Investigation of Two Insect Species for Control of Eurasian Watermilfoil PDF Download
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Author: Gary R. Buckingham Publisher: ISBN: Category : Aquatic insects Languages : en Pages : 88
Book Description
This report presents the results of the evaluation of two species of insects for the biological control of Eurasian watermilfoil (Myriophyllum spicatum L.). One of the species is a native weevil, Litodactylus leucogaster (Marsh.), which attacks the flower spikes, and the other is an accidentally introduced European moth, Acentria nivea (Oliver), whose larvae feed on the leaves and stems. The biology of L. leucogaster was studied in detail and host-specificity tests were conducted with adults and larvae. Since it was determined to be specific to watermilfoils, it was released at Crystal River, Florida, on 22 August 1979. Two adults were captured at Crystal River in November indicating possible establishment. The pyralid moth, A. nivea, was difficult to rear in the laboratory. Since the females were active only one night, successful matings were rare in the small colony. Larval production was best in containers that were minimally disturbed. the larvae required water temperatures below 22 C for development though they could survive short periods at higher temperatures. The larvae were not specific to milfoil; however, A. nivea may still be of interest as a member of a complex of species which attack milfoil. (Author).
Author: Gary R. Buckingham Publisher: ISBN: Category : Aquatic insects Languages : en Pages : 88
Book Description
This report presents the results of the evaluation of two species of insects for the biological control of Eurasian watermilfoil (Myriophyllum spicatum L.). One of the species is a native weevil, Litodactylus leucogaster (Marsh.), which attacks the flower spikes, and the other is an accidentally introduced European moth, Acentria nivea (Oliver), whose larvae feed on the leaves and stems. The biology of L. leucogaster was studied in detail and host-specificity tests were conducted with adults and larvae. Since it was determined to be specific to watermilfoils, it was released at Crystal River, Florida, on 22 August 1979. Two adults were captured at Crystal River in November indicating possible establishment. The pyralid moth, A. nivea, was difficult to rear in the laboratory. Since the females were active only one night, successful matings were rare in the small colony. Larval production was best in containers that were minimally disturbed. the larvae required water temperatures below 22 C for development though they could survive short periods at higher temperatures. The larvae were not specific to milfoil; however, A. nivea may still be of interest as a member of a complex of species which attack milfoil. (Author).
Author: Aquatic Plant Control Research Program (U.S. Army Engineer Waterways Experiment Station). Meeting Publisher: ISBN: Category : Allelopathy Languages : en Pages : 288
Author: Aquatic Plant Control Research Program (U.S. Army Engineer Waterways Experiment Station). Meeting Publisher: ISBN: Category : Aquatic ecology Languages : en Pages : 302
Author: Gary R. Buckingham
Author: Gary R. Buckingham
Author: Aquatic Plant Control Research Program (U.S. Army Engineer Waterways Experiment Station). Meeting
Author: United States. Army. Corps of Engineers
Author: 
Author: Aquatic Plant Control Research Program (U.S. Army Engineer Waterways Experiment Station). Meeting
Author: United States. Army. Corps of Engineers
Author: United States. Army. Corps of Engineers. Civil Works Directorate
Author: United States. Army. Corps of Engineers
Author: 
Author: