Surveys of Leafhoppers (Homoptera: Cicadellidae) and Pear Psylla (Homoptera: Psyllidae) in Pear and Peach Orchards and the Spread of Peach Yellow Leaf Roll Disease

Purcell, Alexander H.; Suslow, Karen

doi:10.1093/jee/77.6.1489

Cited by 16 publications

(8 citation statements)

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“…Thus, our results suggest that there were no large behavioral or physiological differences between insects from the two sources. Purcell & Suslow (1984) suggested that movement out of pear by psylla in the fall occurred in a 'wave-like' pattern, and that a large portion of the movement takes place within fairly short distances of the orchard (i.e., < 150 m; Purcell & Suslow, 1984). came to a similar conclusion for winterforms moving over orchard and non-orchard habitats.…”

Section: Discussionmentioning

confidence: 98%

“…Immatures that experience short days produce winterform adults, whereas those exposed to long day conditions produce summerforms (McMullen & Jong, 1976;Mustafa & Hodgson, 1984). Summer generation adults are reproductive, and are apparently fairly sedentary (in that few leave the pear orchard unless population densities are high; Purcell & Suslow, 1984). Winterform adults first appear in early fall.…”

Section: Introductionmentioning

confidence: 99%

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Tethered flight activity of pear psylla, Cacopsylla pyricola: seasonal, host, and morphotypic effects

Horton

Lewis

1996

Entomologia Exp Applicata

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Pear psylla, Cacopsylla pyricola Förster (Homoptera: Psyllidae), was flown in the laboratory to test hypotheses suggested by field observations. Flight durations of the same insects flown on two different days were highly correlated, suggesting that there were biological differences among insects in flight tendencies. Flight durations were similar between summerform and winterform morphotypes. Flight frequencies and durations increased between September and November collections of winterforms, results that are consistent with field observations. Long‐duration (60+ min) flights were three to four times as frequent in winterforms restricted to senescing pear foliage compared to insects provided access to pear seedlings. Winterforms collected during the fall flight period from a pear orchard and an adjacent apple orchard (an overwintering habitat) showed similar flight durations. There was no correlation between flight durations and any of five body and wing measurements; body size of winterforms increased between September and November. It has been proposed elsewhere that much of the fall movement into adjacent non‐pear habitats by winterforms is due to short duration non‐migratory flights rather than to a true migratory flight. The lack of differences between apple‐ and pear‐collected winterforms may be consistent with this hypothesis.

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Tethered flight activity of pear psylla, Cacopsylla pyricola: seasonal, host, and morphotypic effects

Horton

Lewis

1996

Entomologia Exp Applicata

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“…adams & los (1989) showed that yellow sticky traps can be used to predict densities of immature pear psyllids and damage to the host. Changes in activity or behaviour between sampling periods may obscure density changes between the same periods (Fleischer et al 1983;Purcell & Suslow 1984;Krysan & Horton 1991).…”

Section: Discussionmentioning

confidence: 99%

Sampling method affects estimates of population density and reproductive maturity of summer‐form pistachio psyllids

Zartaloudis¹,

Navrozidis²,

Copland³

2007

New Zealand Journal of Zoology

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In this study, the effects of using three different sampling methods (yellow sticky traps, beating tray, organdy bags) on estimating the distribution through the canopy of the summer-form adults of the pistachio psyllid (Agonoscena targionii (Licht.)) was investigated throughout the vegetative period. The traps or bags were hung at two heights in the tree canopy, 3.5 m above ground and 2 m above ground. Psyllids were counted weekly, and their sex determined. adult abundance varied during the study, but all three sampling methods indicated that densities were higher in the upper canopy than the lower canopy. The percentage of females having mature eggs was lowest in late May, and highest in June and September. Sex ratios were highly variable among sampling dates and among sampling methods, at both canopy heights. Sex ratios in bags tended to be more female-biased in the lower canopy than in the upper canopy. Sticky trap counts were significantly male biased, more so in the upper canopy than in the lower canopy. Mean sex ratios differed significantly between bag and sticky trap samples at both heights, but did not differ significantly between tray and bag samples at either height. In addition, for a given tray or bag count, sticky trap catch of males was larger than catch of females, and was larger in the upper canopy than in the lower canopy. Bag counts (psyllids per leaflet) strongly increased with tray count. Z07005; Online publication date 19 September 2007 Received 24 February 2007; accepted 13 August 2007Of the three sampling methods described here, the bag samples provided direct estimates of psyllid numbers per leaflet, but this method is extremely time consuming. Bag counts (psyllids per leaflet) increased with tray count, suggesting that beat trays can be used to estimate absolute densities.

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“…Cigarrinhas da família Cercopidae e alguns Psyllidae têm sido pesquisados quanto à possibilidade de transmitirem doenças provocadas por bactérias limitadas ao xilema (Purcell 1980, Purcell & Suslow 1984. Assim, o escopo deste estudo não se limitou apenas aos cicadelídeos, mas aos auquenorrincos de maneira geral.…”

unclassified

“…Nas pesquisas de vetores de X. fastidiosa em plantas frutíferas, normalmente o esforço é concentrado nas cigarrinhas arborícolas, visto serem estas espécies as mais prováveis transmissoras da bactéria entre hospedeiros arbóreos (Taboada et al 1975, Purcell & Suslow 1984, Dal Ri & Delaiti 1990. As cigarrinhas D. costalimai, O. facialis e Acrogonia sp., identificadas como vetoras da CVC em citros, são de hábito arborícola (Lopes et al 1996, Roberto et al 1996.…”

unclassified

Fauna de Homoptera: Auchenorrhyncha em Pomares de Ameixeira em Santa Catarina

Hickel

Ducroquet

Leite³

et al. 2001

Neotrop. Entomol.

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-The Homoptera: Auchenorrhyncha fauna of plum orchards in an area of epidemic spread of plum leaf scald disease in mid-west Santa Catarina State, Brazil were surveyed in 1991 and 1992 to search for plum leaf scald vectors. The homopterans were sampled by sweeping net and yellow water pan traps and when possible submitted to ELISA assay to detect Xylella fastidiosa bacteria. A total of 112 species were caught, distributed in the families Aethalionidae (1 species), Cercopidae (7), Cicadellidae (64), Cixiidae (3), Delphacidae (5), Issidae (2), Membracidae (18), Tropiduchidae (1) and Psyllidae (11). X. fastidiosa was detected in cicadellids Agallia spp. (two species), Balclutha hebe (Kirk.), Bucephalogonia xanthophis (Berg), Chlorotettix minimus (Baker), Exitianus obscurinervis (Stal), Haldorus sp., and Plesiommata corniculata Young; and in cercopids Deois schach (F.) and Deois flavopicta (Stal). The arborean cicadellids collected in water traps, like Dilobopterus dispar (Germar) and Oncometopia sp., could not be tested in ELISA assay because of their bad conditions of conservation.

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Surveys of Leafhoppers (Homoptera: Cicadellidae) and Pear Psylla (Homoptera: Psyllidae) in Pear and Peach Orchards and the Spread of Peach Yellow Leaf Roll Disease

Cited by 16 publications

References 0 publications

Tethered flight activity of pear psylla, Cacopsylla pyricola: seasonal, host, and morphotypic effects

Tethered flight activity of pear psylla, Cacopsylla pyricola: seasonal, host, and morphotypic effects

Sampling method affects estimates of population density and reproductive maturity of summer‐form pistachio psyllids

Fauna de Homoptera: Auchenorrhyncha em Pomares de Ameixeira em Santa Catarina

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