| phylogeography illuminates maternal origins of exotic coptotermes gestroi (isoptera: rhinotermitidae). | coptotermes gestroi, the asian subterranean termite (ast), is an economically important structural and agricultural pest that has become established in many areas of the world. for the first time, phylogeography was used to illuminate the origins of new found c. gestroi in the us commonwealth of puerto rico; ohio, usa; florida, usa; and brisbane, australia. phylogenetic relationships of c. gestroi collected in indigenous locations within malaysia, thailand, and singapore as well as from the four ... | 2007 | 17254806 |
| permanent genetic resources added to molecular ecology resources database 1 may 2009-31 july 2009. | this article documents the addition of 512 microsatellite marker loci and nine pairs of single nucleotide polymorphism (snp) sequencing primers to the molecular ecology resources database. loci were developed for the following species: alcippe morrisonia morrisonia, bashania fangiana, bashania fargesii, chaetodon vagabundus, colletes floralis, coluber constrictor flaviventris, coptotermes gestroi, crotophaga major, cyprinella lutrensis, danaus plexippus, fagus grandifolia, falco tinnunculus, fle ... | 2009 | 21564933 |
| expanding the knowledge on lignocellulolytic and redox enzymes of worker and soldier castes from the lower termite coptotermes gestroi. | termites are considered one of the most efficient decomposers of lignocelluloses on earth due to their ability to produce, along with its microbial symbionts, a repertoire of carbohydrate-active enzymes (cazymes). recently, a set of pro-oxidant, antioxidant, and detoxification enzymes (pad) were also correlated with the metabolism of carbohydrates and lignin in termites. the lower termite coptotermes gestroi is considered the main urban pest in brazil, causing damage to wood constructions. recen ... | 2016 | 27790186 |
| the coptotermes gestroi aldo-keto reductase: a multipurpose enzyme for biorefinery applications. | in nature, termites can be considered as a model biological system for biofuel research based on their remarkable efficiency for lignocellulosic biomass conversion. redox enzymes are of interest in second-generation ethanol production because they promote synergic enzymatic activity with classical hydrolases for lignocellulose saccharification and inactivate fermentation inhibitory compounds produced after lignocellulose pretreatment steps. | 2017 | 28053664 |
| analysis of the workers head transcriptome of the asian subterranean termite, coptotermes gestroi. | the lower termite, coptotermes gestroi (isoptera: rhinotermitidae), is originally from southeast asia and has become a pest in brazil. the main goal of this study was to survey c. gestroi transcriptome composition. to accomplish this, we sequenced and analyzed 3003 expressed sequence tags (ests) isolated from libraries of worker heads. after assembly, 695 uniests were obtained from which 349 have similarity with known sequences. comparison with insect genomes demonstrated similarity, primarily w ... | 2011 | 21205397 |
| termite resistant properties of sisal fiberboards. | a study was carried out to test sisal (agave sisalana perrine) fiberboards properties as building materials against asian subterranean termite, coptotermes gestroi (wasmann). evaluation was in the laboratory according to the jwpa standard-tw-s.1-1992. to improve mechanical properties of fiberboards made from sisal fibers, the boards were overlaid by rubber veneer, betung bamboo matting or formica. result showed that the formica-overlaid sisal fiberboards performed better than other overlaid fibe ... | 2011 | 26467825 |
| termite infestation associated with type of soil in pulau pinang, malaysia (isoptera: rhinotermitidae). | nine soil samples from nine buildings infested with coptotermes gestroi in pulau pinang, malaysia, were tested for the type of soil texture. the soil texture analysis procedures used the hydrometer method. four of nine buildings (44%) yielded loamy sand-type soil, whereas five of nine buildings (56%) contained sandy loam-type soil. | 2013 | 24575252 |
| comparative study of the resistance of six hawaii-grown bamboo species to attack by the subterranean termites coptotermes formosanus shiraki and coptotermes gestroi (wasmann) (blattodea: rhinotermitidae). | bamboo is widely grown and utilized as a construction material around the world, particularly in the tropics. at present, there are about 70 bamboo species and varieties recorded from hawaii. the objective of our study was to determine the relative resistance of six hawaii-grown bamboo species to attack by coptotermes formosanus shiraki and coptotermes gestroi (wasmann). four-week laboratory feeding trials were performed as described in standard e1-09 of the american wood protection association ... | 2011 | 26467827 |
| ability of field populations of coptotermes spp., reticulitermes flavipes, and mastotermes darwiniensis (isoptera: rhinotermitidae; mastotermitidae) to damage plastic cable sheathings. | a comparative field study was conducted to evaluate the ability of subterranean termites to damage a set of four different plastic materials (cable sheathings) exposed below- and above-ground. eight pest species from six countries were included, viz., coptotermes formosanus (shiraki) in china, japan, and the united states; coptotermes gestroi (wasmann) in thailand and malaysia; coptotermes curvignathus (holmgren) and coptotermes kalshoveni (kemner) in malaysia; coptotermes acinaciformis (froggat ... | 2013 | 23865207 |
| chemical composition, antifeedant, repellent, and toxicity activities of the rhizomes of galangal, alpinia galanga against asian subterranean termites, coptotermes gestroi and coptotermes curvignathus (isoptera: rhinotermitidae). | dual choice bioassays were used to evaluate the antifeedant property of essential oil and methanolic extract of alpinia galanga (l.) (locally known as lengkuas) against two species of termites, coptotermes gestroi (wasmann) and coptotermes curvignathus (holmgren) (isoptera: rhinotermitidae). a 4-cm-diameter paper disc treated with a. galanga essential oil and another treated with either methanol or hexane as control were placed in a petri dish with 10 termites. mean consumption of paper discs (m ... | 2015 | 25688085 |
| feeding response of subterranean termites coptotermes curvignathus and coptotermes gestroi (blattodea: rhinotermitidae) to baits supplemented with sugars, amino acids, and cassava. | feeding responses of subterranean termites coptotermes curvignathus (holmgren) and coptotermes gestroi (wasmann) (blattodea: rhinotermitidae) to bait matrices supplemented with various sugars, amino acids, and cassava were evaluated both in the laboratory and field. the results indicated that the two termite species consumed significantly different amount of filter papers that had been treated with various types and concentrations of sugars and amino acids. based on consumption and survival data ... | 2013 | 24020295 |
| potential hybridization between two invasive termite species, coptotermes formosanus and c. gestroi (isoptera: rhinotermitidae), and its biological and economic implications. | the asian subterranean termite, coptotermes gestroi, is a tropical species but has increasingly been collected from the subtropics in recent years, making it sympatric to the formosan subterranean termite, c. formosanus in at least three areas, taiwan, hawaii, and florida. simultaneous flights by these two species were observed since 2013 in south florida, during which interspecies tandems were observed. laboratory mating of c. formosanus and c. gestroi alates produced hybrid incipient colonies ... | 2017 | 28125068 |
| predicting the geographical distribution of two invasive termite species from occurrence data. | predicting the potential habitat of species under both current and future climate change scenarios is crucial for monitoring invasive species and understanding a species' response to different environmental conditions. frequently, the only data available on a species is the location of its occurrence (presence-only data). using occurrence records only, two models were used to predict the geographical distribution of two destructive invasive termite species, coptotermes gestroi (wasmann) and copt ... | 2014 | 25198370 |
| preferences of coptotermes formosanus shiraki and coptotermes gestroi (wasmann) (blattodea: rhinotermitidae) among three commercial wood species. | the formosan subterranean termite, coptotermes formosanus shiraki, and the asian subterranean termite, coptotermes gestroi (wasmann), are both pests of wood in service in hawaii and florida. we conducted a laboratory study using method modified from those described in standard e1-09 of the american wood protection association (awpa 2009) to assess the termite resistance of three commercially available wood species used in regions of the usa where both termite species occur: douglas fir, pseudots ... | 2011 | 26467829 |
| interspecific competition and territory defense mechanisms of coptotermes formosanus and coptotermes gestroi (isoptera: rhinotermitidae). | coptotermes formosanus shiraki and c. gestroi (wasmann) are the most widely distributed species of the genus and occur sympatrically in the subtropics. results of two bioassays in the current study showed that c. gestroi was more aggressive than c. formosanus. in the petri-dish bioassays, c. gestroi won most of the agonistic encounters over c. formosanus. in the two-dimensional foraging arena bioassays, over 73% tunnel interceptions observed in the 18 replications were caused by progressing tunn ... | 2010 | 22546458 |
| spatial association of marine dockage with land-borne infestations of invasive termites (isoptera: rhinotermitidae: coptotermes) in urban south florida. | marine vessels have been implicated in the anthropogenic dispersal of invasive termites for the past 500 yr. it has long been suspected that two invasive termites, the formosan subterranean termite, coptotermes formosanus shiraki, and coptotermes gestroi (wasmann) (isoptera: rhinotermitidae), were introduced to and dispersed throughout south florida by sailboats and yachts. we compared the distances between 190 terrestrial point records for formosan subterranean termite, 177 records for c. gestr ... | 2010 | 20857745 |
| genetic relationship between coptotermes gestroi and coptotermes vastator (isoptera: rhinotermitidae). | the phylogenetic relationship of coptotermes gestroi (wasmann) and coptotermes vastator light (isoptera: rhinotermitidae) was determined using dna sequence comparisons of mitochondrial genes. partial sequences of the ribosomal rna small subunit 12s, ribosomal rna large subunit 16s, and mitochondrial coii were obtained from nine populations of c. gestroi from south east asia (malaysia, singapore, thailand, and indonesia) and four populations of c. vastator from the philippines and hawaii. in addi ... | 2007 | 17461072 |
| naturalization and control of coptotermes gestroi (blattodea: rhinotermitidae) in a taiwanese forest. | coptotermes gestroi(wasmann), an invasive termite species in taiwan, has been a major structural pest in southwestern taiwan.c. gestroiwas recently reported to have infested living trees in a taiwanese forest, showing its potential of becoming an invasive forest pest in taiwan. to determine whetherc. gestroihave naturalized in the forests, we monitored their dispersal flights and estimated their colony development status on the basis of their worker and soldier morphology. the results showed tha ... | 2016 | 27016598 |
| tarsomere and distal tibial glands: structure and potential roles in termites (isoptera: rhinotermitidae, termitidae). | social insects have numerous exocrine glands, but these organs are understudied in termites compared to hymenopterans. the tarsomere and distal tibial glands of the termites heterotermes tenuis, coptotermes gestroi and silvestritermes euamignathus were investigated by scanning and transmission electron microscopy. pore plates are visible in scanning micrographs on the distal tibial surfaces and on the ventral surface of the first and second tarsomeres of workers of h. tenuis and c. gestroi. in c ... | 2015 | 26362010 |
| rehydration after water stress in forager workers of coptotermes gestroi (wasmann) (blattaria: rhinotermitidae). | water maintenance is vital for termite survival under dry conditions, hence environment humidity is one of the most important factors that controls the distribution of isoptera. to understand the dynamics of termite rehydration after water loss, two bioassays were performed with forager workers of coptotermes gestroi (wasmann) submitted to water stress. insects were weighed and placed into petri dishes without water and food for periods of 3, 15, and 30 h. for each period of water stress, 10 rep ... | 2015 | 26013276 |
| subterranean termites in urban forestry: tree preference and management. | urban tree deterioration is a common problem all over the world. inappropriate plant species choice and inadequate planting may lead to micro and macro organism attacks, such as pests and diseases. subterranean termite damage is common and may promote tree falls. in order to help urban forestry planning, this work was carried out for 9 years on 1477 street trees in a neighborhood in the city of são paulo, brazil. plants were identified to species, grouped as native, exotic plants, and palm trees ... | 2015 | 26013137 |
| evaluation of growth and foraging in laboratory colonies of coptotermes gestroi (isoptera, rhinotermitidae). | coptotermes gestroi is an exotic species in brazil that forages on several food items at the same time. different laboratory tests were performed with 6-year-old colonies of this termite in order to follow the development and displacement of these colonies, considering which castes and instars were transferred or moved from their original chamber. two bioassays were carried out, one with similar alternative foods (pinus sp. sawdust), and the other with different alternative foods (large block of ... | 2015 | 25795098 |
| toxicity and transmission of thiamethoxam in the asian subterranean termite coptotermes gestroi (isoptera: rhinotermitidae). | the toxicity and horizontal transmission of thiamethoxam was evaluated in the workers of the asian subterranean termite coptotermes gestroi wasmann (isoptera: rhinotermitidae). brief exposure to sand treated with thiamethoxam at concentration ranging from 0.25 to 50βµg/ml resulted in a dose-dependent mortality in c. gestroi. sand treated with 50βµg/ml thiamethoxam resulted in very high mortality within 30-60βmin of exposure. termites exposed to sand treated with 0.25-25βµg/ml exhibited delayed t ... | 2014 | 25502030 |
| mortality patterns in coptotermes gestroi (blattodea: rhinotermitidae) following horizontal transfer of nonrepellent and repellent insecticides: effects of donor:recipient ratio and exposure time. | the donor: recipient ratio and the time of donor exposure to termiticide required for maximal toxicant transfer among termites are crucial information for the development of termite management plans. most of the available information on termiticide toxicity came from temperate zonal termite species, whereas little is known about tropical asian species. in this study, mortality patterns of recipient termites, coptotermes gestroi (wasmann) subjected to seven formulated insecticide exposures under ... | 2014 | 25195449 |
| trehalase activity in fungus-growing termite, odontotermes feae (isoptera: termitideae) and inhibitory effect of validamycin. | trehalase is the hydrolytic enzyme that catalyzed the hydrolysis of trehalose to glucose. in this study, trehalase activity in the fungus-growing termite, odontotermes feae wasmann had been examined. trehalase activity in digestive tract and carcass of o. feae was higher than that in wood-feeding termite, coptotermes gestroi wasmann. the intestinal tract of worker caste of o. feae was the main source of trehalase compared with that in salivary, fat body, and carcass. in particular, the highest a ... | 2014 | 25026686 |
| mining biomass-degrading genes through illumina-based de novo sequencing and metagenomic analysis of free-living bacteria in the gut of the lower termite coptotermes gestroi harvested in vietnam. | the 5.6 gb metagenome of free-living microbial flora in the gut of the lower termite coptotermes gestroi, harvested in vietnam, was sequenced using illumina technology. genes related to biomass degradation were mined for a better understanding of biomass digestion in the termite gut and to identify lignocellulolytic enzymes applicable to biofuel production. the sequencing generated 5.4 gb of useful reads, containing 125,431 orfs spanning 78,271,365 bp, 80% of which was derived from bacteria. the ... | 2014 | 24928651 |
| haplotype-habitat associations of coptotermes gestroi (termitoidae: rhinotermitidae) from mitochondrial dna genes. | coptotermes gestroi (wasmann) or the asian subterranean termite is a serious structural pest in urban settlements in southeast asia that has been introduced to other parts of the world through human commerce. although mitochondrial dna markers were previously used to shed light on the dispersal history of the asian subterranean termite, there were limited attempts to analyze or include populations of the termite found in the wild in southeast asia. in this study, we analyzed the 16s ribosomal rn ... | 2014 | 24915136 |
| foraging in subterranean termites (isoptera: rhinotermitidae): how do heterotermes tenuis and coptotermes gestroi behave when they locate equivalent food resources? | a previous research suggests that when subterranean termites locate equivalent food they consume the initial food resource. however, little is known about the movement of foragers among these food sources. for this reason, this study analyzed the feeding behavior of heterotermes tenuis and coptotermes gestroi in the presence of equivalent foods. the experimental arenas were composed of a release chamber connected to food chambers. the consumption of each wood block and percentage of the foraging ... | 2014 | 24783950 |
| thermal modification of rubberwood to increase its resistance against asian subterranean termites. | the potential of thermal modification to improve the resistance of rubberwood to asian subterranean termites coptotermes gestroi (wasmann) (isoptera: rhinotermitidae) was studied. the rubberwood samples were dried at 185, 200 or 215 °c until constant weight before termite tests. the choice experiment in the field had three months duration. the results indicated that drying at 215 °c gave rubberwood the best resistance to c. gestroi infestation among these samples, with the lowest relative loss o ... | 2014 | 26084107 |
| deciphering the synergism of endogenous glycoside hydrolase families 1 and 9 from coptotermes gestroi. | termites can degrade up to 90% of the lignocellulose they ingest using a repertoire of endogenous and symbiotic degrading enzymes. termites have been shown to secrete two main glycoside hydrolases, which are gh1 (ec 3.2.1.21) and gh9 (ec 3.2.1.4) members. however, the molecular mechanism for lignocellulose degradation by these enzymes remains poorly understood. the present study was conducted to understand the synergistic relationship between gh9 (cgeg1) and gh1 (cgbg1) from coptotermes gestroi, ... | 2013 | 23917163 |
| effects of termiticide exposure on mutual interactions between the treated and untreated workers of the asian subterranean termite coptotermes gestroi. | mutual interactions, including reciprocal food sharing and grooming between chlorantraniliprole- and fipronil-treated, and untreated asian subterranean termites, coptotermes gestroi (wasmann), were examined using rubidium as a tracer. two questions were addressed in this study: (1) after insecticide treatment, does the mutual interaction between termiticide-treated termites and untreated nestmates increase? (2) does the nutritional status of both termiticide-treated termites and untreated nestma ... | 2014 | 23554339 |
| predicting habitat suitability of coptotermes gestroi (isoptera: rhinotermitidae) with species distribution models. | coptotermes gestroi (wasmann) is an important structural pest reported from asia, pacific islands, north america, caribbean islands, south america, and indian ocean islands. this study summarized previous records of c. gestroi and its synonyms, presenting 184 infested counties from 24 countries. based on the geo-references occurrence locations and global raster data of climate, geography, and human population, c. gestroi were found most commonly in warm, high precipitation, low altitude, and hum ... | 2013 | 23448046 |
| effect of eucalyptus wood vinegar on rubberwood infestation by asian subterranean termite, coptotermes gestroi isoptera: rhinotermitidae). | wood degradation caused by fungi, termites, and insects, is a major problem for the rubberwood industry. the potential of wood vinegar as rubberwood preservative was studied. the infestation rates of coptotermes gestroi (wasmann) (isoptera: rhinotermitidae) on rubberwood samples treated with 25%, 50% and 100% eucalyptus wood vinegar for 24 hours were observed in laboratory conditions. both non-choice and choice experiments were included. the effects of eucalyptus wood vinegar treatment depended ... | 2013 | 25145252 |
| antennal cropping during colony foundation in termites. | the literature on pairing and mating behavior in termites indicates that a number of distal antennal segments in dealates of both sexes are often removed during colony foundation, with terms such as amputation, mutilation and cannibalism typically employed to report the phenomenon. here we propose the use of the phrase 'antennal cropping' to describe the behavior, and assess naturally occurring levels of its occurrence by comparing the number of antennal segments in museum specimens of alates an ... | 2011 | 22287897 |
| functional characterization and target discovery of glycoside hydrolases from the digestome of the lower termite coptotermes gestroi. | lignocellulosic materials have been moved towards the forefront of the biofuel industry as a sustainable resource. however, saccharification and the production of bioproducts derived from plant cell wall biomass are complex and lengthy processes. the understanding of termite gut biology and feeding strategies may improve the current state of biomass conversion technology and bioproduct production. | 2011 | 22081966 |
| toxicity and horizontal transfer of chlorantraniliprole against the asian subterranean termite coptotermes gestroi (wasmann): effects of donor:recipient ratio, exposure duration and soil type. | the effectiveness of chlorantraniliprole and other insecticides (bifenthrin, fipronil, indoxacarb, imidacloprid and chlorfenapyr) were tested against coptotermes gestroi (wasmann). four experiments were conducted: a topical bioassay, a horizontal transfer study, an insecticide bioavailability test and a feeding bioassay. | 2012 | 22076820 |
| intra- and interspecific agonistic behavior of the subterranean termite microcerotermes crassus (isoptera: termitidae). | the aim of our study was to investigate the intra- and interspecific agonistic behaviors exhibited by the worker and soldier castes of the subterranean termite microcerotermes crassus snyder (isoptera: termitidae). aggression between m. crassus colonies from different field locations and also against three termite species--coptotermes gestroi (wasmann), globitermnes sulphureus haviland, and odontotermes sp.--were observed in the laboratory. termite responses were tested in paired combination of ... | 2010 | 21061976 |
| coptotermes gestroi (isoptera: rhinotermitidae) in brazil: possible origins inferred by mitochondrial cytochrome oxidase ii gene sequences. | the asian subterranean termite, coptotermes gestroi, originally from northeast india through burma, thailand, malaysia, and the indonesian archipelago, is a major termite pest introduced in several countries around the world, including brazil. we sequenced the mitochondrial coii gene from individuals representing 23 populations. phylogenetic analysis of coii gene sequences from this and other studies resulted in two main groups: (1) populations of cleveland (usa) and four populations of malaysia ... | 2010 | 20924414 |
| influence of different substrate moistures on wood consumption and movement patterns of microcerotermes crassus and coptotermes gestroi (blattodea: termitidae, rhinotermitidae). | moisture is an important physical factor for the survival of termites. the effects of different moisture levels (0, 5, 10, 15, 20, and 25%) of a sand substrate on the behavior of laboratory groups of microcerotermes crassus snyder and coptotermes gestroi (wasmann) (blattodea: termitidae: rhinotermitidae) were evaluated. moisture content of sand affected wood consumption and influenced termite distribution across a moisture gradient for m. crassus. changing the moisture parameters affected the lo ... | 2010 | 20429460 |
| record of a gregarine (apicomplexa: neogregarinida) in the abdomen of the termite coptotermes gestroi (isoptera, rhinotermitidae). | coptotermes gestroi is an exotic species of termite that is a pest of great economical importance in brazil. this paper relates the occurrence of a coelomic gregarine (apicomplexa: neogregarinida) in the abdomen of the foraging workers recently collected from field colonies of this termite. the termite hosts presented large, white abdomens because they carried 1 up to 3 cysts of gregarines filled with numerous lemon-shaped spores. earlier developmental stages of this gregarine were not observed ... | 2008 | 17888946 |
| morphology of the sternal gland in workers of coptotermes gestroi (isoptera, rhinotermitidae). | the sternal gland is considered the only source of trail pheromones in termites. the morphology of the sternal gland was investigated in workers of coptotermes gestroi using transmission and scanning electron microscopy. the results showed a small bilobed gland at the anterior part of the fifth abdominal sternite. the cuticular surface of the sternal gland showed a v-shaped structure with two peg sensilla in elevated socket and various campaniform sensilla. pores and cuticular scale-like protube ... | 2006 | 16458523 |
| effect of biotic and abiotic factors on the tunneling behavior of coptotermes gestroi and heterotermes tenuis (isoptera: rhinotermitidae). | using bidimensional arenas, the construction and spatial dispersion of tunnels constructed by coptotermes gestroi and heterotermes tenuis (rhinotermitidae) was determined under different laboratory conditions. workers of both species showed an increase of the tunneled area with the rise in temperature. the activity of workers of c. gestroi also increased with the rise in soil moisture. primary tunnels showed a high degree of dispersion in the arenas for all treatments. the presence of food did n ... | 2005 | 15927416 |
| neotenic formation in laboratory colonies of the termite coptotermes gestroi after orphaning. | the termite coptotermes gestroi (wasmann 1896) (rhinotermitidae: coptotermitinae) is an exotic species in brazil and information concerning its reproductive developmental biology is scarce. we induced the formation of neotenics in laboratory colonies through orphaning experiments. orphaning experiments were conducted in three-year old colonies of c. gestroi kept under laboratory conditions. after three months, eight nymphoid neotenics were observed in one colony after queen removal. histological ... | 2004 | 15861226 |