PREDATION ON ADULTS OF THE FLEA BEETLE PHYLLOTRETA CRUCIFERAE BY LACEWING LARVAE (NEUROPTERA: CHRYSOPIDAE)

1980 ◽  
Vol 112 (7) ◽  
pp. 745-746 ◽  
Author(s):  
L. Burgess
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Flea Beetle ◽  
Canadian Prairie ◽  
Phyllotreta Cruciferae ◽  
Flea Beetles ◽  
Insect Predators ◽  
Sweep Net ◽  
Adult Flea ◽  
Prairie Provinces

Several instances of predation by lacewing larvae on adults of the flea beetle Phyllotreta cruciferae (Goeze) have been observed in Saskatchewan. Other reported insect predators of rapeseed-crop-infesting flea beetles in the Canadian prairie provinces are the beetle Collops vittatus Say (Gerber and Osgood 1975), and one of the big-eyed bugs, Geocoris bullatus (Say) (Burgess 1977).The first observation of an attack on an adult flea beetle by a lacewing larva was in August 1972, when some lacewing larvae, adult flea beetles, diamondback moth larvae (Plutella xylostella (L.)) and unidentified aphids and midges were swept from maturing rapeseed near Aberdeen, Saskatchewan. One of these lacewing larvae attacked an adult of P. cruczferae in a glass collecting-vial and carried the flea beetle around in its jaws. Other lacewing larvae attacked aphids, midges, and diamondback moth larvae. Further evidence for lacewing larvae feeding on adult flea beetles was obtained in August 1979, when a sizeable population of lacewing larvae in a rapeseed crop was encountered near St. Gregor, Saskatchewan. One of the larvae swept from this crop had an adult of P. cruciferae in its jaws when it was first seen in the sweep net. Later the same day, another lacewing larva, swept from a nearby rapeseed field, attacked an adult of P. cruciferae in a collecting vial. In the laboratory both lacewing larvae, still carrying their prey, were quick-frozen, preserved in 70% ethanol and later photographed.

FLEA BEETLES (COLEOPTERA: CHRYSOMELIDAE) ATTACKING RAPE CROPS IN THE CANADIAN PRAIRIE PROVINCES

1977 ◽  
Vol 109 (1) ◽  
pp. 21-32 ◽  
Author(s):  
L. Burgess
Keyword(s):  
Flea Beetle ◽  
Late Summer ◽  
Egg Laying ◽  
Canadian Prairie ◽  
Phyllotreta Cruciferae ◽  
Phyllotreta Striolata ◽  
Flea Beetles ◽  
New Generation ◽  
Adult Flea ◽  
Prairie Provinces

AbstractAdults of five species of flea beetles were found attacking rape crops (Brassica napusL. andBrassica campestrisL.) in the Canadian prairie provinces from 1971 to 1974.Phyllotreta cruciferae(Goeze) was the most abundant and serious pest, followed in order byPsylliodes punctulataMelsh. andPhyllotreta striolata(F.) (=vittata(F.)), whilePhyllotreta albionica(Lec.) andPhyllotreta robustaLec. were present only occasionally. The fourPhyllotretaspecies confined their feeding largely to cruciferous plants, butPsyl.punctulatahad a broader host range. All of the five species overwintered as adults, usually in leaf litter or turf beneath hedges, poplar groves, or fencerows, or sometimes in the soil in fields, and all became active with the arrival of warm sunny weather in the spring, withPsyl.punctulatausually being the first to appear. All appeared to have but one generation per year, with mating and egg laying occurring in the spring, the larvae inhabiting the soil and feeding on host-plant roots, and the new generation of adults emerging from pupae in the soil in late July and in August. The overwintered adults usually died in late June or early July, so there was a period in July when adult flea beetles were scarce. The most serious damage to rape crops by flea beetles was caused by overwintered adults attacking seedling crops in the spring; movement of these beetles into crops took the form of a creeping infestation moving from plant to plant into the field from nearby volunteer rape of cruciferous weed feeding grounds, or a more rapid and even infestation of a whole field with flight probably being the major method of movement. Flea beetles fed most actively when the weather was sunny, warm, and dry; cool damp weather reduced the intensity of attack and aided plant growth. Shade, such as exists in a healthy stand of rape beyond the pre-bloom stage, also inhibited attack. Occasionally, late-maturing rape crops were damaged in late summer by new generation adult flea beetles, particularlyP.cruciferae, feeding on the green epidermis of the stems, leaves, and pods.A field key for separating the five flea beetle species attacking rape crops in the Canadian prairie provinces is given.

Will low-glucosinolate cultivars of the mustards Brassica juncea and Sinapis alba be vulnerable to insect pests?

1997 ◽  
Vol 77 (2) ◽  
pp. 283-287 ◽  
Author(s):  
Robert P. Bodnaryk
Keyword(s):  
Brassica Juncea ◽  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Flea Beetle ◽  
Sinapis Alba ◽  
Mamestra Configurata ◽  
Phyllotreta Cruciferae ◽  
Pest Status ◽  
Flea Beetles ◽  
Bertha Armyworm

Foliar concentrations of the predominant glucosinolates in the mustards B. juncea (allyl glucosinolate, sinigrin) and S. alba (p-hydroxybenzyl glucosinolate, sinalbin) were determined in lines that had been selected in breeding programs for low levels of glucosinolates in their seeds for the oilseed market. The glucosinolate concentrations found in the cotyledons and leaves of the selected lines were also low, often by three or more orders of magnitude, compared with the unselected parent. The flea beetle, Phyllotreta cruciferae Goeze, and the diamondback moth, Plutella xylostella (L.), (both crucifer specialists) fed at equal rates on B. juncea and its low-glucosinolate lines, indicating that these species are insensitive to sinigrin and suggesting that their pest status on low-glucosinolate lines of B. juncea will likely remain unchanged. By contrast, the bertha armyworm, Mamestra configurata Wlk. (a generalist) fed up to fivefold more on the leaves of low-glucosinolate lines, suggesting that its pest status on low-glucosinolate B. juncea is likely to worsen relative to the mustard B. juncea. Flea beetles, diamondback moth, and the bertha armyworm fed at equal rates on the mustard S. alba and a low-glucosinolate line indicating that the status of these pests on low-glucosinolate S. alba will unlikely be much different from the mustard S. alba.Lines of S. alba differing in their sinalbin concentration by 1000-fold had equal levels of antixenosis resistance in their cotyledons against flea beetles, leaving little doubt that this resistance is independent of glucosinolates. Flea beetle resistance was also detected in the cotyledons of a low-glucosinolate line of B. juncea. The resistance was not detected in the parental line or in another low-glucosinolate line and appears to have arisen fortuitously during crossing and selection. Since resistance occurs in a line with concentrations of sinigrin three or more orders of magnitude lower than non-resistant lines, this resistance is also unlikely to be glucosinolate based. The mustards S. alba and B. juncea are a useful source of cotyledon resistance against flea beetles that is compatible with the aims of oilseed breeding. Key words: Glucosinolate, Brassica juncea, Sinapis alba, Phyllotreta cruciferae, Plutella xylostella, Mamestra configurata, resistance, mustard, canola, insect

PREDATION ON ADULTS OF THE FLEA BEETLE PHYLLOTRETA CRUCIFERAE BY THE WESTERN DAMSEL BUG, NABIS ALTERNATUS (HEMIPTERA: NABIDAE)

1982 ◽  
Vol 114 (8) ◽  
pp. 763-764 ◽  
Author(s):  
L. Burgess
Keyword(s):  
Flea Beetle ◽  
Insect Vectors ◽  
Green Lacewing ◽  
Southeastern Part ◽  
Canadian Prairie ◽  
Phyllotreta Cruciferae ◽  
Flea Beetles ◽  
Chrysopa Carnea ◽  
Insect Predation ◽  
Prairie Provinces

During a 1981 study on possible insect vectors of a yeast in Saskatchewan mustard crops, several incidental observations of attack by the western damsel bug, Nabis alternatus Parshley, on adults of the flea beetle Phyllotreta cruciferae (Goeze) were made near Oxbow in the southeastern part of the province. This is the fourth record of insect predation on crucifer-feeding flea beetles in the Canadian prairie provinces. Previous records involved the beetle Collops vittatus Say (Gerber and Osgood 1975), a big-eyed bug, Geocoris bullatus (Say) (Burgess 1977), and larvae of the green lacewing, Chrysopa carnea Stephens (Burgess 1980).

EFFECT OF POST-TREATMENT TEMPERATURE ON THE CONTACT TOXICITY OF CYPERMETHRIN SPRAY TO ADULTS OF THE FLEA BEETLE, PHYLLOTRETA CRUCIFERAE (GOEZE)

1986 ◽  
Vol 118 (1) ◽  
pp. 79-80
Author(s):  
L. Burgess ◽  
C.F. Hinks
Keyword(s):  
Flea Beetle ◽  
Treatment Temperature ◽  
Synthetic Pyrethroid ◽  
Post Treatment ◽  
Contact Toxicity ◽  
Pest Species ◽  
Phyllotreta Cruciferae ◽  
Flea Beetles ◽  
Major Pest ◽  
Adult Flea

In 1982, the synthetic pyrethroid, cypermethrin, was among the insecticides recommended as a spray for control of adult flea beetles attacking canola crops in Saskatchewan (Saskatchewan Agriculture 1982). Growers reported some problems with its effectiveness at the recommended rates of 14–20 g AI/ha, however, and the recommendation for its use against flea beetles was subsequently discontinued. Laboratory spray trials were begun in 1982 to determine if post-treatment temperature affected the contact toxicity of cypermethrin to adults of the major pest species, Phyllotreta cruciferae (Goeze), and if the dosage that had been recommended was adequate as a contact spray.

PREDATION ON ADULT PHYLLOTRETA FLEA BEETLES BY PODISUS MACULIVENTRIS (HEMIPTERA: PENTATOMIDAE) AND NABICULA AMERICOLIMBATA (HEMIPTERA: NABIDAE)

1986 ◽  
Vol 118 (7) ◽  
pp. 731-732 ◽  
Author(s):  
Thomas W. Culliney
Keyword(s):  
New York ◽  
New York State ◽  
First Record ◽  
Arthropod Community ◽  
Podisus Maculiventris ◽  
Phyllotreta Cruciferae ◽  
Flea Beetles ◽  
Central New York ◽  
Insect Predators ◽  
Adult Flea

On three occasions in late August 1985, during the course of a study of the arthropod community associated with collards (Brassica oleracea var. acephala) (Cruciferae) in central New York State, two species of predaceous Heteroptera, the spined soldier bug, Podisus maculiventris (Say), and Nabicula americolimbata (Carayon), were observed feeding on adult flea beetles of the genus Phyllotreta. Evidence for predation on adult flea beetles is rare. Tahvanainen and Root (1972) and Kareiva (1985) reported practically no predation on adult Phyllotreta cruciferae (Goeze) in central New York, but scattered observations in Canada have documented occasional attacks on adult crucifer-infesting flea beetles by various insect predators (Gerber and Osgood 1975; Burgess 1977, 1980, 1982). This is the first record of predation on adult flea beetles by P. muculiventris and N. americolimbata. Burgess (1982) noted predation on adult P. cruciferae by another nabid, Nabis alternatus Parshley.

ANTIBIOSIS OF PREFERRED AND NON-PREFERRED HOST-PLANTS FOR THE FLEA BEETLE, PHYLLOTRETA CRUCIFERAE (GOEZE) (COLEOPTERA: CHRYSOMELIDAE)

1997 ◽  
Vol 129 (1) ◽  
pp. 43-49 ◽  
Author(s):  
P. Palaniswamy ◽  
R.J. Lamb ◽  
R.P. Bodnaryk
Keyword(s):  
Host Plants ◽  
Flea Beetle ◽  
Dry Weight ◽  
Sinapis Alba ◽  
Early Spring ◽  
Phyllotreta Cruciferae ◽  
Thlaspi Arvense ◽  
Flea Beetles ◽  
Adult Flea ◽  
Promising Type

AbstractThe antibiosis of crucifers to flea beetles, Phyllotreta cruciferae (Goeze), was compared for Brassica juncea L., B. napus L., and B. rapa L. with low antixenosis, B. carinata L. and Sinapis alba L. with moderate antixenosis, and Thlaspi arvense L. with high antixenosis. Adult flea beetles collected from the field in early spring fed actively on intact or excised leaves of all plants except T. arvense. The beetles survived, and gained weight and fat on the Brassica species and S. alba, but not on intact foliage of T. arvense. No antibiosis was detected in any of the Brassica species or in S. alba. Intact foliage of T. arvense was so antixenotic that beetles probably starved rather than suffered from antibiosis. A low level of antibiosis was detected in excised foliage of T. arvense where the antixenosis was lost. These experiments show that estimates of beetle survival, dry weight, and fat content can be used in the laboratory to test small numbers of candidate plants for antibiosis. However, the level of antibiosis appears to vary less among Brassica species and related plants than does the level of antixenosis, and so the latter is a more promising type of resistance for use against flea beetles in canola.

CHANGES IN RELATIVE ABUNDANCE OF THE FLEA BEETLES PHYLLOTRETA STRIOLATA AND PHYLLOTRETA CRUCIFERAE (COLEOPTERA: CHRYSOMELIDAE) IN SASKATCHEWAN PARKLAND WITH INCREASING DISTANCE FROM THE BOREAL FOREST

1984 ◽  
Vol 116 (4) ◽  
pp. 653-656 ◽  
Author(s):  
L. Burgess
Keyword(s):  
Boreal Forest ◽  
Relative Abundance ◽  
Allyl Isothiocyanate ◽  
Phyllotreta Cruciferae ◽  
Phyllotreta Striolata ◽  
Flea Beetles ◽  
Baited Traps ◽  
Sweep Net

AbstractMean catches of Phyllotreta striolata (F.) in allyl isothiocyanate baited traps decreased southwards from the boreal forest and northern parkland to the central parkland of Saskatchewan, while the opposite was true for Phyllotreta cruciferae (Goeze). Similar trends in the relative numbers of the two species were evident in sweep net catches in canola crops.

A SELECTION OF OILSEED RAPE, BRASSICA RAPA L., WITH RESISTANCE TO FLEA BEETLES, PHYLLOTRETA CRUCIFERAE (GOEZE) (COLEOPTERA: CHRYSOMELIDAE)

1993 ◽  
Vol 125 (4) ◽  
pp. 703-713 ◽  
Author(s):  
R.J. Lamb ◽  
P. Palaniswamy ◽  
K.A. Pivnick ◽  
M.A.H. Smith
Keyword(s):  
Brassica Rapa ◽  
Flea Beetle ◽  
Phyllotreta Cruciferae ◽  
Flea Beetles ◽  
Cotyledon Stage ◽  
Small Seed ◽  
Incomplete Resistance ◽  
Beetle Damage ◽  
Field Plots ◽  
Selection Of

AbstractFive cycles of single-plant and progeny-row selection in lines derived from Brassica rapa L. "Tobin" were used to identify plants with incomplete resistance to flea beetles, Phyllotreta cruciferae (Goeze). This line, called C8711, had higher survival, grew larger, and yielded more seed than Tobin when the two lines were compared in field plots at Glenlea, Manitoba, unprotected by insecticide. C8711 without insecticide yielded more seed than Tobin treated with a lindane seed dressing, but less than Tobin treated with carbofuran granules. With carbofuran, which prevents most flea beetle damage, the yield of C8711 was 35% higher than for Tobin. At Saskatoon, Saskatchewan, the differences between C8711 and Tobin were not statistically significant, although the trends were similar to those at Glenlea. C8711 was late maturing, produced small seed, and was not of canola quality. The resistance in C8711 is attributed to a low level of antixenosis, rapid growth at the cotyledon stage, and tolerance to damage during the first 3–4 weeks of growth.

OBSERVATIONS ON DISTRIBUTION, SEASONAL LIFE HISTORY, AND ABUNDANCE OF FLEA BEETLES (COLEOPTERA: CHRYSOMELIDAE) THAT INFEST RAPE CROPS IN MANITOBA

1979 ◽  
Vol 111 (12) ◽  
pp. 1345-1353 ◽  
Author(s):  
H. G. Wylie
Keyword(s):  
Life History ◽  
Brassica Napus ◽  
Relative Abundance ◽  
Flea Beetle ◽  
Phyllotreta Cruciferae ◽  
Main Species ◽  
Phyllotreta Striolata ◽  
Flea Beetles ◽  
History Of

AbstractPhyllotreta cruciferae (Goeze) was usually the most abundant flea beetle on crops of Argentine rape, Brassica napus L., in Manitoba, followed in order by Phyllotreta striolata (F.) and Psylliodes punctulata Melsh. These three species and small numbers of Phyllotreta bipustulata (F.) were present on volunteer rape in the spring. A few specimens of a fifth rape-eating species, Phyllotreta robusta Lee, were trapped in April after hibernating. The three main species were recorded in all 16 localities in which samples of flea beetles on rape crops and/or volunteer rape were collected. Details of seasonal life history of each species are presented, as well as data on the abundance of the three main species throughout the year on rape crops, in overwintering habitats and on volunteer rape in spring. The relative abundance of P. cruciferae, P. striolata, and Ps. punctulata in different rape-growing areas of Manitoba is discussed.

Bioassay for assessing resistance of Arabidopsis thaliana L. (Heynh.) to the adult crucifer flea beetle, Phyllotreta cruciferae (Goeze) (Coleoptera: Chrysomelidae)

2005 ◽  
Vol 85 (1) ◽  
pp. 225-235 ◽  
Author(s):  
Rebecca H. Hallett ◽  
Heather Ray ◽  
Jennifer Holowachuk ◽  
Juliana J. Soroka ◽  
Margaret Y. Gruber
Keyword(s):  
Arabidopsis Thaliana ◽  
Rating Scale ◽  
Regulatory Gene ◽  
Flea Beetle ◽  
Geographic Origin ◽  
Latin Square ◽  
Leaf Tissue ◽  
Phyllotreta Cruciferae ◽  
Flea Beetles ◽  
Crucifer Flea Beetle

A bioassay arena and a laboratory screening protocol were developed for assessing lines of Arabidopsis thaliana L. (Heynh.) for feeding damage by the adult crucifer flea beetle, Phyllotreta cruciferae (Goeze). The arena consists of a 96-well microtitre plate with a modified top to contain flea beetles and allow ventilation. Eight lines of A. thaliana, arranged in an 8 × 8 Latin square design, were screened simultaneously in each arena using 50 starved flea beetles. Two cotyledons and the first pair of true leaves per plant were rated visually under a dissecting microscope using a visual damage rating scale. The protocol was used to screen 29 wild ecotypes, eight mutant lines and a single transgenic line of A. thaliana. Discrimination between both cotyledon and leaf tissue was apparent for young beetles that were both non-reproductive or reproductive, but not for old reproductive beetles. Differences were observed between Asian and European ecotypes of A. thaliana, suggesting that geographic origin may play a role in susceptibility of Arabidopsis ecotypes to flea beetle feeding. The transparent testa regulatory gene mutants (lines 82, 111, 164) were most susceptible to flea beetle feeding, possibly indicating a role for anthocyanins and/or flavonoids in governing flea beetle susceptibility. Significant variation in damage levels indicates that expression of flea beetle resistance in the A rabidopsis genome is plastic, and that potential exists to use the wide array of publicly available Arabidopsis germplasm as tools in the transfer of resistance to agronomically important host plants. Key words: Seedling bioassay, Arabidopsis thaliana, wild ecotypes and mutants, crucifer flea beetle, Phyllotreta cruciferae, host plant resistance

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