National Invasive Species Information Center (NISIC): gateway to invasive species information; covering Federal, State, local, and international sources.

Longer Marketing Time Increases the Risk of Naturalization by Horticultural Plants (Feb 24, 2009)
USDA. Agricultural Research Service.
The longer non-native plants are sold commercially, the greater the chance they will become naturalized and potentially invasive, according to a new ARS study.

Invasive Species: Part of the Price of Doing Business (Feb 13, 2009)
Arizona State University.
Global trade come with significant local costs, according to Charles Perrings, professor of environmental economics at ASU. Perrings, whose four-volume Ecological Economics has just been published, refers to one estimate that the annual economic damage due to invasive species is equal to 53 percent of agricultural GDP in the United States, 31 percent in the United Kingdom and 48 percent in Australia, but 96 percent, 78 percent and 112 percent of agricultural GDP in South Africa, India and Brazil, respectively.

ARS Scientists Sequence Citrus Disease Bacterium (Feb 12, 2009)
USDA. Agricultural Research Service.
Researchers have a new tool to combat citrus Huanglongbing (HLB), a disease threatening the nation's $2.2 billion citrus industry. ARS scientists have sequenced the genome of the bacterium Candidatus Liberibacter asiaticus, which causes HLB.

Citrus Greening: What ARS Is Doing
USDA. Agricultural Research Service.

Species Profile -- Mexican Fruit Fly
USDA. NAL. National Invasive Species Information Center.
The Mexican fruit fly, is a very serious pest of various fruits, particularly citrus and mango, in Mexico and Central America. The Mexican fruit fly represents a particular threat to Florida because of its special affinity for grapefruit, of which Florida is one of the world's leading producers.

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