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Registros recuperados: 159
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Ocorrência de insetos-pragas e de seus predadores em sistemas integrados de produção de soja. Infoteca-e
AVILA, C. J.; SOUZA, E. C. S..
Tipo: Documentos (INFOTECA-E) Palavras-chave: Dinâmica populacional; Praga de planta; Plantio direto; Integração lavoura-pecuária; Integração lavoura-pecuária-floresta; Entomologia; Population dynamics; Plant pest; No tillage; Crop-livestock integration.
Ano: 2017 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1074399
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Paratenic hosts of the swimbladder nematode <i>Anguillicola crassus</i> OMA
Thomas, B.; Ollevier, F.P..
The host specificity and population dynamics of <i>Anguillicola crassus</i> in a number of paratenic hosts were investigated. Various freshwater fish species were sampled monthly (March 1990 to March 1991) from the Kolenhaven (Albertcanal, Genk, Belgium) and examined for L<sub>3</sub>-larvae of <i>Anguillicola crassus</i>. Sixteen species were found to be infected: all the physoclist species examined (<i>Gymnocephalus cernua, Lepomis gibbosus, Ictalurus nebulosus, Stizostedion lucioperca, Gasterosteus aculeatus, Oreochromis niloticus</i> and <i>Perca fluviatilis</i>) and those physostome species of which a sufficient number could be examined to detect the infection (<i>Gobio gobio, Leuciscus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance; Endoparasites; Freshwater fish; Hosts; Introduced species; Parasites; Population dynamics; Specificity; Swim bladder; Anguillicola crassus; Pisces [Fish].
Ano: 1992 URL: http://www.vliz.be/imisdocs/publications/299068.pdf
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Peche de l'anchois (Engraulis encrasicholus ) dans le golfe de Gascogne et sur le littoral atlantique de Galice depuis 1920. Variations quantitatives. ArchiMer
Junquera, Susana.
Using the fishing records from the most relevant ports of the Cantabrian and Galician coasts, th history of the anchovy (Engraulis encrasicholus ) fishery in this area is reconstituted. The crisis observed and the variations in the fishing areas throughout the time are analyzed. An estimation of the age classes composition in the catches founded on commercial classification data can be made. The hypothesis of existence of a core population in the Southern part of the Bay of Biscay is presented and that only under certain advantageous condition the expansion of this species throughout all the Cantabrian Sea was possible.
Tipo: Text Palavras-chave: Pisces; Age composition; Population dynamics; Catch/effort; Fishery statistics.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/publication-1795.pdf
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Population dynamic study of rodents in maize Thai Agricultural
Puangtong Boonsong; Korntong Puangprakhon; Yuvaluk Khoprasert; Taksin Archawakom; Chompoonut Chanyapate; Vera Chamkrachang.
4 ill., 4 tables
Palavras-chave: Corn; Maize; Rodents; Population dynamics; ข้าวโพด; หนู; การเปลี่ยนแปลงประชากร.
Ano: 1992 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4509
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Population dynamics and management of purple nutsedge (Cyperus rotundus L.) in a rice-onion cropping system International Rice Research Institute
Islam, Md. Nazrul.
xv, 106 l. : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Weeds; Cyperus rotundus; Population dynamics; Weed control; Onions; Crop rotation; Cropping systems.
Ano: 2004 URL: http://hdl.handle.net/123456789/391
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Population dynamics of Hirschmanniella mucronata and Hirschmanniella oryzae on Sesbania rostrata, Aeschynomene afraspera and rice variety IR58 International Rice Research Institute
Murwani Esr. Hendro, Sri.
76 leaves : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Nematoda; Population dynamics; Hirschmanniella oryzae; Hirschmanniella mucronata; Sesbania rostrata; Aeschynomene afraspera; IR58 (rice variety).
Ano: 1990 URL: http://hdl.handle.net/123456789/1009
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Population dynamics of Leptopharsa heveae (Hemiptera: Tingidae) and Erythmelus tingitiphagus (Hymenoptera: Mymaridae) in rubber tree plants. Repositório Alice
SANTOS, R. S.; COSTA, V. A.; SILVA, J. M.; FREITAS, S..
The tingid Leptopharsa heveae, known as the lace bug, occurs in large populations in rubber tree plantations, limiting the production of latex due to losses of photosynthetic area and weakening of the infested trees. The alternative for the use of insecticides would be the release of biological control agents, but little is known about the natural enemies of L. heveae. The parasitoid Erythmelus tingitiphagus parasitizes eggs of the lace bug in rubber tree plantations. The knowledge of the population dynamics and the peak of occurrence of economically important insect species and their natural enemies are indispensable requirements for the establishment of efficient and rational control strategies. The objective of this work was to study the population...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Rubber tree; Caucho; Percevejo de renda; Lace bugs; Chinche de encaje; Erythmelus tingitiphagus; Iquitira (MT); Mato Grosso; Praga de planta; Seringueira; Hevea brasiliensis; Mosca de renda; Leptopharsa heveae; Dinâmica populacional; Plant pests; Tingidae; Population dynamics; Plagas de plantas; Dinámica poblacional.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/927246
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Population dynamics of maize insects on seven varieties of maize Thai Agricultural
Sawarng Charoenying.
1 table
Palavras-chave: Corn; Maize; Insect pests; Population dynamics; ข้าวโพด; ประชากร; แมลงศัตรูพืช; พันธุ์.
Ano: 1989 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4372
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Population dynamics of the corn thrips, Frankliella williamsi Hood. on baby and sweet corn varieties Thai Agricultural
Sawarng Charoenying; Somchai Isichaikul; Amornsak, W..
5 tables
Palavras-chave: Corn; Maize; Corn thrips; Frankliniella williamsi; Sweet corn; Baby corn; Vegetable corn; Population dynamics; Insect pests; ข้าวโพด; ข้าวโพดหวาน; ข้าวโพดฝักอ่อน; เพลี้ยไฟ; ประชากร.
Ano: 1986 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4416
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Population dynamics of the root lesion nematode, Pratylenchus brachyurus, in soybean fields in Tocantins state and its effect to soybean yield. Repositório Alice
LIMA, F. S. de O.; SANTOS, G. R. dos; NOGUEIRA, S. R.; SANTOS, P. R. R. dos; CORREA, V. R..
Pratylenchus brachyurus has become increasingly common in soybean fields throughout Brazil where yield loss assessments have reported reduction up to 30%. Currently, no soybean cultivars resistant to P. brachyurus have been identified, and management strategies include crop rotation with non-host crops, fallow, and the application of nematicides. The goals of this study were to examine the population dynamics of P. brachyurus in soybean fields throughout Tocantins state and in areas planted with off-season crops following soybean harvest in a crop succession scheme. Pratylenchus brachyurus was present in ca. 82% of samples with densities in soybean fields ranging from 23 to 20,400 nematodes per 200 cm3 soil or 10 g root samples. In two sites, the mean...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Tocantins; Soja; Glycine max; Helminto; Nematóide; Raiz; Pratylenchus brachyurus; Dinâmica populacional; Soybeans; Helminths; Root lesion nematodes; Population dynamics; Semillas de soja; Helmintos; Nemátodo de las lesiones radiculares; Dinámica poblacional.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1030429
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Preference- performance linkage in the neotropical spittlebug Deois flavopicta and its relation to the Phylogenetic constraints hypothesis. Repositório Alice
PIRES, C.S.S.; PRICE, P.W.; FONTES, E.G..
bitstream/item/177051/1/ID-18439.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Populacao dinamica; Deois Flavopicta; Population dynamics.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/179611
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Premieres donnees sur la dynamique du peuplement macrobenthique des sables fins envases a Abra alba de la Baie de Seine orientale ArchiMer
Gentil, F; Irlinger, J; Elkaim, B; Proniewski, F.
The dynamics of macrobenthos populations living in muddy fine sands near Seine estuary have been studied, to obtain quantitative data for the knowledge of these populations and the impact of macrotidal environment disturbances.
Tipo: Text Palavras-chave: Seasonal variations; Population density; Population number; Ecosystem disturbance; Environmental effects; Population dynamics; Zoobenthos.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1309.pdf
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Pressions de sélection des variétés résistantes sur les populations de bioagresseurs: recherche de critères pour la sélection de variétés à résistance durable National Institute of Agronomic Research
Boissot, Nathalie; Palloix, Alain; Maisonneuve, Brigitte.
Tipo: Working Paper Palavras-chave: Selective pressure; Ecology; Population dynamics; Plant pathogen; Bioagresseur; Pression sélective; Ecologie; Dynamique des populations.
Ano: 2008 URL: http://hdl.handle.net/2174/185
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Relations entre l’état d’une ressource et son exploitation via la compréhension et la formalisation des interactions de socio-écosystèmes. Application à la palourde japonaise (Venerupis philippinarum) du bassin d’Arcachon. ArchiMer
Caill-milly, Nathalie.
Significant component of the marine benthic ecosystem, exploited bivalves are mainly located inside the coastal area, which temporal and spatial features generate natural population fluctuations and contribute to considerable biomass and demographic structure changes added to anthropogenic activities’ effects (fishing, pollution,…). Understanding of the relationships between the species, its environment and its exploitation is crucial and their formalization, including for management purposes, requires development of mathematical models that aim at describing the functioning of the system, to explain the observed phenomenon in terms of cause and effect or predict effects of new causes. Originating from venerid culture trials carried out in France in the...
Tipo: Text Palavras-chave: Bivalve; Morphométrie; Allométrie; Dynamique des populations; Système dynamique; Gestion; Palourde japonaise; Venerupis philippinarum; Bivalve; Morphometry; Allometry; Population dynamics; Dynamic system; Management; Manila clam; Venerupis philippinarum.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00139/25034/23143.pdf
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Sazonalidade da mosca-dos-chifres, Haematobia irritans, no semiárido brasileiro. Repositório Alice
MEDEIROS, M. A.; BARROS, A. T. M. de; MEDEIROS, R. M. T.; VIEIRA, V. D.; AZEVEDO, S. S.; RIET-CORREA, F..
A mosca-dos-chifres (Haematobia irritans) é uma dos principais pragas que afetam a pecuária no Brasil. A despeito das carências regionais, inexistem estudos que avaliem sua importância e subsidiem seu controle no nordeste brasileiro. O presente estudo objetivou conhecer a dinâmica populacional e determinar os níveis de infestação da H. irritans no semiárido paraibano, visando subsidiar programas de controle. O estudo foi conduzido no Núcleo de Pesquisa para o Trópico Semiárido, Universidade Federal de Campina Grande, município de Patos, Paraíba. Durante 42 meses, de abril 2011 a setembro 2014, contagens de moscas-dos-chifres foram realizadas a cada 14 dias em um rebanho Sindi (26 vacas e um touro). Paralelamente, foram registrados diariamente os principais...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Seasonality; Brazilian semi-arid; Strategic control; Semiárido Paraibano; Ectoparasito; Controle estratégico; Haematobia Irritans; Dinâmica Populacional; Ectoparasites; Population dynamics; Haematobia irritans irritans.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101718
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Seasonal dynamics of larvae and adults of two Enochrus Thomson (Coleóptera: Hydrophilidae) species in temporary and permanent water bodies of an urban park in Buenos Aires RChHN
BYTTEBIER,BARBARA; FISCHER,SYLVIA; TORRES,PATRICIA L. M..
The dynamics of Enochrus variegatus (Steinheil) and Enochrus vulgaris (Steinheil) in temporary pools and permanent ponds were studied in an urban park of Buenos Aires, Argentina. Samples were collected from both types of habitats weekly throughout one year, and variables like water surface and vegetation cover were recorded. In permanent ponds, adults of both species were found throughout the study period, while in temporary pools their presence depended on the availability of water. Differences in their reproductive seasons and breeding sites were observed. Enochrus vulgaris was characterized by an opportunistic strategy, and its larvae were detected in both types of habitats, associated mainly with spring and summer temperatures. Conversely, E....
Tipo: Journal article Palavras-chave: Adaptation to drought; Aquatic Coleoptera; Hydrophilidae; Population dynamics; Water permanence.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000300003
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Simulação da dinâmica populacional de Helicoverpa armigera com base em dados de feijão cultivar pérola em sala de criação laboratorial. Repositório Alice
TEIXEIRA, W. P.; LUCHINI, G. A.;  SOUZA, G. M.; MARINHO-PRADO, J. S.; PESSOA, M. C. P. Y..
Este trabalho avaliou o desenvolvimento de fases imaturas de Helicoverpa armigera em feijão BRS Pérola, em sala de criação laboratorial (T= 25 ± 1°C, UR= 71 ± 5% e fotoperíodo de 14h), para subsidiar avaliações da dinâmica populacional dessa praga por simulação numérica nesse hospedeiro. Dados de literatura da praga no cultivo de feijão foram considerados nas fases adultas do inseto. Cenários diferenciados de tempo de simulação (T em dias) considerando um único casal ao início da simulação foram realizados. As durações das fases de ovo, lagarta e pupa em BRS-Pérola foram de 3,0, 20,0 ± 2,8 e 12,3 ± 1,45 dias, respectivamente. Observou-se alta mortalidade na fase de pupa (45%) quando comparada à de lagarta (35%), porém com viabilidade menor para pupa...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Criação laboratorial; Tendências; Praga exótica; Feijão; Dinâmica populacional; Lepidoptero; Phaseolus Vulgaris; Helicoverpa armigera; Plant pests; Introduced species; Population dynamics; Lepidoptera.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084165
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Situação da cultura da pupunha no Estado do Acre. Infoteca-e
BERGO, C. L..
Este trabalho tem por objetivo relatar a situação da pupunha-palmiteira cultivada no Estado do Acre, podendo servir também para orientar futuras discussões e pesquisas sobre a cultura da pupunha na Região Norte.
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Peach palm; Palmetto; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Pupunha; Bactris gasipaes; Plantio; Dinâmica populacional; Palmito; Produção; Cadeia produtiva; Population dynamics; Supply chain; Dinámica poblacional; Cadena de suministro.
Ano: 2009 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/661752
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Small pelagic fish dynamics: a review of mechanisms in the Gulf of Lions ArchiMer
Saraux, Claire; Van Beveren, Elisabeth; Brosset, Pablo; Queiros, Quentin; Bourdeix, Jean-herve; Dutto, Gilbert; Gasset, Eric; Jac, Cyrielle; Bonhommeau, Sylvain; Fromentin, Jean-marc.
Around 2008, an ecosystem shift occurred in the Gulf of Lions, highlighted by considerable changes in biomass and fish mean weight of its two main small pelagic fish stocks (European anchovy, Engraulis encrasicolus; European sardine, Sardina pilchardus). Surprisingly these changes did not appear to be mediated by a decrease in fish recruitment rates (which remained high) or by a high fishing pressure (exploitation rates being extremely low). Here, we review the current knowledge on the population's dynamics and its potential causes. We used an integrative ecosystem approach exploring alternative hypotheses, ranging from bottom-up to top-down control, not forgetting epizootic diseases. First, the study of multiple population characteristics highlighted a...
Tipo: Text Palavras-chave: Population dynamics; Top-down; Disease; Zooplankton; Exploited species; Bottom-up.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00427/53861/54903.pdf
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Sobre la dinámica poblacional de la caballa en la pesquería de Mar del Plata. Período 1980-1990 OceanDocs
Perrotta, R.G.; Pertierra, J.P..
This species is a principal basic product of the local canned industry. The results show that the biomass and capture were variable for the studied period as a consequence of change in the capturability, and the fishstock is underexploited. Also was estimated the contribution of recruitment, growth and mortality in the total biomass.
Tipo: Journal Contribution Palavras-chave: Population dynamics; Mathematical models; Biomass; Biomass; Population dynamics; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6111; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 1993 URL: http://hdl.handle.net/1834/2571
Registros recuperados: 159
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