Geographic variation in age, growth and size structure of Percilia irwini from south-central Chile
Abstract:Percilia irwini from the Andalién and Biobío River basins of south-central Chile exhibited a mean age of 1·4 years with a maximum age of 4 years. Size at age differed among river zones and males were 10% larger than females at all ages. Compared to other locations, populations of P. irwini inhabiting areas subject to industrial and domestic effluents exhibited smaller size structure.
Document Type: Research Article
Affiliations: 1: Department of Biology, Brigham Young University, 401 WIDB, Provo, UT 84602, U.S.A. 2: Aquatic Unit System, Environmental Science Centre Eula-Chile, University of Concepción, Concepción, Chile
Publication date: 2009-01-01