Preprints (not yet peer-reviewed)

118 downloads
378 views

Synapsida, the clade including therapsids and thus also mammals, is one of the two major branches of amniotes. Organismal design, with modularity as a concept, offers insights into the evolution of therapsids, a group that experienced profound anatomical transformations...

["Developmental Biology","Evolutionary Studies","Neuroscience","Paleontology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.2313v1
52 downloads
243 views

Chimpanzees have the largest relative brain size, greatest reproductive output, and longest lifespan of any non-human ape; they also have the highest level of physical activity in the wild, as measured by daily walking and climbing distances. In this study, we...

["Anthropology","Ecology","Evolutionary Studies","Veterinary Medicine","Zoology"]
doi:10.7287/peerj.preprints.2307v1
28 downloads
305 views

Studies documenting Human-Induced Rapid Evolutionary Change (HIREC) routinely compare contemporary allele or morph frequency distributions with historical baselines. All too often, this involves the re-sampling of a population that was sampled at a single time...

["Environmental Sciences","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.2304v1
49 downloads
256 views

The family Dolichopodidae forms two of the four largest evolutionary radiations in the Hawaiian Islands across all flies: Campsicnemus (183 spp) and the Eurynogaster complex (66 spp). They also include a small radiation of Conchopus (6 spp). A handful of other...

["Entomology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.2299v1
41 downloads
180 views

Background. The adaptive maintenance of flower color variation is frequently attributed to pollinators in part because they preferentially visit certain flower phenotypes. We test whether Gentiana lutea – which shows a flower color variation (from orange to yellow)...

["Animal Behavior","Conservation Biology","Ecology","Evolutionary Studies","Plant Science"]
doi:10.7287/peerj.preprints.2280v1
30 downloads
196 views

Highly social animals possess a well-developed ability to distinguish the faces of familiar from novel conspecifics to induce distinct behaviors for maintaining society. However, the behaviors of animals when they encounter ambiguous faces of familiar yet novel...

["Animal Behavior","Evolutionary Studies"]
doi:10.7287/peerj.preprints.2262v1
51 downloads
178 views

Estimation of natural selection on protein-coding sequences is a key comparative genomics approach for de novo prediction of lineage specific adaptations. Selective pressure is measured on a per-gene basis by comparing the rate of non-synonymous substitutions to...

["Bioinformatics","Computational Biology","Evolutionary Studies","Mathematical Biology","Statistics"]
doi:10.7287/peerj.preprints.2218v1
120 downloads
314 views

In a recent paper, Beall, Hofer, and Schaller (2016) use observational time series data to test the hypothesis that the 2014 Ebola outbreak influenced the 2014 U.S. Federal Elections. They find substantial associations between online search volume for Ebola and...

["Anthropology","Evolutionary Studies","Psychiatry and Psychology","Statistics"]
doi:10.7287/peerj.preprints.2165v2
44 downloads
128 views

There are three sex ratio strategies (SRS) in nature—male-biased sex ratio, female-biased sex ratio and, equal sex ratio depending on the proportion of male offspring being greater than, less than, or equal to ½. The problem was already noted in Darwin’s (1859)...

["Animal Behavior","Ecology","Evolutionary Studies","Mathematical Biology"]
doi:10.7287/peerj.preprints.2166v1
54 downloads
237 views

Calcification is one of the most distinctive traits of scleractinian corals. Their hard skeletons form the substratum of reef ecosystems and confer on corals their remarkable diversity of shapes. Corallimorpharians are non-calcifying, close relatives of scleractinian...

["Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2151v1
62 downloads
148 views

The selective pressures challenging the human population leave genetic signatures. This study was designed to detect positive and balancing selection on the proprotein convertase subtilisin/kexin type 6 (PCSK6) gene by four different approaches (FDIST, BayeScan,...

["Anthropology","Bioinformatics","Evolutionary Studies","Genomics"]
doi:10.7287/peerj.preprints.2141v1
83 downloads
389 views

Paternity uncertainty seems to have shaped humans' differential investment in kin. I examined sex differences in communication among nuclear kin to expand inquiry on this matter and address some methodological limitations in prior work. I analyzed data from national...

["Anthropology","Evolutionary Studies","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.647v2
52 downloads
471 views

The evolution of the modern human (Homo sapiens) cranium is characterized by a reduction in the size of the feeding system, including reductions in the size of the facial skeleton, postcanine teeth, and the muscles involved in biting and chewing. The conventional...

["Anthropology","Computational Biology","Evolutionary Studies","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.2113v1
131 downloads
278 views

Megapodes are galliform birds endemic to Australasia and unusual amongst modern birds in that they bury their eggs for incubation in diverse substrates and using various strategies. Alectura lathami and Leipoa ocellata are Australian megapodes that build and nest...

["Animal Behavior","Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.2100v1
68 downloads
253 views

Background. Feirana quadranus and Feirana taihangnica, two species of frogs inhabiting in waterbodies in the Qinling Mountains, China, are believed to be sister species that diverged 4.6 million years ago. In their sympatric area, morphological variations found...

["Evolutionary Studies","Molecular Biology","Taxonomy","Zoology","Statistics"]
doi:10.7287/peerj.preprints.2058v2
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