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SAZONALIDADE DA OFERTA DE PRODUTOS HORTÍCOLAS: O MERCADO DE BERINJELA AgEcon
Anefalos, Lilian Cristina; Moreira, Silvia Rocha; Cipolli, Katia Maria Vieira Avelar Bittencourt; Turco, Patricia Helena Nogueira; Tavares, Paulo Eduardo Da Rocha.
O objetivo deste trabalho foi analisar o mercado de berinjela no período de 2001 a 2006 para estudar a evolução dos índices sazonais de volume e preço comercializados nos principais entrepostos de São Paulo e Minas Gerais. Para isso foram utilizadas séries históricas mensais de preços e volumes comercializados para se determinar seu padrão sazonal anual, a partir do método da média geométrica móvel centralizada. No caso da berinjela, verificou-se elevação da oferta do produto a partir de agosto e setembro, com conseqüente redução nos preços praticados nos entrepostos. Com a aplicação de novas tecnologias, pode ocorrer oferta de produtos de melhor qualidade, influenciando decisivamente a sazonalidade de preços no mercado...
Tipo: Conference Paper or Presentation Palavras-chave: Hortaliça; Sazonalidade; Entreposto; Produto fitoterápico; Vegetable; Seasonality; Mart; Fitoterapeutic product; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/113377
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Sazonalidade de três espécies de Syrphidae (Insecta, Diptera) capturadas com armadilha Malaise no Estado do Paraná, Brasil Zoologia
Marinoni,Luciane; Bonatto,Sionei Ricardo.
The project "Survey of the Entomolo-gical Fauna in Paraná" (PROFAUPAR) was carried out in eight localities of Paraná, Brazil, during two years. In the first year a total of 1.607 specimens of Syrphidae were collected with Malaise trap. The species Toxomerus tibicen (Wiedemann, 1830), Microdon milis Curran, 1940 and Leucopodella gracilis (Williston, 1891) were the most abundant. The abundance and seasonality of each species are evaluated.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diptera; Syrphidae; Abundance; Seasonality; Malaise trap; Paraná; Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100007
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Sazonalidade e horário de atividade de abelhas Euglossinae (Hymenoptera, Apidae), em florestas de terra firme na Amazônia Central Zoologia
Oliveira,Marcio Luiz de.
Euglossinae bee fauna of two areas of terra firme forest near Manaus, Amazonas, Brazil was compared. Over a twelve-month period collections were done fortnightly, between 7:00 a.m and 5:00 p.m, using traps with eight kinds of scent baits. The traps were placed in the understory and in tree crowns. The majority of species and specimens was most active between August-December, near the beginning of the rainy season in this region. The bees were most active from 9:00 a.m. until 4:00 p.m., while air temperatures were between 24.5-27ºC, but there was a decline in this activity when air temperature varied above or below of this range. There were differences in the seasonality and in the daily activity patterns for the two areas studied but these differences were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Orchid-bees; Euglossinae; Daily activity; Seasonality; Amazonia.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000100003
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Seasonal Abundance and Species Composition of Flower-Visiting Flies Neotropical Entomology
SOUZA-SILVA,MARCONI; FONTENELLE,JULIO C.R.; MARTINS,ROGÉRIO P..
The species of flies that visit flowers to feed were recorded, at the Ecological Station of the Federal University of Minas Gerais (UFMG). Asteraceae, Rhamnaceae, and Boraginaceae were the most visited families. Asteraceae was the richest family and the most visited by flies families and species. The highest diversity of visiting flies was on Baccharis trinervis (Lam.) (H'=1.86). The most diverse families of Diptera were Syrphidae (H'= 2.07) and Bombyliidae (H'= 1.52). The syrphids Ornidia obesa (L.) and Palpada furcata (Wied.) were the most abundant species amongst visitors. Despite the total abundance of Diptera was significantly higher in the rainy season, when a higher number of plants were blooming, there were more families of visitors during the dry...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Diptera; Flower visitors insect; Richness; Seasonality.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000300002
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Seasonal activity of Dinoponera quadriceps Santschi (Formicidae, Ponerinae) in the semi-arid Caatinga of northeastern Brazil Rev. Bras. entomol.
Medeiros,Jeniffer; Araújo,Arrilton; Araújo,Helder F. P.; Queiroz,João Paulo C.; Vasconcellos,Alexandre.
Seasonal activity of Dinoponera quadriceps Santschi (Formicidae, Ponerinae) in the semi-arid Caatinga of northeastern Brazil. We studied seasonal foraging patterns of the queenless ant D. quadriceps (Formicidae, Ponerinae) for 24 months in a Caatinga area of northeastern Brazil, an ecosystem characterized by strong climatic changes throughout the year, in order to determine if regulation of worker activity is based on environmental conditions (air temperature, relative humidity, precipitation) and/or food resources (potential prey: Coleoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera, Orthoptera, Araneae, Chilopoda and Diplopoda). Foraging activity of D. quadriceps varied over the course of both years, with the highest frequency occurring from May to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ants; Environmental factors; Foraging; Neotropical region; Seasonality.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000100013
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Seasonal and subseasonal climate changes recorded in laminated diatom ooze sediments, Adelie Land, East Antarctica ArchiMer
Denis, Delphine; Crosta, X; Zaragosi, S; Romero, O; Martin, B; Mas, Virginie.
A 40 m long sediment core covering the 1000-9600 years BP period was retrieved from the Dumont d'Urville Trough off Adelie Land, East Antarctica, during the MD 130-Images X-CADO cruise. This sedimentary sequence allows the documentation of changes in climate seasonality during the Holocene. Here we show preliminary results of diatom communities, lithic grain distribution and titanium content measured on two 30 cm long sequences of thin sections. The two sequences originate from two different climate regimes, the colder Neoglacial and the warmer Hypsithermal. Proxies were measured at microscale resolution on 25 laminations for the Neoglacial and 14 laminations for the Hypsithermal. The two sequences reveal alternating light-green and dark-green laminae....
Tipo: Text Palavras-chave: East Antarctica; Sea ice; Seasonality; Diatom ooze; Laminated sediments; Holocene; Adelie Land.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2275.pdf
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Seasonal and vertical variations of sinking particle fluxes in the West Caroline Basin ArchiMer
Kawahata, H; Yamamuro, M; Ohta, H.
A sediment trap experiment was carried out in the West Caroline Basin, located in the equatorial western Pacific between influences of the Asian monsoon and the open ocean. Annual mass flux at the shallow trap at Site 1 was 57.10 g m(-2)yr(-1). Generally, the higher flux of organic matter was associated with higher activities of biogenic opal-producing and carbonate-producing plankton communities. In addition, as the organic matter content increases, the organic carbon/carbonate carbon ratio shows a tendency to increase. Carbonate-producing plankton was predominant during periods 1 and 3 (May to July and November to the beginning of December), which could be due to limited silica supply to the euphotic zone. On the other hand, surface sea water was more...
Tipo: Text Palavras-chave: Variation saisonnière; Variation verticale; Flux de particules; Pacifique occidental; Cycle du carbone; Seasonality; Vertical variations; Sinking particle fluxes; Western Pacific; Carbon cycle.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43655/43219.pdf
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Seasonal Asymmetric Price Transmission in Ghanaian Tomato Markets: Adapting Johansen’s Estimation Method AgEcon
Amikuzuno, Joseph; Ihle, Rico.
We assess market integration and price transmission of perishable agricultural produce in Sub-Saharan Africa by studying Ghanaian tomato markets which are characterized by pronounced seasonality in production and trade flows. We analyse the tomato markets of Ghana by simultaneously regarding its five most important markets, Navrongo, Techiman, Kumasi, Tamale and Accra, in a multivariate asymmetric price transmission framework. The estimation of the model is based on a unique dataset and on a modified version of the Johansen estimation procedure which is suitable for estimating such multivariate models. We estimate the price transmission parameters for four regimes which are a combination of the seasonal patterns in trade flows and asymmetries in the...
Tipo: Conference Paper or Presentation Palavras-chave: Asymmetric price transmission; Cointegration; Ghana; Regime-dependent model; Seasonality; Tomato; Vector error-correction model; Crop Production/Industries; Demand and Price Analysis; C32; Q11; Q13; F14; F15.
Ano: 2010 URL: http://purl.umn.edu/96814
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Seasonal dynamics of a drosophilid (Diptera) assemblage and its potencial as bioindicator in open environments Iheringia, Sér. Zool.
Bizzo,Luís; Gottschalk,Marco S; Toni,Daniela C. De; Hofmann,Paulo R. P.
Drosophila Fallen, 1823 (Diptera, Drosophilidae) is for long a well-established model organism for genetics and evolutionary research. The ecology of these flies, however, has only recently been better studied. Recent papers show that Drosophila assemblies can be used as bioindicators of forested environment degradation. In this work the bioindicator potential of drosophilids was evaluated in a naturally opened environment, a coastal strand-forest (restinga). Data from nine consecutive seasonal collections revealed strong temporal fluctuation pattern of the majority of Drosophila species groups. Drosophila willistoni group was more abundant at autumns, whereas D. cardini and D. tripunctata groups were, respectively, expressive at winters and springs, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Drosophila; Seasonality; Bioindicators; Restinga; Brazil.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300001
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Seasonal fecundity and body size in Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae) Neotropical Entomology
Reigada,Carolina; Godoy,Wesley A.C..
In this study the seasonal variation of fecundity, wing and tibia size was investigated in natural populations of Chrysomya megacephala (Fabricius) aiming at determining the variations in life history of the species as a function of seasonality. A relative constant temporal trajectory was found for fecundity, wing and tibia size over twelve months. Strong positive correlations between wing size and temperature, tibia size and temperature and between wing and tibia sizes were observed. The implications of the results for population dynamics of C. megacephala were discussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Blowfly; Population dynamics; Muscomorpha; Seasonality; Bionomics.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000200003
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Seasonal limnetic feeding regime of the “robalo” Eleginops maclovinus (Valenciennes 1830), in the Valdivia river, Chile Gayana
Pequeño,Germán; Pavés,Héctor; Bertrán,Carlos; Vargas-Chacoff,Luis.
The “robalo” Eleginops maclovinus (Valenciennes 1830) is a common fsh in the littoral, estuaries and rivers (under tidal effects zone) of southern South América, including the Falkland islands. The feeding habits of this species is known mainly in the two frst mentioned habitats, where it consumes mostly animals from marine and estuarine origin. However, little is known about its seasonal feeding habits in limnetic environments. It is only assumed that it has to eat preys from freshwater origin. In the present study, 127 specimens of E. maclovinus were analysed, 119 of which had stomach contents. The zoophagic tendency of the species is corroborated, but also animáis from low salinities and limnetic salinities were found to be consumed inthe freshwater...
Tipo: Journal article Palavras-chave: Feeding; Seasonality; Eleginopsidae; Physiological versatility; Chile; Alimentación; Estacionalidad; Eleginopsidae; Versatilidad fisiológica; Chile.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382010000100008
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Seasonal pattern of Chrysomelidae (Coleoptera) in the state of Paraná, southern Brazil Biota Neotropica
Linzmeier,Adelita Maria; Ribeiro-Costa,Cibele Stramare.
The aim of this paper was to describe the seasonal patterns of Chrysomelidae and of its most abundant species at eight sites in different geomorphological and floristic regions in the state of Paraná, southern Brazil. Samples with Malaise traps, from August 1986 to July 1988 were performed. The Chrysomelidae showed seasonal patterns with the highest abundance in the spring and/or summer at all sites, but with variations in the months of highest captures. Photoperiod was the variable that most influenced the seasonality of Chrysomelidae, and along with temperature and relative humidity, determined most of the seasonal patterns of the family at the different sites. Some dominant species of Chrysomelidae showed different seasonal pattern compared to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance; Alticini; Herbivorous insects; Distribution pattern; Seasonality.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100018
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Seasonal pelage color change: news based on a South American Rodent Anais da ABC (AABC)
Camargo,Carolina R.; Colares,Elton; Castrucci,Ana Maria L..
Mammalian seasonalmolting and color change are known to be influencedby photoperiod changes. Calomys laucha, a South American rodent, exhibits seasonal pelage color change; however, unlike Northern hemisphere rodents, which present a gray or brown color during summer and a whitish color during winter, C. laucha pelage changes from an orange color during summer to a dark gray color during winter. Animals maintained for over a year in stationary photoperiod (LD 12:12h, 22ºC) presented orange pelage color during the summer corresponding month (January), and gray color during the winter corresponding month (July). Same age animals were evaluated during summer or winter months, and also showed different colors. Animals exposed for 12 weeks to summer or winter...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Color change; Endogenous rhythm; Seasonality; Molt; Pelage color.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000100009
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Seasonal Price Patterns for Arkansas Soybeans AgEcon
Stark, C. Robert, Jr.; Bryant, Kelly J..
Seasonality is generally regarded as a major feature in soybean market price variations. Recent years in Arkansas have seen considerable construction of on-farm storage, a move that could mitigate the seasonality effect on price variations. A study comparing cash price indices from the past ten years with results from a 1986 Arkansas study and a recent national-level study found that Arkansas soybean prices appear to have followed a consistent and logical pattern around their national average in spite of increased variability and uncertainty.
Tipo: Conference Paper or Presentation Palavras-chave: Seasonality; Soybean; Cash price index; Demand and Price Analysis; Farm Management; Marketing.
Ano: 2010 URL: http://purl.umn.edu/56471
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Seasonal variability of the antimicrobial activity of the essential oil of Lippia alba. Repositório Alice
MACHADO, T. F.; PEREIRA, R. de C. A.; BATISTA, V. C. V..
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Lippia alba; Atividade antimicrobiana; Sazonalidade; Lippia alba; Antimicrobial activity; Seasonality.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/995525
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Seasonal variability of the antimicrobial activity of the essential oil of Lippia alba Rev. Ciênc. Agron.
Machado,Terezinha Feitosa; Pereira,Rita de Cássia Alves; Batista,Valéria Chaves Vasconcelos.
Lippia alba is a shrub of the Verbenaceae family, popularly known as lemon balm. It's essential oil is said to have broad-spectrum antimicrobial activity whose effectiveness varies according to its composition, which is influenced by both biotic and abiotic factors. The present study aimed to evaluate the antimicrobial effectiveness of oil taken from the leaves of L. alba collected at different times of the year, against microorganisms of importance in food. The oil, obtained by hydrodistillation, was tested against standard cultures of Pseudomonas aeruginosa, Salmonella choleraesuis, Escherichia coli, Staphylococcus aureus, Listeria monocytogenes and Listeria innocua using agar diffusion techniques. The different sampling times had a big influence on the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lippia alba; Antimicrobial activity; Seasonality.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000300011
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Seasonal variation in natural populations of Drosophila spp. (Diptera) in two woodlands in the State of São Paulo, Brazil Iheringia, Sér. Zool.
Torres,Felipe Rafael; Madi-Ravazzi,Lilian.
The composition and the seasonality of the natural populations of Drosophila species in relation to the climatic variables temperature and rainfall were analyzed from September 1998 through October 1999 by monthly collections, in two woodlands in the Northwest of the State of São Paulo, Brazil. The diversity dominance component curves were inclined, reflecting low diversity and high dominance of few species. Among the 25 species recorded, Drosophila sturtevanti Duda, 1927 was the most frequent and abundant. On the opposite to data in literature, D. paranaensis Barros, 1950 abundance and frequency were greater than those from D. mercatorum Patterson & Wheeler, 1942. A positive correlation between abundance and rainfall was observed for D. nebulosa...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Abiotic factors; Seasonality; Drosophila; Biodiversity.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000400008
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Seasonal variation in seminal and testicular characteristics of Brazilian somali rams in the hot semi-arid climate of tropical northeast Brazil. Repositório Alice
SIMPLICIO, A. A.; RIERA, G. S.; NELSON, E. A.; PANT, K. P..
The seasons in the 1 year study were classified as rainy, transitional rainydry, dry, and transitional dry-rainy. Semen pH and the consistency of the testes did not vary between seasons or among rams. All other characteristics of semen and testis varied between rams. Significant seasonal differences were observed for ejaculate volume, mass, % motility, forward motility score and concentration of spermatozoa, and linear testis measurements. The total number of spermatozoa per ejaculate did not very seasonal. The magnitude of the seasonal effects was not sufficient to prevent the rams being used for breeding throughout the year.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Raça Somalis; Estacionalidade; Variação sazonal; Ovino; Carneiro; Sêmen; Espermatozóide; Testículo; Fisiologia animal; Sheep; Seasonality; Male animals; Spermatozoa.
Ano: 1982 URL: http://www.alice.cnptia.embrapa.br/handle/doc/514177
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Seasonal variation in the behavior of captive alpine musk deer, Moschus sifanicus, in Xinglongshan Musk Deer Farm, of China Rev. Bras. Zool.
Xiaofeng,Luan; Changjie,Zhao; Cenyi,Hui; Xiuxiang,Meng.
Musk deer farming has the potential to be an effective conservation tool for the protection of musk deer as well as the production of valuable musk. To be successful, this requires a thorough understanding of the behavior of captive musk deer in order to improve their reproductive success and management. Between August 2005 to January 2006, the behavior sampling of 19 male and 13 female captive alpine musk deer, Moschus sifanicus Büchner, 1891, was used to examine the durations of twelve behavioral characteristics during the pre-rut (August to October) and rut seasons (November to January). Both males and females exhibited some seasonal variation in behavior. Males rested and fed more during the pre-rut than the rut and spent more time walking, fighting,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Behavior; Captivity; Seasonality.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600002
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Seasonal variation in the leaf-litter frog community (Amphibia: Anura) from an Atlantic Forest Area in the Salto Morato Natural Reserve, southern Brazil Rev. Bras. Zool.
Santos-Pereira,Manuela; Candaten,Adriane; Milani,Douglas; Oliveira,Frederico B.; Gardelin,Joana; Rocha,Carlos F. D. da.
In this study we provide the first data regarding community parameters of leaf-litter anurans inhabiting a forest floor in the state of Paraná, southern Brazil, including information on community species richness, composition, specific density and biomass. Our study was conducted at Salto Morato Natural Reserve using forty plots of 4 x 4 m for each one of the four seasons (winter, spring, summer and autumn), totaling 2.560 m² of forest floor sampled. We sampled a total of 96 frogs inhabiting the forest floor, belonging to seven species: Brachycephalus hermogenesi (Giaretta & Sawaya, 1998), Ischnocnema guentheri (Steindachner, 1864), Haddadus binotatus (Spix, 1824), Leptodactylus gr. marmoratus, Physalaemus spiniger (Miranda-Ribeiro, 1926),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Rainforest; Density; Richness; Seasonality.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000600008
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