Behavioural trade-offs between growth and mortality explain evolution of submaximal growth rates

1. The importance of body size and growth rate in ecological interactions is widely recognized, and both are frequently used as surrogates for fitness. However, if there are significant costs associated with rapid growth rates then its fitness benefits may be questioned.

2. In replicated whole-lake experiments, we show that a domestic strain of rainbow trout (artificially selected for maximum intrinsic growth rate) use productive but risky habitats more than wild trout. Consequently, domestic trout grow faster in all situations, experience greater survival in the absence of predators, but have lower survival in the presence of predators. Therefore, rapid growth rates are selected against due to increased foraging effort (or conversely, lower antipredator behaviour) that increases vulnerability to predators. In other words, there is a behaviourally mediated trade-off between growth and mortality rates.

3. Whereas rapid growth is beneficial in many ecological interactions, our results show the mortality costs of achieving it are large in the presence of predators, which can help explain the absence of an average phenotype with maximized growth rates in nature.

Biotechnology in U.S. agriculture: Trade consequences for dairy products

The emergence of synthetic bovine Somatotropin (bST) is one of the most widely discussed advances in biotechnology. Its potential impacts on milk production around the world could be significant. However, the exact economic impacts of bST in any one region depends on a number of factors, some of which are still highly controversial.

This article sets out to estimate the economic impacts of the adoption of bST in the United States, the single largest milk producer in the Western world. A quarterly econometric model of the U.S. dairy sector is used to forecast the total production, consumption, and excess supply of milk to 1995. The preliminary results indicate that under the assumption of a gradual rate of adoption and a 15 percent milk production response, the United States could be exporting as much milk as New Zealand by 1995. Should the production response rate or the adoption rate be higher, the United States could indeed become a major competitor in the world dairy market by 1995.

Although such a development could adversely impact on other dairy exporters, such as New Zealand, the precise economic impacts on world prices and trade would depend crucially on the position that other major dairy producers, especially the EC, adopt with respect to the use of bST.

John Mystery and the Australian book trade

The John Mystery books are a collection of Australian children's books and ephemera produced by a little known publishing dynamo, Lester Sinclair, in the middle of the twentieth century. I identify factors which operated to position these items as forgotten elements of Australian literary history. After contextualizing the John Mystery brand of children's books, I suggest how children's literature scholars may find potential resources in the Children's Literature Collection and other heritage collections of the State Library of Victoria.

EU-India free trade negotiations threatening access to medicines

Indian firms are major global producers of relatively affordable generic medicines. Access to such drugs makes the difference between life and death for billions of people in the Global South. The Economist noted recently that ‘America should not use trade deals to swaddle drugmakers in excessive patent protections’. Nor should the European Union (EU) impose obstacles to the supply of generic drugs by Indian firms beyond those already mandated by the Trade Related Aspects of Intellectual Property Rights (TRIPS) Agreement. Free trade negotiations between the EU (reported to be close to completion) constitute a clear threat to the role of India as the ‘pharmacy of the developing world’.

Strategies for agent-based negotiation in e-trade

£-negotiation handles negotiation over the Internet without human supervision and has shown effectiveness in concluding verifiable and more favorable agreements in a reasonably short time. In this chapter, the authors discuss the negotiation 5ystem and its components with particular emphasis on negotiation strategies. A negotiation strategy defines strategic tactics, which advise on the proper action to select from a set of possible actions that optimizes negotiation outcomes. A strategy should integrate negotiation goals and reactive attitudes. Usually, a fixed strategy is implemented during the course of negotiation regardless ofsignificant decision-makingfactors including market status, opponent :S profile, or eagerness for a negotiated goods/service. The chapter presents the main negotiation strategies and outlines the different decision-makingfactors that should be considered. A strategy uses a utility function to evaluate the offer of an opponent and advises on the generation of a counter offer or the best interaction. The authors finally discuss different utility functions presented in the literature.

White cargo : Australian residents, trade and colonialism in Shanghai between the wars

This article follows Australians who went to treaty ports in China in the 1920s and 1930s to find work. By 1932 there were so many Australians in Shanghai that the British government asked Prime Minister Joseph Lyons to issue an official warning dissuading Australians from travelling there for employment. One result of this migration was the generation of files on Australians in the Special Branch’ surveillance files of the Shanghai Municipal Police (SMP) archives. Using these files, as well as Chinese language newspapers circulating in Shanghai at the time, this article examines links between Australians in Depression-era Shanghai and the development of Chinese anti-colonialism. It also suggests that reports on Australian behaviour in treaty port China in Australian newspapers recast the ways in which some Australians understood inter-colonial exchanges. Much is known about Australian attitudes to Asia in the first half of the twentieth century. Little, however, has been written about how Asian populations viewed Australians. The Shanghai Municipal Police files provide one register through which these viewpoints can be excavated.

The evolution of freedom of association in Australia's federal industrial relations law: from trade union security to workplace rights

The early provisions protecting freedom of association in Australian federal industrial relations law supported trade union security. The interests of individuals were seen as adequately protected by collective groups. This principle dominated the industrial relations laws from 1904 to the mid-1970s. However, from the late 1970s, the laws were incrementally altered to promote freedom of choice and the rights of individuals not to be part of trade unions. The reframing of the laws also reflected changes in the wider Australian community, manifested particularly in the decline of union density rates. These changes were also part of an international trend, favouring the ideology of neoliberalism which contributed to an unsympathetic environment for trade unions. The current Fair Work Act 2009 (Cth) has signalled a return to collectivism, although freedom of choice is at the heart of the laws rather than the promotion of collective groups. In the absence of legislative support promoting the viability of collective groups, this freedom to choose is threatened, leaving many workers with little choice but to disassociate.