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You searched for: Author "Mark Schwarzländer" Remove constraint Author: "Mark Schwarzländer"
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1. Locomotory responses to olfactory cues during host‐finding can inform environmental safety assessments of biological weed control agents

Author:
Mark Schwarzländer,   et al.   ; Jessica M. Fung; Karuna Nepal; Basu D. Kafle; Sanford D. Eigenbrode;     Show all 5 Authors
Source:
Entomologia experimentalis et applicata 2021 v.169 no.8 pp. 758-771
ISSN:
0013-8703
Subject:
Curculionidae; Cynoglossum officinale; biological control agents; biological weed control; cages; choice feeding; insect behavior; nontarget organisms; odors; olfactometers; oviposition; safety assessment; weeds
Abstract:
... In weed biological control programs, the safety assessment of an agent currently relies on no‐choice and choice feeding, development, and oviposition cage tests. However, confined conditions restrict insect behavior, potentially producing false positive host‐use results that can prematurely disqualify agents, reducing opportunities for successful weed biocontrol. To minimize risks of nontarget att ...
DOI:
10.1111/eea.13069

2. A global review of target impact and direct nontarget effects of classical weed biological control

Author:
Mark Schwarzländer,   et al.   ; Hariet L Hinz; Rachel L Winston;     Show all 3 Authors
Source:
Current opinion in insect science 2020 v.38 pp. 48-54
ISSN:
2214-5745
Subject:
adverse effects; biological control; host specificity; invasive species; monitoring; nontarget organisms; risk; technology; weeds
Abstract:
... Recent reviews show that classical weed biocontrol measures can be successful in reducing the negative impacts of invasive plant species, have impressive returns on investment, and contribute to slower rates of weed spread. Quantitative post-release monitoring is necessary to account for differences in biocontrol outcomes across spatial and temporal scales. Direct nontarget attack (NTA) incidence ...
DOI:
10.1016/j.cois.2019.11.006

3. Specialized soil types affect host acceptability and performance of weed biocontrol candidates: implications for host specificity assessments

Author:
Mark Schwarzländer,   et al.   ; Sujan Panta; Philip Weyl; Sanford D. Eigenbrode; Bradley L. Harmon;     Show all 5 Authors
Source:
BioControl 2021 v.66 no.5 pp. 601-611
ISSN:
1386-6141
Subject:
Ceutorhynchus; Lepidium draba; Streptanthus glandulosus; biological control; herbivores; horticultural soils; horticulture; host specificity; insects; nutrient content; risk; serpentine; serpentine soils; weeds; Western United States
Abstract:
... The Eurasian gall-forming weevil Ceutorhynchus cardariae Korotyeav (Coleoptera: Curculionidae) is a biological control candidate for the invasive Eurasian Lepidium draba L. (Brassicaceae) in the western USA. Among 157 nontarget plant species that have been tested, some North American Caulanthus and Streptanthus species, confamilial with Lepidium, were found to be at potential risk of attack by C. ...
DOI:
10.1007/s10526-021-10101-x

4. A simple approach to evaluate behavioral responses of insect herbivores to olfactory and visual cues simultaneously: the double stacked y-tube device and portable volatile collection system

Author:
Mark Schwarzländer,   et al.   ; Ikju Park; Hariet L. Hinz; Urs Schaffner; Sanford D. Eigenbrode;     Show all 5 Authors
Source:
Arthropod-plant interactions 2019 v.13 no.1 pp. 139-149
ISSN:
1872-8855
Subject:
Curculionidae; Cynoglossum officinale; bioassays; host plants; host preferences; odors; phytophagous insects; North America
Abstract:
... ABSRACT: Insect herbivores use olfactory and visual cues during host plant finding. Although insect responses to these cues typically are assessed separately, in nature herbivores respond to olfactory and visual cues simultaneously. We demonstrate the functionality of a “double-stacked y-tube device” (D-SYD) to measure bioassay responses of a specialist herbivore to olfactory and visual cues of po ...
DOI:
10.1007/s11829-018-9663-4

5. Examining olfactory and visual cues governing host-specificity of a weed biological control candidate species to refine pre-release risk assessment

Author:
Mark Schwarzländer,   et al.   ; Ikju Park; Sanford D. Eigenbrode; Stephen P. Cook; Bradley L. Harmon; Hariet L. Hinz; Urs Schaffner;     Show all 7 Authors
Source:
BioControl 2018 v.63 no.3 pp. 377-389
ISSN:
1386-6141
Subject:
Curculionidae; Cynoglossum officinale; bioassays; biological control; choice feeding; electrophysiology; host plants; host specificity; inflorescences; nontarget organisms; oviposition; risk assessment; safety assessment; volatile compounds; wavelengths; weeds; North America
Abstract:
... In weed biological control programs, pre-release host-specificity testing relies traditionally on no-choice and choice feeding, oviposition, and development tests. Rarely have they included detailed examination of behavioral responses to olfactory and visual cues of biological control candidates, although a better understanding of the mechanisms underlying host recognition may explain potential di ...
DOI:
10.1007/s10526-018-9867-7
CHORUS:
10.1007/s10526-018-9867-7
Chorus Open Access:
10.1007/s10526-018-9867-7

6. Geographic population structure in an outcrossing plant invasion after centuries of cultivation and recent founding events

Author:
Mark Schwarzländer,   et al.   ; John F Gaskin; Robert D Gibson; Heather Simpson; Diane L Marshall; Esther Gerber; Hariet Hinz;     Show all 7 Authors
Source:
AoB PLANTS pp. -
ISSN:
2041-2851
Subject:
Isatis tinctoria; biological control agents; cultivars; dyes; ecological invasion; genetic variation; humans; invasive species; natural selection; outcrossing; population structure; surveys; Eastern United States; Eurasia; Germany; Switzerland; Ukraine; Western United States
Abstract:
... Population structure and genetic diversity of invasions are the result of evolutionary processes such as natural selection, drift and founding events. Some invasions are also molded by specific human activities such as selection for cultivars and intentional introduction of desired phenotypes, which can lead to low genetic diversity in the resulting invasion. We investigated the population structu ...
DOI:
10.1093/aobpla/ply020
CHORUS:
10.1093/aobpla/ply020

7. Density dependence, precipitation and biological control agent herbivory influence landscape‐scale dynamics of the invasive Eurasian plant Linaria dalmatica

Author:
Mark Schwarzländer,   et al.   ; Aaron S. Weed; Quentin Paynter;     Show all 3 Authors
Source:
Journal of applied ecology 2014 v.51 no.3 pp. 825-834
ISSN:
0021-8901
Subject:
Linaria dalmatica; Mecinus; biological control; biological control agents; demography; herbivores; intraspecific competition; invasive species; models; monitoring; natural enemies; plant communities; population growth; rain; weeds; Idaho
Abstract:
... Resource availability and natural enemies are among the most commonly cited mechanisms affecting competitive ability of invasive plants, but their simultaneous effects on plant dynamics are seldom evaluated in the field. Understanding how endogenous and exogenous factors affect invasive plant abundance is essential when evaluating the impact of classical weed biological control agents because misi ...
DOI:
10.1111/1365-2664.12226

8. Reevaluating establishment and potential hybridization of different biotypes of the biological control agent Longitarsus jacobaeae using molecular tools

Author:
Mark Schwarzländer,   et al.   ; Marianna Szűcs; John F. Gaskin;     Show all 3 Authors
Source:
Biological control 2011 v.58 no.1 pp. 44-52
ISSN:
1049-9644
Subject:
weed control; hybrids; amplified fragment length polymorphism; biological control agents; coasts; introgression; introduced species; plant-insect relations; weeds; climatic factors; biological control; Longitarsus jacobaeae; ecological succession; biotypes; Jacobaea vulgaris; California; Italy; Oregon; Switzerland; Montana
Abstract:
... Evaluation of past and current biological control programs using molecular tools can clarify establishment success of agent biotypes, and can contribute to our understanding of best practice for natural enemy importations. The flea beetle, Longitarsus jacobaeae Waterhouse (Coleoptera: Chrysomelidae) has successfully controlled the weed tansy ragwort, Jacobaea vulgaris Gaertn., in Pacific coastal a ...
Handle:
10113/50278
DOI:
10.1016/j.biocontrol.2011.03.010

9. Extreme differences in population structure and genetic diversity for three invasive congeners: knotweeds in western North America

Author:
Mark Schwarzländer,   et al.   ; John F. Gaskin; Fritzi S. Grevstad; Marijka A. Haverhals; Robert S. Bourchier; Timothy W. Miller;     Show all 6 Authors
Source:
Biological invasions 2014 v.16 no.10 pp. 2127-2136
ISSN:
1387-3547
Subject:
Reynoutria japonica; invasive species; hybrids; amplified fragment length polymorphism; asexual reproduction; genotype; genetic variation; ecological invasion; Reynoutria sachalinensis; population structure; biogeography; British Columbia; South Dakota; California
Abstract:
... Japanese, giant, and the hybrid Bohemian knotweeds (Fallopia japonica, F. sachalinensis and F. x bohemica) have invaded the western USA and Canada, as well as other regions of the world. The distribution of these species in western North America, and their mode of invasion, is relatively unresolved. Using Amplified Fragment Length Polymorphisms of 865 plants from 132 populations from British Colum ...
Handle:
10113/59555
DOI:
10.1007/s10530-014-0652-y

10. Minimal genetic diversity in the facultatively outcrossing perennial pepperweed (Lepidium latifolium) invasion

Author:
Mark Schwarzländer,   et al.   ; John F. Gaskin; Livy Williams III; Esther Gerber; Hariet L. Hinz;     Show all 5 Authors
Source:
Biological invasions 2012 v.14 no.9 pp. 1797-1807
ISSN:
1387-3547
Subject:
invasive species; amplified fragment length polymorphism; outcrossing; seeds; Lepidium latifolium; parents; herbivores; apomixis; genotype; disease resistance; genetic variation; seed productivity; selfing; rhizomes; shoots; United States; Russia; Turkey (country)
Abstract:
... Perennial pepperweed (Lepidium latifolium L.) is a Eurasian plant species that is invasive in North America. The invasion often forms large, dense monocultural stands. We investigated the genetic diversity along transects in dense populations in the western USA using Amplified Fragment Length Polymorphisms. We also analyzed transect collections from the native Eurasian range for comparison. In add ...
Handle:
10113/54553
DOI:
10.1007/s10530-012-0190-4

11. Genetic Identity and Diversity of Perennial Pepperweed (Lepidium latifolium) in Its Native and Invaded Ranges

Author:
Mark Schwarzländer,   et al.   ; John F. Gaskin; Hariet L. Hinz; Livy Williams III; Esther Gerber; Brian G. Rector; Dao Yuan Zhang;     Show all 7 Authors
Source:
Invasive plant science and management 2013 v.6 no.2 pp. 268-280
ISSN:
1939-747X
Subject:
Bayesian theory; Lepidium latifolium; amplified fragment length polymorphism; biological control; chloroplast DNA; genetic variation; haplotypes; indigenous species; invasive species; nucleotide sequences; China; Eurasia; Kazakhstan; North America; Northern Africa
Abstract:
... Perennial pepperweed is an invasive plant species in North America, native to temperate Eurasia and northern Africa. Effective biological control depends upon correct taxonomic identification. Therefore, we investigated morphological and genetic data (cpDNA sequences and amplified fragment length polymorphisms [AFLP]) in its native range, where the species is at times treated as multiple taxa (L. ...
Handle:
10113/56772
DOI:
10.1614/IPSM-D-12-00075.1

12. No difference in competitive ability between invasive North American and native European Lepidium draba populations

Author:
Mark Schwarzländer,   et al.   ; Jessica L. McKenney; Michael G. Cripps; William J. Price; Hariet L. Hinz;     Show all 5 Authors
Source:
Plant ecology 2007 v.193 no.2 pp. 293-303
ISSN:
1385-0237
Subject:
Festuca idahoensis; Festuca ovina; Lepidium draba; adverse effects; colonizing ability; evolution; genotype; herbivores; indigenous species; introduced plants; invasive species; prediction; resource allocation; Europe; United States
Abstract:
... The evolution of increased competitive ability (EICA) hypothesis states that plants introduced into a new range experience reduced herbivory, which in turn results in a shift in resource allocation from herbivore defense to growth. If genotypes of an invasive plant species from its native and introduced ranges are grown under common conditions, introduced genotypes are expected to grow more vigoro ...
DOI:
10.1007/s11258-007-9268-y

13. Inference of allelopathy is complicated by effects of activated carbon on plant growth

Author:
Mark Schwarzländer,   et al.   ; Jennifer A. Lau; Kenneth P. Puliafico; Joseph A. Kopshever; Heidi Steltzer; Edward P. Jarvis; Sharon Y. Strauss; Ruth A. Hufbauer;     Show all 8 Authors
Source:
new phytologist 2008 v.178 no.2 pp. 412-423
ISSN:
0028-646X
Subject:
activated carbon; allelopathy; biomass; culture media; neutralization; nitrogen; nitrogen content; nutrient availability; plant communities; plant growth; soil; soil nutrients
Abstract:
... • Allelopathy can play an important role in structuring plant communities, but allelopathic effects are often difficult to detect because many methods used to test for allelopathy can be confounded by experimental artifacts. The use of activated carbon, a technique for neutralizing allelopathic compounds, is now employed in tests for allelopathy; however, this technique also could produce large ex ...
DOI:
10.1111/j.1469-8137.2007.02360.x
PubMed:
18208469