Host Utilization of Native Cirsium Thistles (Asteraceae) by the Introduced Weevil Rhinocyllus conicus (Coleoptera: Curculionidae) in California

Turner, Charles E.; Pemberton, Robert W.; Rosenthal, S. S.

doi:10.1093/ee/16.1.111

Cited by 69 publications

(49 citation statements)

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“…Fourth, in spite of this evidence of preference for and better performance on C. nutans, R. conicus now uses about a third of the species of native North American Cirsium thistles examined (Goeden and Ricker, 1986a, 1986b, 1987a, 1987bTurner et al, 1987;Palmisano and Fox, 1995;Herr, 2000), and frequency of use appears to be increasing in preserves and national parks of the Great Plains and Rocky Mountains (Louda et al, 1997Louda, 1998. Furthermore, where experimental and long-term data on thistle-insect interactions were available, the evidence also suggested that the increase in R. conicus has had significant direct and indirect ecological consequences (Louda et al, 1997Louda, 1998Louda and Arnett, 2000).…”

Section: Rhinocyllus Conicusmentioning

confidence: 99%

Re-test of Rhinocyllus conicus host specificity, and the prediction of ecological risk in biological control

Arnett

Louda

2002

Biological Conservation

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Section: Rhinocyllus Conicusmentioning

confidence: 99%

Re-test of Rhinocyllus conicus host specificity, and the prediction of ecological risk in biological control

Arnett

Louda

2002

Biological Conservation

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“…However, preference and relative use vary among thistle species. Reductions in seed production by R. conicus are greater for some species than others (Zwölfer and Harris, 1984;Turner et al, 1987;Louda et al, 1997Louda et al, , 1998Louda, 1998Louda, , 1999bHerr, 2000, Louda andArnett, 2000;Gassmann and Louda, 2001). The weevil is severely reducing seed production in half of the native thistle species studied intensively in natural areas and national parks in the Great Plains and Rocky Mountains (Louda et al, 1997(Louda et al, , 1998(Louda et al, , 1999a.…”

Section: Introductionmentioning

confidence: 99%

“…In the specific case of the Eurasian biological control weevil (Rhinocyllus conicus Frölich), introduced for exotic thistle control, about one-third of the native North American thistle species are now reported as host plants (Goeden and Ricker, 1986a, 1986b, 1987a, 1987bTurner et al, 1987;Louda et al, 1997Louda et al, , 1998. Populations of some species are being severely impacted (Louda et al, 1997(Louda et al, , 1998Louda, 1999a;Louda and Arnett, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…such as musk thistle (Carduus nutans), uses the flower heads of more than 33% of the 90 + native North American thistles (Cirsium spp.) examined thus far (Goeden and Ricker, 1986a, 1986b, 1987a, 1987bTurner et al, 1987;Palmisano and Fox, 1997;Louda et al, 1997Louda et al, , 1998Louda, 1998Louda, , 1999bHerr, 2000). However, preference and relative use vary among thistle species.…”

Section: Introductionmentioning

confidence: 99%

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Chemistry of Cirsium and Carduus: a role in ecological risk assessment for biological control of weeds?

Jordon‐Thaden

Louda

2003

Biochemical Systematics and Ecology

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Prediction of host plant range and ecological impact of exotic phytophagous insects, such as insects for classical biological control of weeds, represents a major challenge. Recently, the flowerhead weevil (Rhinocyllus conicus Fröl.), introduced from Europe into North America to control exotic thistles (Carduus spp.), has become invasive. It feeds heavily on some, but not all species of native North American thistles (Cirsium spp.). We hypothesized that such non-target use among native plants could be better predicted by knowledge of characteristic chemical profiles of secondary compounds to supplement the results of host specificity testing. To evaluate this hypothesis, we reviewed the literature on the chemistry of Cirsium and Carduus thistles. We asked what compounds are known to be present, what is known about their biological activity, and whether such information on chemical profiles would have better predicted realized host range and ecological effects of R. conicus in North America. We found an extensive, but incomplete literature on the chemistry of true thistles. Two main patterns emerged. First, consistent chemical similarities and interesting differences occur among species of thistles. Second, variation occurs in biologically active groups of characteristic compounds, specifically flavonoids, sterols, alkaloids and phenolic acids, that are known to influence host plant acceptance, selection, and feeding by phytophagous insects. Surprisingly, sesquiterpene lactones, which are characteristic in closely related Asteraceae, have not been extensively reported for Cirsium or Carduus. The minimal evidence on sesquiterpene lactones may reflect extraction methods vs. true absence. In summary, our review suggests further research on thistle chemistry in insect feeding is warranted. Also, since the exotic Canada thistle (Cirsium arvense) is an invasive thistle of current concern in North America, such research on mechanisms underlying host range expansion by exotic insects would be useful.

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“…The decision to monitor plant species that had been identiWed as potential but not probable non-target hosts (Rees, 1977;Turner et al, 1987) was key to accurately characterizing R. concicus' realized or Weld host range (van Klinken, 2000). Increased monitoring, especially of potential but improbable non-target hosts (as indicated through prerelease host-selectivity testing), would accurately delineate the Weld host range of the current suite of toadXax biocontrol agents.…”

Section: Discussionmentioning

confidence: 99%

A retrospective analysis of known and potential risks associated with exotic toadflax-feeding insects

Sing¹,

Peterson²,

Weaver³

et al. 2005

Biological Control

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Hansen, Richard W.; and Markin, George P., "A retrospective analysis of known and potential risks associated with exotic toadflax-feeding insects" (2005 AbstractTo date, eight exotic toadXax-feeding insect species have been accidentally or intentionally introduced to North America. Reports on their establishment and impact have been recorded for more than 60 years. Environmental risks linked to biological control of toadXax were identiWed in terms of host resources and undesirable impacts on the target species through the critical review of this record. Data gaps revealed during this retrospective analysis are addressed through suggestions for future research and associated experimental methodologies. Known and potential impacts of toadXax-feeding insects on both invasive toadXax and non-target species are examined. Recent programmatic demands for demonstrated agent eYcacy and stringent host selectivity during the prerelease screening process clearly illustrate that classical biological control of invasive toadXax in North America is progressing beyond the so-called lottery approach. 

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Host Utilization of Native Cirsium Thistles (Asteraceae) by the Introduced Weevil Rhinocyllus conicus (Coleoptera: Curculionidae) in California

Cited by 69 publications

References 0 publications

Re-test of Rhinocyllus conicus host specificity, and the prediction of ecological risk in biological control

Re-test of Rhinocyllus conicus host specificity, and the prediction of ecological risk in biological control

Chemistry of Cirsium and Carduus: a role in ecological risk assessment for biological control of weeds?

A retrospective analysis of known and potential risks associated with exotic toadflax-feeding insects

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