Females oviposited most eggs during 10.00 - 04.00 EST. Reddy, and A.M. Ghanekar. Sampling indicated S. dorsalis had not established a 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. Thiamethoxam (Actara) was more effective when used as a foliar application than when applied as a soil drench as Platinum. This may provide information on the feeding and reproductive behavior of S. dorsalis on that species of plant. ߶)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. Chilli thrips, Scirtothrips dorsalis, are tiny (> 2mm long), cigar-shaped insects. Imidacloprid provided significant reduction of S.dorsalis when applied as Admire as a soil drench or when applied as Provado to the foliage. Information will also be disseminated through Pest Alert and EDIS. Little is known about the pest's biology and ecology and control technology must be developed. Adults were most active during 10.00 - 04.00 EST. Various native biological agents will be identified in each country of Caribbean Basin. Family name. 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.) 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. In Japan, S. dorsalis is a pest of tea and citrus (Kodomari 1978). It was introduced to Israel and the Caribbean area and is probably spreading in the world by horticultural trade. Scirtothrips dorsalis Hood Chilli thrips, castor thrips, assam thrips, yellow tea thrips, strawberry thrips. 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. ��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
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���dJ�y'p����ũ�N|vw���g?�ÇO TriCon (a blend of borax, orange oil and biodegradable surfactants) at 391 ml/100 l also reduced S. dorsalis populations on pepper and cotton. In addition we were unable to pursue much of the planned research on biological controlof S. dorsalis. Scientists believe that Scirtothrips dorsalis originated either in Southeast Asia or in the Indian subcontinent, but it is now widely distributed. ... S. Ludwig, L.S. Scirtothrips dorsalis was first detected in Highlands County, Florida, in 1991. Transmission of tomato spotted wilt virus, the causal agent of bud necrosis of peanut, by Scirtothrips dorsalis and Frankliniella schultzei. Its biology and management are little known in the agro-ecosystems in western hemisphere. The spinosyns, spinosad (SpinTor) and spinetoram (Radiant), when applied to the foliage were highly effective against S. dorsalis larvae and adults. It has become established on several Caribbean islands and threatens to enter the USA through shipments of peppers, etc. ���ӧϙO˳�W�0�|:cQ���-�ܜUO�/g�[p�.�d�R�����x��jE�>c� Abstract. 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. A standard trapping method will be developed, which can be used by others in different locations. A list of candidate insecticides has been prepared. We investigated distribution patterns of S. dorsalis in fields and plants of âScotch Bonnetâ pepper, Capsicum chinense Jacq., on St. Vincent in 2004 and 2005. Attempts will be made to facilitate adoption of this proven control technologies in the management of fruits, ornamental and vegetable production system. IMPACT: 2005/09 TO 2008/09 Scirtothrips dorsalis Hood is a significant pest of various vegetable, ornamental, and fruit crops. Immatures, called larvae, look similar to adults but are even smaller and lack wings. FLORIDA DISTRIBUTION: The current known Florida distribution for Scirtothrips dorsalis is restricted to Palm Beach County. 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. Click to download a PDF version of this publication. 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. The sensory abilities of S. dorsalis are poorly understood although the antennae of adult are known to possess important sensory structures in orther insects. Foliar application of dinotefuran (Venom) provided significant reduction of S. dorsalis on pepper. Data on various studies will be published as peer-reviewed articles. Moreover, this information will enable growers to use neonicotinoid insecticides more selectively to avoid the decimation of populations of natural enemies. Osborne, C. Palmer, C. Regelburgge, L. Schmale and D. Schuble. Within 'Scotch Bonnet' Pepper Plant Distribution Florida Entomologist 91(1):79-86. 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. 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. Determine an efficient but accurate method of trapping S. dorsalis. 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). REFERENCES: Amin, P.W., D.V.R. 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. General information about Scirtothrips dorsalis (SCITDO) Name Language; Assam thrips: English: chilli thrips: English: flower thrips: English The population density was highest during March through June with a peak in April and lowest during January and February. 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. On the otherhand it is not clear why the pest is not yet destructive on tropical fruits in Puerto Rico but not in Florida. 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. In collaboration with f Cooperative Agricultural Pest Survey, we will organize an active surveillance program to detect the pest in south Florida. The net reproduction rate (Ro) was higher on pepper (11.50) than on rose (9.47). 1981. PROGRESS: 2005/09 TO 2008/09 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. Determine distribution of S. dorsalis in different countries in Caribbean Region. Scientists believe that S. dorsalis originated either in Southeast Asia or in the Indian subcontinent, but it is now widely distributed. Larval duration was longer than pupal duration irrespective of the host plant. 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. Seal, D.R., W. Klassen, and V. Kumar. Develop sampling method for each host crop depending on the distribution of S. dorsalis and identify feeding and reproductive status on those hosts. 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 . 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. Climatological potential for Scirtothrips dorsalis (Thysanoptera: Thripidae) establishment in the United States (PDF | 450 KB). : Scirtothrips dorsalis distribution in pepper fields 313 tubing. Origin and Distribution. 2 0 obj
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In Japan, Scirtothrips dorsalis is a pest of tea and citrus (Kodomari 1978). on tea in S. India; S. citri (Moult.) This knowledge will be used to identify those hosts in various countries of Caribbean Basin. Mean numbers of pupae were also higher on pepper and Knockout rose than on these other hosts. THRIPIDAE, THRIPINAE. The genus Scirtothrips currently includes 100 listed species from various parts of the world. Acetamiprid (Assail) applied to the foliage of pepper plants did not provide significant reduction of S. dorsalis in the present study. Develop a control method using conventional insecticides labeled for use on fruits, ornamentals and vegetable. Report progress at the annual meetings of the Florida Entomological Society and the Caribbean Food Crops Society. Scirtothrips dorsalis has an aggregated distribution in strawberry fields, with highly infested plants next to uninfested healthy plants (Panthi 2020). Mean numbers of larvae per plant were significantly higher on pepper and on the rose cultivar, Knockout, than on bean, eggplant, squash and tomato. Hosts: polyphagous. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. Scirtothrips dorsalis Hood. In each country a group of people will be trained to collect and identify S. dorsalis, and prepare specimens for microscopic examination. Their potentiality will be assessed in the laboratory condition. 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 dorsalishas been reported from South Africa and the Ivory Coast, and plant quaranti⦠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. Distribution of Scirtothrips Dorsalis in the Carribbean Region and the Development of Chemical and Biological Methods to Manage this Pest. Original name and synonyms The efficient biocontrol agent will be mass reared for inundated release at the beginning of S. dorsalis infestation. 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. A serious pest on castor, S. dorsalis infests shoots, leaves, flowers and young fruits. By Vivek Kumar, Garima Kakkar, Cindy L. McKenzie, Dakshina R. Seal and Lance S. Osborne. The oviposition period on rose 13.20 d) was longer than on pepper (12.60 d). None of the pyrethroid insecticides investigated provided effective control of this pest. The adults are pale in color with black, feathery wings and dark spots forming incomplete stripes on the top of the abdomen. 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). 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). 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. 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. 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. OUTPUTS: Life table and other parameters of the chilli thrips, Scirtothrips dorsalis were studied in a greenhouse at Homestead, Florida. %PDF-1.3
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: Scirtothrips dorsalis distribution in pepper ï¬elds 313 tubing. Submitted: June 16th 2012 Reviewed: November 13th 2012 Published: March 14th ⦠The duration of the immature stages varied within a narrow range on all host crops. A number of nicotinoid and spinosyn insecticides that are highly effective in suppressing chilli thrips populations have been identified. 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. Initially yellow sticky cards will be used to trap and monitor S. dorsalis presence and population densities. World distribution of Scirtothrips dorsalis (SCITDO) Continent Country State Status; Africa: Cote d'Ivoire: Present, restricted distribution 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. 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. Biology and distribution. Adult S. dorsalis were abundant on pepper and rose and less so on eggplant, and absent on bean, squash and tomato. 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. 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). The pest's flight activity during the windiest hours of the day facilitates it dispersal by wind. H��W�r����ü��L-g1����ŢM]"�vR�� The .gov means it’s official.Federal government websites always use a .gov or .mil domain. Little is known about the pest's biology and ecology and control technology must be developed. The preoviposition period on pepper (3.60 d) was the same as on rose. The sizes of all of the developmental stages of S. dorsalis were quite similar on all host plants. Determination host distribution will be informed by previous studies conducted by various researchers in Asia. Also the use of a number of the less harsh biorational chemicals will be developed. 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Or in the United States ( PDF | 450 KB ), this information enable... Must be developed biological Methods to manage S. dorsalis biorational chemicals will be used to those... Dorsalishas been reported from South Africa and the Florida Entomological Society published as peer-reviewed articles a PDF version this! Stages varied within a narrow range on all host Crops a number of the insecticides. 3.60 d ) was higher on pepper and Knockout rose than on these other hosts the biocontrol...