TITLE

A two-resource model of terminal investment

AUTHOR(S)
Javoiš, Juhan
PUB. DATE
June 2013
SOURCE
Theory in Biosciences;Jun2013, Vol. 132 Issue 2, p123
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The most widely known theoretical basis for the hypothesis of terminal investment is the classic model by George C. Williams (1966). Although this model predicts that reproductive effort (i.e. the proportion of available resources devoted to reproduction) increases with decreasing reproductive value, it implies that reproductive allocation in absolute terms should remain stable. This contrasts with the empirical evidence on terminal investment reported to date: the vast majority of positive case studies report an increase in some aspect of reproductive allocation in absolute terms. Also, a substantial number of studies have failed to record terminal investment, despite expectations. Here, I present a simple conceptual model which explains such results. I argue that to explain terminal investment, an organism's reproductive capacity must not be considered as a common pool of resources (often described by the term 'reproductive value'), but as a set of different resources which are not easily convertible to each other, and should be exhausted in balance. Thus, if one resource accidentally decreases, in response, the others must be expended at higher rate. To test this model, each reproductive allocation should be measured in a more specific currency (or currencies) than traditional 'reproductive effort'. The model is consistent with both the positive and the negative case reports on terminal investment.
ACCESSION #
87609191

 

Related Articles

  • Evolutionary medicine at twenty: rethinking adaptationism and disease. Valles, Sean // Biology & Philosophy;Mar2012, Vol. 27 Issue 2, p241 

    Two decades ago, the eminent evolutionary biologist George C. Williams and his physician coauthor, Randolph Nesse, formulated the evolutionary medicine research program. Williams and Nesse explicitly made adaptationism a core component of the new program, which has served to undermine the...

  • Commercialization of new technologies: The case of Iran. Abbasi, Farhad; Attar, Hooman; Hajihoseini, Hojat // International Journal of Technology Management & Sustainable Dev;2012, Vol. 11 Issue 2, p191 

    Over the last three decades there has been a growing interest in Research-and-Development (R&D)-based businesses in Iran. To date, no effort has been made to develop a comprehensive guideline based on a conceptual model to underpin the development of R&D-based businesses in Iran. This article is...

  • FUNDRAISING IN THE CONTEXT OF NONPROFIT STRATEGIC MARKETING: TOWARD A CONCEPTUAL MODEL. Čačija, Ljiljana Najev // Management: Journal of Contemporary Management Issues;Jun2013, Vol. 18 Issue 1, p59 

    The aim of this paper is to present the conceptual basis for examining the effects of activities, performed within the 'traditional' nonprofit strategic marketing, on the fundraising success. A review of the existing theoretical and empirical studies in the field of fundraising is provided. Open...

  • BOUNDED RATIONALITY AND THE SUPPLY SIDE OF ENTREPRENEURSHIP: A PREDICTIVE MODEL OF THE ENTREPRENEURIAL EVENT. Rideout, Elaine C. // Frontiers of Entrepreneurship Research;2012, p585 

    If innovative entrepreneurship creates economic growth/jobs, then the "supply side" of entrepreneurship is important This study reviewed the literature for the antecedents of entrepreneurial action, and attempted to sort out the antecedent mechanisms (including entrepreneur- ship education) and...

  • REDUKTYVIZMO RAIÅ KA Å IUOLAIKINÄ–JE PRIEŽASTSTINGUMO FILOSOFIJOJE. Grenda, Vytautas // Problemos / Problems;2012 Supplement, Vol. 81 Issue Supp, p7 

    This paper provides an overview of how the term "reduction" is used in contemporary philosophy of causation. It is considered how, according to this usage, theories of causation may be classified as reductive or as non-reductive, and what types of reductive theories may be distinguished. On the...

  • Parapsychological Phenomena as Examples of Generalized Nonlocal Correlations--A Theoretical Framework. WALACH, HARALD; VON LUCADOU, WALTER; RÖMER, HARTMANN // Journal of Scientific Exploration;Winter2014, Vol. 28 Issue 4, p605 

    Scientific facts are constituted as consensus about observable phenomena against the background of an accepted, or at least plausible, theory. Empirical data without a theoretical framework are at best curiosities and anomalies, at worst they are neglected. The problem of parapsychological...

  • Effect of Process-orientated Organizational Culture on Knowledge Management Success: A Conceptual Model. Zhang Changzheng; Wang Shuo // Journal of Convergence Information Technology;Mar2013, Vol. 8 Issue 6, p965 

    The relationship between process-orientation dimension of organizational culture and knowledge management success has not been demonstrated, though knowledge management itself is processorientated in nature. By adopting the methods of logical reasoning and literature review, the paper proposes a...

  • Analyzing the Impact of IT Innovation on the Development of Dynamic Capabilities. Zhang Zhensen; Qi Guijie // Journal of Convergence Information Technology;May2013, Vol. 8 Issue 9, p938 

    By focusing on today's rapidly changing business environment, this paper analyzes conceptually how enterprises can develop their dynamic capabilities from the application of information technology (IT) innovation. Our analysis indicates that the impacts of IT innovation on the four dimensions of...

  • A Baptism of Ice and Fire. Grey, Kath // Australasian Science;Apr2005, Vol. 26 Issue 3, p26 

    Examines the possible effect of massive ice ages and a meteor impact on the evolution of life on Earth. Background on the Snowball Earth hypothesis; Information on existence of life using the ancient fossil record of Australia; Conflict on the results of the fossil record and the hypothesis...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics