2007 23 zebra mussel detected in great lakes in 1986 o

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Inten8onal introduc8on   Currently o  Popula8ons established over most of North America o  Displaces na8ve species, especially cavity nesters o  No efforts at control 1890 introduction Current distribution 21 Gypsy moth   E8enne Leopold Trouvelot in 1869 o  Brought gypsy moth from Europe to Massachusejs to build a bejer silkmoth o  Accidental introduc8on   Currently o  Popula8ons established over much of eastern North America •  Significant defolia8on of oak forests •  Eradica8on abandoned; “Slow the Spread” o  Frequent introduc8ons to western North America •  Rigorous eradica8on programs •  Insec8cide applica8ons – Vancouver, Victoria 22 Gypsy moth   Flightless females   Generalist   Spread o  Human transport From Liebhold et al. 2007 23 Zebra mussel   Detected in Great Lakes in 1986 o  Na8ve to Caspian Sea (Russia) o  Ship’s ballast o  Accidental introduc8on   Currently o  Popula8ons established over much of eastern North America o  Outcompetes and suffocates many na8ve species o  Blocks water intakes for municipal supplies and hydroelectri...
View Full Document

This document was uploaded on 03/27/2014 for the course CONS 101 at University of British Columbia.

Ask a homework question - tutors are online