Preprints (not yet peer-reviewed)

35 downloads
152 views

La Plata Island, Machalilla National Park, is located 30 km off the Ecuadorian coast. In June 2000, I surveyed the avifauna of La Plata Island. In total I observed 57 species of birds (25 families). At least 17 species are known to breed on the island; in fact,...

["Biodiversity","Zoology"]
doi:10.7287/peerj.preprints.2181v1
17 downloads
223 views

The Glassfrogs (Centrolenidae) are an apparently monophyletic group of Neotropical anurans that includes 136 described species. The phylogenetic relationships of the family with other clades are still poorly understood and at the moment the family can be defined...

["Biodiversity","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2180v1
39 downloads
171 views

The diversity and ecology of urban bird communities have been extensively studied in Neartic and Paleartic areas, however, little is known about urban Neotropical areas. Quito, capital city of Ecuador, is located on a highland valley in the megadiverse tropical...

["Biodiversity","Ecology","Ecosystem Science","Zoology"]
doi:10.7287/peerj.preprints.2171v1
50 downloads
200 views

Ecuador has the biggest number of amphibian species per unit of area in the world (427 species in 276,840 km2). Glass frogs (Centrolenidae), with 30 species, constitute 7.06 % of the Ecuadorian anurans. However, the current state of knowledge of this family in...

["Biodiversity","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2164v1
139 downloads
354 views

Ecuador has the biggest number of amphibian species per unit of area in the world (425 species in 283,560 km2). In the last decade, conservative estimates indicate that at least 26 species of Ecuadorian amphibians have declined or gone extinct. The reasons for...

["Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2159v2
44 downloads
159 views

The fish community in the Churince system includes endemic, native and introduced species. Fish diets were analysed in order to evaluate the tropho-dynamics of the community. Nine sampling campaigns were carried out between February 2011 and May 2014, and 556 specimens...

["Biodiversity","Ecology","Zoology"]
doi:10.7287/peerj.preprints.2154v1
54 downloads
237 views

Calcification is one of the most distinctive traits of scleractinian corals. Their hard skeletons form the substratum of reef ecosystems and confer on corals their remarkable diversity of shapes. Corallimorpharians are non-calcifying, close relatives of scleractinian...

["Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2151v1
92 downloads
157 views

This experiment was conducted to determine the bioavailability of D-methionine (Met) relative to L-Met for nursery pigs using the slope-ratio assay. A total of 50 crossbred barrows with an initial BW of 13.5 kg (SD = 1.0) were used in an N balance study. A Met-deficient...

["Agricultural Science","Animal Behavior","Veterinary Medicine","Zoology","Nutrition"]
doi:10.7287/peerj.preprints.2130v1
47 downloads
120 views

Background. Although the trot is described as a diagonal gait, contacts of the diagonal pairs of hooves are not usually perfectly synchronized. Although subtle, the timing dissociation between contacts of each diagonal pair could have consequences on gait dynamics...

["Zoology","Anatomy and Physiology","Kinesiology"]
doi:10.7287/peerj.preprints.2114v1
56 downloads
134 views

Non-invasive measures of the stress response are used to understand the impacts of natural and anthropogenic disturbances on wild animals. They can, however, be challenging to interpret without additional contextual information and specifics of the animals in question....

["Animal Behavior","Conservation Biology","Ecology","Zoology"]
doi:10.7287/peerj.preprints.2092v1
69 downloads
253 views

Background. Feirana quadranus and Feirana taihangnica, two species of frogs inhabiting in waterbodies in the Qinling Mountains, China, are believed to be sister species that diverged 4.6 million years ago. In their sympatric area, morphological variations found...

["Evolutionary Studies","Molecular Biology","Taxonomy","Zoology","Statistics"]
doi:10.7287/peerj.preprints.2058v2
130 downloads
274 views

The initial development of the Nasonia in vitro germ-free rearing system in 2012 enabled investigations of Nasonia-microbiota interactions and real-time visualization of metamorphosis. However, the use of antibiotics, bleach, and fetal bovine serum in this in vitro...

["Ecology","Entomology","Zoology"]
doi:10.7287/peerj.preprints.2088v1
37 downloads
201 views

Over the past two decades, populations of Shiras moose (Alces alces shirasi) in western Wyoming have declined. Recent work on the Jackson herd in northwest Wyoming suggests that the 1988 Yellowstone fires and regional drought contributed to a considerable decline...

["Ecology","Zoology"]
doi:10.7287/peerj.preprints.2056v1
71 downloads
318 views

The objective of this pilot study was to evaluate the feasibility of Flash Visual Evoked Potentials (FVEPs) testing in birds of prey in a clinical setting and to describe the protocol and the baseline data for normal vision in this species. FVEP recordings were...

["Neuroscience","Veterinary Medicine","Zoology","Neurology"]
doi:10.7287/peerj.preprints.1875v2
60 downloads
370 views

Over the past 20 years, the study of personality has blossomed within primatology. Rating inventories have been extensively used across species to identify personality factor structures for different species. Chimpanzees share a common six-factor structure, composed...

["Animal Behavior","Evolutionary Studies","Zoology","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.1916v2
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