Isolation barriers and genetic divergence in non ‐territorial Argia damselflies
Biological Journal of the Linnean Society, EarlyView. (Source: Biological Journal of the Linnean Society)
Source: Biological Journal of the Linnean Society - November 5, 2016 Category: Research Authors: Angela Nava ‐Bolaños, Rosa A. Sánchez‐Guillén, Roberto Munguía‐Steyer, Alex Córdoba‐Aguilar Source Type: research

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Biological Journal of the Linnean Society, Ahead of Print. (Source: Biological Journal of the Linnean Society)
Source: Biological Journal of the Linnean Society - November 5, 2016 Category: Research Source Type: research

Food partitioning and the evolution of non ‐randomly structured communities in tailed amphibians: a worldwide systematic review
Biological Journal of the Linnean Society, EarlyView. (Source: Biological Journal of the Linnean Society)
Source: Biological Journal of the Linnean Society - November 4, 2016 Category: Research Authors: Leonardo Vignoli, Alessandra Maria Bissattini, Luca Luiselli Source Type: research

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Biological Journal of the Linnean Society, Ahead of Print. (Source: Biological Journal of the Linnean Society)
Source: Biological Journal of the Linnean Society - November 4, 2016 Category: Research Source Type: research

Convergent evolution in the colour polymorphism of Selkirkiella spiders (Theridiidae) from the South American temperate rainforest
Convergent evolution tends to lead to similar phenotypic responses to the same selective pressures. However, when the phenotypic response is polymorphic, it is less clear how evolutionary convergence can lead to parallel diversity across species and populations. The present study focuses on South American spiders in the genus Selkirkiella (Theridiidae), which are shown to be polymorphic for colour. We (1) examine the number of morphs and their correspondence across taxa and (2) place the phenomenon in a phylogenetic context to determine whether the colour polymorphism in Selkirkiella albogutatta from the Juan Fernández ar...
Source: Biological Journal of the Linnean Society - October 31, 2016 Category: Research Authors: Darko D. Cotoras, Michael S. Brewer, Peter J. P. Croucher, Geoff S. Oxford, David R. Lindberg, Rosemary G. Gillespie Tags: Research Article Source Type: research

Challenge to the model of lake charr evolution: shallow ‐ and deep‐water morphs exist within a small postglacial lake
We report here Rush Lake (1.3 km2) as the first example of a small lake with two lake charr morphs (lean and huronicus). Morphology, diet, life history, and genetics were examined to demonstrate the existence of morphs and determine the potential influence of evolutionary processes that led to their formation or maintenance. Results showed that the huronicus morph, caught in deep‐water, had a deeper body, smaller head and jaws, higher eye position, greater buoyancy, and deeper peduncle than the shallow‐water lean morph. Huronicus grew slower to a smaller adult size, and had an older mean age than the lean morph. Genet...
Source: Biological Journal of the Linnean Society - October 31, 2016 Category: Research Authors: Louise Chavarie, Andrew M. Muir, Mara S. Zimmerman, Shauna M. Baillie, Michael J. Hansen, Nancy A. Nate, Daniel L. Yule, Trevor Middel, Paul Bentzen, Charles C. Krueger Tags: Research Article Source Type: research

Large ‐scale phylogenetic structure of European springtails (Collembola) depends on species range size and postglacial colonization history
The postglacial European colonization history has come into the focus of biogeographical interest and the study of phylogenetic relatedness within and between regional faunas and floras has proven to be an effective tool for the reconstruction of postglacial colonization trajectories. In the present study, we used a faunal compilation of 2078 European springtail species and data on taxonomic relatedness to investigate whether phylogenetic diversity increases along the gradients from southern glacial refugia towards northern Europe and also whether glacial refugia are phylogenetically segregated, as predicted by models of g...
Source: Biological Journal of the Linnean Society - October 31, 2016 Category: Research Authors: Cristina Fiera, Jan Christian Habel, Mieczys ław Kunz, Werner Ulrich Tags: Research Article Source Type: research

Temporal frames of 45S rDNA site ‐number variation in diploid plant lineages: lessons from the rock rose genus Cistus (Cistaceae)
The perception that the turnover of 45S rDNA site number in plants is highly dynamic pervades the literature on rDNA evolution. However, most reported evidences come from the study of polyploid systems and from crop species subjected to intense agronomic selection. In sharp contrast with polyploids, the evolutionary patterns of rDNA loci number in predominantly diploid lineages have received less attention. Most studies on rDNA loci changes lack explicit temporal frames, and hence their dynamics could not be assessed. Here, we assess the temporal patterns of rDNA site evolution in Cistus, an entirely diploid lineage. We as...
Source: Biological Journal of the Linnean Society - October 31, 2016 Category: Research Authors: Chiara Totta, Marcela Rosato, Pablo Ferrer ‐Gallego, Fernando Lucchese, Josep A. Rosselló Tags: Research Article Source Type: research

Giant cannibals drive selection for inducible defence in heterospecific prey
Predation can strongly influence the evolution of prey species by selecting for defensive phenotypes that reduce the risk of predation. Although cannibalism is frequent in predators and is known to strongly influence predator–prey dynamics, it is largely neglected when studying the evolution of phenotypic defences in prey. Changes in cannibalism can alter the abundance, size‐structure, and even phenotypes within predator populations, and thereby change the numerical and per‐capita effects driving the selection pressure on defensive phenotypes in prey. In the present study, we experimentally manipulated the presence a...
Source: Biological Journal of the Linnean Society - October 31, 2016 Category: Research Authors: Kunio Takatsu, Volker H. W. Rudolf, Osamu Kishida Tags: Research Article Source Type: research

Isolation barriers and genetic divergence in non ‐territorial Argia damselflies
In this study we investigated the strength of three premating barriers (visual, mechanical and tactile), genetic divergence and degree of sympatry (on their entire distribution) between four non‐territorial Argia damselflies (A. anceps, A. extranea, A. oenea and A. tezpi). Our results are explained in the light of learned mating preferences and Kaneshiro's hypothesis. We detected a strong reproductive isolation between all pairs of species by the joint action of the three studied barriers [visual (90.6%), mechanical (8.7%) and tactile (0.7%)]. Sexual (visual) isolation was the most important barrier, perhaps driven by le...
Source: Biological Journal of the Linnean Society - October 31, 2016 Category: Research Authors: Angela Nava ‐Bolaños, Rosa A. Sánchez‐Guillén, Roberto Munguía‐Steyer, Alex Córdoba‐Aguilar Tags: Research Article Source Type: research

Food partitioning and the evolution of non ‐randomly structured communities in tailed amphibians: a worldwide systematic review
The evolutionary response to interspecific competition is the partitioning of the resources used by the competing species. At the community level, the ultimate outcome of resource partitioning determines how communities evolve in terms of their species composition, explaining the distribution and abundance of organisms within natural assemblages. Despite amphibians having attracted considerable attention from population biologists, niche partitioning patterns have never been explored with a systematic approach in tailed amphibians (order Urodela). To fill this gap we tested whether Urodela communities are assembled in a no...
Source: Biological Journal of the Linnean Society - October 31, 2016 Category: Research Authors: Leonardo Vignoli, Alessandra Maria Bissattini, Luca Luiselli Tags: Review Article Source Type: research