to neuropeptide Y (NPY) underlies premigratory fattening, white-crowned sparrows held on short day length (9:15-h light-dark) received injections into the third ventricle (ivt) of saline or several doses of NPY. An inverted-U function occurred with food intake increasing 30 and 60 min after doses of 1.0 and 2.0 micrograms(More)
Migratory birds rely on increased fat storage and fatty acid utilization to meet seasonal changes of energy expenditure and as a result increase food intake and fat stores before migration. To determine whether their feeding behavior is sensitive to carbohydrate and/or fatty acid utilization, white-crowned sparrows maintained on short daylength (9L15D) were(More)
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Neuropeptides such as neuropeptide Y (NPY) and galanin may play a role in regulating the pronounced seasonal changes in food intake shown by golden-mantled ground squirrels (Spermophilus saturatus). We used in situ hybridization histochemistry to localize the expression of NPY and galanin mRNA in the hypothalamus of normally feeding animals. NPY mRNA was(More)
The contemporary era is one of both accelerated economic globalization and rising inequality. International markets for goods, services, and capital have become increasingly integrated and since the 1980s this trend has shown a sharply upward curve (Rodrick 1997; Brady and Wallace 2000). Economic inequality has increased during this time period as well,(More)
This paper describes a method for chronically cannulating the third ventricle of the white-crowned sparrow, a small passerine bird, without damaging the midsagittal sinus. The method is reliable and chronic over at least 1 month. The technique was verified by assessing the effects of angiotensin II (ANG II) on inducing drinking behavior. All birds rapidly(More)
Neuropeptides such as corticotropin-releasing factor (CRF) may play a role in regulating the pronounced seasonal changes in food intake shown by white-crowned sparrows (Zonotrichia leucophrys gambelii). White-crowned sparrows held on short day length received injections into the third ventricle (icv) of saline or 5.0, 15.0, and 30 microg/kg. Meal size over(More)
This article contrasts two fundamentally world-economy. The article begins by sketching different understandings of economic growth the history of these two perspectives in recent and “development” that lead to diametrically decades and reflecting on the ideological and opposed approaches to how to deal with epistemological contexts of their appearance(More)