284 Works

Data from: Accounting for the effects of biological variability and temporal autocorrelation in assessing the preservation of species abundance

Adam Tomašových & Susan M. Kidwell
Quantifying the effects of taphonomic processes on species abundances in time-averaged death assemblages (DAs) is pivotal for paleoecological inference. However, fidelity estimates based on conventional “live-dead” comparisons are fundamentally ambiguous: (1) data on living assemblages (LAs) are based on a very short period of sampling and thus do not account for natural variability in the LA, (2) LAs are sampled at the same time as the DA and thus do not necessarily reflect past LAs...

Data from: Genomic-scale capture and sequencing of endogenous DNA from feces

George Perry, John Marioni, Pall Melsted & Yoav Gilad
Genomic-level analyses of DNA from non-invasive sources would facilitate powerful conservation and evolutionary studies in natural populations of endangered and otherwise elusive species. However, the typical low quantity and poor quality of DNA that is extracted from non-invasive samples have generally precluded such work. Here we apply a modified DNA capture protocol that, when used in combination with massively-parallel sequencing technology, facilitates efficient and highly-accurate resequencing of megabases of specified nuclear genomic regions from fecal...

Data from: Genetic structure in a dynamic baboon hybrid zone corroborates behavioral observations in a hybrid population

Marie J.E. Charpentier, Michael C. Fontaine, Julien P. Renoult, Thomas Jenkins, Erwan Cherel, Laure Benoit, Nicolas Barthès, Susan C. Alberts & Jenny Tung
Behavior and genetic structure are intimately related: mating patterns and patterns of movement between groups or populations influence the movement of genetic variation across the landscape and from one generation to the next. In hybrid zones, the behavior of the hybridizing taxa can also have an important impact on the incidence and outcome of hybridization events. Hybridization between yellow baboons and anubis baboons has been well-documented in the Amboseli basin of Kenya, where more anubis-like...

Data from: Comparing the differential filling of morphospace and allometric space through time: the morphological and developmental dynamics of early Jurassic ammonoids

Sylvain Gerber
The evolutionary history of shell geometry of Early Jurassic ammonoids during the Pliensbachian–Toarcian second-order mass extinction is explored at both adult and ontogenetic levels. The ontogenetic approach builds on the concept of allometric space to get insights into the developmental aspects of morphological evolution. Investigation of the deployment of taxa in adult morphospace and allometric space allows the appraisal of the temporal evolution of morphological and allometric disparities. Curves of taxonomic diversity, adult morphological disparity,...

Data from: Wing patterning gene redefines the mimetic history of Heliconius butterflies

Heather M. Hines, Brian A. Counterman, Riccardo Papa, Priscila Albuquerque De Moura, Marcio Z. Cardoso, Mauricio Linares, James Mallet, Robert D. Reed, Chris D. Jiggins, Marcus R. Kronforst, W. Owen McMillan, R. D. Reed, J. Mallet, W. O. McMillan, M. R. Kronforst, H. M. Hines, B. A. Counterman, M. Linares, M. Z. Cardoso & C. D. Jiggins
The mimetic butterflies Heliconius erato and H. melpomene have undergone parallel radiations to form a near-identical patchwork of over 20 different wing pattern races across the Neotropics. Previous molecular phylogenetic work on these radiations has suggested that similar but geographically disjunct color patterns arose multiple times independently in each species. The neutral markers used in these studies, however, can move freely across color pattern boundaries and therefore might not represent the history of the adaptive...

Data from: Predicting the effects of increasing temporal scale on species composition, diversity, and rank-abundance distributions

Adam Tomašových & Susan M. Kidwell
Paleoecological analyses that test for spatial or temporal variation in diversity must consider not only sampling and preservation bias, but also the effects of temporal scale (i.e., time averaging). The species-time relationship (STR) describes how species diversity increases with the elapsed time of observation, but its consequences for assessing the effects of time averaging on diversity of fossil assemblages remain poorly explored. Here, we use a neutral, dispersal-limited model of metacommunity dynamics, with parameters estimated...

Data from: Pathogen persistence in the environment and insect-baculovirus interactions: disease-density thresholds, epidemic burnout, and insect outbreaks

Emma Fuller, Bret D. Elderd & Greg Dwyer
Classical epidemic theory focuses on directly transmitted pathogens, but many pathogens are instead transmitted when hosts encounter infectious particles. Theory has shown that for such diseases pathogen persistence time in the environment can strongly affect disease dynamics, but estimates of persistence time, and consequently tests of the theory, are extremely rare. We consider the consequences of persistence time for the dynamics of the gypsy moth baculovirus, a pathogen transmitted when larvae consume foliage contaminated with...

Data from: Best practices for justifying fossil calibrations

James F. Parham, Philip C. J. Donoghue, Christopher J. Bell, Tyler D. Calway, Jason J. Head, Patricia A. Holroyd, Jun G. Inoue, Randall B. Irmis, Walter G. Joyce, Daniel T. Ksepka, José S. L. Patané, Nathan D. Smith, James E. Tarver, Marcel Van Tuinen, Ziheng Yang, Kenneth D. Angielczyk, Jenny M. Greenwood, Christy A. Hipsley, Jacobs Louis, Peter J. Makovicky, Johannes Müller, Krister T. Smith, Jessica M. Theodor, Rachel C. M. Warnock, Michael J. Benton … & Louis Jacobs
Our ability to correlate biological evolution with climate change, geological evolution, and other historical patterns is essential to understanding the processes that shape biodiversity. Combining data from the fossil record with molecular phylogenetics represents an exciting synthetic approach to this challenge. The first molecular divergence dating analysis (Zuckerkandl and Pauling 1962) was based on a measure of the amino acid differences in the hemoglobin molecule; with replacement rates established (calibrated) using inaccurate paleontological age estimates...

Data from: How species longevity, intraspecific morphological variation, and geographic range size are related: a comparison using late Cambrian trilobites

Melanie J Hopkins
Phenotypic variation is fundamental to evolutionary change. Variation not only evinces the connectivity of populations but it is also associated with the adaptability and evolvability of taxa. Despite the potential importance of morphological variation in structuring evolutionary patterns, little is known about how relative differences in intraspecific morphological variation and its geographic structure are linked to differences in species longevity. This study offers a novel combination of analyses that reveal the quantitative relationships among intraspecific...

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