Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/310
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: The role of invertebrates in the diet, growth and survival of red grouse (Lagopus lagopus scoticus) chicks
Authors: Park, Kirsty
Robertson, Peter A
Campbell, Steven T
Foster, Robin
Russell, Zoe M
Newborn, David
Hudson, Peter J
Keywords: red grouse
survival
chick
invertebrate
diet
Issue Date: Jun-2001
Publisher: Blackwell Publishing
Citation: Park K, Robertson PA, Campbell ST, Foster R, Russell ZM, Newborn D & Hudson PJ (2001) The role of invertebrates in the diet, growth and survival of red grouse (Lagopus lagopus scoticus) chicks, Journal of Zoology, 254 (2), pp. 137-145.
Abstract: The role of diet on the growth, survival and movement of red grouse chicks was examined. We compared two areas of moorland in Scotland; a dry heath with a low density of red grouse and poor chick survival and a wetter heath/bog with relatively higher red grouse numbers and higher rates of chick survival. There were no differences in clutch size, or the proportion of eggs hatching between the two moors but brood survival was significantly lower on the dry heath. Radiotagged hens with broods were monitored during the first 12 days following hatching, the chicks captured, weighed and faecal samples collected. Invertebrate samples were collected within brood feeding ranges. Analysis of chick faeces was used to identify dietary components. Heather comprised the major dietary component on both moors. Invertebrates formed a higher component of diet on the wet moor, and this was positively correlated with growth rates, which in turn were positively correlated with chick survival. We present data from an experiment carried out in 1982, in which chicks showed higher growth rates with increasing insect availability. We also show that broods in which all the chicks survived (4-10 days) had smaller home range areas than broods in which some of the chicks died during this period. We suggest that the differences in chick survival between the two populations was due to variations in the abundance of invertebrates, particularly Tipulids. The protein provided by a high invertebrate component in the diet is, therefore, an important determinant of young red grouse chick growth and survival in some areas.
Type: Journal Article
URI: http://hdl.handle.net/1893/310
DOI Link: http://dx.doi.org/10.1017/S0952836901000644
Rights: The definitive version is available at www.blackwell-synergy.com
Affiliation: Biological and Environmental Sciences
Game Conservancy Trust
Game Conservancy Trust
Game Conservancy Trust
University of Stirling
Game Conservancy Trust
University of Stirling

Files in This Item:
File Description SizeFormat 
park2001c.pdf88.46 kBAdobe PDFView/Open


This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.