Peer-reviewed Articles

Total of 279 results
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zoology
411 downloads
1,937 views

The early evolution of archosauromorphs during the Permo-Triassic constitutes an excellent empirical case study to shed light on evolutionary radiations in deep time and the timing and processes of recovery of terrestrial faunas after a mass extinction. However,...

["Evolutionary Studies","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.1778
104 downloads
1,106 views

Echinoderm population collapses, driven by disease outbreaks and climatic events, may be important drivers of population dynamics, ecological shifts and biodiversity. The northeast Pacific recently experienced a mass mortality of sea stars. In Howe Sound, British...

["Biodiversity","Ecology","Marine Biology","Zoology"]
doi:10.7717/peerj.1980
32 downloads
219 views

Immunocompetence benefits animal fitness by combating pathogens, but also entails some costs. One of its main components is fever, which in ectotherms involves two main types of costs: energy expenditure and predation risk. Whenever those costs of fever outweigh...

["Ecology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.1972
121 downloads
1,406 views

Citizen science can increase the scope of research in the marine environment; however, it suffers from necessitating specialized training and simplified methodologies that reduce research output. This paper presents a simplified, novel survey methodology for citizen...

["Aquaculture, Fisheries and Fish Science","Ecology","Environmental Sciences","Marine Biology","Zoology"]
doi:10.7717/peerj.1960
79 downloads
507 views

Morphometric differences in the optical morphology of symbiotic palaemonid shrimps can be observed among species symbiotic with different host organisms. Discriminant functional analysis revealed three distinct groups within the species examined. Of these, bivalve...

["Ecology","Marine Biology","Zoology"]
doi:10.7717/peerj.1926
123 downloads
449 views

Sleeping exposes lizards to predation. Therefore, sleeping strategies must be directed towards avoiding predation and might vary among syntopic species. We studied sleeping site characteristics of two syntopic, congeneric lizards—the Bay Island forest lizard, Coryphophylax...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.1856
64 downloads
301 views

The Black-necked Crane Grus nigricollis is a globally vulnerable species whose food is the factor determining its long-term survival. Understanding dietary habits, food preferences, and related factors will facilitate the development of effective conservation plans...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.1968
45 downloads
384 views

Melatonin is a key hormone in the regulation of circadian rhythms of vertebrates, including songbirds. Understanding diurnal melatonin fluctuations and being able to reverse or simulate natural melatonin levels are critical to investigating the influence of melatonin...

["Animal Behavior","Ecology","Neuroscience","Zoology"]
doi:10.7717/peerj.1939
110 downloads
459 views

Cytochrome c oxidase I (COI) is a powerful marker for DNA barcoding of animals, with good taxonomic resolution and a large reference database. However, when used for DNA metabarcoding, estimation of taxa abundances and species detection are limited due to primer...

["Biodiversity","Conservation Biology","Genetics","Molecular Biology","Zoology"]
doi:10.7717/peerj.1966
46 downloads
283 views

In addition to hypopigmentation of the skin and red iris colouration, albino animals also display distinct physiological and behavioural alterations. However, information on the social interactions of albino animals is rare and has mostly been limited to specially...

["Animal Behavior","Aquaculture, Fisheries and Fish Science","Zoology"]
doi:10.7717/peerj.1937
69 downloads
370 views

The evolution of insect male genitalia has received much attention, but there is still a lack of data on the macroevolutionary origin of its extraordinary variation. We used a calibrated molecular phylogeny of 71 of the 150 known species of the beetle genus Limnebius...

["Biodiversity","Entomology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.1882
308 downloads
1,202 views

The cranial and postcranial anatomy of the basal hadrosaurid dinosaur Eotrachodon orientalis, from the uppermost Santonian of southern Appalachia (southeastern U.S.A.), is described in detail. This animal is the only known pre-Campanian non-lambeosaurine hadrosaurid,...

["Paleontology","Taxonomy","Zoology","Histology"]
doi:10.7717/peerj.1872
78 downloads
696 views

Afrotheria is a strongly supported clade within placental mammals, but morphological synapomorphies for the entire group have only recently come to light. Soft tissue characters represent an underutilized source of data for phylogenetic analysis, but nonetheless...

["Developmental Biology","Evolutionary Studies","Zoology","Histology"]
doi:10.7717/peerj.1906
38 downloads
218 views

The fovea is one of the most studied retinal specializations in vertebrates, which consists of an invagination of the retinal tissue with high packing of cone photoreceptors, leading to high visual resolution. Between species, foveae differ morphologically in the...

["Veterinary Medicine","Zoology","Ophthalmology","Histology"]
doi:10.7717/peerj.1785
67 downloads
471 views

Natural history museum collections (NHCs) represent a rich and largely untapped source of data on demography and population movements. NHC specimen records can be corrected to a crude measure of collecting effort and reflect relative population densities with a...

["Animal Behavior","Biogeography","Ecology","Environmental Sciences","Zoology"]
doi:10.7717/peerj.1871

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