Impact of Insect Herbivory on the Establishment of Hydrilla verticillata (L.f.) Royle Fragments

Hydrilla (Hydrilla verticillata [L.f.] Royle) is an invasive, nonindigenous aquatic plant first discovered in the United States in the late 1960s (Blackburn et al. 1969). Current distribution includes the northern states of Maine and Washington, the Gulf and Atlantic coastal states, California, Tenn...

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Bibliographic Details
Published in:Journal of aquatic plant management 2008-07, Vol.46, p.199-201
Main Authors: Owens, C S, Grodowitz, MJ, Smart, R M
Format: Article
Language:English
Subjects:
Hydrilla verticillata
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Summary:Hydrilla (Hydrilla verticillata [L.f.] Royle) is an invasive, nonindigenous aquatic plant first discovered in the United States in the late 1960s (Blackburn et al. 1969). Current distribution includes the northern states of Maine and Washington, the Gulf and Atlantic coastal states, California, Tennessee, and recently Arkansas (USGS 2007), Oklahoma (Smart pers. comm.), Indiana (Lembi 2006) and Wisconsin (Netherland 2007). Once hydrilla invades an aquatic system, the plant can rapidly spread locally through rhizome expansion or over longer distances through generation of fragments (Sculthorpe 1985, McFarland and Barko 1996) and/or turions. For example, in the San Marcos River, Texas, Owens et al. (2001) found that healthy, undamaged hydrilla fragments generated by recreational usage, harvesting, and environmental factors eventually led to creation of new colonies downriver (some several miles) as fragments settled.
ISSN:0146-6623