Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-09-15T18:31:27Z No. of bitstreams: 1 2017 - Vinicius Jos? Fernandes.pdf: 1911449 bytes, checksum: be7cc0bc21735a414b6214599fc45adc (MD5) / Made available in DSpace on 2017-09-15T18:31:27Z (GMT). No. of bitstreams: 1 2017 - Vinicius Jos? Fernandes.pdf: 1911449 bytes, checksum: be7cc0bc21735a414b6214599fc45adc (MD5) Previous issue date: 2017-02-14 / CAPES / Termites are well known for their great economic importance as pests of various woods and other cellulosic materials. Among the termites harmful to the urban environment, standing out Coptotermes gestroi (Wasmann) (Blattodea: Rhinotermitidae), a species introduced in Brazil and frequently occurs in the Southeast region, causing incalculable economic losses to cellulosic materials and to living trees. The objectives of this study were to determine the foraging and feeding preference of the C. gestroi in relation to five types of wood (four forest species and MDF), with or without foraging monitoring device (bait-holder), in eight sites distribuited in different neighborhoods of the municipalities of Rio de Janeiro (Campo Grande, Padre Miguel and two sites in Santa Cruz), S?o Gon?alo (two sites in Alc?ntara) and Serop?dica (UFRRJ and Canto do Rio), RJ. These sites were selected because of the high foraging activity of C. gestroi. In each site, wood stakes of Allantoma lineata (Mart ex O. Berg) Miers, Didymopanax morototonii (Aubl.) Dcne. et Planch., Manilkara huberi (Ducke) Cheval., Pinus elliottii Engel. and MDF-Medium Density Fiberboard stakes were buried in the soil inside a PVC pipe and free (without pipes), simultaneously, in a situation of choice, equidistant from each other. The stakes remained buried in the soil for 15, 30, 60 and 90 days (n = 320), 50% within the bait-holder. At the end of each exposition period that the stakes remained in the soil, they were unearthed, the frequency of occurrence of C. gestroi on each stake was determine, and they were taken to the laboratory to determine the weight of the stake to calculate the wood consumption by termites. Forage castes, when present at the stakes, they were collected for conclusive identification. The experimental design adopted was the sub-sub split plot, where each type of wood represented a plot, each exposition period a sub-plot and the use or not of bait-holder a sub-sub plot. The Alc?ntara 2 site was the one that obtained the highest occurrence of C. gestroi foragers in the wood stakes. There was no occurrence of foraging in the stakes by C. gestroi in Alc?ntara 1, Santa Cruz 2 and Serop?dica 1 in all periods of exposure, although there was activity of this termite when the stakes were installed. The termite was able to recruit individuals to forage equally all the stakes of the forest species and the MDF. The longer the exposure time of the buried stakes, the greater the occurrence of C. gestroi and the consumption of the stakes by the termite, except in 30 days, since there could have been disturbances during the previous collection. The P. elliottii stakes were more consumed by C. gestroi followed by those of MDF, which were preferentially more consumed than stakes of D. morototonii and A. lineata. When there was both low and medium density woods in contact with the soil C. gestroi did not consume high density M. huberi wood. There was no difference in the occurrence of foraging and consumption of the stakes of the five types of wood with or without bait holder, indicating that this device facilitates the monitoring without interfering in these activities of C. gestroi. / Os t?rmitas s?o conhecidos por sua grande import?ncia econ?mica como pragas de diversas madeiras e de outros materiais celul?sicos. Em ?rea urbana, destaca-se Coptotermes gestroi (Wasmann) (Blattodea: Rhinotermitidae), esp?cie introduzida no Brasil, com ocorr?ncia frequente na regi?o Sudeste, causando preju?zos econ?micos incalcul?veis a materiais celul?sicos e ?s ?rvores vivas. Este trabalho objetivou determinar o forrageamento e a prefer?ncia alimentar de C. gestroi em rela??o a cinco tipos de madeira (quatro esp?cies floretais e o MDF), com ou sem dispositivo de monitoramento do forrageamento (porta-isca), em oito locais distribu?dois em diferentes bairros dos munic?pios do Rio de Janeiro (Campo Grande, Padre Miguel e dois locais em Santa Cruz), S?o Gon?alo (dois locais em Alc?ntara) e Serop?dica (UFRRJ e Canto do Rio), RJ. Esses locais foram selecionados por apresentar alta atividade de forrageamento de C. gestroi. Em cada local, estacas de madeira de Allantoma lineata (Mart ex O. Berg) Miers, Didymopanax morototonii (Aubl.) Dcne. et Planch., Manilkara huberi (Ducke) Cheval., Pinus elliottii Engel. e estacas de MDF- Medium Density Fiberboard (Painel de Madeira de Densidade M?dia), previamente pesadas, foram enterradas no solo dentro de tubos de PVC e livres (sem tubos), em situa??o de escolha, equidistantes uma das outras. As estacas permaneceram enterradas no solo durante 15, 30, 60 e 90 dias (n=320), sendo 50% dentro do porta-isca. Ap?s cada per?odo de perman?ncia das estacas no solo, estas foram desenterradas, determinou-se a frequ?ncia de ocorr?ncia de C. gestroi em cada estaca e em seguida levadas para o laborat?rio para determina??o do peso para o c?lculo do consumo de madeira pelos t?rmitas. Castas forrageadoras, quando presentes nas estacas, foram coletadas para identifica??o conclusiva. O delineamento experimental adotado foi o de parcela sub-sub dividida, onde cada tipo de madeira representou uma parcela, cada ?poca de avalia??o uma sub-parcela e o uso ou n?o de porta-isca uma sub-sub parcela. O local Alc?ntara 2 foi a que obteve a maior ocorr?ncia de forrageadores de C. gestroi nas estacas de madeira. N?o houve ocorr?ncia de forrageamento nas estacas por C. gestroi em Alc?ntara 1, Santa Cruz 2 e Serop?dica 1 em todos os per?odos de exposi??o, embora existisse atividade desse t?rmita quando da instala??o das estacas. O t?rmita foi capaz de recrutar indiv?duos para forragear igualmente todas as estacas das esp?cies florestais e de MDF. Quanto maior o tempo de exposi??o das estacas enterradas, maior foi a ocorr?ncia de C. gestroi e o consumo das mesmas pelo t?rmita, exceto em 30 dias, pois pode ter ocorrido perturba??es durante a coleta anterior. As estacas de P. elliottii foram mais consumidas por C. gestroi, seguida das de MDF, as quais foram preferencialmente mais consumidas que estacas de D. morototonii e A. lineata. Quando houve simultaneamente madeiras de densidade baixa e m?dia em contato com o solo C. gestroi n?o consomiu a madeira de M. huberi, de densidade alta. N?o houve diferen?a na ocorr?ncia de forrageamento e consumo das estacas dos cinco tipos de madeira com ou sem porta-isca, indicando que este dipositivo facilita o monitoramento sem interferir nessas atividades de C. gestroi.