Diurnal population trends of Megalurothrips sjostedti and Frankliniella occidentalis (Thysanoptera: Thripidae) and their natural enemies on French bean Phaseolus vulgaris (Fabaceae)

Kasina, J; Nderitu, J. H; Nyamasyo, G.; Olubayo, Florence; Waturu, C.; Obudho, Elias Otieno; Yobera, D.

doi:10.1079/ijt2006101

Cited by 6 publications

(3 citation statements)

References 5 publications

(4 reference statements)

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“…Our results also support those of Kareiva (1982) working on the dispersal pattern of two crucifer-feeding flea beetles, Phyllotreta cruciferae and Phyllotreta striolata under field conditions and Rhainds and Shipp (2004) working on the dispersal pattern of adult F. occidentalis in greenhouse crops, who reported that over time insect dispersal can happen over a relatively wide spatial scale with each adjacent Dispersal of adult F. occidentalis was at the peak at 10:15 h and 13:15 h in the first and second planting seasons, respectively. Our results corroborate those of Kasina et al (2006), who reported that dispersal of adult F. occidentalis on field-grown French bean was at peak at 10:00-13:00 h. Dispersal of adult F. occidentalis was dependent on temperature with minimal dispersal activity at temperatures below 15°C and maximum activity at 19°C. However, at temperatures of 21-24°C, there was a decline in dispersal activity of adult F. occidentalis in the first planting season.…”

Section: Discussionsupporting

confidence: 91%

Short range dispersal of western flower thrips in field-grown French beans in Kenya

Nyasani

Subramanian

Orindi

et al. 2017

Int. J. Trop. Insect Sci.

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The short-range diurnal dispersal pattern of adult western flower thrips Frankliniella occidentalis (Pergande), in relation to spatial distribution of French beans, was determined in the field. A total of 1200 adult female F. occidentalis were released on 60 French bean plants with 20 adult thrips per plant at the central release point of 3.14 m2. Dispersal was determined in terms of the number of thrips recorded on French beans planted on concentric circles at 0.9, 1.8, 3.6, 7.2 and 14.4 m radii from a circular central release point for five days. Results indicated that there was a steady increase in the proportion of dispersing adult F. occidentalis from the first to the fourth day in the first planting season, and from the first to the third day in the second planting season. The peak hour for dispersal was 10.15 h in the first season while it was 13.15 h in the second season. Temperature and wind speed were positively associated with the dispersal activity of adult F. occidentalis. Minimal flight activity was at temperatures below 15 °C and peak flight activity was at 19 °C. The prevailing wind direction did not influence the dispersal pattern of adult F. occidentalis in both seasons. Adult F. occidentalis moved up to 7.2 m on French beans on the first day. In both seasons, the mean direction of thrips dispersal was mostly uniformly distributed (not oriented to a particular compass direction) around the central release point. The results provide an insight into developing integrated management strategies against the pest based on isolation of farm fields, management of alterative hosts around French bean fields and insecticide application.

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Section: Discussionsupporting

confidence: 91%

Short range dispersal of western flower thrips in field-grown French beans in Kenya

Nyasani

Subramanian

Orindi

et al. 2017

Int. J. Trop. Insect Sci.

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“…Kasina et al (2006) observed peak population activity of Frankliniella occidentalis at 1300 hours in French bean Þelds. On the contrary, Ugine et al (2006) did not observe any effect of daytime on the population activity of F. occidentalis on impatiens ßowers.…”

Section: Discussionmentioning

confidence: 80%

Biological Parameters ofScirtothrips dorsalis(Thysanoptera: Thripidae) on Selected Hosts

2010

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Since its establishment in Florida in 2005, Scirtothrips dorsalis Hood, a highly polyphagous species, has become an economically important pest of ornamental plants and a potentially significant pest of vegetable and fruit crops. Fruit and vegetable production in Florida is trending toward significant adoption of organic methods and use of widely dispersed small fields in rapidly urbanizing landscapes. Landscape plants may serve as refugia from which S. dorsalis recruits can disperse to nearby fruit and vegetable plantings. Therefore, information on this pest's biology including how it is affected by various host species is needed to develop effective integrated pest management (IPM) programs. In the greenhouse and laboratory condition, we studied the effects of various host plants, development, diel flight activity, oviposition, and demographics of S. dorsalis. The pest preferred Jalapeño pepper and Knockout rose over the other hosts, and it was most active between 1000 and 1600 hours EST. Irrespective of the host species, the duration of each of the immature stadia varied within a narrow range, and their respective sizes were quite similar. Demographic parameters quantified included gross reproduction rate (GRR), net reproductive rate (R(o)), intrinsic rate of increase per day (R(m)), finite rate of increase per day (λ), and mean generation time (T). The pest population may increase by a factor of ≈ 1.09/d, so that it may double in 8 or 9 d. The above information should be helpful in the development of sound programs to manage S. dorsalis on various crops and in the formulation of detection strategies by quarantine officers.

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“…Besides temperature, Lewis (1973) discovered that light intensity was an equally important factor affecting the ßight of thrips. However, according to Ugine et al (2006), sampling time during the day has no effect on F. occidentalis density across impatiens ßower bud stages, but Kasina et al (2006) demonstrated that the average population peak of F. occi- In this study, different time of daily activities were observed in thrips population on mango ßow-ers collected by different sampling techniques with the highest efÞciency demonstrated by the CO 2 immobilization technique. In the washing, shaking, and CO 2 immobilization techniques, thrips populations peaked during midday.…”

Section: Efficiency and Precision Of Sampling Methodsmentioning

confidence: 60%

Diurnal Activity of Four Species of Thrips (Thysanoptera: Thripidae) and Efficiencies of Three Nondestructive Sampling Techniques for Thrips in Mango Inflorescences

Aliakbarpour

Rawi

2010

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Thrips cause considerable economic loss to mango, Mangifera indica L., in Penang, Malaysia. Three nondestructive sampling techniques--shaking mango panicles over a moist plastic tray, washing the panicles with ethanol, and immobilization of thrips by using CO2--were evaluated for their precision to determine the most effective technique to capture mango flower thrips (Thysanoptera: Thripidae) in an orchard located at Balik Pulau, Penang, Malaysia, during two flowering seasons from December 2008 to February 2009 and from August to September 2009. The efficiency of each of the three sampling techniques was compared with absolute population counts on whole panicles as a reference. Diurnal flight activity of thrips species was assessed using yellow sticky traps. All three sampling methods and sticky traps were used at two hourly intervals from 0800 to 1800 hours to get insight into diurnal periodicity of thrips abundance in the orchard. Based on pooled data for the two seasons, the CO2 method was the most efficient procedure extracting 80.7% adults and 74.5% larvae. The CO2 method had the lowest relative variation and was the most accurate procedure compared with the absolute method as shown by regression analysis. All collection techniques showed that the numbers of all thrips species in mango panicles increased after 0800 hours, reaching a peak between 1200 and 1400 hours. Adults thrips captured on the sticky traps were the most abundant between 0800-1000 and 1400-1600 hours. According to results of this study, the CO2 method is recommended for sampling of thrips in the field. It is a nondestructive sampling procedure that neither damages flowers nor diminishes fruit production. Management of thrips populations in mango orchards with insecticides would be more effectively carried out during their peak population abundance on the flower panicles at midday to 1400 hours.

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Diurnal population trends of Megalurothrips sjostedti and Frankliniella occidentalis (Thysanoptera: Thripidae) and their natural enemies on French bean Phaseolus vulgaris (Fabaceae)

Cited by 6 publications

References 5 publications

Short range dispersal of western flower thrips in field-grown French beans in Kenya

Short range dispersal of western flower thrips in field-grown French beans in Kenya

Biological Parameters ofScirtothrips dorsalis(Thysanoptera: Thripidae) on Selected Hosts

Diurnal Activity of Four Species of Thrips (Thysanoptera: Thripidae) and Efficiencies of Three Nondestructive Sampling Techniques for Thrips in Mango Inflorescences

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