Environmental, social, morphological, and behavioral constraints on opportunistic multiple paternity

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Genetic basis of between-individual and within-individual variance of docility

Funded by Alces Software UCLA Academic Senate Division of Life Sciences National Geographic Society National Science Foundation. Grant Numbers: IDBR-0754247, DEB-1119660, DBI-0242960, DBI-0731346 University of Aberdeen Data deposited at Dryad: doi:10.5061/dryad.11vf0.Peer reviewedPostprin

Transient LTRE analysis reveals the demographic and trait-mediated processes that buffer population growth.

Temporal variation in environmental conditions affects population growth directly via its impact on vital rates, and indirectly through induced variation in demographic structure and phenotypic trait distributions. We currently know very little about how these processes jointly mediate population responses to their environment. To address this gap, we develop a general transient life table response experiment (LTRE) which partitions the contributions to population growth arising from variation in (1) survival and reproduction, (2) demographic structure, (3) trait values and (4) climatic drivers. We apply the LTRE to a population of yellow-bellied marmots (Marmota flaviventer) to demonstrate the impact of demographic and trait-mediated processes. Our analysis provides a new perspective on demographic buffering, which may be a more subtle phenomena than is currently assumed. The new LTRE framework presents opportunities to improve our understanding of how trait variation influences population dynamics and adaptation in stochastic environments

Spearfishing-induced behavioral changes of an unharvested species inside and outside a marine protected area.

By prohibiting fishing, marine protected areas (MPAs) provide a refuge for harvested species. Humans are often perceived as predators by prey and therefore respond fearfully to humans. Thus, fish responses to humans inside and outside of an MPA can provide insights into their perception of humans as a predatory threat. Previous studies have found differences in the distance that harvested species of fish initiate flight (flight initiation distance-FID) from humans inside and outside an MPA, but less is known about unharvested species. We focused on whether the lined bristletooth Ctenochaetus striatus, an unharvested surgeonfish, can discriminate between a snorkeler and a snorkeler with a spear gun inside and outside of a no-take MPA in Mo'orea, French Polynesia. Additionally, we incorporated starting distance (the distance between the person and prey at the start of an experimental approach), a variable that has been found to be important in assessing prey escape decisions in terrestrial species, but that has not been extensively studied in aquatic systems. Lined bristletooth FID was significantly greater in the presence of a spear gun and varied depending on if the spear gun encounter was inside or outside of the MPA. These results imply a degree of sophistication of fish antipredator behavior, generate questions as to how a nontargeted species of fish could acquire fear of humans, and demonstrate that behavioral surveys can provide insights about antipredator behavior

Environmentally induced phenotypic variation in wild yellow-bellied marmots

We thank all the marmoteers who helped in data collection and 2 anonymous reviewers who helped us to clarify our message. AM-C was supported by a Fulbright Fellowship, and JGAM was supported by Fond Québécois de Recherche sur la Nature et les Technologies. KBA was supported by the National Science Foundation between 1962 and 2000. DTB was supported by the National Geographic Society, UCLA (Faculty Senate and the Division of Life Sciences), a Rocky Mountain Biological Laboratory research fellowship, and by the National Science Foundation (IDBR-0754247 and DEB-1119660 to DTB as well as DBI 0242960 and 0731346 to the Rocky Mountain Biological Laboratory).Peer reviewedPostprin

Redefining Government\u27s Role in Health Care: Is a Dose of Competition What the Doctor Should Order?

Throughout the 1970s, the two major political parties espoused some form of national health insurance. Faced with a fiscal squeeze, however, the Carter Administration gave national health insurance a relatively low priority.The political movement for comprehensive national health insurance rests on an ideological commitment that the federal government should underwrite the cost of providing universal access to medical services. The objective is essentially redistributive in nature: equitable concerns for the disadvantaged loom as the major focus. The selective expansion of coverage to encompass those identified as needy and worthy, but only those so identified, is anathema to those who traditionally support broad national health insurance. These proponents would contend that a universal and comprehensive program is necessary to avoid a dual system of medical care delivery--one for the poor and another for then on poor. Advocates of a universal program would, in effect, compel the nonpoor to fund and participate in a governmentally sponsored program designed to benefit the poor so that the medical care system operated under government auspices would not be confined to lower income persons and, implicitly, stigmatized as welfare medicine of lower quality and lower status.The access gap between rich and poor-a disparity that underlay much of the political initiative for national health insurance-has been narrowed in recent years at least partly because of Medicaid and Medicare. Overall expenditures on medical services have escalated dramatically during the past two decades and occupy an increasingly large component of our national income. Few people would now maintain that aggregate medical care spending is substantially too low. To the contrary, skeptics point out that structural institutional relationships in the medical sector encourage ever-expanding medical expenditures. Coupled with a growing awareness of the importance of nonmedical factors in the promotion of health, this fact has led to general questioning whether individuals and society collectively are getting their money\u27s worth from surging medical services expenditures. Pragmatically, factors such as lifestyle have assumed a more visible role in affecting health status. Politically, the sense that illness is fortuitous has been challenged, which in turn has suggested a more tight-fisted response to claims for more munificent redistributive programs. Moreover, other pressing claims on public budgets and cries for tax relief have recently emerged. These nonhealth demands make less money available for public programs with strong redistributional orientations... This Article examines the market-oriented approach, describing what it is and what its rationale is. It then focuses on the problem of equity within the market system. In addition, the Article analyzes and evaluates prior regulatory experiences and examines the emerging directions of health policy. Finally, the Article considers selective developments from the perspective of the competitive alternative

Development of boldness and docility in yellow-bellied marmots

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