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. Reddy, and A.M. Ghanekar. In collaboration with f Cooperative Agricultural Pest Survey, we will organize an active surveillance program to detect the pest in south 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. 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. 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.) Develop sampling method for each host crop depending on the distribution of S. dorsalis and identify feeding and reproductive status on those hosts. Scirtothrips dorsalis Hood, 1919. FLORIDA DISTRIBUTION: The current known Florida distribution for Scirtothrips dorsalis is restricted to Palm Beach County. Florida Entomologist 91(1):79-86. Mean numbers of larvae per plant were significantly higher on pepper and on the rose cultivar, Knockout, than on bean, eggplant, squash and tomato. Scientists believe that S. dorsalis originated either in Southeast Asia or in the Indian subcontinent, but it is now widely distributed. In Japan, Scirtothrips dorsalis is a pest of tea and citrus (Kodomari 1978). The duration of the immature stages varied within a narrow range on all host crops. A number of potentially effective predators have already been identified, and their effectiveness in the field will be assessed. Scirtothrips dorsalis has an aggregated distribution in strawberry fields, with highly infested plants next to uninfested healthy plants (Panthi 2020). 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. Biological parameters of Scirtothrips dorsalis (Thysanoptera: Thripidae) on selected hosts. An Overview of Chilli Thrips, Scirtothrips dorsalis (Thysanoptera: Thripidae) Biology, Distribution and Management. Sampling indicated S. dorsalis had not established a Authoritative taxonomic determinations were provided by Dr. G. B. Edwards, Florida Department of Agriculture and Consumer Services. In addition we were unable to pursue much of the planned research on biological controlof S. dorsalis. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. Larval duration was longer than pupal duration irrespective of the host plant. For the purpose of studying distribution patterns of S. 2dorsalis, an area of 332 m 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. 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. Within 'Scotch Bonnet' Pepper Plant Distribution THRIPIDAE, THRIPINAE. A number of nicotinoid and spinosyn insecticides that are highly effective in suppressing chilli thrips populations have been identified. The sizes of all of the developmental stages of S. dorsalis were quite similar on all host plants. Improved sampling methods will be developed to augment direct relative sampling, which entails the collection of parts of plants assess the presence of this insect on host plants. In order to manage S. dorsalis, chemical control will be developed using approaches successfully developed against Thrips palmi. ��d")w�,/�,jY�/����[�G�(HHT� �ߎ�K��,Vq^f�sofy$1��E�Ǐ�2�R�dm�QN~���Ol�r�F���ߖ��x�q�(h�:6gd��}1[,f�~\��n��9����3�����av�����р>^qC��ġ��%ٟv����S�-�g����U���{XL�E����)�� �Z���a��;d�(�w�I�@�`]Lo��o W{g��/cC���_��_>�����bQ���^�`l�x��>R�j�9՛����rA���r̸=���ݞ_�.�n��#���0d��C����%�,�BG/t�����*-nV�o̖�INlϧ� �ǵ(]N��}��g����‰`��׈�Z��úۧ�I� ���dJ�y'p����ũ�N|vw���g?�ÇO 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. Various native biological agents will be identified in each country of Caribbean Basin. Click to download a PDF version of this publication. The net reproduction rate (Ro) was higher on pepper (11.50) than on rose (9.47). 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. Described from Australia (N. fragariae), India (S. dorsalis, S. padmae, H. minutissimus) and Indonesia (A. andreae).Distribution: Originated from Southeast Asia S. dorsalis is widespread between Pakistan, Japan and Australia. TARGET AUDIENCES: The target audiences include professional entomologists in educational, research and regulatory agencies and in private firms which supply advisory services or chemical and biological controls to growers. Moreover, this information will enable growers to use neonicotinoid insecticides more selectively to avoid the decimation of populations of natural enemies. Females oviposited most eggs during 10.00 - 04.00 EST. Species name. Determine distribution of S. dorsalis in different countries in Caribbean Region. Origin and Distribution. 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. Scirtothrips dorsalishas been reported from South Africa and th… 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). 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. 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. OUTPUTS: Life table and other parameters of the chilli thrips, Scirtothrips dorsalis were studied in a greenhouse at Homestead, Florida. Seal et al. APPROACH: To determine the pest's geographical distribution the Ministry of Agriculture of each Caribbean country or Territory will be contacted for permission to conduct a survey for S. dorsalis, or to assist qualified personnel in a given country to carry out the survey. Report progress at the annual meetings of the Florida Entomological Society and the Caribbean Food Crops Society. This may provide information on the feeding and reproductive behavior of S. dorsalis on that species of plant. Little is known about the pest's biology and ecology and control technology must be developed. The risk Scirtothrips dorsalis (Chilli thrips) would pose to California is evaluated below. 2 0 obj << /Length 4445 /Filter /FlateDecode >> stream Family name. The genus Scirtothrips currently includes 100 listed species from various parts of the world. Other types of traps will be evaluated. Mean numbers of pupae were also higher on pepper and Knockout rose than on these other hosts. Data on various studies will be published as peer-reviewed articles. ���ӧϙO˳�W�0�|:cQ���-�ܜUO�/g�[p�.�d�R�����x��jE�>c� Foliar application of dinotefuran (Venom) provided significant reduction of S. dorsalis on pepper. PROGRESS: 2005/09 TO 2008/09 Two manuscripts will be published in refereed journals on the distribution, bionomics and management of S. dorsalis in the Western Hemisphere. 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. Main content area. The longevities of both males and females were greater on pepper than on rose. Their potentiality will be assessed in the laboratory condition. This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. 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. Metarhizium anisopliae (green muscardine fungus) at 227 ml/100 l effectively reduced S. dorsalis adults on cotton. Distribution data. H��W�r����ü��L-g1����ŢM]"�vR�� Scirtothrips dorsalis was first detected in Highlands County, Florida, in 1991. Hosts: polyphagous. Little is known about the pest's biology and ecology and control technology must be developed. Also the use of a number of the less harsh biorational chemicals will be developed. Environmental Entomology 39(5):1389-1398. Immatures, called larvae, look similar to adults but are even smaller and lack wings. Original name and synonyms The preoviposition period on pepper (3.60 d) was the same as on rose. 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. 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). Dr. Adam Silagyi, Cooperative Agricultural Pest Surveys, supervised surveys for S. dorsalis in Florida. : Scirtothrips dorsalis distribution in pepper fields 313 tubing. The oviposition period on rose 13.20 d) was longer than on pepper (12.60 d). 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. 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). %PDF-1.3 %���� 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 dorsalishas been reported from South Africa and the Ivory Coast, and plant quaranti… Scirtothrips dorsalis Hood. on tea in S. India; S. citri (Moult.) Transmission of tomato spotted wilt virus, the causal agent of bud necrosis of peanut, by Scirtothrips dorsalis and Frankliniella schultzei. Climatological potential for Scirtothrips dorsalis (Thysanoptera: Thripidae) establishment in the United States (PDF | 450 KB). REFERENCES: Amin, P.W., D.V.R. Seal et al. 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. The use of biocontrol agents will be investigated. 1981. It has become established on several Caribbean islands and threatens to enter the USA through shipments of peppers, etc. Acetamiprid (Assail) applied to the foliage of pepper plants did not provide significant reduction of S. dorsalis in the present study. Since chilli thrips is of limited distribution in the U.S. and concerns exist for the possibility of new biotype and/or species introductions, USDA-APHIS does not allow plant material infested with chilli thrips to arrive at U.S. ports of entry. Scirtothrips dorsalis Hood Chilli thrips, castor thrips, assam thrips, yellow tea thrips, strawberry thrips. Seal, D.R., W. Klassen, and V. Kumar. The efficient biocontrol agent will be mass reared for inundated release at the beginning of S. dorsalis infestation. Attempts will be made to facilitate adoption of this proven control technologies in the management of fruits, ornamental and vegetable production system. A list of candidate insecticides has been prepared. Larvae and adults of S. dorsalis were found on … Bailey (1945) and Priesner (1932), in their work on Scirtothrips, mention S. dorsalis as a distinct species. Adult S. dorsalis were abundant on pepper and rose and less so on eggplant, and absent on bean, squash and tomato. Scirtothrips dorsalis Hood is a significant pest of various vegetable, ornamental, and fruit crops. Its biology and management are little known in the agro-ecosystems in western hemisphere. In Japan, S. dorsalis is a pest of tea and citrus (Kodomari 1978). The spinosyns, spinosad (SpinTor) and spinetoram (Radiant), when applied to the foliage were highly effective against S. dorsalis larvae and adults. ߶)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. On the otherhand it is not clear why the pest is not yet destructive on tropical fruits in Puerto Rico but not in Florida. 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. It was introduced to Israel and the Caribbean area and is probably spreading in the world by horticultural trade. TriCon (a blend of borax, orange oil and biodegradable surfactants) at 391 ml/100 l also reduced S. dorsalis populations on pepper and cotton. Initially yellow sticky cards will be used to trap and monitor S. dorsalis presence and population densities. The population density was highest during March through June with a peak in April and lowest during January and February. Determine distribution of S. dorsalis in different countries in Caribbean Region. Develop a control method using conventional insecticides labeled for use on fruits, ornamentals and vegetable. Determination host distribution will be informed by previous studies conducted by various researchers in Asia. World distribution of Scirtothrips dorsalis (SCITDO) Continent Country State Status; Africa: Cote d'Ivoire: Present, restricted distribution By Vivek Kumar, Garima Kakkar, Cindy L. McKenzie, Dakshina R. Seal and Lance S. Osborne. The sensory abilities of S. dorsalis are poorly understood although the antennae of adult are known to possess important sensory structures in orther insects. 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). Abstract. Thiamethoxam (Actara) was more effective when used as a foliar application than when applied as a soil drench as Platinum. 2010. Chilli thrips, Scirtothrips dorsalis, are tiny (> 2mm long), cigar-shaped insects. 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. 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). It has become established on several Caribbean islands and threatens to enter the USA through shipments of peppers, etc. 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. Every year, one meeting will be organized in one Caribbean country to share data with various stakeholders including the Caribbean Community Secretariat (CARICOM), USDA-APHIS and the Department of Homeland Security. Imidacloprid provided significant reduction of S.dorsalis when applied as Admire as a soil drench or when applied as Provado to the foliage. Submitted: June 16th 2012 Reviewed: November 13th 2012 Published: March 14th … 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. Scientists believe that Scirtothrips dorsalis originated either in Southeast Asia or in the Indian subcontinent, but it is now widely distributed. 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. 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. Synonyms: Caliothrips minutissimus Faure, 1962 Scirtothrips padmae Ramakrishna, 1942 Scirtothrips andreae Hood, 1935 Neophysopus fragariae Girault, 1927 Anaphothrips oligochaetus Karny, 1925 Anaphothrips andreae Karny, 1925 Scirtothrips dorsalis Hood, 1919 Heliothrips minutissimus Bagnall, 1919 . Sessions may be organized at the annual meetings of the Caribbean Food Crops Society and the Florida Entomological Society. Adults were most active during 10.00 - 04.00 EST. S. dorsalis has the wing cilia straight not wavy, but although the species is now established in Florida and the Caribbean, it has not yet been found in California. 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. Information will also be disseminated through Pest Alert and EDIS. A standard trapping method will be developed, which can be used by others in different locations. This group will also receive preliminary training on chemical control, biological control and disinfestations of commodities to be exported. IMPACT: 2005/09 TO 2008/09 D@b` P�����+�@ Wt*�UK 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. 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). On `Jalapeno' pepper plants BotaniGard ES (Beauveria bassiana) at 0.5 l/100 l at weekly intervals significantly reduced mean numbers of S. dorsalis adults and larvae. Determine an efficient but accurate method of trapping S. dorsalis. Dr. Ciomperlik also surveyed the infestations found in the Rio Grand Valley and at Houston, TX. 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. Within `Scotch Bonnet’ Pepper Plant Distribution : Scirtothrips dorsalis distribution in pepper fields 313 tubing. In each country a group of people will be trained to collect and identify S. dorsalis, and prepare specimens for microscopic examination. This knowledge will be used to identify those hosts in various countries of Caribbean Basin. 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. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. General information about Scirtothrips dorsalis (SCITDO) Name Language; Assam thrips: English: chilli thrips: English: flower thrips: English A new distribution map is provided for Scirtothrips dorsalis Hood (Thysanoptera: Thripidae). Disseminate information to research, extension and regulatory personnel, and also to growers in Florida and Caribbean countries. Osborne, C. Palmer, C. Regelburgge, L. Schmale and D. Schuble. None of the pyrethroid insecticides investigated provided effective control of this pest. The .gov means it’s official.Federal government websites always use a .gov or .mil domain. A serious pest on castor, S. dorsalis infests shoots, leaves, flowers and young fruits. The pest's flight activity during the windiest hours of the day facilitates it dispersal by wind. 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