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.

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.

EFFECTS OF COLLECTION METHOD ON ESTIMATES OF PARASITISM AND SEX RATIO OF FLEA BEETLES (COLEOPTERA: CHRYSOMELIDAE) THAT INFEST RAPE CROPS IN MANITOBA

1981 ◽  
Vol 113 (8) ◽  
pp. 665-671 ◽  
Author(s):  
H. G. Wylie
Keyword(s):  
Sex Ratio ◽  
Allyl Isothiocyanate ◽  
Reproductive Period ◽  
Lower Percentage ◽  
Collection Method ◽  
Phyllotreta Cruciferae ◽  
Similar Difference ◽  
Phyllotreta Striolata ◽  
Flea Beetles

AbstractSimilar percentages of parasitized adults and of females of Phyllotreta cruciferae (Goeze) were collected in traps baited with allyl isothiocyanate and in a D-Vac vacuum insect net early in spring and in August–September, when non-reproducing adults predominated. In contrast, a lower percentage of parasitized adults and a higher percentage of females were collected in the traps than in the D-Vac during the beetles’ reproductive period, May–July. A similar difference between the traps and D-Vac was recorded for Phyllotreta striolata (F.) during April–May, when this species begins to reproduce. Therefore, the results indicate that traps used in this study are unsuitable for measuring parasitism and sex ratio of reproducing P. cruciferae and P. striolata.

POSTERIOR DISPERSAL OF EGGS AND LARVAE OF MICROCTONUS VITTATAE (HYMENOPTERA: BRACONIDAE) IN CRUCIFER-INFESTING FLEA BEETLES (COLEOPTERA: CHRYSOMELIDAE)

1985 ◽  
Vol 117 (5) ◽  
pp. 541-545 ◽  
Author(s):  
H.G. Wylie
Keyword(s):  
Larval Dispersal ◽  
Phyllotreta Cruciferae ◽  
Body Segments ◽  
Phyllotreta Striolata ◽  
Body Regions ◽  
Flea Beetles ◽  
First Instar ◽  
Eggs And Larvae

AbstractMicroctonus vittatae Mues. oviposit in the hemolymph of flea beetles, Phyllotreta striolata (F.) and Phyllotreta cruciferae (Goeze), by inserting the ovipositor into the host's mouth and occasionally, membranous areas between body segments. Some of the eggs are transported in the hemolymph posteriorly from the head to the thorax or abdomen, and some laid in the thorax are carried into the abdomen, but eggs hatch in all 3 body regions of the hosts. First-instar larvae that eclose in the head and thorax disperse into the abdomen where they develop. Egg and larval dispersal into the abdomen increase the probability that the parasite has adequate space for development.

ASSESSING THE SUSCEPTIBILITY OF CRUCIFER SEEDLINGS TO FLEA BEETLE (Phyllotreta spp.) DAMAGE

1988 ◽  
Vol 68 (1) ◽  
pp. 85-93 ◽  
Author(s):  
R. J. LAMB
Keyword(s):  
Field Study ◽  
Block Design ◽  
Flea Beetle ◽  
Pest Resistance ◽  
Phyllotreta Cruciferae ◽  
Phyllotreta Striolata ◽  
Flea Beetles ◽  
Randomized Complete Block Design ◽  
Beetle Damage

A 5-yr field study to develop a method for assessing the susceptibility of crucifer seedlings to damage by the flea beetles Phyllotreta cruciferae (Goeze) and Phyllotreta striolata (F.) is described. The recommended method consisted of five replicate 5-m rows per cultivar in a randomized complete-block design. Each test was sown three times at weekly intervals, to assure that at least one test received an appropriate level of flea beetle damage. Each test was assessed 4–5 wk after seeding by counting the number of surviving seedlings in each row and by weighing the dried aboveground portion of 10 randomly selected seedlings, although the latter discriminated fewer lines. The damage caused by flea beetles varied spatially, but this source of variation was minor and did not compromise the tests. This method proved adequate for discriminating among crucifer species and agronomically similar cultivars, some of which showed consistent, significant differences in their responses to flea beettle damage.Key words: Crucifer, rapeseed, flea beetle, pest resistance

Species Spectrum of Flea Beetles (Phyllotreta spp., Coleoptera, Chrysomelidae) Attracted to Allyl Isothiocyanate-Baited Traps

2007 ◽  
Vol 62 (9-10) ◽  
pp. 772-778 ◽  
Author(s):  
Miklós Tóth ◽  
Éva Csonka ◽  
Flórián Bakcsa ◽  
Pál Benedek ◽  
István Szarukán ◽  
...  
Keyword(s):  
Flea Beetle ◽  
Field Tests ◽  
Allyl Isothiocyanate ◽  
Abundant Species ◽  
Point Of View ◽  
Agricultural Pests ◽  
Phyllotreta Cruciferae ◽  
Baited Traps ◽  
Field Attraction ◽  
Great Portion

In field tests in Hungary, Slovenia and Bulgaria, in allyl isothiocyanate-baited traps significantly more beetles of Phyllotreta cruciferae, Ph. vittula, Ph. undulata, Ph. nigripes, Ph. nodicornis, Ph. balcanica, Ph. atra, Ph. procera, Ph. ochripes, Ph. diademata and Psylliodes chrysocephalus (Coleoptera, Chrysomelidae, Halticinae) were captured than in unbaited control traps. With the exception of Ph. cruciferae, this is the first report on significant field attraction by allyl isothiocyanate for these species. The species spectrum captured included six important agricultural pests. At all sites a great portion of the catch (ranging from ca 30 to 98%) was Ph. cruciferae, irrespective of the plant culture. The second most abundant species present at most sites was Ph. vittula. The present results are very promising from the point of view of applicability of allyl isothiocyanate in Europe as a bait in cabbage flea beetle traps for detection and monitoring.

scholarly journals Allyl isothiocyanate baited traps to monitor cabbage flea beetles (Phyllotretra spp., Coleoptera: Chrysomelidae)

2005 ◽  
Vol 11 (1) ◽  
Author(s):  
P. Benedek ◽  
F. Bakcsa ◽  
M. Tóth ◽  
E. Csonka
Keyword(s):  
Field Experiments ◽  
Flea Beetle ◽  
Allyl Isothiocyanate ◽  
Trap Design ◽  
Local Composition ◽  
Flea Beetles ◽  
Specific Composition ◽  
Baited Traps ◽  
Field Samples ◽  
Funnel Trap

A new trapping concept has been proposed based on a volatile compound, allyl isothyocianate, known to be attractant to some of these insects for a long time. (l) The first question was whether this compound is effectively attractive to all flea beetle species attacking cabbage under our conditions? Field experiments were made at different localities with non-sticky baited traps early and late spring. Eleven Phyllotreta species attacking cabbages were captured at baited traps most of them were first observed at this bait. So the bait has proved to be sufficient for use for trapping purposes effectively. Based on these findings a second question arose whether the captured samples reflected the specific composition of natural flea beetle populations at trapping localities? To reply the question field samples were taken at four different kinds of cabbage crops and at a fallow ground in the close vicinity by a manual sampler device suitable to detect the local composition of flea beetles and trapping was made parallel with baited and unbaited traps from early spring to early autumn. No significant differences were found between the specific structures of Phyllotreta assemblages sampled with the different methods applied. This means baited traps reflected the specific composition of local Phyllotreta populations fairly well. Thirdly, the most effective trap design was searched for. Some sticky and non-sticky trap designs which had been developed to capture other insects were compared. The tested sticky and funnel trap designs baited with allyl isothiocyanate captured large numbers of flea beetles attacking cabbages. Results showed that non-sticky funnel traps were more effective than sticky delta traps. Accordingly, non-sticky funnel trap designs can advantageously be used and could possibly be recommended in plant protection practice to monitor flea beetles attacking cabbages as their catching capacity is considerably greater than that of the delta type and additionally captured beetles are much cleaner, more intact and consequently their identification is much easier.

OVIPOSITION AND SURVIVAL OF THE EUROPEAN PARASITE MICROCTONUS BICOLOR (HYMENOPTERA: BRACONIDAE) IN CRUCIFER-INFESTING FLEA BEETLES (COLEOPTERA: CHRYSOMELIDAE) IN MANITOBA

1983 ◽  
Vol 115 (1) ◽  
pp. 55-58 ◽  
Author(s):  
H. G. Wylie
Keyword(s):  
Release Site ◽  
Population Densities ◽  
Phyllotreta Cruciferae ◽  
Phyllotreta Striolata ◽  
Flea Beetles ◽  
Economic Control ◽  
Prairie Provinces

AbstractFemales of a European parasite, Microctonus bicolor Wesm. tested with adults of crucifer-infesting flea beetles from Manitoba, oviposited readily in Phyllotreta striolata (F.) and occasionally in Phyllotreta cruciferae (Goeze), but not in Psylliodes punctulata Melsh. Immature parasites developed and emerged from both P. striolata and P. cruciferae. M. bicolor is unlikely to provide economic control of P. cruciferae, which is the most important of the rapeseed-infesting flea beetles in the southern part of the prairie provinces. Further releases of M. bicolor should be in more northerly rapeseed-growing areas where there are higher population densities of P. striolata than at the original release site in southern Manitoba.

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.

OVIPOSITION AND SURVIVAL OF THREE NEARCTIC EUPHORINE BRACONIDS IN CRUCIFER-INFESTING FLEA BEETLES (COLEOPTERA: CHRYSOMELIDAE)

1984 ◽  
Vol 116 (1) ◽  
pp. 1-4 ◽  
Author(s):  
H. G. Wylie
Keyword(s):  
Phyllotreta Cruciferae ◽  
Phyllotreta Striolata ◽  
Flea Beetles

AbstractFemales of Microctonus vittatae Mues., Microctonus punctulatae Loan and Wylie, and Townesilitus psylliodis Loan oviposited and survived in only some of the species of crucifer-infesting flea beetles that they encounter on rapeseed. M. vittatae oviposited readily in Phyllotreta striolata (F.), less often in Phyllotreta cruciferae (Goeze) and Phyllotreta pusilla Horn, and rarely in Psylliodes punctulata Melsh.; the progeny matured in P. striolata, P. cruciferae, and P. pusilla. M. punctulatae oviposited readily in P. punctulata and P. pusilla, occasionally in P. striolata, but never in P. cruciferae; the progeny matured only in P. punctulata and P. pusilla. Females of T. psylliodis oviposited readily in P. punctulata, rarely in P. pusilla and P. striolata, but never in P. cruciferae; parasite progeny matured only in P. punctulata.

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.

Sign in / Sign up

Export Citation Format

Share Document