http://dx.doi.org/10.1016/j.anbehav.2016.03.004 0003-3472/© 2016 The Association for the Study of A Dominance hierarchies emerge when individuals must compete for access to resources such as food, territory or mates. Here, using traditional and network social hierarchy analysis, we show that 10 groups of 12 male laboratory CD1 mice living in large vivaria consistently form extremely linear domi...

Recent studies indicate that glutamate metabotropic receptors (mGlu) 1 and 5 are involved in the regulation of aggressive behaviour. Brain distribution of mGlu2/3 receptors suggests that they may also play important roles in emotional responses, including aggression. This study examines the effects of LY379268 (0.254 mg/kg, ip), a selective agonist of the mGlu2/3 receptors, on agonistic interac...

The classic Early Jurassic age theropod footprints Eubrontes giganteus. Anchisauripus sillil1Ulni. and Grallator parallelus were established by Edward Hitchcock in 1836-1847 and are the type ichnospecies of their respective ichnogenera. We identify, describe, and figure the type specimens in detail for the first time since they were named. We also figure and describe the other elements of the t...

logues rocks during entry into the Earth’s atmosphere F. Foucher, F. Westall , J.-M. Bény , F. Brandstätter , and R. Demets , 1 Centre de Biophysique Moléculaire, UPR CNRS 4301, Orléans, France ([email protected]), 2 Institut des Sciences de la Terre d’Orléans, UMR CNRS 6113, Orléans, France, 3 Naturhistorisches Museum, Burgring 7, 1010 Wien, Austria, 4 European Space & Technolog...

The study of stable isotopes in fossil bioapatite has yielded useful results and has shown that bioapatites are able to faithfully record paleo-environmental and paleo-climatic parameters from archeological to geological timescales. In an effort to establish new proxies for the study of bioapatites, intra-tooth records of enamel carbonate stable isotope ratios from a modern horse are compared w...

The nine-banded armadillo (Dasypus novemcinctus) is a well known burrower, but individuals spend the majority of their time above ground foraging for soil organisms by repeatedly digging pits through the soil surface. Little ichnological attention has been given to these foraging pits even though their great prevalence within the geographic range of extant armadillos implies that they might hav...

Bioturbation can influence petrophysical properties (e.g., porosity, permeability) of sedimentary rocks and, in consequence, reservoir quality. The impact be positive, negative, or neutral, requiring detailed ichnological analysis. Ophiomorpha , a branched cylindrical burrow with diagnostic peloidal wall, may present bioturbated reservoirs that exhibit both super-permeability and reduced porosi...