Effects of bait age on the number, sex, and age composition of Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae) in Western Australian blowfly traps

1994 ◽  
Vol 34 (5) ◽  
pp. 595 ◽  
Author(s):  
WG Vogt ◽  
TL Woodburn
Keyword(s):  
Exposure Time ◽  
Reproductive Age ◽  
Lucilia Cuprina ◽  
Age Composition ◽  
Coefficients Of Variation ◽  
Australian Sheep ◽  
Males And Females ◽  
Gravid Females ◽  
Trap Catches ◽  
Western Australian

Daily catches of the Australian sheep blowfly, Lucilia cuprina, in Western Australian blowfly traps were not significantly affected by exposing the baits in traps for up to 3 days in the field before trapping. Exposure of the baits for longer periods significantly increased the daily catch totals of both sexes. Baits with a mean exposure time before trapping of 7 days (old baits) returned significantly higher catches than baits with a zero exposure time (fresh baits): 5-fold and 3-fold increases, respectively, for males and females. Exposure of baits for only 1 day was sufficient to produce significant changes in the reproductive age composition of female catches; proportions of newly emerged females increased and proportions of gravid females decreased. Coefficients of variation for old bait/new bait catch ratios were small, 16.4% for males and 12.3% for females, which confirmed that both baits exhibited consistent levels of attractiveness on different trapping dates. Procedures are suggested for estimating population densities of L. cuprina based on trap catches using fresh and old baits.

scholarly journals Genetic Analysis of Field Trials of Sex-linked Translocation Strains for Genetic Control of the Australian Sheep Blowfly Lucilia cuprina (Wiedemann)

1985 ◽  
Vol 38 (3) ◽  
pp. 275 ◽  
Author(s):  
GG Foster ◽  
WG Vogt ◽  
TL Woodburn
Keyword(s):  
Genetic Analysis ◽  
Genetic Control ◽  
Poor Performance ◽  
Field Trials ◽  
Lucilia Cuprina ◽  
Native Population ◽  
Australian Sheep ◽  
Males And Females ◽  
Progeny Tests ◽  
Release Method

The results of progeny tests of males and females captured during two field trials of sex-linked translocation strains for genetic control of L. cuprina are presented. Males released as mature larvae survived to adulthood and mated with field females. However, the levels of genetic death introduced into the population were insufficient to suppress the native population. This was due partly to seasonal ineffectiveness of the release method, and partly to poor performance of the released males. On average, the mating competitiveness of the released males was only one-third that of field males, whereas their field-reared, translocation-bearing sons were fully competitive with native males.

The influence of weather and time of day on trap catches of males and females of Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae)

1985 ◽  
Vol 75 (2) ◽  
pp. 315-320 ◽  
Author(s):  
W. G. Vogt ◽  
T. L. Woodburn ◽  
R. Morton ◽  
B. A. Ellem
Keyword(s):  
Early Morning ◽  
Time Of Day ◽  
Lucilia Cuprina ◽  
Male And Female ◽  
Late Afternoon ◽  
Four Seasons ◽  
Baited Traps ◽  
Males And Females ◽  
Catch Rates ◽  
Trap Catches

AbstractDifferences in responses of males and females of Lucilia cuprina (Wiedemann) to carrion-baited traps were examined in Australia in relation to time of day, temperature, wind speed, relative humidity and solar radiation. The differences were small compared with responses obtained for the combined sexes (total catch), but the results were inconsistent over the four seasons of trapping. The seasons with most data (1975–1976 and 1981–1982) gave reasonably consistent results. Seasonal differences, although significant, were small enough to neglect for the purpose of standardizing trap catches. Time-of-day effects were also unimportant, except that males tended to be less active than females during the early morning (dawn-0900 h) and more active than females during the late afternoon (1500 h-dusk). Separate models are presented for standardization of male and female catch rates; the estimates differ from those obtained from total catches, but the differences are small compared to the observed day-to-day variation in catch rates.

Orientation by gravid Australian sheep blowflies, Lucilia cuprina (Diptera: Calliphoridae), to fleece and synthetic chemical attractants in laboratory bioassays

1995 ◽  
Vol 85 (4) ◽  
pp. 473-477 ◽  
Author(s):  
C.H. Eisemann
Keyword(s):  
Water Vapour ◽  
Hydrogen Sulphide ◽  
Lucilia Cuprina ◽  
Sodium Sulphide ◽  
Aqueous Sodium ◽  
Chemical Attractants ◽  
Australian Sheep ◽  
Gravid Females ◽  
Saturated Aqueous Sodium ◽  
Laboratory Bioassays

AbstractGravid females of Lucilia cuprina (Wiedeman) in a laboratory cage orientated positively to samples of fleece. Newly-wetted fleece was significantly more attractive than dry fleece, an effect resulting from the action of water on the fleece and not just addition of water vapour to the volatile fleece kairomones. Fleece contaminated with serous exudate, resulting from myiasis by L. cuprina, was much more attractive than wet, uncontaminated fleece from the same sheep. Kairomones from wetted fleece consistently augmented the attractive effects of 2-mercaptoethanol and indole in separate experiments, and of hydrogen sulphide (released from saturated aqueous sodium sulphide solution) in one trial out of three, but not overall. It is suggested that volatile fleece kairomones play a part in eliciting orientation to sheep by gravid L. cuprina. Fleece kairomones may augment the efficacy of kairomones released by putrefactive conditions in the fleece, which are known to predispose sheep to fly strike. They may also provide an input which helps to retain L. cuprina populations in the sheep’s peridomestic precinct.

THE INCORPORATION OF LABORATORY-REARED GENETIC MATERIAL INTO A FIELD POPULATION OF THE AUSTRALIAN SHEEP BLOWFLY, LUCILIA CUPRINA (DIPTERA: CALLIPHORIDAE)

1973 ◽  
Vol 105 (6) ◽  
pp. 893-901 ◽  
Author(s):  
M. J. Whitten ◽  
G. G. Foster ◽  
R. L. Kitching
Keyword(s):  
Genetic Material ◽  
Field Population ◽  
Field Conditions ◽  
Lucilia Cuprina ◽  
Marker Genes ◽  
Mating Competitiveness ◽  
Australian Sheep ◽  
Fluorescent Dust ◽  
Males And Females

AbstractCompetitiveness of laboratory-reared Lucilia cuprina (Wied.) has been examined under field conditions. The separate release of males and females each marked genetically and with fluorescent dust permitted estimates of dispersal, survival and mating competitiveness for both sexes. The ability of males to seek mates and introduce marker genes into a field population did not appear to be impaired as a result of several years of laboratory colonization. Released females were readily inseminated though suitable conditions did not exist for adequate assessment of their ability to produce offspring.

Calibration of trap catches and net catches for estimating population densities of the bush fly Musca vetustissima (Diptera: Muscidae)

1992 ◽  
Vol 82 (4) ◽  
pp. 539-546 ◽  
Author(s):  
W.G. Vogt
Keyword(s):  
Sampling Methods ◽  
Population Densities ◽  
Male And Female ◽  
Coefficients Of Variation ◽  
Males And Females ◽  
Trap Catches

AbstractPopulation densities of male and female Musca vetustissima Walker were estimated from recapture rates of marked flies in baited fly traps. Marked flies of laboratory and field origin were equally trappable. Trap catches of field flies were also compared with net catches for which the human collector was the source of attraction, and relationships are presented for estimating population densities based on both sampling methods. Estimates of fly density from trap and net catches at fixed locations have similar precision, coefficients of variation being approximately 55% for both males and females of M. vetustissima. Comparison of estimated fly densities (flies/ha) and annoyance indices, estimated numbers of flies approaching a collector each minute at 29.5°C, in ‘good’ and ‘bad’ fly years suggests that M. vetustissima is a potential nuisance whenever population densities exceed 1000 flies/ha.

Composition of Chemical Attractants Affects Trap Catches of the Australian Sheep Blowfly, Lucilia cuprina, and Other Blowflies

2004 ◽  
Vol 30 (4) ◽  
pp. 851-866 ◽  
Author(s):  
Rudolf Urech ◽  
Peter E. Green ◽  
Martin J. Rice ◽  
Geoffrey W. Brown ◽  
Frank Duncalfe ◽  
...  
Keyword(s):  
Lucilia Cuprina ◽  
Chemical Attractants ◽  
Australian Sheep ◽  
Trap Catches

Upwind flight by gravid australian sheep blowflies, Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae), in response to stimuli from sheep

1988 ◽  
Vol 78 (2) ◽  
pp. 273-279 ◽  
Author(s):  
C. H. Eisemann
Keyword(s):  
Lucilia Cuprina ◽  
Upwind Flight ◽  
Australian Sheep ◽  
Cutaneous Myiasis ◽  
Gravid Females

AbstractGroups of gravid females of Lucilia cuprina (Wiedemann) in a 1-m3 cage flew upwind in response to sheep placed upwind of the cage. No downwind flight or other response was observed to sheep placed downwind of the fly cage. Flystruck sheep stimulated the greatest accumulation of flies on the upwind cage wall (46% of the caged flies), followed by sound wet sheep (29%) and sound dry sheep (19%). All sheep tested caused significantly more flies to accumulate on the upwind wall than did controls consisting of either no bait or a man placed upwind (14%). Struck sheep elicited significant upwind movement of flies at distances of up to 20 m; sound, dry sheep did so only up to 10 m. It was concluded that L. cuprina is able to orient from a distance in response to volatile sheep kairomones; kairomones from dry sheep are augmented by wetting or the presence of cutaneous myiasis, as indicated by an enhanced fly response. The experiments performed did not exclude a role for visual or thermal cues in blowfly orientation to sheep.

The incidence of flystrike in sheep in relation to weather conditions, sheep husbandry, and the abundance of the Australian sheep blowfly, Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae)

1990 ◽  
Vol 41 (6) ◽  
pp. 1155 ◽  
Author(s):  
KG Wardhaugh ◽  
R Morton
Keyword(s):  
Environmental Variables ◽  
Cloud Cover ◽  
Rainfall Intensity ◽  
New South ◽  
Weather Conditions ◽  
Lucilia Cuprina ◽  
South Wales ◽  
Dry Conditions ◽  
Australian Sheep ◽  
Gravid Females

The incidence of cutaneous myiases (flystrike) in sheep in the Southern Tablelands of New South Wales is examined in relation to the abundance of the Australian sheep blowfly, Lucilia cuprina (Wiedemann), and various management and environmental variables known to affect sheep susceptibility. Regression analysis showed that the incidence of flystrike increased with increases in the density and activity of gravid L. cuprina. Body strike was more predictable than crutch strike, and was positively correlated with monthly rainfall, cloud cover and the rate of pasture growth. Rainfall intensity was also important, with frequent, small falls of rain being more conducive to flystrike than occasional heavy showers. The combination of weather, pasture and fly effects accounted for 76% of the observed variance in body strike and 58% of that for crutch strike. Crutch strike appeared to replace body strike under dry conditions and also when fly densities were low (less than 0.5 gravid females h-1 trap-1), irrespective of weather conditions. The analysis of total strike suggested that rainfall determined overall levels of strike, whereas pasture conditions and cloud cover regulated type of strike.

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