632 Works

Data from: Genome-scale phylogenetics: inferring the plant tree of life from 18,896 gene trees

J. Gordon Burleigh, Mukul S. Bansal, Oliver Eulenstein, Stefanie Hartmann, André Wehe & Todd J. Vision
Phylogenetic analyses using genome-scale data sets must confront incongruence among gene trees, which in plants is exacerbated by frequent gene duplications and losses. Gene tree parsimony is a phylogenetic optimization criterion in which a species tree is selected that minimizes the number of gene duplications induced among a set of gene trees. The run time performance of previous implementations has limited its use on large-scale data sets. We used new software that incorporates recent algorithmic...

Data from: Edge effects on growth and biomass partitioning of an Amazonian understory herb (Heliconia acuminata; Heliconiaceae)

Emilio M. Bruna, Ana Segalin De Andrade & Ana Segalin De Andrade
PREMISE: After deforestation, environmental changes in the remaining forest fragments are often most intense near the forest edge, but few studies have evaluated plant growth or plasticity of plant growth in response to edge effects. METHODS: In a 2-year common garden experiment, we compared biomass allocation and growth of Heliconia acuminata with identical genotypes grown in 50 × 35 m common gardens on a 25-year-old edge and in a forest interior site. KEY RESULTS: Genetically...

Data from: Asymmetric dispersal and colonization success of Amazonian plant-ants queens

Emilio M. Bruna, Thiago J. Izzo, Brian D. Inouye, Maria Uriarte & Heraldo L. Vasconcelos
Background: The dispersal ability of queens is central to understanding ant life-history evolution, and plays a fundamental role in ant population and community dynamics, the maintenance of genetic diversity, and the spread of invasive ants. In tropical ecosystems, species from over 40 genera of ants establish colonies in the stems, hollow thorns, or leaf pouches of specialized plants. However, little is known about the relative dispersal ability of queens competing for access to the same...

Data from: Extensive sex-specific nonadditivity of gene expression in Drosophila melanogaster

Greg Gibson, Rebecca Riley-Berger, Larry Harshman, Artyom Kopp, Scott Vacha, Sergey Nuzhdin & Marta Wayne
Assessment of the degree to which gene expression is additive and heritable has important implications for understanding the maintenance of variation, adaptation, phenotypic divergence, and the mapping of genotype onto phenotype. We used whole-genome transcript profiling using Agilent long-oligonucleotide microarrays representing 12,017 genes to demonstrate that gene transcription is pervasively nonadditive in Drosophila melanogaster. Comparison of adults of two isogenic lines and their reciprocal F1 hybrids revealed 5820 genes as significantly different between at least...

Data from: Phylogenetic assessment of molecular and morphological data for eutherian mammals

Fu-Guo R. Liu & Michael M. Miyamoto
The interordinal relationships of eutherian (placental) mammals were evaluated by a phylogenetic analysis of four published data sets (three sequence and one morphological). The nature and degree of support and conflict for particular groups were assessed by separate bootstrap and homogeneity tests that were followed by combined analyses of the sequence and morphological data. Between orders, strong support (i.e., >95% bootstrap scores) was found for a paraphyletic Artiodactyla (relative to Cetacea) and a monophyletic Cetartiodactyla...

Data from: New species of Arthroleptis (Anura: Arthroleptidae) from Ngozi Crater in the Poroto Mountains of southwestern Tanzania

David C. Blackburn
A new species of squeaker frog (Arthroleptis) is described from Ngozi Crater in the Poroto Mountains of southwestern Tanzania. The holotype, and only specimen, was collected 80 years ago but remained undescribed because of past taxonomic confusion relating to large-bodied species of Arthroleptis from eastern Africa. Morphological study, including multivariate analysis of measurement data, indicates that this new species is distinguishable from other species of Arthroleptis, including large-bodied species such as Arthroleptis adolfifriederici, Arthroleptis affinis,...

Data from: Tropical nematode diversity: vertical stratification of nematode communities in a Costa Rican humid lowland rainforest

Thomas O. Powers, Deborah A. Neher, Peter Mullin, Alejandro Esquivel, Robin M. Giblin-Davis, Natsumi Kanzaki, Patricia P. Stock, Morielos M. Mora & Lorena Uribe-Lorio
Comparisons of nematode communities among ecosystems have indicated that, unlike many organisms, nematode communities have less diversity in the tropics than in temperate ecosystems. There are, however, few studies of tropical nematode diversity on which to base conclusions of global patterns of diversity. This study reports an attempt to estimate nematode diversity in the lowland tropical rainforest of La Selva Biological Research Station in Costa Rica. We suggest that one reason previous estimates of tropical...

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