Accession Number:

ADA464926

Title:

Impact of Herbivory and Plant Competition on the Growth of Hydrilla in Small Ponds

Descriptive Note:

Corporate Author:

ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS

Report Date:

2007-02-01

Pagination or Media Count:

10.0

Abstract:

Insect herbivory and competition have been shown to negatively impact the ability of hydrilla Hydrilla verticillata L.f. Royle to grow and reproduce Doyle et al. 2002. Previous research conducted at the Lewisville Aquatic Ecosystem Research Facility LAERF, Lewisville, TX and other field sites has shown that sustained levels of herbivory by the leaf-mining flies Hydrellia pakistanae Deonier and H. balciunasi Bock can reduce hydrilla biomass by 30 percent, reduce reproduction via reduction in flowering and tuberturion production, and impact the ability of hydrilla to photosynthesize Grodowitz et al. 2003 Doyle et al. 2002 Doyle et al., in review. This technical note evaluates the impacts of insect herbivory and competition on dioecious hydrilla biomass, and tuber and turion production in small ponds.

Subject Categories:

  • Biology
  • Geology, Geochemistry and Mineralogy
  • Hydrology, Limnology and Potamology
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE