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Registros recuperados: 21
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Abundância e flutuação populacional das espécies de Chrysomya (Diptera, Calliphoridae) em Pelotas, Rio Grande do Sul, Brasil Iheringia, Sér. Zool.
Vianna,Élvia E. S.; Costa,Paulo R. P.; Fernandes,Ana Lúcia; Ribeiro,Paulo B..
To estimate the populational fluctuation of Chrysomya Robineau-Desvoidy, 1830 species and the relation of populational abundance around, six wind oriented trap (WOT) were placed in three distinct ecological areas (urban, rural and wild) in Pelotas, Rio Grande do Sul, Brazil, from February/1993 to January/1995. The flies were weekly collected. Captured species were Chrysomya albiceps Wiedmann, 1819, C. megacephala Fabricius, 1794 and C. putoria Wiedmann, 1830 with respective abundance of 64.5%, 19.7% and 0.9%, representing a total of 85.0% of 409,920 specimens of Calliphoridae. The three species demonstrated similarity in the populational fluctuation, except in the abundance. The populational peak ocurred in autum when the temperature decreases. In the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Population fluctuation; Chrysomya; Calliphoridae.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000300002
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Citrus rootstocks influence the population densities of pest mites Ciência Rural
Silva,Rafael Rocha da; Teodoro,Adenir Vieira; Vasconcelos,Jéssica Fontes; Martins,Carlos Roberto; Soares Filho,Walter dos Santos; Carvalho,Hélio Wilson Lemos de; Guzzo,Elio Cesar.
Citrus are attacked by pest mites such as the citrus rust mite Phyllocoptruta oleivora (Ashmead) (Acari: Eriophyidae) and the spider mite Tetranychus mexicanus (McGregor) (Acari: Tetranychidae). However, little is known on citrus rootstocks influencing pest mites. We aimed to evaluate the influence of rootstocks on population densities of pest mites on the sweet oranges 'Pera CNPMF D-6' and 'Valencia Tuxpan' throughout time. Adults of both mite species were monthly counted during 19 months from June 2011 to February 2013. Rootstocks influenced the populations of pest mites, since lower densities of P. oleivora were found on 'Pera CNPMF D-6' sweet orange grafted on the hybrid TSKC × CTTR - 002 and on 'Swingle' citrumelo in comparison with the hybrid LVK ×...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Citrus rust mite; Phyllocoptruta oleivora; Population fluctuation; Tetranychus mexicanus.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100001
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Collection of Coleoptera from a poultry farm in Pelotas, Rio Grande do Sul, Brazil Ciência Rural
Pinto,Diego Moscarelli; Duarte,Juliano Lessa Pinto; Ribeiro,Paulo Bretanha; Silveira Júnior,Paulo.
To evaluate the population fluctuation of Coleoptera from a poultry farm in Pelotas, Rio Grande do Sul, Brazil, two sampling methods were used: a tube-type trap and a sandwich trap. The analyses of polynomial regression were applied independent of the type of sampling method used. The experiment was carried out for twelve months, from April 2002 to March 2003, in a broiler barn aviary at the Conjunto Agrotécnico Visconde da Graça/UFPEL. A total of 43.945 Coleopterans were captured from the following species: Alphitobius diaperinus, Carcinops troglodytes, Euspilotus rubriculus, Gnathocerus cornutus, Mezium americanum and Somotrichus unifasciatus. Among these, Alphitobius diaperinus was present in all months of the year, with larval population peak in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coleoptera; Aviary; Population fluctuation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000200002
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Corn stemborer population fluctuation on baby corn Thai Agricultural
Auranuj Kongkanjana; Wachara Choonhawong.
1 table
Palavras-chave: Corn; Maize; Stem borers; Baby corn; Population fluctuation; ข้าวโพด; ข้าวโพดฝักอ่อน; หนอนเจาะลำต้น; ประชากร.
Ano: 1990 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4312
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Detección de Spheno venatus vestitus Chittenden y manejo de Spodoptera frigiperda (L.E. Smith) sobre césped de Quintana Roo, México Colegio de Postgraduados
León García, Imelda.
Debido a la importancia económica, social y ambiental de los campos de golf en México, y a la falta de información para iniciar programas de manejo integrado de plagas en césped de estos, en este trabajo se planteó realizar un diagnóstico de especies plaga de importancia en campos de la Riviera Maya y determinar su fluctuación poblacional, evaluar los niveles de resistencia de Spodoptera frugiperda a insecticidas de uso común en la zona de estudio, y determinar los efectos letales de un insecticida con novedoso modo de acción (Rynaxypyr®) sobre estados inmaduros de esta plaga. Se realizaron muestreos directos al césped y se procedió a la identificación de los insectos problema. Se registró por primera vez en Quintana Roo Shenophorus venatus...
Tipo: Tesis Palavras-chave: Campos de golf; Plagas; Fluctuación poblacional; Resistencia a insecticidas Golfcourse; Pests; Population fluctuation; Insecticide resistence.
Ano: 2012 URL: http://hdl.handle.net/10521/1019
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Detección de Sphenophorua venatus vestitus Chittenden y manejo de Spodoptera frugiperda (L.E. Smith) sobre césped de Quintana Roo, México Colegio de Postgraduados
León García, Imelda.
Debido a la importancia económica, social y ambiental de los campos de golf en México, y a la falta de información para iniciar programas de manejo integrado de plagas en césped de estos, en este trabajo se planteó realizar un diagnóstico de especies plaga de importancia en campos de la Riviera Maya y determinar su fluctuación poblacional, evaluar los niveles de resistencia de Spodoptera frugiperda a insecticidas de uso común en la zona de estudio, y determinar los efectos letales de un insecticida con novedoso modo de acción (Rynaxypyr®) sobre estados inmaduros de esta plaga. Se realizaron muestreos directos al césped y se procedió a la identificación de los insectos problema. Se registró por primera vez en Quintana Roo Shenophorus venatus...
Tipo: Tesis Palavras-chave: Campos de golf; Plagas; Fluctuación poblacional; Resistencia a insecticidas; Doctorado; Entomología y Acarología; Golfcourse; Pests; Population fluctuation; Insecticide resistence.
Ano: 2009 URL: http://hdl.handle.net/10521/1347
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Ecologia de mosquitos (Diptera, Culicidae) em criadouros naturais e artificiais de área rural do norte do Parana, Brasil: II. Coletas com isca humana Zoologia
Lopes,José; Lozovei,Ana L.
With then purpose of knowing the species of mosquitos that colonize an anthropogenic area in the North of Paraná, Brazil. 1496 specimens were captured by the humam bait method, accountig 23 species among them the following were predominam: Anopheles strodei Root, 1926; An. evansae Brethes, 1926; An. galvaoi Causey, Deane & Deane, 1943; An. albitarsis Lynch Arribalzaga, 1878; Coquillettidea juxtamansonia Chagas, 1907; Co. venezuelensis Theobaldi, 1912; Culex (Melanoconion) sp. e Aedes fluviatilis (Lutz, 1904) and showed shong anthopophilia and a high degree of adaptation to humam environment. On the cantray, the species that showed lilth adaptation to such ambients or to the geoclimatic conditions of the region were: Anopheles triannulatus (Neiva...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Culicidae; Ecology; Human bait; Behaviour feeding; Population fluctuation.
Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300007
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Evaluation of damage, food attractants and population dynamics of strawberry sap beetle Horticultura Brasileira
Fornari,Rodrigo A; Machota Junior,Ruben; Bernardi,Daniel; Botton,Marcos; Pastori,Patrik Luiz.
The strawberry sap beetle [Lobiopa insularis (Coleoptera: Nitidulidae)] is one of the most important pests of strawberry crops. This study aimed to determine the relationship between strawberry fruit maturation stages and the feeding of sap beetle in laboratory and to evaluate food attractants and population dynamics of this species during the crop season. To evaluate the feeding preference of strawberry fruits 'Camarosa' at different maturation stages [green (G), semi-ripe (SM) and ripe (R)] were exposed to adult sap beetles in plastic cups. We evaluated in field the effect of food baits and pest fluctuation with traps baited with different food baits: (T1) ripe ground strawberries; (T2) cattle feed, granulated sugar and water; (T3) T1 and T2 attractants...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fragaria x ananassa; Lobiopa insularis; Nitidulidae; Baiting; Population fluctuation; Traps.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362013000300007
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Fluctuación poblacional de Phyllocnistis citrella Stainton en limón persa (Citrus latifolia Tanaka) en la sabana de Huimanguillo, Tabasco. Colegio de Postgraduados
Arias López, Víctor Hugo.
El objetivo de este trabajo fue conocer la fluctuación poblacional de larvas de Phyllocnistis citrella Stainton y su relación con la abundancia de brotes vegetativos, temperatura y precipitación, en la zona citrícola del estado de Tabasco, México, donde este insecto constituye una plaga importante. El trabajo se realizó de septiembre de 2010 a agosto de 2011 mediante muestreos quincenales en una plantación de limón persa (Citrus latifolia Tanaka) de una ha, localizada en el municipio de Huimanguillo (17° 42’ 06.4’’ N y -93° 29’ 02.5’’ O). La especie se presentó durante todo el año con mayor densidad de población de mayo a julio, coincidiendo con la abundancia de brotes y altas temperaturas. La incidencia del insecto presentó correlación muy alta con...
Palavras-chave: Phyllocnistis citrella; Fluctuación poblacional; Brotes vegetativos; Population fluctuation; Vegetative shoots; Producción Agroalimentaria en el Trópico; Maestría.
Ano: 2012 URL: http://hdl.handle.net/10521/762
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Fluctuación poblacional de Phyllocnistis citrella Stainton en limón persa (Citrus latifolia Tanaka) en la sabana de Huimanguillo, Tabasco. Colegio de Postgraduados
Arias López, Víctor Hugo.
El objetivo de este trabajo fue conocer la fluctuación poblacional de larvas de Phyllocnistis citrella Stainton y su relación con la abundancia de brotes vegetativos, temperatura y precipitación, en la zona citrícola del estado de Tabasco, México, donde este insecto constituye una plaga importante. El trabajo se realizó de septiembre de 2010 a agosto de 2011 mediante muestreos quincenales en una plantación de limón persa (Citrus latifolia Tanaka) de una ha, localizada en el municipio de Huimanguillo (17° 42’ 06.4’’ N y -93° 29’ 02.5’’ O). La especie se presentó durante todo el año con mayor densidad de población de mayo a julio, coincidiendo con la abundancia de brotes y altas temperaturas. La incidencia del insecto presentó correlación muy alta con...
Palavras-chave: Phyllocnistis citrella; Fluctuación poblacional; Brotes vegetativos; Population fluctuation; Vegetative shoots; Producción Agroalimentaria en el Trópico; Maestría.
Ano: 2012 URL: http://hdl.handle.net/10521/762
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Fluctuación poblacional del trips de banda roja, Selenothrips rubrocinctus (Giard) (Thysanoptera: Thripidae) en el cultivo de cacao, en La Chontalpa, Tabasco, México. Colegio de Postgraduados
Capetillo Concepción, Eduardo.
S. rubrocinctus daña la epidermis de las hojas, si el ataque es severo las plantas pueden resultar defoliadas parcial o totalmente; al atacar a los frutos les confiere una coloración marrón que dificulta reconocer su grado de maduración. El objetivo de esta investigación fue conocer la fluctuación poblacional de ninfas y adultos y la relación existente con la temperatura y precipitación en una plantación de cacao en Huimanguillo, Tabasco (17°80’ 53.6” N, 93°40’ 37.1” O). Se realizaron muestreos semanales de septiembre de 2011 a agosto de 2012. Los datos climatológicos se tomaron de una estación meteorológica localizada a 5 km de la plantación. La fluctuación poblacional de ambos estados biológicos, ninfas y adultos, manifestó un patrón similar a través...
Palavras-chave: Fluctuación poblacional; Theobroma; Thripidae; Cacao; Population fluctuation; Producción Agroalimentaria en el Trópico; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/2215
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Fluctuación poblacional y disposición espacial de Brevipalpus spp. en huertas de cítricos en Campeche, Yucatán y Quintana Roo. Colegio de Postgraduados
Salinas Vargas, Delfina.
El objetivo del presente trabajo fue identificar y caracterizar la fluctuación y densidad poblacional de tres especies vectoras del virus Citrus leprosis virus-C (CiLV-C) en los estados de Yucatán, Campeche y Quintana Roo, para su eventual aplicación en el desarrollo de sistemas de muestreo en programas oficiales de detección en México. Durante el período de febrero 2010 a febrero 2011, se realizaron ocho muestreos en 100 árboles/parcela. Se obtuvieron muestras de Citrus sinensis, C. aurantium, C. reticulata, C. latifolia, C. paradisi y C. reticulata x C. sinensis. La identificación de las especies de Brevipalpus spp. se realizó con preparaciones de ácaros montados en líquido de Hoyer y observaciones con microscopio electrónico de barrido. La determinación...
Palavras-chave: Brevipalpus; Fluctuación poblacional; Cítricos; CiLV-C; Entomología y Acarología; Maestría; Population fluctuation; Citrus.
Ano: 2012 URL: http://hdl.handle.net/10521/1777
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Flutuação populacional de Anastrepha fraterculus (Wiedemann) e Ceratitis capitata (Wiedemann) (Diptera, Tephritidae) em pomares de pessegueiro em Porto Alegre, Rio Grande do Sul Zoologia
Garcia,Flávio Roberto Mello; Corseuil,Elio.
This paper presents the study of population fluctuation of Anastrepha fraterculus (Wiedemann, 1824) and Ceratitis capitata (Wiedemann, 1830) in peach orchards in Porto Alegre city. The peak for A. fraterculus was in November and December and for C. capitata in December and January. There was no significant difference among the population levels in the cultivars Fla 13-72, Premier and Marli.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diptera; Tephritidae; Anastrepha fraterculus; Ceratitis capitata; Population fluctuation; Fruit flies.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000100013
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Identificación y fluctuación poblacional de trips (Insecta: Thysanoptera) asociados con hortalizas de la región central de México. Colegio de Postgraduados
Turcios Palomo, Ciro Luis Antonio.
En la actualidad los cultivos de hortalizas en México son severamente afectados por insectos conocidos como trips (Thysanoptera: Insecta), las pérdidas son notables en jitomate, chile, tomate de cáscara, calabacita, pepino y cebolla por la importancia económica que representan. La afectación es, por los daños que ocasionan cuando se alimentan de sus brotes y frutos tiernos, follaje y flores, por la transmisión de virus fitopatógenos, por su periodicidad y por las constantes aplicaciones de productos fitosanitarios para su control. Las especies Frankliniella occidentalis y Thrips tabaci, destacan como las más relevantes en estos cultivos por su capacidad invasiva, su amplia distribución y polifagia. De febrero de 2010 a febrero de 2011 se muestrearon...
Palavras-chave: Frankliniella; Thrips; Fluctuación poblacional; Variabilidad genética; Population fluctuation; Genetic variability; Entomología y Acarología; Doctorado.
Ano: 2013 URL: http://hdl.handle.net/10521/2184
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Influência climática e antrópica na abundância e riqueza de Calliphoridae (Diptera) em fragmento florestal da Reserva Biológica do Tinguá, RJ Neotropical Entomology
Ferraz,Adriana C P; Gadelha,Bárbara Q; Aguiar-Coelho,Valéria M.
Monthly collections were made using two traps 5 m apart exposed for 48h, containing sardines and installed at points: A at the edge (500 m from the entrance of the Reserve); B 1200 m from the entrance and 1000 m inside the forest; and C 1700 m from the entrance and 500 m inside the forest. The purpose was to evaluate the abundance and richness of calliphorid species as a function of the environmental conditions using Pearson's correlation, compare the richness of the areas using ANOVA and Tukey's test, compare the abundances of the areas by the Kruskal-Wallis test, and also assess the possible influence of the anthropic presence. Rare, intermediary and common species were identified. The collection totalized 8515 Calliphoridae belonging to 26 species, with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Population dynamics; Population fluctuation; Muscoid.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400004
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Life, Seasonal Cycles, and Population Fluctuation of Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae), in the Central Plain of La Araucanía Region, Chile Chilean J. Agric. Res.
Rebolledo,Ramón; Sheriff,Johnny; Parra,Leonardo; Aguilera,Alfonso.
This study was performed on an alfalfa crop located on the central plain of a Araucanía Region, Chile and in the Laboratorio de Entomología Aplicada de la Facultad de Ciencias Agropecuarias y Forestales at the Universidad de La Frontera. Certain aspects of the biology of Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae) were determined, more specifically in relation to its life cycle, seasonality, and population fluctuation. It was established that this coccinellid requires 190.32 ± 10.2 degree-days to complete a generation under laboratory conditions. This information along with the field samplings made it possible to calculate that H. variegata completes four generations per season in the alfalfa crop (Medicago sativa L.).
Tipo: Journal article Palavras-chave: Life cycle; Seasonal cycle; Population fluctuation.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200020
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North American Dipteran Pollinators: Assessing Their Value and Conservation Status Ecology and Society
Kearns, Carol Ann; University of Colorado at Boulder; kearnsca@rtt.colorado.edu.
Recent attention to pollinator declines has focused largely on bees and vertebrates. However, few pollination systems are obligate, and pollinators that complement the role of bees may respond differently to environmental disturbance. The conservation status of North American fly pollinators remains undocumented. In this paper, methods for monitoring shifts in dipteran pollinator abundance are discussed. The need for further basic research into pollination by flies is addressed, and the significance of dipteran conservation is considered.
Tipo: Peer-Reviewed Reports Palavras-chave: Anthophilous flies; Anthropogenic disturbance; Conservation; Diptera; Dipteran conservation; Generalist pollinators; North America; Pollination; Pollinator declines; Population fluctuation; Redundant pollination systems.
Ano: 2001
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Population dynamics and spatial distribution of Abaris basistriata Chaudoir, 1873 (Coleoptera: Carabidae) Ciência e Agrotecnologia
Martins,Ivan Carlos Fernandes; Cividanes,Francisco Jorge; Barbosa,José Carlos; Lima Junior,Joaquim Alves de; Campos,Lourival Dias.
ABSTRACT Abaris basistriata, a beetle species dominant in agroecosystems and natural habitats, may benefit from the establishment of nearby refuge areas or crop field centers. To confirm this hypothesis, we analyzed the spatial distribution of the species and verified the population dynamics of this predator in a soybean/corn rotation crop and a central refuge area. The 1-ha experimental area was divided in half by a range of herbaceous plants (2 m in width and 80 m in length). Beetle samples were collected using pitfall traps every fortnight during the in-season and every month during the off-season (a total of 27 sampling occurrences). Population fluctuation was analyzed by correlating the total number of specimens with plant phenology. We used multiple...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Interpolation map; Population fluctuation; Refuge areas; Soybean..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000100057
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Seasonality of Pelecinus polyturator (Drury) (Hymenoptera, Pelecinidae) in the Atlantic Rainforest of São Paulo State, Brazil Rev. Bras. entomol.
Lara,Rogéria I. R.; Perioto,Nelson W..
Seasonality of Pelecinus polyturator (Drury) (Hymenoptera, Pelecinidae) in the Atlantic Rainforest of São Paulo State, Brazil. A survey of the parasitoid wasp Pelecinus polyturator (Drury, 1773) (Hymenoptera, Pelecinidae) was carried out with five Malaise traps/area in five areas in the Atlantic Rainforest of São Paulo State, Brazil, between November 2009 and October 2010. The sampling effort in each locality amounted to 1,825 trap-days. Data were obtained from a total of 317 exemplars of P. polyturator, corresponding to 108 females and 209 males. The average sex ratio of the studied population was 0.52. The highest occurrence of P. polyturator was observed between November and March with frequency peak in January; about 95% of the specimens studied were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Neotropical; Phyllophaga; Population fluctuation; Proctotrupoidea.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000100010
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The effect of the glyphosate, 2,4-D, atrazine e nicosulfuron herbicides upon the Edaphic collembola (Arthropoda: Ellipura) in a no tillage system Neotropical Entomology
Lins,Vilma S.; Santos,Honório R.; Gonçalves,Manoel C..
The use of herbicides is a common and intensive practice in no tillage systems. The herbicides can influence, directly or indirectly, the population of edaphic arthropods. Collembola is a group that functions as a bio-indicator of soil conditions. The degree of abundance and diversity of Collembola provides the level of soil disturbance provoked by agricultural practices. This experiment was designed to compare the influence of herbicides on the population fluctuation of Collembola in a no-till soil preparation system. The work was conducted in a non irrigated no-till area at the Núcleo Experimental de Ciências Agrárias of the Universidade Federal de Mato Grosso do Sul (UFMS), Campus de Dourados, in soil planted with corn as a surface covering, during the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Edaphic fauna; Pesticide effect; Population fluctuation; Soil impact.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000200013
Registros recuperados: 21
Primeira ... 12 ... Última
 

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