Natural Enemies of the Rangeland Weed Whitebrush (Aloysia gratissima: Verbenaceae) in South-America: Potential for Biological Control in the United States

1995 ◽  
Vol 5 (2) ◽  
pp. 218-230 ◽  
Author(s):  
H.A. Cordo ◽  
C.J. Deloach
Keyword(s):  
United States ◽  
Biological Control ◽  
South America ◽  
Natural Enemies ◽  
The United States

scholarly journals Fire Ants (Solenopsisspp.) and Their Natural Enemies in Southern South America

2012 ◽  
Vol 2012 ◽  
pp. 1-19 ◽  
Author(s):  
Juan Briano ◽  
Luis Calcaterra ◽  
Laura Varone
Keyword(s):  
United States ◽  
Biological Control ◽  
South America ◽  
Natural Enemies ◽  
The United States ◽  
Fire Ants ◽  
Fire Ant ◽  
Biological Information ◽  
Southern South America ◽  
Field Release

We review the fire ant research conducted by the ARS-South American Biological Control Laboratory (SABCL) since 1987 to find a complex of natural enemies in southern South America and evaluate their specificity and suitability for field release as self-sustaining biological control agents. We also include those studies conducted by the ARS-Center for Medical, Agriculture, and Veterinary Entomology in the United States with the SABCL collaboration. Ecological and biological information is reported on local fire ants and their microsporidia, nematodes, viruses, phorid flies, eucharitid wasps, strepsiptera, and parasitic ants. Their biology, abundance, distribution, detrimental effect, field persistence, specificity, and phenology are discussed. We conclude that the objectives of the ARS program in South America are being achieved and that the pioneering studies have served to encourage further investigations in the United States and other countries and advanced the implementation of biological control programs to decrease imported fire ant densities and damage. Still, several promising organisms should be further investigated for eventual field release in the near future.

scholarly journals Brazilian Red-Eyed Fly Ormia depleta (Wiedemann) (Diptera: Tachinidae)

EDIS ◽  
2018 ◽  
Vol 2018 (4) ◽  
Author(s):  
Haleigh Ray ◽  
Jennifer Lynn Gillett-Kaufman
Keyword(s):  
United States ◽  
Biological Control ◽  
Life Cycle ◽  
South America ◽  
Pest Management ◽  
The United States ◽  
Mole Crickets ◽  
Southern Florida ◽  
Almost All ◽  
Ormia Depleta

The Brazilian red-eyed fly, Ormia depleta, is a tachinid fly that is a parasitoid of mole crickets in the genus Neoscapteriscus (Orthoptera: Gryllotalpidae). Originally from South America, it was brought to the United States for biological control of pest mole crickets. It is now established in almost all counties in central and southern Florida. Includes: Introduction - Distribution - Description - Life Cycle - Pest Management - Selected References. Available on EDIS at https://edis.ifas.ufl.edu/in1219 First published at http://entnemdept.ufl.edu/creatures/BENEFICIAL/FLIES/Ormia_depleta.html

Present Status of Projects on the Biological Control of Weeds by Insects and Plant Pathogens in the United States and Canada

Weed Science ◽  
1974 ◽  
Vol 22 (5) ◽  
pp. 490-495 ◽  
Author(s):  
R. D. Goeden ◽  
L. A. Andres ◽  
T. E. Freeman ◽  
P. Harris ◽  
R. L. Pienkowski ◽  
...  
Keyword(s):  
United States ◽  
Biological Control ◽  
Natural Enemies ◽  
Plant Pathogens ◽  
The United States ◽  
Current Status ◽  
Federal State ◽  
Phytophagous Insects ◽  
Weed Species ◽  
Biological Control Of Weeds

Weed species or genera previously and currently targeted for biological control with phytophagous insects or phytopathogens in the United States (including Hawaii) and Canada are listed. The current status of and natural enemies involved in national, federal, state, and university biological control projects are reported.

Assessing the role of generalist predators in the biological control of alfalfa weevil (Coleoptera: Curculionidae)

2017 ◽  
Vol 149 (4) ◽  
pp. 525-533 ◽  
Author(s):  
Tatyana A. Rand
Keyword(s):  
United States ◽  
Biological Control ◽  
Experimental Work ◽  
United States Of America ◽  
Acyrthosiphon Pisum ◽  
The United States ◽  
Generalist Predators ◽  
Alfalfa Weevil ◽  
Exclusion Experiment ◽  
Predator Exclusion

AbstractAlfalfa weevil (Coleoptera:Curculionidae) is a major pest of alfalfa throughout the United States of America. Biological control research has disproportionately focussed on introduced parasitoids. Generalist predators may also be important, but experimental work evaluating their impacts is lacking. I combined a cross-site survey with a predator exclusion experiment to identify key predators, and test for impacts on weevil survival and plant defoliation levels in Montana and North Dakota, United States of America. Spiders (Araneae) dominated the complex, followed by Nabidae (Hemiptera) and Coccinellidae (Coleoptera). None of the dominant predators showed aggregative responses to weevil (Hypera postica (Gyllenhal); Coleoptera: Curculionidae) or pea aphid (Acyrthosiphon pisum (Harris); Hemiptera: Aphididae) densities across 10 sites surveyed. However, weevil densities were positively correlated with both coccinellid and nabid densities across transects at the experimental site. Thus, predator groups traditionally associated with aphids can show strong aggregative numerical responses to alfalfa weevil larvae at smaller scales. Predator exclusion revealed no significant predator effects on larval survival or alfalfa damage. However, final densities of pea aphids were significantly higher in exclusion treatments relative to controls. The results suggest that even under conditions where predators exert significant pressure on aphids, they may still have minimal impacts on weevils. Additional experimental work is necessary to determine the broader potential of generalist predators as alfalfa weevil control agents.

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