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Total of 257 results See all subject areas
animal behavior

Castration can change levels of plasma testosterone. Androgens such as testosterone play an important role in stabilizing birdsong. The robust nucleus of the arcopallium (RA) is an important premotor nucleus critical for singing. In this study, we investigated...

["Animal Behavior","Neuroscience"]
doi:10.7717/peerj.352

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

This study aimed to determine the association of herbivore behavior with cues from producers. We used stream grazer Glossosoma larvae and determined their crawling direction in relation to the chemical and visual cues from microalgae. The experimental treatments...

["Animal Behavior","Ecology"]
doi:10.7287/peerj.preprints.350v1

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

Background. Parental absences in childhood are often associated with accelerated reproductive maturity in humans. These results are counterintuitive for evolutionary social scientists because reductions in parental investment should be detrimental for offspring,...

["Animal Behavior","Anthropology","Developmental Biology","Evolutionary Studies","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.345v1

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

Understanding female mate preference is important for determining the strength and the direction of sexual trait evolution. Male signalling intensity is often an important predictor of mating success because higher intensity (louder) signallers are detectable at...

["Animal Behavior","Ecology","Entomology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.324v1

Passive acoustic monitoring is playing an increasing role in the detection of endangered North Atlantic right whales (NARW). Previous acoustic monitoring has relied on a single stereotyped vocalization, the upcall. Here the entire repertoire produced by NARW during...

["Animal Behavior","Conservation Biology","Marine Biology"]
doi:10.7287/peerj.preprints.322v1

Wing pigmentation in Calopteryx damselflies, caused by the deposition of melanin, is energetically expensive to produce and enhances predation risk. However, patterns of melanisation are used in species identification, greater pigmentation is an accurate signal...

["Animal Behavior","Biogeography","Ecology","Entomology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.316v1

Predator-prey interactions have a major effect on species abundance and diversity and aggregation is a well-known anti-predator behavior. For immobile prey, the effectiveness of aggregation depends on two conditions: (a) the inability of the predator to consume...

["Animal Behavior","Ecology"]
doi:10.7287/peerj.preprints.305v1

Emberizid sparrows (emberizidae) have played a prominent role in the study of avian vocal communication and social behavior. We present here brain transcriptomes for three emberizid model systems, song sparrow Melospiza melodia, white-throated sparrow Zonotrichia...

["Animal Behavior","Evolutionary Studies","Genomics","Neuroscience"]
doi:10.7287/peerj.preprints.297v3

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

Castration can change levels of plasma testosterone. Androgens such as testosterone play an important role in stabilizing birdsong. The robust nucleus of the arcopallium (RA) is an important premotor nucleus critical for singing. In this study, we investigated...

["Animal Behavior","Neuroscience"]
doi:10.7287/peerj.preprints.247v2

The tremendous variation in brain size among vertebrates has long been thought to be related to differences in species’ metabolic rates. It is thought that species with higher metabolic rates can supply more energy to support the relatively high cost of brain tissue....

["Animal Behavior","Ecology","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.301

Psychoneuroimmunology studies the increasing number of connections between neurobiology, immunology and behaviour. We establish Drosophila melanogaster as a tractable model in this field by demonstrating the effects of the immune response on two fundamental behaviours:...

["Animal Behavior","Entomology","Zoology"]
doi:10.7287/peerj.preprints.285v1

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