Host-plant susceptibility to the carrot fly, Psila rosae. 2. Suitability of various host species for larval development

1999 ◽  
Vol 134 (1) ◽  
pp. 13-26 ◽  
Author(s):  
THOMAS DEGEN ◽  
ERICH STÄDLER ◽  
P R ELLIS
Keyword(s):  
Larval Development ◽  
Host Plant ◽  
Host Species ◽  
Psila Rosae ◽  
Carrot Fly ◽  
Plant Susceptibility

Identification of host plant attractants for the carrot fly,Psila rosae

1983 ◽  
Vol 9 (7) ◽  
pp. 843-861 ◽  
Author(s):  
P. M. Guerin ◽  
E. St�dler ◽  
H. R. Buser
Keyword(s):  
Host Plant ◽  
Psila Rosae ◽  
Carrot Fly

Bagworm Survival and Feeding Preferences as Indicators of Resistance among Maples

2002 ◽  
Vol 20 (3) ◽  
pp. 138-142
Author(s):  
William E. Klingeman
Keyword(s):  
Host Plant ◽  
Ornamental Plants ◽  
Larval Feeding ◽  
Eastern United States ◽  
Feeding Preferences ◽  
Survival And Development ◽  
Early Instar ◽  
Moderate Resistance ◽  
Hybrid Cross ◽  
Plant Susceptibility

Abstract The bagworm (Thyridopteryx ephemeraeformis (Haworth)) is a polyphagous, native pest of numerous deciduous and evergreen ornamental plants. Bagworm larvae were used to investigate host plant susceptibility among ten species and cultivars of maples that are economically important and commonly encountered in landscapes in the eastern United States. Data analyses from 48-hour choice assays, conducted in the laboratory during 2000 and 2001, indicated that differences existed among maples for bagworm feeding preferences and host plant susceptibility. Results from the 48-hour trials were not as accurate as seasonal no-choice assays, however. No-choice assays during both seasons quantified resistance among maples that limited larval bagworm survival and development. Measurements of larval feeding injury demonstrated resistance in paperbark maple (Acer griseum (Franch.) Pax) and trident maple (A. buergerianum Miq.) when compared with other maples. Laboratory results were corroborated during 2001 by a no-choice field assay, in which early instar bagworm larvae performed well on the majority of maples. In contrast, paperbark maple and trident maple were resistant to bagworm feeding, while ‘Autumn Blaze’ Freeman maple (A. x freemanii E. Murray), a hybrid cross obtained by breeding A. rubrum with A. saccharinum, showed moderate resistance.

Psila rosae. [Distribution map].

1992 ◽  
Author(s):  
Keyword(s):  
New York ◽  
New Hampshire ◽  
Prince Edward Island ◽  
Amur Region ◽  
Distribution Map ◽  
Psila Rosae ◽  
Carrot Fly ◽  
Former Ussr ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Psila rosae (Fabricius). Diptera: Psilidae (carrot fly, carrot rust fly). Attacks carrot, parsnip, celery. Information is given on the geographical distribution in Europe, Austria, Belgium, Czechoslovakia, Denmark, Finland, France, Germany, Hungary, Ireland, Italy, Netherlands, Norway, Poland, Spain, Sweden, Switzerland, Turkey, United Kingdom, CIS (former USSR), European CIS, Georgia, Latvia, Leningrad area, Russia, Amur region, Khabarovsk, Primorsk, Sakhalin, Ukraine, Asia, Mongolia, Australasia, New Zealand, North America, Canada, Alberta, British Columbia, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Island, Quebec, USA, California, Connecticut, Maine, Massachusetts, Michigan, New Hampshire, New York, Ohio, Oregon, Pennsylvania, Washington.

Influence of Host Plant Species and Fertilization Regime on Larval Performance and Feeding Preference of the Redbacked Cutworm and the Pale Western Cutworm (Lepidoptera: Noctuidae)

2019 ◽  
Vol 113 (2) ◽  
pp. 731-741
Author(s):  
Ronald E Batallas ◽  
Maya L Evenden
Keyword(s):  
Larval Development ◽  
Host Plant ◽  
Spring Wheat ◽  
Feeding Preference ◽  
Growth Potential ◽  
Economic Damage ◽  
Larval Performance ◽  
Crop Species ◽  
Wheat Seedlings ◽  
Redbacked Cutworm

Abstract The redbacked cutworm, Euxoa ochrogaster (Guenée), and the pale western cutworm, Agrotis orthogonia (Morrison), are generalist pests that cause sporadic economic damage to several annual crops in the Canadian Prairies. Early larval instars feed on foliage, whereas mature larvae eat into the stem and sever crop seedlings. Here, we evaluate the influence of annual crop species and host fertilization on the larval performance and feeding preference of both cutworm species. Performance is the ability of an insect to reach its maximum growth potential. The first set of experiments evaluated larval development and preference on canola (Brassica napus L. [Capparales: Brassicaeae]), field peas (Pisum sativa L. [Fabales: Fabaceae]), and spring wheat (Triticum aestivum L. [Cyperales: Poaceae]). The redbacked cutworm had higher performance on canola and peas, while the pale western cutworm had higher performance on wheat. In multiple-choice feeding experiments, the redbacked cutworm consumed more canola, whereas the pale western cutworm consumed more spring wheat. The third set of experiments evaluated larval development on fertilized and unfertilized seedlings of canola and spring wheat seedlings. When fed unfertilized seedlings, the redbacked cutworm had better performance on canola than spring wheat, whereas pale western cutworm had better performance on spring wheat than canola. Fertilizer application enhanced the performance of both cutworms regardless of the crop species. Despite their generalist feeding behavior, both cutworm species have a larval feeding preference for the host plant on which they achieve high performance. Canola-cereal cropping is a common crop rotation schedule in the region; however, this tactic will not negatively impact cutworm performance.

The soft scale (Coccidae) associates of Malaysian ant-plants

1998 ◽  
Vol 14 (4) ◽  
pp. 427-443 ◽  
Author(s):  
Hans-Peter Heckroth ◽  
Brigitte Fiala ◽  
Penny J. Gullan ◽  
Azarae HJ. Idris ◽  
Ulrich Maschwitz
Keyword(s):  
Host Plant ◽  
Host Species ◽  
Peninsular Malaysia ◽  
Scale Insects ◽  
Soft Scale ◽  
Genus Level ◽  
The Family ◽  
Single Host ◽  
Taxonomic Research ◽  
Host Plant Specificity

Myrmecophytic species of the Paleotropical plant genus Macaranga (Euphorbiaceae) have hollow stems that are almost always occupied by ants of the genus Crematogaster and scale insects of the family Coccidae (Hemiptera: Coccoidea). The coccids have a cryptic endophytic lifestyle and are confined to this microhabitat. They are much more diverse than previously recognised. First data are presented on the diversity, prevalence, specificity and distribution of the coccids associated with myrmecophytic Macaranga species. Twenty-two species of Coccidae in total, including 15 previously unknown from Macaranga, were discovered from 19 species of Macaranga in Peninsular Malaysia and Borneo. The original describers tentatively assigned the known coccid species to Coccus (Coccinae) but the Macaranga coccids still require taxonomic research to establish their correct placing. The coccids varied in their host-plant specificity from species that occurred in most of the sampled Macaranga to one species that was found almost exclusively only on a single host species. In addition to their occurrence on Macaranga, only three species, C. macarangae and C. secretus and morphospecies C. 214 were found on rare occasions in the stem interior of a few other myrmecophytes and in a non-myrmecophytic liana, but did not regularly colonise these plants. Most of the coccids can be regarded as highly specific at the plant genus level.

The sensory receptors of the carrot fly larva, Psila rosae (F.) (Dipt., Psilidae)

1973 ◽  
Vol 62 (4) ◽  
pp. 545-548 ◽  
Author(s):  
M. F. Ryan ◽  
M. Behan
Keyword(s):  
Root Hairs ◽  
Sensory Receptors ◽  
Campaniform Sensilla ◽  
Psila Rosae ◽  
Basiconic Sensilla ◽  
Carrot Fly ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes ◽  
Scanning Electron

Examination of the cephalic lobes of larvae of Psila rosae (F.) by means of light and scanning electron microscopes revealed the presence of 24 sensilla, ten campaniform, eight basiconic, four ampullaceous and two styloconic. By comparison with the known functions of similar sensilla in other insects, it is suggested that the ampullaceous and basiconic sensilla respond to plant emanations in soil, air and water, respectively, and that styloconic sensilla determine the palatability of the root hairs; the role of the campaniform sensilla is obscure.

Diapause and overwintering of the carrot fly, Psila rosae (F.) (Diptera: Psilidae)

1981 ◽  
Vol 71 (4) ◽  
pp. 583-590 ◽  
Author(s):  
A. J. Burn ◽  
T. H. Coaker
Keyword(s):  
Adult Emergence ◽  
Early Spring ◽  
Pupal Weight ◽  
Prepupal Stage ◽  
Psila Rosae ◽  
Carrot Fly ◽  
Soil Temperatures ◽  
Similar Temperature ◽  
Effects Of Temperature ◽  
Diapause Development

AbstractPsila rosae (F.) overwinters in Britain in both the larval and pupal stages. Overwintering pupae formed in October and November at soil temperatures of between 10 and 16°C entered diapause. A period of similar temperature in the laboratory during the prepupal stage also caused pupae to enter diapause. Overwintering larvae continued to feed and gain weight; they pupated in early spring at soil temperatures of 2–8°C but did not enter diapause. The sensitivity to diapause-inducing conditions decreased between November and March, associated with changes in developmental temperatures and pupal weight. The differential effects of temperature on larval, pupal and diapause development together serve to synchronise adult emergence from the overwintering population. The mechanisms which allow overwintering by a variable proportion of larvae and pupae also provide the opportunity for the development of a third generation of adult flies in October and November.

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