This new paper
reporting Campbell Park research may be of interest to some list
members-
Feeney,
William. E. and Naomi E. Langmore (2015). “Superb Fairy-wrens (Malurus
cyaneus) increase vigilance near their nest with the perceived risk of brood
parasitism.” The Auk 132(2): 359-364.
Abstract:
Brood parasites typically impose costs on their hosts, which select for host
defenses. However, where defenses are costly, hosts can benefit by facultative
_expression_ of defenses in relation to the risk of parasitism. The results of our
model-presentation experiments show that Superb Fairy-wrens (Malurus
cyaneus) mediate vigilance around their nest according to their perceived
risk of brood parasitism; when the risk of parasitism is high, they increase the
time they spend in the vicinity of their nests. In combination with previous
studies, these data suggest that Superb Fairy-wrens have a plastic defense
portfolio that can be acquired rapidly and deployed facultatively to prevent
parasitism while minimizing wasteful investment in defenses in the absence of
parasitism.
William
E. Feeney1,2* and Naomi E. Langmore1
1Evolution,
Ecology and Genetics, Research School of Biology, The Australian National
University, Canberra, Australia
2Evolutionary
Ecology Group, Department of Zoology, University of Cambridge, Cambridge, United
Kingdom
*Corresponding
author:
Robin Hide