Peer-reviewed Articles - Biology

32 downloads
174 views

Background Advances in 3D shape capture technology have made powerful shape analyses, such as geometric morphometrics, more feasible. While the highly accurate micro-computed tomography (µCT) scanners have been the “gold standard,” recent improvements in 3D surface...

["Biodiversity","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.5032
108 downloads
887 views

We examine the phylogenetic structure and morphological differentiation within the Hynobius kimurae–H. boulengeri species complex—a widely-distributed group of stream-breeding hynobiid salamanders, inhabiting montane areas of western, central and eastern parts...

["Biodiversity","Biogeography","Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7717/peerj.5084
37 downloads
327 views

We present two cases of study of ontogenetic allometry in outlines of bivalves using longitudinal data, a rarity among fossils, based on the preserved post-larval record of shells. The examples are two infaunal burrowing bivalves of the southern South America,...

["Evolutionary Studies","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.5051
26 downloads
398 views

Dispersal is a fundamental trait of a species’ biology. High dispersal results in weakly structured or even panmictic populations over large areas, whereas weak dispersal enables population differentiation and strong spatial structuring. We report on the genetic...

["Ecology","Entomology","Evolutionary Studies","Population Biology"]
doi:10.7717/peerj.5024
49 downloads
391 views

Horizontal gene transfer (HGT) has had major impacts on the biology of a wide range of organisms from antibiotic resistance in bacteria to adaptations to herbivory in arthropods. A growing body of literature shows that HGT between non-animals and animals is more...

["Evolutionary Studies","Genomics"]
doi:10.7717/peerj.5067
52 downloads
558 views

Background Current evidence suggests that for more robust estimates of species tree and divergence times, several unlinked genes are required. However, most phylogenetic trees for non-model organisms are based on single sequences or just a few regions, using traditional...

["Biodiversity","Evolutionary Studies","Genomics","Plant Science","Taxonomy"]
doi:10.7717/peerj.4916
23 downloads
102 views

Invasive species are a global threat to biodiversity. Cases where the invasion has been tracked since its beginning are rare, however, such that the first interactions between invasive and native species remain poorly understood. Communication behavior is an integral...

["Animal Behavior","Ecology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.4888
263 downloads
1,351 views

The reproduction of titanosaur dinosaurs is still a complex and debated topic. Their Late Cretaceous nesting sites are distributed worldwide and their eggs display substantial morphological variations according to the parent species. In contrast to the typical...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.4971
108 downloads
662 views

The patterns of bone modeling and mineral mobilization (skeletal homeostasis) among mammals other than humans and laboratory rodents are still poorly known. In this study we assessed the pattern of bone formation and bone resorption in the femur of a wild population...

["Developmental Biology","Evolutionary Studies","Zoology","Anatomy and Physiology","Histology"]
doi:10.7717/peerj.4944
27 downloads
230 views

Supertree methods enable the reconstruction of large phylogenies. The supertree problem can be formalized in different ways in order to cope with contradictory information in the input. Some supertree methods are based on encoding the input trees in a matrix; other...

["Bioinformatics","Computational Biology","Evolutionary Studies","Taxonomy","Computational Science"]
doi:10.7717/peerj.4987
392 downloads
2,116 views

Background Plesiosaurs are marine reptiles that arose in the Late Triassic and survived to the Late Cretaceous. They have a unique and uniform bauplan and are known for their very long neck and hydrofoil-like flippers. Plesiosaurs are among the most successful...

["Evolutionary Studies","Paleontology","Statistics","Histology"]
doi:10.7717/peerj.4955
51 downloads
544 views

Although comparative studies of anuran ontogeny have provided new data on heterochrony in the life cycles of frogs, most of them have not included ossification sequences. Using differential staining techniques, we observe and describe differences and similarities...

["Biodiversity","Developmental Biology","Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7717/peerj.4525
53 downloads
247 views

Both wild-type and teratological seed cones are described in the monoecious conifer Glyptostrobus pensilis and compared with those of other Cupressaceae sensu lato and other conifers. Some Cupressaceae apparently possess a proliferation of axillary structures in...

["Biodiversity","Evolutionary Studies","Plant Science","Forestry"]
doi:10.7717/peerj.4948
52 downloads
250 views

Objectives There are large populations of indigenous horse (Equus caballus) in China and some other parts of East Asia. However, their matrilineal genetic diversity and origin remained poorly understood. Using a combination of mitochondrial DNA (mtDNA) and hypervariable...

["Agricultural Science","Evolutionary Studies","Genetics","Zoology"]
doi:10.7717/peerj.4896
335 downloads
1,601 views

Bellusaurus sui is an enigmatic sauropod dinosaur from the Middle-Late Jurassic Shishugou Formation of northwest China. Bellusaurus is known from a monospecific bonebed preserving elements from more than a dozen juvenile individuals, including numerous bones of...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.4881

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