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Search Results: 1 - 10 of 11959 matches for " Alvimar;Garcia "
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Ocorrência de Argyrotaenia sphaleropa (Meyrick) (Lepidoptera: Tortricidae) danificando pêssegos na Serra Gaúcha, Rio Grande do Sul
Botton, Marcos;Bavaresco, Alvimar;Garcia, Mauro S.;
Neotropical Entomology , 2003, DOI: 10.1590/S1519-566X2003000300020
Abstract: during the 2000/2001 season, the polyphagous leafroller argyrotaenia sphaleropa (meyrick) caused damage in commercial peach orchards, in rio grande do sul, brazil. caterpillars scrape the fruit epidermis, mainly at the insertion of the stalk or in the junction of the leaves and fruits, depreciating them commercially. despite conventional chemical treatments, losses were around 2%; however, many growers have mistaken the a. sphaleropa damage as caused by grapholita molesta (busck), and have used insecticides to control the last one.
Controle químico da Argyrotaenia sphaleropa (Meyrick) (Lepidoptera: Tortricidae) e da Hypocala andremona (Stoll) (Lepidoptera: Noctuidae) em laboratório
Bavaresco, Alvimar;Botton, Marcos;Garcia, Mauro Silveira;Zanardi, Odimar Zanuzo;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000300001
Abstract: hypocala andremona (stoll) (lepidoptera: noctuidae) and argyrotaenia sphaleropa (meyrick) (lepidoptera: tortricidae) are the main insect-pests of the persimmon in the serra gaúcha region, state of rio grande do sul (rs). no informations are available about chemical control of these caterpillars. the effect of acephate, emmamectin benzoate (+ mineral oil), clorpyriphos-ethyl, spinosad, etofenprox, fenitrothion, fosmet, methoxyfenozide, tiacloprid and trichlorphon on h. andremona and a. sphaleropa were evaluated in laboratory. acephate (g.a.i.100 l-1) (37.5 and 75.0), emmamectin benzoate (0.375 and 0.5), clorpyriphos-ethyl (45.0 and 67.5), spinosad (4.8 and 9.6), etofenprox (10.0 and 15.0), fenitrothion (75.0), methoxyfenozide (14.4) and trichlorphon (120,0 and 150,0) resulted in a mortality of a. sphaleropa higher than 80.0%. for h. andremona, this effect was observed to acephate (37.5 and 75.0), emmamectin benzoate (0.375 and 0.5), clorpyriphos-ethyl (45.0 and 67.5), spinosad (4.8 and 9.6), etofenprox (10.0 and 15.0), fenitrothion (50.0 and 75.0), fosmet (50.0 and 100.0), methoxyfenozide (9.6 and 14.4) and trichlorphon (120.0 and 150.0). these insecticides showed potential to control caterpillars in the persimmon culture, being necessary field evaluations to use the compounds in commercial orchards.
Controle químico da Argyrotaenia sphaleropa (Meyrick) (Lepidoptera: Tortricidae) e da Hypocala andremona (Stoll) (Lepidoptera: Noctuidae) em laboratório
Bavaresco Alvimar,Botton Marcos,Garcia Mauro Silveira,Zanardi Odimar Zanuzo
Ciência Rural , 2006,
Abstract: A Hypocala andremona (Stoll) (Lepidoptera: Noctuidae) e a Argyrotaenia sphaleropa (Meyrick) (Lepidoptera: Tortricidae) s o as principais pragas do caquizeiro na Serra Gaúcha contudo, há poucas informa es sobre o controle químico dessas lagartas. Neste trabalho, avalia-se a eficácia dos inseticidas: acefato, benzoato de emamectina (+ óleo mineral), clorpirifós-etil, espinosade, etofemproxi, fenitrotiona, fosmete, metoxifenozida, tiacloprido e triclorfom no controle da A. sphaleropa e da H. andremona em laboratório. Os inseticidas (em gramas de ingrediente ativo por 100 litros de água - g i.a. 100L-1) acefato (37,5 e 75,0), benzoato de emamectina (0,375 e 0,5), clorpirifós-etil (45,0 e 67,5), espinosade (4,8 e 9,6), etofemproxi (10,0 e 15,0), fenitrotiona (75,0), metoxifenozida (14,4) e triclorfom (120,0 e 150,0) resultaram em mortalidade superior a 80,0% entre as lagartas de A. sphaleropa. Em rela o à H. andremona, observou-se que o acefato (37,5 e 75,0), o benzoato de emamectina (0,375 e 0,5), o clorpirifós-etil (45,0 e 67,5), o espinosade (4,8 e 9,6), o etofemproxi (10 e 15,0), a fenitrotiona (50 e 75,0), o fosmete (50,0 e 100,0), a metoxifenozida (9,6 e 14,4) e o triclorfom (120,0 e 150,0) causaram mortalidade superior a 80%. Esses inseticidas apresentaram elevada eficiência em laboratório e características desejáveis para uso no manejo de lagartas do caquizeiro. No entanto, para validar o seu emprego em pomares comerciais é necessária avalia o de campo.
Atra??o de machos da lagarta-das-fruteiras Argyrotaenia sphaleropa (Meyrick) (Lepidoptera: Tortricidae) aos componentes do ferom?nio sexual sintético na cultura do caquizeiro
Bavaresco, Alvimar;Nu?ez, Saturnino;Garcia, Mauro S.;Botton, Marcos;Sant'Ana, Josué;
Neotropical Entomology , 2005, DOI: 10.1590/S1519-566X2005000400013
Abstract: argyrotaenia sphaleropa (meyrick) has been leading to significative damage in cultivated fruits such as persimmon, peach and grape in southern brazil. in the present work, the response of a. sphaleropa males to different formulations and doses of the synthetic sexual pheromone was evaluated, as well as the duration of the most efficient formulations under field conditions. formulations containing z11,13-14ac + z11,13-14al + z11-14al (4:4:1), z11,13-14al + z11,13-14ac (9: 1) and z11,13-14ac + z11,13-14al (9: 1) (1.0 mg/ dispenser) were the most efficient as male attractants when compared to unmated females. the concentration of 1.0 mg/ dispenser was significantly more attractive than the 0.1 mg/ dispenser for the three formulations. the formulation z11,13-14ac + z11,13-14al + z11-14al (4:4:1), at 1.0 mg/dispenser, was efficient for at least 75 days, while the attractiveness of z11,13-14ac + z11,13-14al (9:1) lasted 60 days. further field experiments should employ the formulation z11,13-14ac + z11,13-14al + z11-14al (4:4:1) at 1.0 mg/dispenser, being dispensers replaced at 75-days intervals.
Adequa??o de uma dieta artificial para a cria??o de Spodoptera cosmioides (Walk.) (Lepidoptera: Noctuidae) em laboratório
Bavaresco, Alvimar;Garcia, Mauro S.;Grützmacher, Anderson D.;Ringenberg, Rudiney;Foresti, Josemar;
Neotropical Entomology , 2004, DOI: 10.1590/S1519-566X2004000200005
Abstract: the biology of spodoptera cosmioides (walk.) was studied on three artificial diets with different protein sources (d1 = white bean, yeast extract, soybean flour, powder milk and wheat germ; d2 = 'carioca' bean and yeast extract; d3 = corn flour, wheat germ and yeast extract). the objective of this research was to determine the most suitable diet for mass rearing s. cosmioides in laboratory. the species is highly polyphagous, and for this reason we hypothesized that diets that are suitable for other lepidoptera can allow its development and fulfill the minimum requirements of biological quality, quantity and economy. although s. cosmioides has completed the biological cycle on the three diets, the d1 was the most suitable for its rearing and produced the fastest development, higher total survival and pupae weight, as well as higher net reproduction rate (ro), intrinsic rate of natural increase (rm) and finite rate of natural increase (l). the number of instars varied from six to seven, predominating six in d1 and d3; in d2, half the population presented six instars and half seven. females presented pupae duration significantly lower that the males in all diets, thus emerging earlier. adult longevity was not affected by the diets, while total fecundity was higher in d1 and d2. in conclusion, the diet 1 is recommended to mass rearing s. cosmioides in the laboratory.
Biologia e exigências térmicas de Spodoptera cosmioides (Walk.) (Lepidoptera: Noctuidae)
BAVARESCO, ALVIMAR;GARCIA, MAURO S.;GRüTZMACHER, ANDERSON D.;FORESTI, JOSEMAR;RINGENBERG, RUDINEY;
Neotropical Entomology , 2002, DOI: 10.1590/S1519-566X2002000100007
Abstract: the biology of spodoptera cosmioides (walk.) was studied under different temperatures and its thermal requirements were determined, aiming to aid the rearing of this insect in the laboratory. embryonic and post-embryonic periods were evaluated at seven different temperatures (14, 18, 22, 25, 28, 30 and 32oc) under environmental chamber conditions, with 14h photophase. the caterpillars were reared on an artificial diet containing white bean, soybean meal, yeast extract, wheat germ and powder milk as source of protein. the extent of the embryonic period decreased with the increase of temperature within the 14oc to 25oc temperature range, remaining constant between 28oc and 32oc. for the other phases (caterpillar, pre-pupa and pupa) an inverse relationship between temperature and duration was observed within the 14oc to 30oc temperature range, extending to 32°c for pupae. duration of pupal phase for males was larger than for females resulting in asynchronous adult emergence. the temperature thresholds for the embryonic, larval, pre-pupal, pupal periods and total cycle were 9.34oc, 11.65oc, 9.65oc, 11.08oc and 11.23oc, with thermal constants of 62,73 degree-days (dd), 254.61dd, 33.42dd, 177.55dd and 525.11dd, respectively. evaluating the pupal phase alone, the threshold temperatures were 11.25oc for males and 10.81oc for females, with thermal constants of 188.26dd for males and 165.47dd for females. for total cycle, the threshold temperature and the thermal constant for males were 11.28oc and 535.85dd, whereas for females the same variables had values of 11.15oc and 513.17dd. so, the most adequate temperature for the development of s. cosmioides is within the range of 25oc and 28oc, where 9.6 to 11.7 generations of the insect can be annually obtained, in laboratory conditions.
Biologia comparada de Spodoptera cosmioides (Walk.) (Lepidoptera: Noctuidae) em cebola, mamona, soja e feij?o
Bavaresco, Alvimar;Garcia, Mauro Silveira;Grützmacher, Anderson Dionei;Foresti, Josemar;Ringenberg, Rudiney;
Ciência Rural , 2003, DOI: 10.1590/S0103-84782003000600001
Abstract: the biology of spodoptera cosmioides (walk.) was studied on four natural hosts (onion leaves, castor oil plant, soy cv. embrapa 48 and bean cv. carioca). the duration and viability of immature phases and total cycle, instar number, pupals weight, sexual ratio, percentage of deformed adults and adults not released of pupal beg, adults' longevity, fecundity and eggs viability were evaluated. it was observed in castor oil plant and onion shorter duration and larger viability of total cycle (39.7 days and 21.7%; 40.5 days and 21.8%, respectively), in contrast of soy (46.0 days and 3.9%). the pupal weight was 444.6 mg on onion, 420.0mg on bean, 396.6mg on castor oil plant and 298.7 mg on soy. onion and castor oil plant leaves had a predominance of six larval instars, also happening seven for some of them, while in soy the occurrence of seven prevailed, also happening eight instars, indicating less nutritional adaptation of this host. the females had pupal phase significantly smaller than the males in all the hosts, making adults emergency happen before the males. in onion, the longevity of the adults was significantly superior comparing with the other hosts. the fecundity was better on onion and castor oil plant (3224 and 3206 eggs/female, respectively), therefore on soy was observed 1353 eggs/female. in bean leaves, the development of the insect was harmed by morphologic characters, which promoted high mortality in the larval phase.
Fibroma cemento-ossificante central: relato de caso
Alvimar Lima de Castro,Ana Maria Pires Soubhia,Glauco Issamu Miyahara,Idelmo Rangel Garcia Júnior
Odonto , 2007,
Abstract: O fibroma cemento ossificante central é uma neoplasia benigna relativa ao osso que acomete principalmente o sexo feminino, durante a terceira ou quarta décadas de vida. No presente trabalho, é apresentado um caso em uma paciente melanoderma com 17 anos de idade com aumento de volume no rebordo alveolar superior direito, expans o de corticais ósseas vestibular e lingual, duro à palpa o, colora o rósea e recoberto por mucosa íntegra. Com o diagnóstico diferencial de fibroma cemento ossificante central, osteoblastoma e displasia fibrosa monostótica, foi realizada biópsia incisional que possibilitou a identifica o microscópica de inúmeras forma es cementóides e/ou osteóides, de formas e tamanhos variados, dispostas em um estroma fibroso ricamente celularizado e vascularizado, definindo o diagnóstico de fibroma cemento ossificante. A seguir, a paciente foi submetida à remo o cirúrgica da les o.
Biologia comparada de Spodoptera cosmioides (Walk.) (Lepidoptera: Noctuidae) em cebola, mamona, soja e feij o
Bavaresco Alvimar,Garcia Mauro Silveira,Grützmacher Anderson Dionei,Foresti Josemar
Ciência Rural , 2003,
Abstract: Estudou-se a biologia de Spodoptera cosmioides (Walk.) sobre quatro hospedeiros naturais (folhas de cebola, mamona, soja cv. Embrapa 48 e feij o cv. Carioca). Foram avaliados a dura o e viabilidade das fases imaturas e do ciclo total, número de ínstares, peso de pupas, raz o sexual, porcentagem de deforma o de adultos e de adultos n o liberados dos invólucros pupais, longevidade de adultos, fecundidade e viabilidade de ovos. Observou-se menor dura o e maior viabilidade do período ovo-adulto para mamona e cebola (39,7 dias e 21,7% e 40,5 dias e 21,8%, respectivamente), do que para soja (46,0 dias e 3,9%). O peso pupal foi de 444,6 mg em cebola, 420,0 em feij o, 396,6 em mamona e 298,7 em soja. Constatou-se um predomínio de seis ínstares larvais em folhas de cebola e mamona, ocorrendo também sete para alguns indivíduos, enquanto que em soja predominou a ocorrência de sete, também verificando oito ínstares, indicando uma menor adequa o nutricional deste hospedeiro. As fêmeas apresentaram dura o da fase pupal significativamente menor do que os machos em todos hospedeiros, fazendo com que a emergência do adulto ocorresse antes dos machos. Em cebola, a longevidade de adultos foi significativamente superior aos demais hospedeiros. A fecundidade foi maior em cebola e mamona (3224 e 3206 ovos/fêmea, respectivamente), enquanto que para soja observou-se 1353 ovos/fêmea. Em folhas de feij o, o desenvolvimento do inseto foi prejudicado por caracteres morfológicos - pilosidade, que promoveram elevada mortalidade na fase larval.
Efeito de tratamentos químicos alternativos no controle de Diaphania spp. (Lepidoptera: Crambidae) em pepino = Effect of alternative chemical treatments on the Diaphania spp. (Lepidoptera: Crambidae) control in cucumber
Alvimar Bavaresco
Acta Scientiarum : Agronomy , 2007,
Abstract: As brocas-das-cucurbitáceas Diaphania nitidalis e D. hyalinata s o pragas importantes na cultura do pepino, danificando a parte aérea das plantas. Para seu controle, normalmente s o empregados inseticidas de alta toxicidade e baixa seletividade aos inimigosnaturais. O objetivo deste trabalho foi avaliar o efeito de tratamentos químicos alternativos utilizados na produ o organica no controle das brocas. Os tratamentos avaliados foram: 1. Bacillus thuringiensis var. kurstaki (Dipel PM ); 2. óleo de nim (Dalneem ), 3. Extrato de sementes de cinamomo (Melia azedarach); 4. Extrato de folhas de cinamomo; 5. Extrato de folhas de pessegueiro bravo e pimenteira (Prunus sellowii e Capsicodendron dinisii); 6. Testemunha (sem aplica o), realizando-se quatro aplica es em intervalos de sete dias. A avalia o dos danos foi realizada sete dias após a 4a aplica o. O inseticida biológico Dipel PM (Bacillus thuringiesis var. kurstaki) proporcionou maior eficiência de controle, reduzindoem 33,3% os danos em ponteiros e 25,9% em frutos de pepino. O óleo de nim (Dalneem ) e os extratos aquosos de sementes de cinamomo, de folhas de cinamomo e de folhas de pessegueiro bravo + pimenteira n o diferiram significativamente da testemunha, apresentando eficiência de controle de 0 a 22,2% em ponteiros e de 0,1 a 13,7% em frutos. The pickleworms Diaphania nitidalis and D. hyalinata are important pests of cucumber, damaging the canopy of the plants. In general, insecticides with high toxicity and low selectivity to natural enemies are used to control this pest. The objective of this work was to evaluate the effect of alternative chemical treatments on the control of pickleworms in cucumber. The evaluated treatments were: 1 – Bacillus thuringiensis var. kurstaki (Dipel PM ); 2 –Neem oil (Dalneem ), 3 – Chinaberry seeds extract (Melia azedarach); 4 – Chinaberry leaves extract; 5 – Prunus sellowii and Capsicodendron dinisii leaves extract; 6 – Control (without application). Four applications of the alternative treatments were made at seven days interval. The evaluation of pest damages was carried out seven days after the fourth application. The biological insecticide Dipel PM showed the higher control efficiency, reducing damages in buds (33.3%) and fruits (25.9%). The neem oil (Dalneem ) and the extracts of seeds and leaves of M. azedarch and leaves of P. sellowii + Capsicodendron dinisii had the same performance in relation to thecontrol.
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