Seasonal Abundance and the Effect of Light Trap Height on the Captures of the Vesicating Beetles of the GenusPaederus(Coleoptera: Staphylinidae) in Brazil

2017 ◽  
Vol 127 (1) ◽  
pp. 21-27
Author(s):  
Francinaldo Soares Silva ◽  
Shelre Emile Pereira Duarte Lobo ◽  
Apoliana Araújo da Silva
Keyword(s):  
Light Trap ◽  
Seasonal Abundance ◽  
Trap Height ◽  
Effect Of Light

The effect of light trap height on the numbers of Culicoides midges collected under field conditions in South Africa

2009 ◽  
Vol 166 (3-4) ◽  
pp. 343-345 ◽  
Author(s):  
G.J. Venter ◽  
K.G. Hermanides ◽  
S.N.B. Boikanyo ◽  
D.M. Majatladi ◽  
L. Morey
Keyword(s):  
South Africa ◽  
Light Trap ◽  
Field Conditions ◽  
Trap Height ◽  
Effect Of Light

The Seasonal Abundance of Female Biting-Midges, Culicoides-Brevitarsis Kieffer (Diptera, Ceratopogonidae), in Coastal South-Eastern Australia

1991 ◽  
Vol 39 (3) ◽  
pp. 333 ◽  
Author(s):  
MD Murray
Keyword(s):  
Generation Time ◽  
New South ◽  
Light Trap ◽  
Early Summer ◽  
Climatic Conditions ◽  
Seasonal Abundance ◽  
Biting Midges ◽  
Cattle Movements ◽  
South Wales ◽  
Eastern Australia

Daily light-trap collections of female C. brevitarsis were made at three localities along the northern coastal plains of New South Wales. Numbers increased during spring, were maximal in summer, declined during autumn and were minimal in winter. The generation time was about 3-4 weeks in the summer and several cohorts of nulliparous midges, probably representing different generations, were detected from spring to autumn. Some breeding continued throughout the winter. Summer abundance appeared to be associated with high rates of reproduction in late spring or early summer, and this occurred when rainfall was adequate for good pasture growth. Midge survival was better in the summer than in other seasons of the year, and numbers of parous females increased rapidly whenever it rained, probably due to their increased survival and longevity. At each locality, numbers fluctuated throughout spring, summer and autumn, with peaks and troughs of abundance which were often not obviously associated with concurrent climatic conditions or cattle movements.

scholarly journals Comparaison de collectes avec différents pièges lumineux

2009 ◽  
Vol 62 (2-4) ◽  
pp. 138
Author(s):  
Gert J. Venter ◽  
Karien Labuschagne ◽  
Junita Liebenberg ◽  
K. Hermanides ◽  
S. Boikanyo ◽  
...  
Keyword(s):  
Species Composition ◽  
Integrated Control ◽  
Light Trap ◽  
Latin Square ◽  
Control Measures ◽  
Light Sources ◽  
Monitoring Tools ◽  
Trap Height ◽  
Species Richness And Abundance ◽  
Bg Sentinel

Awareness of all potential vectors of the viruses of bluetongue and African horse sickness is crucial for the implementation of integrated control measures, risk analysis and disease manage­ment. The primary monitoring tools used for the collection of Culicoides midges are various models of suction light traps. In order to facilitate comparison of data between laboratories, the efficiency of the Onderstepoort, Rieb, mini-CDC, Pirbright and BG-sentinel, used at present and during the past in Europe, was compared in the field in South Africa. In a separate series of comparisons, the influence of trap height, the presence of hosts and the addition of octenol to the trap on species composition and number of Culicoides midges collected were determined. Comparisons were done in an appropriate number of replicates of a randomized Latin square design. The Onderstepoort trap collected significantly more Culicoides midges in summer and in winter than the other traps. It was found that relatively small vari­ations in the height at which the trap is deployed can have a sig­nificant influence on the number of midges collected. Although these results seem to indicate a height preference for C. imicola it needs to be determined to what extent environmental fac­tors, the presence of nearby structures, other light sources and hosts near the trap might have on the height at which Culicoides midges will fly. Significant differences were found in the num­ber of Culicoides and especially C. imicola numbers collected at various distances from host animals. Statistically significant higher numbers and proportions of C. imicola were collected immediately next to the animals compare to collections made 5 to 30 m away from animals. The addition of 1-octen-3-ol (9.1 mg/h) and 4-methylphenol (15.5 mg/h) did not have any significant influence on the number of Culicoides collected with the Onderstepoort trap. Relatively small but statistically signifi­cant differences were found in the species composition, parous rates, sex ratios as well as the ratio of Culicoides midges to other insects, as determined by the different collection regimes. Despite a great variety of factors that can influence light trap results, it remains the most reliable and practical way to deter­mine species richness and abundance in an area. The results of this study highlighted a few factors that may influence the num­bers of Culicoides midges collected and the problems involved in the reliable comparison of light trap data between different collection sites. It emphasized the need for the standardization of techniques for measuring the variables of vectorial capacity

THE SPATIAL AND SEASONAL ABUNDANCE OF TRICHOCORIXA VERTICALIS (HEMIPTERA: CORIXIDAE) IN SALT MARSH INTERTIDAL POOLS

1979 ◽  
Vol 111 (9) ◽  
pp. 1005-1011 ◽  
Author(s):  
Bruce C. Campbell
Keyword(s):  
Salt Marsh ◽  
Air Temperature ◽  
Light Trapping ◽  
Light Trap ◽  
Aquatic Insect ◽  
Ambient Air ◽  
Seasonal Abundance ◽  
Ambient Air Temperature ◽  
Drying Up ◽  
Intertidal Pools

AbstractThe corixid Trichocorixa verticalis (Fieber) was the most abundant aquatic insect in small intertidal pools (potholes) of a New Jersey salt marsh. Aquatic samples revealed that first to third instars of T. verticalis were evenly distributed but the distribution of fourth and fifth instars was associated with the abundance of chironomid larvae. Aquatic samples of adult T. verticalis showed wide fluctuations in abundance. These fluctuations were associated with the drying up of shallower potholes, forcing adults to migrate to deeper sites that still retained water.Light trapping of adult T. verticalis showed that there was a negative correlation between abundance and nocturnal ambient air temperature. This correlation indicated that T. verticalis dispersed on cooler nights to minimize water loss that would have been high had they emerged from warm pothole water temperatures into warm ambient air temperature. Spatial heterogeneity in the abundance of T. verticalis in light-trap samples was associated with differences between plots in water-surface area within a 100 m radius of the light trap. Dispersive behavior of T. verticalis is discussed in relation to harsh, ephemeral, and unpredictable salt-marsh aquatic habitats.

scholarly journals Seasonal abundance and sexual variation in morphometric traits of Oxelytrum discicolle (Brulle, 1840) (Coleoptera: Silphidae) in a Brazilian Atlantic Forest

2006 ◽  
Vol 6 (2) ◽  
Author(s):  
Paulo Sérgio Fiuza Ferreira ◽  
Evaldo Martins Pires ◽  
Raul Narciso Carvalho Guedes ◽  
Márcio Mendes ◽  
Lívia Aguiar Coelho
Keyword(s):  
Atlantic Forest ◽  
Light Trap ◽  
Seasonal Abundance ◽  
Sexually Dimorphic ◽  
Brazilian Atlantic Forest ◽  
Wet Season ◽  
Morphometric Traits ◽  
Forest Reserve ◽  
Minas Gerais State ◽  
Peak Abundance

A total of 293 specimens of Oxelytrum discicolle were sampled weekly over a period of two years using a black light trap. The study took place in an Atlantic Forest reserve located near Viçosa city, Minas Gerais State, Brazil. The period of peak abundance of O. discicolle occurred during the wet season between the months of October and March. Statistical analysis showed that the abundance of individuals was significantly and positively correlated with temperature, but not with rainfall or relative humidity. Of 28 morphological measurements taken on each collected specimen, seven were found to be sexually dimorphic; however, neither morphology nor the degree of sexual dimorphism varied significantly among seasons.

Sign in / Sign up

Export Citation Format

Share Document