western flower thrips host plants


Scarring on avocados. Unfortunately, there is little basic ecophysiology information on the response of western flower thrips to host plant chemistry. Western flower thrips, Frankliniella occidentalis, is a worldwide pest with a wide range of host plants, the main ones being vegetable crops such as sweet peppers, strawberries, melons, cucumbers, eggplant, beans and tomatoes, as well as field crops, flowers, fruit trees, citrus and many ornamental plants. Heavily infested flower buds may not open at all, and fruit can be damaged, even with low thrips populations. Western flower thrips (WFT), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) is a native insect of the western part of North America that was first reported in 1895.In the 1970s and early 1980s, this species spread throughout North America (Beshear 1983). Plants were sampled primarily while in flower. It was collected on 64 plant species, all of which were hosts for WFT. The maxillae then ingest the fluids from the cells, but not directly from the vascular tissue. Western flower thrips prefer to feed on developing plant tissues, such as growing tips and flower buds. Large numbers of young flush leaves were killed which negatively impacted ACP, as ACP is dependent on flush for oviposition and nymph development. TSWV has a very wide host range, and the only thrips that transmits the virus in a persistent way. The objective of this study was to investigate quantitative host plant resistance to thrips in carrot and to identify candidate compounds for constitutive resistance. Both viruses affect a wide range of plants, and often a single host plant may be infected by both viruses. Onion thrips is a key pest of onions, but will also attack the young growth of capsicum, cucumbers and the flowers of some flower crops. To avoid misunderstand-ings and misinterpretations, it is clear that the term “host plant” must be applied in the proper context. On leaves thrips can ingest the cell contents of Management. Several species of thrips can infest greenhouse floral crops, but the most severe and common pest in recent years has been the western flower thrips (WFT), Frankliniella occidentalis. The behavioural responses of adult female western flower thrips, Frankliniella occidentalis (Pergande) to volatiles from meadow-sweet (Filipendula ulmaria), bay laurel (Laurus nobilis) and sage (Salvia officinalis) were investigated in laboratory bioassays. Damage includes feeding scars and leaf distortion (see Figures 9 and 10). Abstract. The western flower thrips (Frankliniella occidentalis) is the most important vector for both tomato spotted wilt virus (TSWV) and impatiens necrotic spot virus (INSV). The egg is cylindrical and slightly kidney shaped. Both viruses affect a wide range of plants, and often a single host plant may be infected by both viruses. 117) and melon thrips (see Fact Sheet no. Because of its polyphagous feeding and breed-ing behavior, western flower thrips is exposed to a broad diversity of plant allelochemicals (Feyere-isen 1999). Host Plants: This thrips feeds on almost any flowering plant. Based on pesticide resistance studies, western flower thrips has various metabolic detoxification enzyme systems that could help it to overcome secondary plant defenses (Jensen 2000; Espinosa et al. Western flower thrips attack a wide range of plants including: carnations, chrysanthemums, corn, cotton, cucumbers, eggplants, gerberas, grapes, impatiens, melons, peaches, peanuts, peas, and peppers. TSWV is a tospovirus spread by western flower thrips, onion thrips (see Fact Sheet no. 106); however, the western flower thrips is the more important vector. Western flower thrips, the primary thrips species encountered by greenhouse producers, is extremely polyphagous, feeding on a wide-variety of horticultural crops grown in both commercial and research greenhouses. An infestation of Western Flower Thrips (WFT), Frankliniella occidentalis (Pergande), recently developed on young citrus trees in a greenhouse devoted to rearing Asian citrus psyllid (ACP), Diaphorina citri Kuwayama. WFT damage plants directly by feeding, and indirectly by acting as vectors for the tospoviruses impatiens necrotic spot virus (INSV) and tomato spotted wilt virus (TSWV). Western flower thrips feeds on apple, apricot, peach, plum, nectarine, orange, lemon, alfalfa, potato and numerous weed species. This generally occurs in the compost or soil below the plant on which the larvae fed. Damage. One hundred thirty species of native and introduced plants growing in uncultivated land adjacent to apple and pear orchards of central Washington and northern Oregon were sampled for the presence of the western flower thrips (WFT) Frankliniella occidentalis (Pergande, 1895) and potential thrips predators. Small spider immatures (first and second instars) of several species were common on certain host plants, and are likely to feed on WFT. We confirmed whether α-ionone is effective for the combination of Arabidopsis and western flower thrips by releasing adult female thrips onto the leaf surface of wild-type (Col-0) plants that were treated with 300 μM α-ionone. This cosmopolitan and polyphagous invader is abundant in many field and greenhouse crops. The platform was used to establish host-plant preference of thrips with a large plant population of 345 wild Arabidopsis accessions (the Arabidopsis HapMap population) and the method was optimized with two extreme accessions from this population that differed in resistance to thrips. 1 INTRODUCTION. Carnations, chrysanthemums, gerberas, geraniums, marigolds, pansies, and roses are the major host plants. Successful IPM programmes for management of western flower thrips (WFT), Frankliniella occidentalis, on UK strawberry crops have been developed using knowledge of its biology and behaviour (Bennison Photo: Thrips: www.gardentech.com Thrips are tiny insects that are mainly active at night. As a result, you typically see the damage they cause well before seeing the insects themselves. As these parts of the plant grow, they can become severely deformed. Feeding by these tiny insects causes plant cells to collapse, which may eventually result in distorted The number of WFT on non-flowering plants was significantly lower than on flowering plants or single cut flowers. occidentaliswas main-tained on potted, flowering plants of the susceptible chrysanthemum cultivar Sunny Cassa in a greenhouse at258 C and70% relative humidity. Damage: The western flower thrips feeds on the flowers and foliage by inserting its modified left mandible into the tissue, and sucking the fluids from cells. Crops attacked by this pest include beans, burdock (gobo), capsicum, cucumber, eggplant, lettuce, onion, tomatoes and watermelon. HOSTS. western flower thrips, Frankliniella occidentalis (Pergande), one of the most destructive insect pests of greenhouse-grown crops. This species of thrips is native to the Southwestern United States but has spread to other continents, including Europe, Australia (where it was identified in May 1993), and South America via transport of infested plant material. Rearing of Western Flower Thrips.A culture ofF. Other thrips will attach the following host plants - annual asters, dahlias, gladioluses, lilies, tuberous begonias and wax begonias. Discoloration as a result of thrips feeding many field and greenhouse crops gladioluses lilies! Also vector some potentially devastating diseases, such as Impatiens necrotic spot virus or Tomato spotted wilt.! Fruit can be damaged, even with low thrips populations and achilleas, and often a host! 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