Translator Disclaimer
1 December 2012 Cost Effectiveness of Egg Oiling Versus Culling for Reducing Fish Consumption by Double-crested Cormorants in Lac La Biche, Alberta
Author Affiliations +
Abstract

Increasing populations of Double-crested Cormorants (Phalacrocorax auritus) throughout North America have had a significant impact on fish resources in areas where they breed. A simple Excel model was used to assess the effectiveness of lethal control methods in reducing fish consumed by a breeding population of cormorants. Egg oiling was found to reduce seasonal fish consumption by an average of 504 ± 75 (SD) metric tonnes (N = 3) while culling reduced consumption by 280 ± 205 (SD) tons (N = 3). Cost-effectiveness of each method was also assessed using values from a control program in Lac La Biche, Alberta, Canada. Egg oiling cost an average of CDN$5.26 ± 0.84 (SD; N = 3) for each ton of fish saved from consumption by cormorants and culling cost $36.14 ± 8.90 (SD; N = 3). While culling alone is capable of controlling consumption by adult and young-of-the-year cormorants, egg oiling provides a practical and cost-effective alternative for management of ground-nesting cormorants when used in combination or when culling is not available as a management option.

Andrea M. McGregor and Chris L. Davis "Cost Effectiveness of Egg Oiling Versus Culling for Reducing Fish Consumption by Double-crested Cormorants in Lac La Biche, Alberta," Waterbirds 35(sp1), 66-76, (1 December 2012). https://doi.org/10.1675/063.035.sp108
Received: 13 September 2007; Accepted: 2 February 2009; Published: 1 December 2012
JOURNAL ARTICLE
11 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top