PeerJ PrePrints - where science is heading

Background. Studies on the geographic variation of the matamata, Chelus fimbriatus, have previously demonstrated differences between carapace shape, plastral pigmentation and the ventral coloration of the neck between populations from the Amazon and Orinoco river...

["Biodiversity","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.870v1

Background : After menopause women experience a markedly increased risk of cardiovascular events due to the loss of estrogen. As estrogen replacement is associated with negative side effects, a more attractive alternative to help maintain a good cardiovascular...

["Anatomy and Physiology","Women's Health"]
doi:10.7287/peerj.preprints.869v1
3 downloads

Software piracy is the most significant and burning issue in the age of the internet. Software piracy has been a direct threat for software vendors in terms of revenue and, therefore, a number of effective and efficient techniques have been employed for the detection...

["Algorithms and Analysis of Algorithms","Emerging Technologies","Security and Privacy","Programming Languages","Software Engineering"]
doi:10.7287/peerj.preprints.868v1
2 downloads

Jellyfish are highly topical within studies of pelagic food-webs and there is a growing realisation that their role is more complex than once thought. Efforts being made to include jellyfish within fisheries and ecosystem models are an important step forward, but...

["Ecology","Marine Biology"]
doi:10.7287/peerj.preprints.867v1
1 download

Bacterial populations transition between growing and non-growing phases, based on nutrient availability and stress conditions. The hallmark of a growing state is anabolism, including DNA replication and cell division. In contrast, bacteria in a growth-arrested...

["Bioinformatics","Computational Biology","Microbiology","Synthetic Biology"]
doi:10.7287/peerj.preprints.866v1
2 downloads

Little is known about mechanisms promoting the diversity of antipredation strategies found in nature. In this study I explore how habitat heterogeneity may have profound effects on predator–prey communication. Habitat heterogeneity inevitably increases background...

["Animal Behavior","Biodiversity","Ecology","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.865v1
41 downloads
70 views

Comparing inferences among datasets generated using short read sequencing may provide insight into the concerted effects of evolutionary processes across organisms, but comparisons are complicated by biases introduced during dataset assembly. Sequence similarity...

["Bioinformatics","Evolutionary Studies","Genetics","Genomics","Molecular Biology"]
doi:10.7287/peerj.preprints.864v1
32 views

Background. Solemydidae is an enigmatic clade of stem turtles, which is primarily represented by fragmentary shell material found in Upper Jurassic and Cretaceous deposits of Europe and North America. Specimens are typically identified by a distinct surface ornamentation...

["Paleontology"]
doi:10.7287/peerj.preprints.863v1
10 views

Background. Large-sized testudinids had a long evolutionary history in Europe during the last 50 million years before becoming extinct in the beginning of the Pleistocene. Despite a 150-year long history in research and a decent fossil record, the European large...

["Paleontology"]
doi:10.7287/peerj.preprints.862v1
3 downloads
10 views

Adaptation to pollinators is a key factor of diversification in angiosperms. The Caribbean sister genera Rhytidophyllum and Gesneria present an important diversification of floral characters. Most of their species can be divided in two major pollination syndromes....

["Biodiversity","Evolutionary Studies","Genetics","Plant Science"]
doi:10.7287/peerj.preprints.861v1
129 downloads
156 views

Are motor neurons just passive relayers of the signals they receive? Or, do motor neurons shape the signals before passing them on to the muscles, thereby influencing the timing of motor behavior? Few direct tests of the role of motor neuron intrinsic properties...

["Neuroscience","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.469v2
11 downloads
34 views

There is no agreement on the etiology of chronic fatigue syndrome (CFS), and the main theories (behavioural and viral/immune) do not satisfactorily explain all findings. A growing body of evidence shows that CFS appears to be a dysfunction of the stress system—and...

["Neurology","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.860v1
26 downloads
44 views

Background. Previous quantitative studies about Bauruemys elegans (Suárez, 1969) shell variation, as well as the taphonomy interpretation of its type locality, have suggested that all specimens collected in this locality may have belonged to the same population....

["Paleontology","Zoology"]
doi:10.7287/peerj.preprints.859v1
66 downloads
114 views

Background. The origin of turtles, their earliest evolution and the homologies of the elements building their shell are still enigmatic and remain an object of ongoing discussion and research. Although the oldest fully shelled turtle – Proterochersis robusta from...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.858v1
5 downloads
5 views

In 2011, I proposed a new hypothesis for the evolution and development of the five-rayed structure of echinoderms, the Hexamer Hypothesis (Lussanet, 2011). According to this hypothesis, the five-rayed structure develops by reduction from a six-rayed Bauplan. Crinoids...

["Developmental Biology","Paleontology"]
doi:10.7287/peerj.preprints.857v1

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A PeerJ 'PrePrint' is a draft that has not yet been peer reviewed for formal publication. Similar to preprint servers that already exist (for example arXiv.org), authors can submit draft, incomplete, or final versions of articles they are working on.

By using this service, authors establish precedent; they can solicit feedback, and they can work on revisions of their manuscript. Once they are ready, they can submit their PrePrint manuscript into the peer reviewed PeerJ journal (although it is not a requirement to do so).

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