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Registros recuperados: 14
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Chromosome polymorphisms in natural populations of the South American grasshopper Sinipta dalmani Genet. Mol. Biol.
Remis,Maria Isabel.
Six populations of Sinipta dalmani from the provinces of Buenos Aires and Entre Rios (Argentina) were analyzed. The populations of "El Palmar" National Park (Entre Rios) were polymorphic for pericentric inversions in pairs M4 and M7 and for a centric fusion involving pair M5 and the X chromosome. The M4 inversion remained similar over time and the karyomorphic frequencies did not depart from those expected according to the Hardy-Weinberg equilibrium. The analysis of chiasma frequency and distribution showed clear intra- and interchromosome effects of the different chromosome rearrangements. Both inversions and centric fusions were related with total or partial crossing over restriction in heterozygous condition, leading to a genetic differentiation between...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pericentric inversion; Centric fusion; Chiasma conditions; Grasshopper.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100009
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Chromosome study in Schistocerca (Orthoptera-Acrididae-Cyrtacanthacridinae): karyotypes and distribution patterns of constitutive heterochromatin and nucleolus organizer regions (NORs) Genet. Mol. Biol.
Souza,Maria José de; Melo,Natoniel Franklin de.
Chromosome analyses were performed in two grasshopper species of the genus Schistocerca, S. pallens and S. flavofasciata. Both species shared the same diploid number (2n = 23, X in males; 2n = 24, XX in females);and a conserved karyotype composed exclusively of acrocentric chromosomes, but differed in their distribution patterns of constitutive heterochromatin and nucleolus organizer regions (NORs). Constitutive heterochromatin was located in the pericentromeric region of all chromosomes in both species. S. flavofasciata presented an additional C-band on the distal region of the long arm of a small autosome pair (S9). Nucleolus organizer regions (NORs), revealed by silver nitrate staining (Ag-NORs), were observed on a medium autosome pair (M5) in both...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Grasshopper; Constitutive heterochromatin; Nucleolus organizer regions.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000100011
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Effect of two dosages of Metarhizium anisopliae var. acridum against Rhammatocerus schistocercoides Rehn. Repositório Alice
FARIA, M.R. de; MAGALHÃES, B.P.; ALVES, R.T.; SCHMIDT, F.G.V.; SILVA, J.B.T. da; FRAZÃO, H..
The fungus Metarhizium anisopliae var. acridum, strain CG 423, was tested under field conditions against the gregarious grasshopper Rhammatocerus schistocercoides (Rehn) (Orthoptera: Acrididae). Conidia formulated in a racemic mixture of soybean oil and kerosene were sprayed under field conditions using an ultralow-volume hand-held atomizer Ulva Plus adjusted to deliver 2.9 L/ha. Bands composed of 2nd instar nymphs were treated with either 5.0x1012 or 1.0x1013 viable conidia/ha. The number of insects in each band was estimated at day one following spraying and by the end of the field trial (15 to 16 days post-treatment). Reductions in population size reached, in average, 65.8% and 80.4% for bands treated with the higher and lower dosage, respectively. For...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Biological control; Microbial pesticide; Entomogenous fungus; Grasshopper; Oil formulation; Controle biológico; Pesticida microbiano; Fungo entomopatogênico; Gafanhoto; Formulação oleosa.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/108797
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Effect of two dosages of Metarhizium anisopliae var. acridum against Rhammatocerus schistocercoides Rehn. Repositório Alice
FARIA, M. R. de F.; MAGALHAES, B. P.; ALVES, R. T.; SCHMIDT, F. G. V.; SILVA, J. B. T. da; FRAZAO, H..
The fungs Metarhizizium anisopliae var. acridum, strain CG 423, was tested under fiel conditions against the gregarious grasshopper Rhannatocerus schistocercoides (Rehn) (Orthoptera: Acrididae). Conidia formulated in a rancemic mixture of soybean oil and kerosene were sprayed under field conditions using na ultralow-volume hand-held atomizer Ulva Plus adjusted to deliver 2.9 L/há. Bands composed of 2 nd instar nymphs were treated eitheir 5.0x 1012nor 1.0x1013 viable conidia/ha. The number of insects in each band was estimated at day one following spraying and by the field trial ( 15 to 16 days pos-treatment). Reductions in population size reached, in average, 65.5% for bands treated with the higher and lower dosage, respectively. For both dosages, total...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cerrado; Controle biologico; Gafanhoto; Pesticida; Fungo; Biological control; Microbial pesticide; Entomogenous fungus; Grasshopper; Oil formulation.
URL: http://www.alice.cnptia.embrapa.br/handle/doc/566049
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Effect of two dosages of Metarhizium anisopliae var. acridum against Rhammatocerus schistocercoides Rehn PAB
Faria,Marcos Rodrigues de; Magalhães,Bonifácio Peixoto; Alves,Roberto Teixeira; Schmidt,Francisco Guilherme Vergolino; Silva,João Batista Tavares da; Frazão,Heloísa.
The fungus Metarhizium anisopliae var. acridum, strain CG 423, was tested under field conditions against the gregarious grasshopper Rhammatocerus schistocercoides (Rehn) (Orthoptera: Acrididae). Conidia formulated in a racemic mixture of soybean oil and kerosene were sprayed under field conditions using an ultralow-volume hand-held atomizer Ulva Plus adjusted to deliver 2.9 L/ha. Bands composed of 2nd instar nymphs were treated with either 5.0x10(12) or 1.0x10(13) viable conidia/ha. The number of insects in each band was estimated at day one following spraying and by the end of the field trial (15 to 16 days post-treatment). Reductions in population size reached, in average, 65.8% and 80.4% for bands treated with the higher and lower dosage, respectively....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Microbial pesticide; Entomogenous fungus; Grasshopper; Oil formulation.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002001100003
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El comportamiento acústico de Fenestra bohlsii Giglio-Tos (Orthoptera: Acrididae: Gomphocerinae) Neotropical Entomology
Lorier,Estrellita; Clemente,Maria E; García,Maria D; Presa,Juan J.
The acoustic behavior of Fenestra bohlsii Giglio-Tos is described for the first time. The sounds and behaviors were observed and registered in captivity. The signals were digitized with the Sound-Blaster AWE64 Gold program and analysed with the Avisoft SAS Lab Pro 30 PC for MS Windows software. Seven different types of sounds are described as produced by males: spontaneous song (also used during the courtship), two different types of courtship song, assault song, tapping associated to the courtship, interaction between males and fly crackling. For each one, the characteristic oscillograms and frequency spectra are given. Sounds are produced by different mechanisms: femoro-tegminal stridulation, typical for Gomphocerinae, fly crackling, hind tarsi tapping...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Song pattern; Display; Grasshopper; Courtship; Mating.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600001
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Embryonic external morphogenesis of Rhammatocerus conspersus (Bruner) (Orthoptera: Acrididae: Gomphocerinae) and determination of the diapausing embryonic stage Anais da SEB
Niva,Cintia C.; Becker,Miriam.
The grasshopper Rhammatocerus conspersus (Bruner) (Orthoptera: Acrididae: Gomphocerinae) is an occasional pest in pasturelands of Rio Grande do Sul State. It is a univoltine species with an embryonic diapause. Nymphal and adult stages occur during the warmer months (November-March). Eggs were dissected periodically for characterization of embryonic external morphogenesis in 1994 and 1995. Ten embryonic stages were illustrated. Two diapausing stages were verified in R. conspersus: one at 25% and another at 50% of total embryonic development.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Grasshopper; Embryo; Diapause; Morphology.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000400010
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Fenologia de Cornops aquaticum (Bruner) (Orthoptera: Acrididae) em Eichhornia azurea (Pontederiaceae) no norte do Pantanal de Mato Grosso Neotropical Entomology
Silva,Fatima R J da; Marques,Marinêz I; Battirola,Leandro D; Lhano,Marcos G.
Cornops aquaticum (Bruner) has Eichhornia crassipes, E. azurea, Pontederia cordata and P. lanceolata (Pontederiaceae) as the known host plants. This grasshopper species is cited as a possible agent of biological control for native aquatic macrophytes E. azurea and E. crassipes. This study, carried out from March, 2006 to February, 2007, aimed to evaluate the phenology and age structure of the population of C. aquaticum associated with E. azurea in Piuval bay, Pantanal of Poconé, MT, and to identify possible relationships of its life cycle to abiotic factors such as insolation, temperature and precipitation. Monthly collections of 50 individuals were carried out according to the protocol defined by the "Host - Insect Coevolution on Waterhyacinth" project....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abiotic factor; Age structure; Aquatic macrophyte; Grasshopper.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400011
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Identificação de predadores de Orphulella punctata (de Geer) (Orthoptera, Acrididae) através da serologia Zoologia
Cassaro-Silva,Marta; Serrão,José Eduardo; Sousa-Silva,Carlos; Marques-Pacheco,Josué.
Females of Orphulella punctata (de Geer, 1794) were captured in the field and kept in cages with food and boxes filled with moist soil for oviposition. The eggs, macerated with 0,85% saline solution and centrifugated, were used as the immunizing antigen for obtention of the specific antiserum (AS-O). Rabbits were immunized by the linphonodule injection method with two injections of this antigen, with an interval of 15 days between the 1st and 2nd inoculations. Serological tests were performed using double diffusion in agar gel with homologous and heterologous antigens. Specific serological reactions were obtained 14 days after the 1st inoculation. The antiserum of the 30th day gave 5, 2-4 and 1-4 precipitation lines respectively with eggs, female and male...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Arthropod; Grasshopper; Antiserum; Antigen; Biological control; Predation.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100007
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Introduction a l'etude des pullulations du criquet ravageur Rhammatocerus pictus (Bruner, 1900) (Orthoptera, Acrididae, Gomphocerinae) au Mato Grosso (Bresil). Infoteca-e
LAUNOIS, M. A..
Identite du ravageur; Origine probable des pullulations; Organisation actuelle de la lutte; Essais d' evaluation quantitative; Perspectives d' evolution de la situation acridienne et recommandations; Conclusions; Annexe: calendrier de mission.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Origem; Evolução; Grasshopper; Gafanhoto.
Ano: 1984 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/150609
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Locust and grasshopper control by cropping systems Thai Agricultural
Samuth Mongkolkiti.
Palavras-chave: Corn; Maize; Patanga; Locust; Grasshopper; Patanga succincta; Cropping systems; Agroecosystem; Insect control; ข้าวโพด; ตั๊กแตนปาทังก้า; ระบบการปลูกพืช; ระบบนิเวศเกษตร.
Ano: 1979 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3968
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Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations Rev. Bras. entomol.
Mariottini,Yanina; Wysiecki,María Laura De; Lange,Carlos Ernesto.
Dichroplus maculipennis is one of the most characteristic and damaging grasshopper species of Argentina, mainly in areas of the Pampas and Patagonia regions. We estimated and compared the longevity and fecundity of adult female D. maculipennis under controlled conditions (30ºC, 14L:10D, 40% RH) from individuals collected as last instar nymphs (VI) in the field and with a known recent history of low and high density conditions. Densities of D. maculipennis at the collecting sites were 0.95 individuals per m² in 2006 and 46 ind/m² in 2009, representing non-outbreaking and outbreaking situations, respectively. Adult female longevity in 2006 (67.96 ± 3.2 days) was significantly higher (p < 0.05) than in 2009 (37.44 ± 1.98 days). The number of egg-pods per...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fecundity; Grasshopper; Longevity; Melanoplinae.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300019
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Notes monographiques preliminares sur Eutropidacris collaris (Stoll, 1813) (Orthoptera, Romaleidae, Romaleinae) au Bresil. Infoteca-e
LAUNOIS, M. A..
Identite taxonomique; Distribution geographique et importance economique; Caracteres bio-ecologiques; Perspectives de controle des pullulations; Conclusion: Les recherches a entreprendre.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Controle; Eutropidacris collaris (Stoll; 1813) (Orthoptera; Romaleidae; Romaleinae) au Bresil; Memória técnica do CPATSA; Grasshopper; Gafanhoto; Taxonomia; Grasshoppers.
Ano: 1984 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/157779
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Postembryonic development and food consumption of Dichroplus elongatus Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae: Melanoplinae) under laboratory conditions Neotropical Entomology
Mariottini,Y; de Wysiecki,ML; Lange,CE.
Dichroplus maculipennis (Blanchard) and D. elongatus Giglio-Tos are two of the most important melanoplines in Argentina, both ecologically and economically. The postembryonic development and forage loss (consumption of Bromus brevis Ness + fallen material) caused by older nymphs (instars IV, V, VI) and adults of both species were studied under controlled conditions (30ºC, 14L:10D, 40% RH). Five nymphal instars were recorded in D. elongatus, and six in D. maculipennis. Total nymphal development was similar in both species (D. elongatus: 32 ± 0.70 days; D. maculipennis: 34.5 ± 0.37 days). Daily consumption increased from nymphal instars to pre-reproductive adult stage. In both species, pre-reproductive females had higher consumption rates than other stages...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Grasshopper; Nymphal development; Loss of forage.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000200006
Registros recuperados: 14
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