Hosts: polyphagous. Species name. The spinosyns, spinosad (SpinTor) and spinetoram (Radiant), when applied to the foliage were highly effective against S. dorsalis larvae and adults. The population density was highest during March through June with a peak in April and lowest during January and February. Information obtained on life table and demographic parameters and on daily activity patterns of the pest provides the foundation for understanding the capacity of the pest to rapidly build large large populations on hosts such as cotton, peanut, pepper, and ornamentals such as lisianthus. Disseminate information to research, extension and regulatory personnel, and also to growers in Florida and Caribbean countries. In each country a group of people will be trained to collect and identify S. dorsalis, and prepare specimens for microscopic examination. The efficacy of some bio-rational insecticides, such as neem, neem oil, garlic barrier and hot pepper wax, will also be evaluated in various crop systems. %PDF-1.3 %���� Imidacloprid provided significant reduction of S.dorsalis when applied as Admire as a soil drench or when applied as Provado to the foliage. Sessions may be organized at the annual meetings of the Caribbean Food Crops Society and the Florida Entomological Society. Dr. Lance S. Osborne, Mid-Florida Research & Education Center, Apopka, FL, Dr. Amanda Hodges, Entomology and Nematology Department, University of Florida, Gainesville, FL took the lead in educating county agents and growers in Florida and in assembling host records. The innate capacity for natural increase (rm) and the mean duration of a generation (T) of S. dorsalis did not differ between those reared on pepper or on rose. Bailey (1945) and Priesner (1932), in their work on Scirtothrips, mention S. dorsalis as a distinct species. Moreover, this information will enable growers to use neonicotinoid insecticides more selectively to avoid the decimation of populations of natural enemies. Immatures, called larvae, look similar to adults but are even smaller and lack wings. Its biology and management are little known in the agro-ecosystems in western hemisphere. We investigated distribution patterns of S. dorsalis in fields and plants of ‘Scotch Bonnet’ pepper, Capsicum chinense Jacq., on St. Vincent in 2004 and 2005. Submitted: June 16th 2012 Reviewed: November 13th 2012 Published: March 14th … Determination host distribution will be informed by previous studies conducted by various researchers in Asia. Scirtothrips dorsalis was first detected in Highlands County, Florida, in 1991. The presence and distribution of Scirtothrips dorsalis was reported in Colombia in the Andean, Caribbean, and Orinoquia regions, from 0 to 1,200 meters of altitude (MASL) in the warm climate zone, with less than 2,000 mm rainfall per year and a temperature above 24°C, which corresponds to the tropical dry forest life zone (TDF). Two manuscripts will be published in refereed journals on the distribution, bionomics and management of S. dorsalis in the Western Hemisphere. Gain the goodwill and cooperation of agricultural personnel in each country, present talks and poster on S. dorsalis damage and train them with necessary knowledge on pest management to continue further studies on sampling, insecticide evaluation and biocontrol. Scientists believe that Scirtothrips dorsalis originated either in Southeast Asia or in the Indian subcontinent, but it is now widely distributed. The efficient biocontrol agent will be mass reared for inundated release at the beginning of S. dorsalis infestation. ... S. Ludwig, L.S. Within this genus, Scirtothrips dorsalis Hood is a significant pest of various economically important vegetable, ornamental and fruit crops in southern and eastern Asia, Oceania and ... Venette and Davis [28] projected the potential geographic distribution of S. dorsalis in North America. Not recorded from New Zealand but considered a high risk potential invader, this species is widespread from Pakistan to Japan and Australia, and also introduced in Israel, the Carribean area, and parts of South America. In Japan, S. dorsalis is a pest of tea and citrus (Kodomari 1978). Reddy, and A.M. Ghanekar. On the otherhand it is not clear why the pest is not yet destructive on tropical fruits in Puerto Rico but not in Florida. Metarhizium anisopliae (green muscardine fungus) at 227 ml/100 l effectively reduced S. dorsalis adults on cotton. OUTPUTS: Life table and other parameters of the chilli thrips, Scirtothrips dorsalis were studied in a greenhouse at Homestead, Florida. These objectives will be conducted in close cooperation with CARDI scientists and personnel from Ministry of Agriculture in each country, especially St. Vincent and the Grenadines and St. Lucia, where most of the work on chemical, biorational cultural and biological control will be conducted. In 2008 S. dorsalis was found in the Greater Caribbean Region in Barbados, Florida, Jamaica, Puerto Rico, Texas, Trinidad & Tobago, St. Lucia, St. Vincent, Venezuela and Suriname, but not in the French West Indies, Guyana, Hispaniola and Costa Rica. Their potentiality will be assessed in the laboratory condition. Scirtothrips dorsalis Hood. In order to manage S. dorsalis, chemical control will be developed using approaches successfully developed against Thrips palmi. Determine distribution of S. dorsalis in different countries in Caribbean Region. A new distribution map is provided for Scirtothrips dorsalis Hood (Thysanoptera: Thripidae). For the purpose of studying distribution patterns of S. dorsalis, an area of 332 m2 of each field was divided into 60 equal plots, each 4.6 m long and 1.2 m wide, and each plot contained 5 pepper plants. Notes are given on the host range, distribution and recognition of the ten species of Scirtothrips recorded as pests: S. aurantii Faure on citrus in South Africa and bananas in Yemen; S. bispinosus (Bagn.) Abstract. The net reproduction rate (Ro) was higher on pepper (11.50) than on rose (9.47). Biology and distribution. It is abundant on sacred lotus in Thailand (Mound and Palmer 1981), and on chilli peppers in India (Ramakrishna Ayyar 1932, Ramakrishna Ayyar and Subbiah 1935), where it is also a serious pest of peanuts (Amin 1979, 1980). Scirtothrips dorsalis Hood Chilli thrips, castor thrips, assam thrips, yellow tea thrips, strawberry thrips. A list of candidate insecticides has been prepared. Also the use of a number of the less harsh biorational chemicals will be developed. PROJECT MODIFICATIONS: Since we received funding only for the first two years of this study, we had to curtail travel in the Caribbean Region to determine the current geographic distribution of the pests and how damage by the pest is manifested in different geographical settings. Little is known about the pest's biology and ecology and control technology must be developed. The number and distribution of setae on the median area of the pronotum are known to be variable within some Scirtothrips species, as well as in some other Thripidae (O'Donnell & Mound 2016). : Scirtothrips dorsalis distribution in pepper fields 313 tubing. THRIPIDAE, THRIPINAE. Other types of traps will be evaluated. : Scirtothrips dorsalis distribution in pepper fields 313 tubing. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. Consequences of Introduction: 1) Climate/Host Interaction: The present distribution of Scirtothrips dorsalis corresponds to USDA plant hardiness zones 8-12, indicating that it is likely to find a favorable climate in most of California. Florida Entomologist 91(1):79-86. Chilli thrips, Scirtothrips dorsalis, are tiny (> 2mm long), cigar-shaped insects. The preoviposition period on pepper (3.60 d) was the same as on rose. In collaboration with f Cooperative Agricultural Pest Survey, we will organize an active surveillance program to detect the pest in south Florida. Distribution of Scirtothrips Dorsalis in the Carribbean Region and the Development of Chemical and Biological Methods to Manage this Pest. Determine an efficient but accurate method of trapping S. dorsalis. Attempts will be made to facilitate adoption of this proven control technologies in the management of fruits, ornamental and vegetable production system. Sampling indicated S. dorsalis had not established a Scirtothrips dorsalis Hood, 1919. The .gov means it’s official.Federal government websites always use a .gov or .mil domain. A number of potentially effective predators have already been identified, and their effectiveness in the field will be assessed. A standard trapping method will be developed, which can be used by others in different locations. Distribution of chilli thrips, Scirtothrips dorsalis (Thysanoptera: Thripidae), in pepper fields and pepper plants on St. Vincent Main content area. Scirtothrips dorsalis is a widespread pest, described as a new species by Hood in 1919 from 34 females collected in India on castor and chillies and subsequently recorded by Ramakrishna Ayyar (1928) and Shumsher Singh (1944). The chilli thrips, Scirtothrips dorsalis Hood, is a serious pest of numerous important vegetable and ... number and distribution of the antennal sensilla in males and females. ߶)DЍ�����K]&�@�sd�=?9�ܵ��=ߏ��z�p���~b�]�2G����O��)}œN�'��M-_����Lqb��C=��zX��6^1�+���2マw>],.o�9�'A�$u����9A��=$h©}X�b@}��}$����e���.L�(/��dO�*��8&���m��c��Gm�y��Wh�Q�j�>� �e�[�c�Gi�cfY����MT�Q���Ȃ%�6�2o��CF?`�?R���-,� ͭF'�^Q���vC��_�z����y��փ����4K�'B'Q�4Aq�N���W���&H�u�md. This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. Females oviposited most eggs during 10.00 - 04.00 EST. Neither adult nor larval populations were substantially suppressed by any of the following pyrethroids: cyfluthrin (Baythroid), zeta-cypermethrin (Mustang), cyhalothrin-lambda (Warrior), and esfenvalerate (Asana XL). D@b` P�����+�@ Wt*�UK This may provide information on the feeding and reproductive behavior of S. dorsalis on that species of plant. Distribution of Scirtothrips Dorsalis in the Carribbean Region and the Development of Chemical and Biological Methods to Manage this Pest Investigators Seal, Dakshina Institutions University of Florida Start date 2005 End date 2008 Objective. Thiamethoxam (Actara) was more effective when used as a foliar application than when applied as a soil drench as Platinum. Scirtothrips dorsalis Hood is a significant pest of various vegetable, ornamental, and fruit crops. Scirtothrips dorsalis Hood.. Taxonomic position: Insecta, Hemimetabola, Thysanoptera, Terebrantia, Thripidae.. A Ribosomal DNA ITS2 marker for the identification of S. dorsalis is available.. Common name: Chilli thrips, yellow tea thrips.. Geographical distribution: The Far East, Oceania, South Africa, Israel, the Caribbean and southern USA.Distribution Maps of Plant Pests, Map 475. Mean numbers of larvae per plant were significantly higher on pepper and on the rose cultivar, Knockout, than on bean, eggplant, squash and tomato. Scirtothrips dorsalishas been reported from South Africa and the Ivory Coast, and plant quaranti… Authoritative taxonomic determinations were provided by Dr. G. B. Edwards, Florida Department of Agriculture and Consumer Services. Original name and synonyms The risk Scirtothrips dorsalis (Chilli thrips) would pose to California is evaluated below. Non Technical Summary Scirtothrips dorsalis is a major pest of vegetable, fruit and ornamental crops in Asia and other areas invaded by this highly invasive species. The use of biocontrol agents will be investigated. All treatments of M. anisopliae and B. bassiana significantly reduced populations of chilli thrips larvae, and were comparable to spinosad (Spintor), which provides excellent control of S. dorsalis larvae. As is typical of species in the genus Scirtothrips, eggs are laid in the youngest tissues of plants, and feeding by adults and larvae can result in extensive cell damage to these developing tissues, leading to leaf and fruit distortion, and flower fall. This group will also receive preliminary training on chemical control, biological control and disinfestations of commodities to be exported. In Japan, Scirtothrips dorsalis is a pest of tea and citrus (Kodomari 1978). General information about Scirtothrips dorsalis (SCITDO) Name Language; Assam thrips: English: chilli thrips: English: flower thrips: English The longevities of both males and females were greater on pepper than on rose. Determine distribution of S. dorsalis in different countries in Caribbean Region. The oviposition period on rose 13.20 d) was longer than on pepper (12.60 d). PROGRESS: 2005/09 TO 2008/09 Distribution data. Family name. PARTICIPANTS: Dr. Matt A. Ciomperlik, Entomologist, USDA,APHIS,PPQ, Pest Detection Diagnostics and Management Laboratory, Moore Air Base, Edinburg, TX was very helpful in conducting studies on St. Vincent, and in conducting surveys for the chilli thrips in Barbados, Guyana and Suriname. Report progress at the annual meetings of the Florida Entomological Society and the Caribbean Food Crops Society. None of the pyrethroid insecticides investigated provided effective control of this pest. During the early season, S. dorsalis appear to colonize a relatively small number of young plants in a field, and since adults move slowly among plants, populations become highly aggregated. Acetamiprid (Assail) applied to the foliage of pepper plants did not provide significant reduction of S. dorsalis in the present study. Origin and Distribution. 2010. A serious pest on castor, S. dorsalis infests shoots, leaves, flowers and young fruits. Since in Florida, the pest is particularly troublesome on landscape plants in urban settings, master gardners, county agents and employees of parks departments need to become familiar with S. dorsalis and how to cope with it. The sizes of all of the developmental stages of S. dorsalis were quite similar on all host plants. Seal et al. The pest's flight activity during the windiest hours of the day facilitates it dispersal by wind. Develop a control method using conventional insecticides labeled for use on fruits, ornamentals and vegetable. A number of nicotinoid and spinosyn insecticides that are highly effective in suppressing chilli thrips populations have been identified. Dr. Ciomperlik also surveyed the infestations found in the Rio Grand Valley and at Houston, TX. In this study, the morphology, distribution, and ultrastructure of the antennal sensilla of the S. dorsalis were examined by using scanning and transmission electron microscopy. Various native biological agents will be identified in each country of Caribbean Basin. Dr. Adam Silagyi, Cooperative Agricultural Pest Surveys, supervised surveys for S. dorsalis in Florida. The presence and distribution of Scirtothrips dorsalis was reported in Colombia in the Andean, Caribbean, and Orinoquia regions, from 0 to 1,200 meters of altitude (MASL) in the warm climate zone, with less than 2,000 mm rainfall per year and a temperature above 24°C, which corresponds to the tropical dry forest life zone (TDF). Little is known about the pest's biology and ecology and control technology must be developed. The entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae proved to be effective in suppressing the pest, as did Tricon, a mixture of natural products.This information has significant bearing on the efforts of the fruit, ornamental and vegetable industries to protect their crops from damage by S. dorsalis infestations. 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