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1. The commerce of Cracow, 1500–1795.

Author

Carter, F. W.

Abstract

The period known as the ‘Golden Age of Cracow’ covered the first half of the sixteenth century and roughly coincided with the reign of King Zygmunt Stary (Sigismund the Old) from 1506 to 1548. The vigorous development of intellectual life in the city, combined with foreign contacts and a flourishing artistic life was supported by commercial prosperity. This was reflected on a larger scale within Poland, expressing itself in the wealth of the country and a favourable growth in foreign trade. Raw materials such as grain, timber, livestock, hemp, flax and potash led to a lively export trade, especially with the Low Countries and England; the production of raw materials, however, was in the hands of the propertied Polish nobility who were gradually becoming farming entrepreneurs. Here one sees the first hint of looming disaster for Cracow, which helped precipitate the city's decline. Not only in Poland but also in other parts of Eastern Europe, the nobility were taking advantage of the rural origins for raw materials such as grain and wresting control of them from urban merchants; in Poland the nobility decisively asserted its dominance over the towns which led to a steady flow of restrictions on the wealth and authority of such places as Cracow. The city also suffered from external factors; the great geographical discoveries had opened up new sea and ocean trade routes, while the old land routes, on which Cracow was so dependent, gradually diminished in importance. Moreover, following the Union of Poland and Lithuania in 1569, Cracow found itself tucked away in the south-west corner of Poland and had to cede its prime position in Poland to Warsaw. [ABSTRACT FROM AUTHOR]

Published
1994
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2. Geographic variation in the status signals of Polistes dominulus paper wasps

Author

Oksana Skaldina, Elizabeth A. Tibbetts, Amy L. Toth, Vera Zhao, Maksim Skaldin, James Dale, and Laura Beani

Subjects
Paper, Evolutionary Processes, Animal Evolution, Wasps, lcsh:Medicine, Parasitism, Geographic variation, Hierarchy, Social, Biology, Body size, Environment, Intraspecific competition, Behavioral Ecology, Animals, Body Size, Experimental work, Animal communication, Adaptation, lcsh:Science, Melanins, Hungary, Evolutionary Biology, Multidisciplinary, Polistes dominulus, Geography, Ecology, Animal Behavior, Pigmentation, lcsh:R, Staus signals, paper wasps, facial patterns, strepsiptera, Organismal Evolution, Animal Communication, Italy, Evolutionary biology, Evolutionary Ecology, Developmental plasticity, lcsh:Q, Female, Zoology, Entomology, Research Article
Abstract

Understanding intraspecific geographic variation in animal signals poses a challenging evolutionary problem. Studies addressing geographic variation typically focus on signals used in mate-choice, however, geographic variation in intrasexual signals involved in competition is also known to occur. In Polistes dominulus paper wasps, females have black facial spots that signal dominance: individuals wasps with more complex 'broken' facial patterns are better fighters and are avoided by rivals. Recent work suggests there is dramatic geographic variation in these visual signals of quality, though this variation has not been explicitly described or quantified. Here, we analyze variation in P. dominulus signals across six populations and explore how environmental conditions may account for this variation. Overall, we found substantial variation in facial pattern brokenness across populations and castes. Workers have less broken facial patterns than gynes and queens, which have similar facial patterns. Strepsipteran parasitism, body size and temperature are all correlated with the facial pattern variation, suggesting that developmental plasticity likely plays a key role in this variation. First, the extent of parasitism varies across populations and parasitized individuals have lower facial pattern brokenness than unparasitized individuals. Second, there is substantial variation in body size across populations and a weak but significant relationship between facial pattern brokenness and body size. Wasps from populations with smaller body size (e.g. Italy) tend to have less broken facial patterns than wasps from populations with larger body size (e.g. New York, USA). Third, there is an apparent association between facial patterns and climate, with wasp from cooler locations tending to have higher facial pattern brokenness than wasps from warmer locations. Additional experimental work testing the causes and consequences of facial pattern variation will be important, as geographic variation in signals has important consequences for the evolution of communication systems and social behavior.

Published
2011