Preprints (not yet peer-reviewed)

Primate species have been increasingly threatened by legal and illegal trade in China, mainly for biomedical research or as pets and traditional medicine, yet most reports on trade from China regard international trade. To assess a proxy for amount of national...

["Biodiversity","Conservation Biology","Zoology"]
doi:10.7287/peerj.preprints.27288v1
87 downloads
586 views

Background. Understanding genetic diversity and population structure is critically important for the conservation and management of endangered species. These factors are particularly relevant for species with small populations and/or restricted ranges, such as...

["Conservation Biology","Evolutionary Studies","Genetics","Zoology"]
doi:10.7287/peerj.preprints.27038v2
25 downloads
94 views

Amphibians are the most vulnerable vertebrates to biodiversity loss mediated by habitat destruction, climate change and diseases. Informed conservation management requires to improve the taxonomy of anurans to assess reliably the species´ geographic range. In this...

["Biodiversity","Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.27273v1
182 downloads
240 views

The Araripe Basin (Northeastern Brazil) has yielded a rich Cretaceous fossil fauna of both vertebrates and invertebrates found mainly in the Crato and Romualdo Formations, of Aptian and Albian ages respectively. Among the vertebrates, the turtles were proved quite...

["Paleontology","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.27262v1
56 downloads
75 views

Species distribution models (SDMs) have become an increasingly important tool in ecology, biogeography, evolution and, more recently, in conservation management, landscape planning and climate change research. The assessment of their predictive accuracy is one...

["Biodiversity","Biogeography","Conservation Biology","Ecology","Zoology"]
doi:10.7287/peerj.preprints.27257v1
49 downloads
153 views

Background. Brachycephalus includes miniaturized frogs with restricted geographical distributions throughout the Brazilian Atlantic Forest. Ecological data for most species are still scarce. For instance, advertisement calls have only been described for 12 of the...

["Animal Behavior","Zoology"]
doi:10.7287/peerj.preprints.27243v1
692 downloads
1,694 views

The oldest feathers known to date have been found in archosaurs capable to fly. However, some of them (scansoriopterygids) flied by the use of a membrane rather than feathers. We therefore propose a new mechanism for the origin of avian flight by the use of membranous...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.27213v1
188 downloads
518 views

Birds are unique among extant tetrapods in having pneumatic diverticula of the lungs and air sacs that pass among the viscera and muscles, under the skin, and into the skeleton. In addition, some birds also have supramedullary diverticula inside the neural canal,...

["Evolutionary Studies","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.27201v2
38 downloads
117 views

Background. Geographic variation in body size and condition can reveal differential local adaptation to resource availability or climatic factors. Body size and condition are related to fitness in garter snakes (Thamnophis), thus good body condition may increase...

["Ecology","Zoology"]
doi:10.7287/peerj.preprints.27205v1
63 downloads
241 views

Complete mitochondrial genomes of Indian tent turtle, Pangshura tentoria was sequenced and annotated as 16,657 bp in length. This first assembly was encoded by 37 genes: 13 protein coding genes (PCGs), 22 transfer RNA (tRNAs), two ribosomal RNA (rRNAs) as similar...

["Genomics","Zoology"]
doi:10.7287/peerj.preprints.27202v1
31 downloads
115 views

Background. The gut microbiota plays an important role in host immunity and metabolichomeostasis. Although analyses of gut microbiotas have been used to assess host health,as well as for disease prevention and treatment, no comparative study of gut microbiotasamong...

["Bioinformatics","Microbiology","Veterinary Medicine","Zoology"]
doi:10.7287/peerj.preprints.27193v1
44 downloads
127 views

The breeding range of the Red Fox Sparrow (Passerella iliaca iliaca) is generally recognized as comprising the boreal forest of Canada. However, recent observations suggest that the species is present during the summer months throughout much of the northeastern...

["Biogeography","Zoology"]
doi:10.7287/peerj.preprints.27192v1
202 downloads
410 views

The scarcity of free-standing water sources is a key determinant of animal and plant community structure in arid environments, and an understanding of the extent to which particular species use surface water is vital for modelling the effects of climate change...

["Ecology","Zoology","Anatomy and Physiology","Biosphere Interactions"]
doi:10.7287/peerj.preprints.3167v2
195 downloads
372 views

The use of personal ornaments by Neandertals is one of the scarce evidence of their symbolic behaviour. Among them stand up the eagle talons used presumably as pendants, in an analogous way than anatomically Modern Humans (Homo sapiens) did. Considering the broad...

["Anthropology","Evolutionary Studies","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.27133v1
57 downloads
872 views

Widely recognized as the largest terrestrial mammal in the Neotropics, the globally endangered, IUCN Red-listed, Baird’s tapir Tapirus bairdii has been in a continual decline due to habitat loss, localized hunting, and their low reproductive rates. Because of its...

["Biodiversity","Conservation Biology","Zoology"]
doi:10.7287/peerj.preprints.27128v1
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