You are here

Keyword: biological control

An herbivore-induced plant volatile from saltcedar (Tamarix spp.) is repellent to Diorhabda carinulata (Coleoptera: Chrysomelidae)

Publications Posted on: August 31, 2020
The leaf beetle Diorhabda carinulata Desbrochers (Coleoptera: Chrysomelidae) was introduced into the United States in 1999 for classical biological control of the exotic woody invader saltcedar (Tamarix spp. L. [Caryophyllales: Tamaricaceae]). The recent southern expansion of the range of D.

The scent of success: Beetle 'smells' can help protect the environment from weeds

Science Spotlights Posted on: August 31, 2020
Saltcedar (Tamarix spp.), an aggressively invasive Eurasian tree, is a dominant and widespread woody riparian species in the southwestern U.S. Biocontrol of saltcedar with the leaf beetle Diorhabda carinulata can be made more effective with semiochemicals (smells). 

Establishing Diorhabda carinulata: Impact of release disturbances on pheromone emission and influence of pheromone lures on establishment

Publications Posted on: June 20, 2020
Before weed biocontrol insects are transported and released in a new area, they are commonly collected into small paper containers, chilled, and kept under dark conditions. This process can be termed a pre-release protocol.

The life history of Dasypyga alternosquamella Ragonot (Pyralidae) feeding on the Southwestern dwarf mistletoe (Arceuthobium vaginatum) in Colorado

Publications Posted on: December 23, 2019
The immature stages, feeding and oviposition behaviors, patterns of larval abundance, and associated arthropod fauna of Dasypyga alternosquarnella Ragonot (Pyralidae) on Arceuthobiurn vaginatum susp. cryptopodum (Hawks.), the Southwestern dwarf mistletoe, are described and illustrated. The study was conducted at the Manitou Experimental Forest, U.S.D.A.

Field demonstration of a semiochemical treatment that enhances Diorhabda carinulata biological control of Tamarix spp.

Publications Posted on: September 13, 2019
The northern tamarisk beetle Diorhabda carinulata (Desbrochers) was approved for release in the United States for classical biological control of a complex of invasive saltcedar species and their hybrids (Tamarix spp.). An aggregation pheromone used by D. carinulata to locate conspecifics is fundamental to colonization and reproductive success.

‘Chem herding’ to improve biological control of saltcedar (Tamarix spp.) in the Northern Rockies

Science Spotlights Posted on: August 08, 2019
Saltcedar (Tamarix spp.) refers to the complex of exotic invasive shrubs and trees (four species and their hybrids) now considered the third most prevalent woody riparian taxonomic group in the western United States. Defoliation by large multivoltine populations of the Northern tamarisk beetle Diorhabda carinulata has successfully reduced extensive saltcedar infestations in the southwestern United States. Behavioral manipulation of insects with semiochemicals such as aggregation pheromones can be used to intensify herbivory, even in the Northern Rockies where beetle population densities are inherently low, to the extent that the target weed species is negatively affected at a population level.

Twenty-five years after: Post-introduction association of Mecinus janthinus s.l. with invasive host toadflaxes Linaria vulgaris and Linaria dalmatica in North America

Publications Posted on: July 10, 2018
Linaria vulgaris, common or yellow toadflax, and Linaria dalmatica, Dalmatian toadflax (Plantaginaceae), are Eurasian perennial forbs invasive throughout temperate North America. These Linaria species have been the targets of classical biological control programmes in Canada and the USA since the 1960s.

Semiochemicals to enhance herbivory by Diorhabda carinulata aggregations in saltcedar (Tamarix spp.) infestations

Publications Posted on: April 12, 2018
BACKGROUND: Semiochemicals formonitoring, attracting or repelling pest and beneficial organisms are increasingly deployed in agricultural and forest systems for pest management. However, the use of aggregation pheromones and host-plant attractants for the express purpose of increasing the efficacy of classical biological control agents of weeds has not been widely reported.

The tortoise and the hare: Can the slow native plant win?

Science Spotlights Posted on: May 03, 2017
It has been suggested that exotic plants will be more successful than native plant species as a result of climate change. This is because exotics often exhibit stronger responses to disturbance, faster growth rates, and greater plasticity. In this study, we show that climate change can actually shift the balance in favor of natives when it creates conditions that favor the slower more "tortoise-like" strategies of some natives.

The tortoise and the hare: Reducing resource availability shifts competitive balance between plant species

Publications Posted on: April 14, 2017
Determining how changes in abiotic conditions influence community interactions is a fundamental challenge in ecology. Meeting this challenge is increasingly imperative in the Anthropocene where climate change and exotic species introductions alter abiotic context and biotic composition to reshuffle natural systems.