title: 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.
authors.affiliation: Department of Biology, Brigham Young University, 401 WIDB, Provo, UT 84602, USA. jraedo@gmail.com
authors.forename: J R
authors.initials: JR
authors.lastname: Aedo
authors.forename: M C
authors.initials: MC
authors.lastname: Belk
authors.forename: E M
authors.initials: EM
authors.lastname: Habit
mesh_terms: D000375:Aging; D000818:Animals; D049628:Body Size; D002677:Chile; D003247:Conservation of Natural Resources; D005260:Female; D005843:Geography; D008297:Male; D010473:Perciformes / Q000254:growth & development* / Q000502:physiology; D011157:Population Dynamics; D045483:Rivers; D014874:Water Pollutants, Chemical
chemical_list: D014874:Water Pollutants, Chemical