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Total of 292 results See all subject areas
zoology

Aerobic activity levels increase with body temperature across vertebrates. Differences in these levels, from highly active to sedentary, are reflected in their ecology and behavior. Yet, the changes in the cardiovascular system that allow for greater oxygen supply...

["Biodiversity","Ecology","Zoology"]
doi:10.7717/peerj.346

Models of collective animal behaviour frequently make assumptions about the effects of neighbours on the behaviour of focal individuals, but these assumptions are rarely tested. One such set of assumptions is that the switch between active and inactive behaviour...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.344

In the Central Red Sea, healthy coral reefs meet intense coastal development, but data on the effects of related stressors for reef functioning are lacking. This in situ study therefore investigated the independent and combined effects of simulated overfishing...

["Ecology","Marine Biology","Zoology","Science and Medical Education"]
doi:10.7717/peerj.339

Students embarking on a bioscience degree course, such as Animal Science, often do not have sufficient experience in mathematics. However, mathematics form an essential and integral part of any bioscience degree and are essential to enhance employability. This...

["Agricultural Science","Zoology","Science and Medical Education"]
doi:10.7287/peerj.preprints.355v1

Predator–prey interactions are among the main ecological interactions that shape the diversity of biological form. In many cases, the evolution of the mollusc shell form is presumably driven by predation. However, the adaptive significance of several uncommon,...

["Animal Behavior","Ecology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.329

It has been widely accepted that aphids and their primary endosymbiotic bacteria Buchnera have strictly parallel diversification relationship. As the first reported case of insect-bacteria cospeciation, this parallel diversification hypothesis has been prevalent,...

["Entomology","Evolutionary Studies","Genetics","Microbiology","Zoology"]
doi:10.7287/peerj.preprints.346v1

Camera traps are commonly used for mammal surveys and many recent studies have published variable trap success rates. All published reports have focused survey efforts in protected areas or large contiguous forests, but we used camera traps in a highly altered...

["Biodiversity","Conservation Biology","Ecology","Zoology"]
doi:10.7287/peerj.preprints.344v1

In broiler chickens, genetic success for desired production traits is often shadowed by welfare concerns related to musculoskeletal health. Whilst these concerns are clear, a viable solution is still elusive. Part of the solution lies in knowing how anatomical...

["Agricultural Science","Developmental Biology","Evolutionary Studies","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.343v1

Genetic selection for improved meat yields, digestive efficiency and growth rates have transformed the biology of broiler chickens. Modern birds undergo a 50-fold multiplication in body mass in just six weeks, from hatching to slaughter weight. However, this selection...

["Agricultural Science","Developmental Biology","Evolutionary Studies","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.342v1

Weevils are one of the largest groups of living organisms, with more than 60,000 species feeding mostly on plants. With only one exception, their described larvae are typical plant-feeders, with mouthparts adapted to chewing plant material. Here we describe the...

["Animal Behavior","Entomology","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.339v1

Contagious parthenogenesis – a process involving rare functional males produced by a parthenogenetic lineage, which mate with coexisting sexual females resulting in fertile parthenogenetic offspring – is one of the most striking mechanisms responsible for the generation...

["Biodiversity","Evolutionary Studies","Genetics","Zoology"]
doi:10.7287/peerj.preprints.333v1

Quantitative analysis of organismal form is an important component for almost every branch of biology. Although generally considered an easily-measurable structure, the quantification of gastropod shell form is still a challenge because shells lack homologous structures...

["Developmental Biology","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.157v2

Loss of large mammalian carnivores may allow smaller mesopredators to become abundant and threaten other community members. There is considerable debate about mesopredator release and the role that other potential factors such as landscape variables and human alterations...

["Biodiversity","Conservation Biology","Ecology","Zoology"]
doi:10.7287/peerj.preprints.329v1

Garden Warblers Sylvia borin were studied during autumn stopover in Crete before crossing the barrier of the Mediterranean Sea and the Sahara Desert. Birds followed with transmitters show extensive stopover periods, which were longer in first-year birds, 16 days,...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.319

Brown-headed Cowbirds (Molothrus ater) are the most widespread avian brood parasite in North America, laying their eggs in the nests of approximately 250 host species that raise the cowbird nestlings as their own. It is currently unknown how these heterospecific...

["Evolutionary Studies","Genetics","Microbiology","Zoology"]
doi:10.7717/peerj.321

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