Peer-reviewed Articles

24 downloads
340 views

Background The wood frog, Rana sylvatica, tolerates freezing as a means of winter survival. Freezing is considered to be an ischemic/anoxic event in which oxygen delivery is significantly impaired. In addition, cellular dehydration occurs during freezing because...

["Biochemistry","Cell Biology","Genetics","Molecular Biology","Zoology"]
doi:10.7717/peerj.2797
412 downloads
7,160 views

Azhdarchid pterosaurs include the largest animals to ever take to the skies with some species exceeding 10 metres in wingspan and 220 kg in mass. Associated skeletons show that azhdarchids were long-necked, long-jawed predators that combined a wing planform suited...

["Paleontology","Zoology"]
doi:10.7717/peerj.2908
53 downloads
242 views

We present the first study that evaluates jaguar-puma interactions in the arid lands of northern Mexico, where jaguars have their northernmost breeding population and both predators are persecuted for livestock depredation. We tested whether jaguars are the dominant...

["Conservation Biology","Ecology","Zoology"]
doi:10.7717/peerj.2886
61 downloads
315 views

Background The shells of molluscs survive well in many sedimentary contexts and yield information about the diet of prehistoric humans. They also yield evidence of symbolic behaviours through their use as beads for body adornments. Researchers often analyse the...

["Ecology","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.2903
20 downloads
127 views

Antipredatory defenses are maintained when benefit exceeds cost. A weak predation pressure may lead insular lizards to tameness. Podarcis lilfordi exhibits a high degree of insular tameness, which may explain its extinction from the main island of Menorca when...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.2828
80 downloads
337 views

Species distribution models (SDMs) have become an essential tool in ecology, biogeography, evolution and, more recently, in conservation biology. How to generalize species distributions in large undersampled areas, especially with few samples, is a fundamental...

["Biodiversity","Biogeography","Conservation Biology","Ecology","Zoology"]
doi:10.7717/peerj.2849
20 downloads
180 views

Flies use specialized photoreceptors R7 and R8 in the dorsal rim area (DRA) to detect skylight polarization. R7 and R8 form a tiered waveguide (central rhabdomere pair, CRP) with R7 on top, filtering light delivered to R8. We examine how the division of a given...

["Animal Behavior","Biophysics","Mathematical Biology","Neuroscience","Zoology"]
doi:10.7717/peerj.2772
274 downloads
1,098 views

Non-mammaliaform cynodonts gave rise to mammals but the reproductive biology of this extinct group is still poorly known. Two exceptional fossils of Galesaurus planiceps and Thrinaxodon liorhinus, consisting of juveniles closely associated with an adult, were briefly...

["Animal Behavior","Evolutionary Studies","Paleontology","Zoology"]
doi:10.7717/peerj.2875
47 downloads
272 views

A new sea star species, H. djakonovi sp.n., was discovered in Rudnaya Bay in the Sea of Japan. This is a sympatric species of the well-known and common species Henricia pseudoleviuscula Djakonov, 1958. Both species are similar in body size and proportions, shape...

["Biodiversity","Marine Biology","Taxonomy","Zoology"]
doi:10.7717/peerj.2863
37 downloads
248 views

An adult Buteo was found dead as a road-kill south of Sacramento, California, and was thought to represent the first state record of the eastern Red-shouldered Hawk (B. lineatus lineatus;). It is now a specimen in the Museum of Wildlife and Fisheries Biology (WFB...

["Molecular Biology","Taxonomy","Zoology"]
doi:10.7717/peerj.2850
52 downloads
186 views

Fish color patterns are among the most diverse phenotypic traits found in the animal kingdom. Understanding the molecular and cellular mechanisms that control in chromatophore distribution and pigmentation underlying this diversity is a major goal in developmental...

["Aquaculture, Fisheries and Fish Science","Biodiversity","Evolutionary Studies","Molecular Biology","Zoology"]
doi:10.7717/peerj.2843
51 downloads
320 views

Background The extent of social behaviour among reptiles is underappreciated. Two types of aggregations are recognized in lizards: ecological and social, i.e., related to the attraction to a site or to animals of the same species, respectively. As most lizards...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.2802
69 downloads
347 views

Sycophaginae is a group of non-pollinating fig wasps considered closely related to the fig pollinators (Agaoninae, Tetrapusiinae, and Kradibiinae) in the most recent phylogenetic analyses. They occur in all tropical regions and are associated with Ficus subgenera...

["Biodiversity","Entomology","Taxonomy","Zoology"]
doi:10.7717/peerj.2842
73 downloads
225 views

Aggressive interactions among closely related species are common, and can play an important role as a selective pressure shaping species traits and assemblages. The nature of this selective pressure depends on whether the outcomes of aggressive contests are asymmetric...

["Animal Behavior","Ecology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.2847
89 downloads
282 views

Background The gastrointestinal tract (GIT) microbiota is essential to metabolic health, and the prevalence of the Western diet (WD) high in fat and sugar is increasing, with evidence highlighting a negative interaction between the GIT and WD, resulting in liver...

["Microbiology","Veterinary Medicine","Zoology"]
doi:10.7717/peerj.2840

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