scholarly journals Arthropod Infestation Levels on Mandarins in California

2020 ◽  
Vol 113 (5) ◽  
pp. 2335-2342
Author(s):  
Bodil N Cass ◽  
Lindsey M Hack ◽  
Tobias G Mueller ◽  
Darian Buckman ◽  
Elizabeth E Grafton-Cardwell ◽  
...  
Keyword(s):  
Citrus Sinensis ◽  
Predatory Mites ◽  
Citrus Species ◽  
Panonychus Citri ◽  
Forficula Auricularia ◽  
Crop Species ◽  
Citrus Red Mite ◽  
Citrus Production ◽  
Arthropod Pests ◽  
European Earwig

Abstract Integrated pest management (IPM) guidelines for horticulture are typically established from years of experimental research and experience for a crop species. Ecoinformatics methods can help to quickly adapt these guidelines following major changes in growing practices. Citrus production in California is facing several major challenges, one of which is a shift away from sweet oranges [Citrus sinensis (L.) Osbeck Sapindales: Rutaceae] toward mandarins (including mostly cultivars of C. reticulata Blanco and C. clementina hort. ex Tanaka). In the absence of IPM guidelines for mandarins, growers are relying on pest information developed from oranges. We mined a database of management records from commercial growers and consultants to determine densities for four arthropod pests: cottony cushion scale (Icerya purchasi Maskell Hemiptera: Monophlebidae), citricola scale (Coccus pseudomagnoliarum Kuwana Hemiptera: Coccidae), European earwig (Forficula auricularia Linnaeus Dermaptera: Forficulidae), citrus red mite (Panonychus citri McGregor Acari: Tetranychidae), and a natural enemy, predatory mites in the genus Euseius (Congdon Acarina: Phytoseiidae). Densities of cottony cushion scale were approximately 10–40 times higher in the two most commonly grown mandarin species than in sweet oranges, suggesting this pest is reaching outbreak levels more often on mandarins. Densities of the other pests and predatory mites did not differ significantly across citrus species. This is a first step toward establishing IPM guidelines for mandarins for these pests; more research is needed to determine how arthropod densities relate to crop performance in mandarins.

scholarly journals Natural enemies of citrus red mite (Panonychus citri) in citrus orchards

2005 ◽  
Vol 58 ◽  
pp. 299-305 ◽  
Author(s):  
L.E. Jamieson ◽  
J.G. Charles ◽  
P.S. Stevens ◽  
C.E. McKenna ◽  
R. Bawden
Keyword(s):  
New Zealand ◽  
Natural Enemies ◽  
Predatory Mites ◽  
Biocontrol Agents ◽  
Panonychus Citri ◽  
Citrus Red Mite ◽  
Predatory Activity ◽  
Citrus Orchards ◽  
Amblyseius Largoensis

Citrus red mite (CRM) populations can reach high levels in citrus orchards after the application of broadspectrum pesticides to control other pests It is important to know which are the key biocontrol agents of CRM in New Zealand in order to minimise use of pesticides toxic to these natural enemies CRM and natural enemies were monitored in seven orchards from January 2004 to March 2005 Ladybirds Stethorus sp and Halmus chalybeus and predatory mites Agistemus longisetus Amblyseius largoensis and Phytoseiulus persimilus were observed consuming CRM Stethorus sp and A longisetus were the most abundant natural enemies found with CRM The presence of 05 live Stethorus sp per leaf and 051 A longisetus per leaf was associated with the decline of CRM populations (15 eggs and 15 juvenile/adults per leaf) to trace levels in 45 weeks The use of neonicotinoid products can disrupt the predatory activity of Stethorus sp against CRM

Molecular and Reproductive Characterization of Sibling Species in the European Earwig (Forficula auricularia)

Evolution ◽  
1998 ◽  
Vol 52 (1) ◽  
pp. 260 ◽  
Author(s):  
Thierry Wirth ◽  
Rene Le Guellec ◽  
Michel Vancassel ◽  
Michel Veuille
Keyword(s):  
Sibling Species ◽  
Forficula Auricularia ◽  
European Earwig

Panonychus citri. [Distribution map].

1964 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
New Zealand ◽  
Central America ◽  
West Indies ◽  
Pacific Islands ◽  
Distribution Map ◽  
Panonychus Citri ◽  
Citrus Red Mite ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Panonychus citri (McG.) (Acarina, Tetranychidae) (Citrus Red Mite). Hosts: Citrus spp., deciduous fruits, ornamentals, etc. Information is given on the geographical distribution in EUROPE (excl. USSR), Yugoslavia, ASIA (excl. USSR), Ceylon, China, India, Iran, Japan, Lebanon, Turkey, Vietnam, USSR, AFRICA, Republic of South Africa, Tunisia, AUSTRALASIA, and PACIFIC ISLANDS, Australia, Hawaii, New Zealand, NORTH AMERICA, U.S.A., CENTRAL AMERICA and WEST INDIES, West Indies, SOUTH AMERICA, Argentina, Brazil, Chile, Colombia, Peru.

Note on Control of the European Earwig, Forficula auricularia L., in Newfoundland With Traps and Attractants

1965 ◽  
Vol 97 (10) ◽  
pp. 1075-1076 ◽  
Author(s):  
Ray F. Morris
Keyword(s):  
Peanut Butter ◽  
Pitfall Traps ◽  
Forficula Auricularia ◽  
Four Corners ◽  
Set Up ◽  
European Earwig

In a test at St. John's from 20 August to 9 September 1964, grooved-board traps captured more specimens of the Eluropean earwig, Forficula auricularia L., than pitfall traps containing attractants. On 19 August two replicates of one grooved-board and eight Legner traps (Fig. 1) containing bran flakes plus an attractant were set up on a city lot. The Legner traps were set in the soil so that their tops were level with the surface. They were protected from rain by a 12 in. × 12 in. board held in position over the opening by short legs at the four corners. The attractants used were: peanut butter, cod oil, sugar, molasses, honey and macerated earwigs. The traps were attended from 21 August to 9 September and all earwigs removed daily and counted in the laboratory.

Spirodiclofen and spirotetramat bioassays for monitoring resistance in citrus red mite, Panonychus citri (Acari: Tetranychidae)

2011 ◽  
Vol 68 (5) ◽  
pp. 781-787 ◽  
Author(s):  
Yuling Ouyang ◽  
Gregory H Montez ◽  
Lucy Liu ◽  
Elizabeth E Grafton-Cardwell
Keyword(s):  
Panonychus Citri ◽  
Citrus Red Mite

scholarly journals Volatile Compounds and Antioxidant and Antimicrobial Activities of Selected Citrus Essential Oils Originated from Nepal

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6683
Author(s):  
Devi Prasad Bhandari ◽  
Darbin Kumar Poudel ◽  
Prabodh Satyal ◽  
Karan Khadayat ◽  
Sital Dhami ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Citrus Sinensis ◽  
Antioxidant Properties ◽  
Antimicrobial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Citrus Species ◽  
Citrus Peel ◽  
Antioxidant And Antimicrobial Activities

Citrus species of plants are among the most commercially cultivated crops, mainly for their fruit. Besides, the generally consumed flesh inside the fruit, the peel is quite important too. Essential oils extracted from the peel have a history of being used by humankind for centuries. These essential oils are rich in antioxidants and antimicrobial agents. Comparative investigation of volatile constituents, and antioxidant and antimicrobial activities were undertaken. The essential oils were evaluated through gas chromatography-mass spectrometry (GC–MS), and enantiomeric composition by chiral GC–MS. Similarly, the antioxidant properties were evaluated by 2,2-diphenyl-1-picrylhydrazyl scavenging assay, and antimicrobial activities were assayed using the disk diffusion method. The highest extraction yield of 1.83% was observed in Citrus sinensis Osbeck. GC–MS analysis showed limonene (63.76–89.15%), γ-terpinene (0.24–6.43%), β-pinene (0.15–6.09%), linalool (0.35–3.5%), sabinene (0.77–2.17%), myrcene (0.74–1.75%), α-terpineol (0.28–1.15%), and α-pinene (0.2–0.58%) as the major constituents of the essential oil of the Citrus species studied. For the first time, through our study, chiral terpenoids have been observed from Citrus grandis Osbeck essential oil. The order of antioxidant activity is as follows: Citrus grandis Osbeck red flesh > Citrus reticulata Blanco > Citrus sinensis Osbeck > Citrus grandis Osbeck white flesh. Except for Citrus grandis Osbeck white flesh (52.34 µL/mL), all samples demonstrated stronger antioxidant activities than those of the positive control, quercetin (5.60 µL/mL). Therefore, these essential oils can be used as a safe natural antioxidant to prevent product oxidation. Likewise, citrus peel essential oil showed antimicrobial activity against tested bacterial strains, albeit marginal.

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