1 download
1 view

It has recently been proposed that the caudal curvature (concave caudal side) observed in the radioulna of terrestrial quadrupeds is an adaptation to the habitual action of the triceps muscle which causes cranial bending strains (compression on cranial side). The...

["Animal Behavior","Biophysics","Zoology"]
doi:10.7717/peerj.3229
24 downloads
479 views

In Washington D.C., recent legislation authorizes citizens to test if products are properly represented and, if they are not, to bring a lawsuit for the benefit of the general public. Recent studies revealing the widespread phenomenon of seafood substitution across...

["Conservation Biology","Evolutionary Studies","Genetics","Zoology","Public Health"]
doi:10.7717/peerj.3234
78 downloads
685 views

Thalattosuchians were highly specialised aquatic archosaurs of the Jurassic and Early Cretaceous, and represent a peak of aquatic adaptation among crocodylomorphs. Relatively little is known of their endocranial anatomy or its relevance for the evolution of sensory...

["Paleontology","Zoology"]
doi:10.7717/peerj.3225
23 downloads
111 views

Although hedgehogs are well-known examples of postglacial recolonisation, the specific processes that shape their population structures have not been examined by detailed sampling and fast-evolving genetic markers in combination with model based clustering methods....

["Biogeography","Genetics","Zoology"]
doi:10.7717/peerj.3163
5 downloads
67 views

A salivary gland salivation stimulating peptide was identified from the salivary glands of the migratory locust by its ability to stimulate cAMP production in the same tissue. The gene coding for this peptide has recently been shown to code for a precursor consisting...

["Agricultural Science","Biochemistry","Entomology","Neuroscience","Zoology"]
doi:10.7287/peerj.preprints.2940v1
44 downloads
232 views

Background The Australian redclaw crayfish (Cherax quadricarinatus, von Martens), is native to Australasia, but has been widely translocated around the world due to aquaculture and aquarium trade. Mostly as a result of escape from aquaculture facilities, this species...

["Aquaculture, Fisheries and Fish Science","Biodiversity","Ecology","Zoology"]
doi:10.7717/peerj.3135
75 downloads
320 views

The widespread African clawed frog (Xenopus laevis) occurs in sympatry with the IUCN Endangered Cape platanna (Xenopus gilli) throughout its entire range in the south-western Cape, South Africa. In order to investigate aspects of the interspecific competition between...

["Aquaculture, Fisheries and Fish Science","Ecology","Zoology"]
doi:10.7717/peerj.3130
219 downloads
1,171 views

1. Stable isotope analysis is a widely used tool for the reconstruction and interpretation of animal diets and trophic relationships. Analytical tools have improved the robustness of inferring the relative contribution of different prey sources to an animal’s diet...

["Computational Biology","Ecology","Ecosystem Science","Zoology","Statistics"]
doi:10.7287/peerj.preprints.1950v3
22 downloads
93 views

Measurements of historical specimens are widely applied in studies of taxonomy, systematics, and ecology, but biologists often assume that the effects of preservative chemicals on the morphology of amphibian specimens do not affect their analyses. We compared the...

["Zoology"]
doi:10.7287/peerj.preprints.2930v1
18 downloads
161 views

Background. With their Pan-American distribution, long-nosed armadillos (genus Dasypus) constitute an understudied model for Neotropical biogeography. This genus currently comprises seven recognized species, the nine-banded armadillo (D. novemcinctus) having the...

["Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2923v1
21 downloads
173 views

Background. The systematics of long-nosed armadillos (genus Dasypus) has been mainly based on a handful of external morphological characters and classical measurements. Here, we studied the pattern of morphological variation in the skull of long-nosed armadillos...

["Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2924v1
14 downloads
123 views

Radio telemetry is a common tool to monitor animals in many ecosystems. Radio telemetry, or radio tracking, typically uses a tag or collar with a radio transmitter attached to an animal that is monitored by researchers with a receiver. This technique is used for...

["Biodiversity","Conservation Biology","Ecology","Zoology"]
doi:10.7287/peerj.preprints.2922v1
220 downloads
799 views

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

["Paleontology","Zoology"]
doi:10.7717/peerj.2890
99 downloads
624 views

Spinosaurids (Diapsida: Spinosauridae) and sphenacodontids (Synapsida: Sphenacodontidae) share not only a characteristic tall neural spines, but also an atypical – compared to their close respective relatives – ecology, i.e. apparently piscivorous and possibly...

["Ecology","Evolutionary Studies","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.2917v1
42 downloads
321 views

Ostracods are small bivalved crustaceans widely distributed in aquatic environments and in total 99 species have been recorded in genus Euphilomedes Kornicker, 1967. In this study, we further describe two new species of benthic ostracods in this genus, Euphilomedes...

["Biodiversity","Marine Biology","Taxonomy","Zoology"]
doi:10.7717/peerj.3146

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