Abstract
We subjected these weapons to 12 generations of bidirectional selection and found trade-offs between weapons and two other male characters: wing and testis size. In addition, probably as a consequence of the observed changes in investment, dispersal ability and ejaculatory volume differ significantl...
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PMID: 20129986
PDF is available here.
Abstract
We show that in mathematical models such trade-offs can lead to the simultaneous existence of two evolutionary stable states (evolutionary bi-stability) of allocation of resources to the two modes of transmission. We also show that jumping between evolutionary stable states can be induced by gradual...
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PMID: 20129975
PDF is available here.
Abstract
We present a model of the life cycle of a typical colony-dwelling aphid. The model incorporates ecological factors and includes a trade-off between investing in social behaviour and investing in reproduction. Our focus on inclusive fitness contrasts with previous approaches that optimize colony outp...
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PMID: 20129979
PDF is available here.
Abstract
I reconstruct the trajectory of morphological diversification in this major radiation from its first appearance in the Late Cretaceous to the Miocene using a geometric morphometric database comprising more than 600 extinct species known from complete body fossils. The anatomical diversity (disparity...
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PMID: 20133356
PDF is available here.
Abstract
We present experimental evidence for the relative importance of two putative agents of selection in shaping the adaptive landscape for a classic island radiation. We manipulated whole-island populations of the brown anole lizard, Anolis sagrei, to measure the relative importance of predation versus...
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PMID: 20453837
PDF is available here.
Abstract
Most evolutionary theory does not deal with populations expanding or contracting in space. Invasive species, climate change, epidemics, and the breakdown of dispersal barriers, however, all create populations in this kind of spatial disequilibrium. Importantly, spatial disequilibrium can have import...
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PMID: 20583704
PDF is available here.
Abstract
I show that wings of several boreal forest songbirds and temperate songbirds of non-forest habitats have become more pointed over the last 100 years. In contrast, wings of most temperate forest and early-successional boreal forests species have become less pointed over the same period. In contrast t...
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PMID: 20583699
PDF is available here.
Abstract
I compared the ecological and geographic distributions of source populations and island populations for each of the colonization groups based on a variety of literature and field data. Ages of colonization events and spread within the islands were determined by sequence divergence in mitochondrial g...
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PMID: 20583721
PDF is available here.
Abstract
We value. This justification fails, however, since it is premised on assumptions about the causal structure of the world that do not accord with contemporary evolutionary theory. This does not exclude the possibility that the precautionary principle may be warranted for other reasons or in certain s...
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PMID: 20653252
PDF is available here.
Abstract
I argue that three currents of thought-relating to evolution, atomism and telepathy-have magnified the perceived importance of mirror neurons. When they are understood to be a product of associative learning, rather than an adaptation for social cognition, mirror neurons are no longer mesmerising, b...
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PMID: 20167276
PDF is available here.
Abstract
We investigated morphological variation patterns among four populations from the Pacific Ocean and six monogenean species through traditional and geometric morphometric techniques. Unlike the traditional method, the geometric morphometric method yielded a high percentage of individuals correctly cla...
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PMID: 20129065
PDF is available here.
Abstract
We report a novel finding of an antisense oligonucleotide (ASO) microwalk in which we examined the position-specific role of intronic residues downstream from the 5' splice site (5' ss) of SMN2 exon 7, skipping of which is associated with spinal muscular atrophy (SMA), a leading genetic cause of inf...
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PMID: 20413618
PDF is available here.
Abstract
I examined the cross-cultural consistency of sex differences for four traits: extraversion, agreeableness, neuroticism, and male-versus-female-typical occupational preferences. Across nations, men and women differed significantly on all four traits (mean ds = -.15, -.56, -.41, and 1.40, respectively...
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PMID: 18712468
PDF is available here.
Abstract
I examine two aspects of adaptive radiation: first, that it results from ecological opportunity and, second, that it is deterministic in terms of its outcome and evolutionary trajectory. Ecological opportunity is usually a prerequisite for adaptive radiation, although in some cases, radiation can oc...
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PMID: 20412015
PDF is available here.
Abstract
We suggest that a broad class of limiting-factors problems involving essential resources or essential components of reproductive effort can be analyzed with an evolutionary application of Liebig's law of the minimum. We explore life-history evolution using the metaphor of an organism that must harve...
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PMID: 20397907
PDF is available here.
Abstract
We address this issue by using two quantitative genetic simulation models in a model system for studying trade-offs, wing-dimorphic insects. Wing dimorphic insects typically exhibit a trade-off in the allocation of resources between migratory ability and reproduction. In our models, we focus on allo...
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PMID: 20397908
PDF is available here.
Abstract
I present a patch-structured model to explore the conditions that favor dimorphism when dispersal is coupled with sex allocation. The model shows that if the proportion of fruits dispersed from a cosexual plant increases with its allocation to fruits (causing accelerating fitness returns from disper...
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PMID: 20394525
PDF is available here.
Abstract
We use body mass data from 3,473 of 4,510 extant mammalian species and an almost complete species-level phylogeny to determine the best model of log(body mass) evolution across all mammals, split taxonomically and spatially. An early-burst model fits better across all mammals than do models based on...
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PMID: 20394498
PDF is available here.
Abstract
The very early forms of life probably comprised ribozyme-like agents that were able to catalyze reactions and serve as templates for their own replication. The early evolution has also been suggested to occur mainly horizontally between proto-cells or inorganic compartments rather than vertically fr...
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PMID: 20012776
PDF is available here.
Abstract
An individual-based model (IbM) for bacterial adaptation and evolution, COSMIC-Rules, has been employed to simulate interactions of virtual temperate bacteriophages (phages) and their bacterial hosts. Outcomes of infection mimic those of a phage such as lambda, which can enter either the lytic or ly...
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PMID: 20211223
PDF is available here.
Abstract
Most of evolutionary algorithms (EAs) are based on a fixed population. However, due to this feature, such algorithms do not fully explore the potential of searching ability and are time consuming. This paper presents a novel nature-inspired heuristic optimization algorithm: bacterial foraging algori...
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PMID: 20347927
PDF is available here.