For many organisms, chemoreception plays a key role in numerous aspects of daily life. Crayfish use chemical signals to find mates, warn conspecifics of predators, and relay social status. While many of these situations have been studied in detail, behavior of conspecifics toward chemical signals from molted individuals has not been thoroughly examined. The physiology of crayfish changes dramat...

http://dx.doi.org/10.1016/j.foreco.2014.03.043 0378-1127/ 2014 Published by Elsevier B.V. ⇑ Corresponding author. Current address: University of Kentucky, Department of Forestry, 214 TP Cooper Building, Lexington, KY 40546-0073, USA. Tel.: +1 859 257 8289. E-mail addresses: [email protected] (T.A. Maigret), [email protected] (J.J. Cox), [email protected] (D.R. Schneider), [email protected] ...

We consider smooth actions of totally disconnected groups on simplicial complexes and compare different equivariant cohomology groups associated to such actions. Our main result is that the bivariant equivariant cohomology theory introduced by Baum and Schneider can be described using equivariant periodic cyclic homology. This provides a new approach to the construction of Baum and Schneider as...