SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Hilário,Sergio D.; Ribeiro,Márcia de F.; Imperatriz-Fonseca,Vera L..

Flight activity of foragers of four colonies of Plebeia remota (Holmberg, 1903) was registered from December 1998 to December 1999, using an automated system (photocells and PLC system). The colonies originated from two different regions: Cunha, state of São Paulo, and Prudentópolis, state of Paraná, Brazil. Flight activity was influenced by different climatic factors in each season. In the summer, the intensity of the correlations between flight activity and climatic factors was smaller than in the other seasons. During the autumn and winter, solar radiation was the factor that most influenced flight activity, while in the spring, this activity was influenced mainly by temperature. Except in the summer, the various climatic factors similarly influenced...

Seasonal variation in natural populations of Drosophila spp. (Diptera) in two woodlands in the State of São Paulo, Brazil

Palavras-chave: Stingless bees; Foraging; Climatic factors; Seasonality; Geographic distribution.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000300004

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...

Reproduction and feeding ecology of Amphisbaena munoai and Anops kingi (Amphisbaenia, Amphisbaenidae) in the Escudo Sul-Rio-Grandense, southern Brazil

Palavras-chave: Brazil; Abiotic factors; Seasonality; Drosophila; Biodiversity.

Ano: 2006

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000400008

Balestrin,Rafael L; Cappellari,Lize H.

This study presents original data on the reproduction and feeding ecology of two syntopic amphisbaenians, Amphisbaena munoai Klappenbach, 1969 and Anops kingi Bell, 1833, from southern Brazil. Sampling was carried out from April 2004 to April 2006 at a highland area located in São Jerônimo and Barão do Triunfo municipalities, Rio Grande do Sul, Brazil. A total of 647 amphisbaenians were collected, 510 specimens of A. munoai and 137 specimens of A. kingi, of which 130 and 93, respectively, had their gonads and gut content analyzed. Both species presented a unimodal pattern of seasonal distribution, sexually mature females with significantly larger snout vent length (SVL) than sexually mature males, and seasonal reproductive cycle. Adults of A. kingi had...

Seasonal variation of the effect of high-carbohydrate and high-protein diets on the intermediate metabolism of Parastacus brasiliensis (Crustacea, Decapoda, Parastacidae) maintained in the laboratory

Palavras-chave: Seasonality; Sexual dimorphism; Diet.

Ano: 2011

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000100013

Dutra,Bibiana K.; Silva,Karina M. da; Zank,Caroline; Conter,Maria R.; Oliveira,Guendalina T..

The goal of this study was to evaluate the effect of a high-carbohydrate diet (HC) and a high-protein diet (HP) on the metabolism of the crayfish Parastacus brasiliensis (Von Martens, 1869), collected in different seasons and maintained in the laboratory for 15 days. Crayfish were collected monthly from January 2002 to January 2004 at São Francisco de Paula, Southern Brazil, in Guarapirá stream. In the laboratory, the animals were kept submerged in aquariums under controlled conditions. They were fed ad libitum, for 15 days with either a HC or HP diet. At the end of this period, haemolymph samples were collected, as were hepatopancreas, gills, and abdominal muscle that were removed for determination of glycogen, free glucose, lipids, and triglycerides. The...

Influence of seasonal changes in daily activity and annual life cycle of Geotrigona mombuca (Hymenoptera, Apidae) in a Cerrado habitat, São Paulo, Brazil

Palavras-chave: Crayfish; Experimental culture; Diet; Metabolism; Seasonality.

Ano: 2008

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400003

Gobatto,André L.; Knoll,Fátima R. N..

The foraging activity of Geotrigona mombuca Smith, 1863 was studied under natural conditions aiming to verify the influence of seasonal changes on daily flight activity and annual cycle of the colony. Daily flight activity was monitored for a year based on the observation and counting of foragers leaving and entering the hive, as well as the kind of material transported and meteorological factors such as day time, temperature and relative humidity. The influence of seasonal changes was evidenced by alterations on daily rhythm of flight activity and by differences on transportation of food resources, building material and garbage. These data indicate that forager behavior is related to daily microclimate conditions and it is synchronized with the...

Seasonal dynamics of a drosophilid (Diptera) assemblage and its potencial as bioindicator in open environments

Palavras-chave: Meteorological factors; Daily activity; Seasonality; Floral resources.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000400006

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...

Reproductive characteristics of characid fish species (Teleostei, Characiformes) and their relationship with body size and phylogeny

Palavras-chave: Drosophila; Seasonality; Bioindicators; Restinga; Brazil.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300001

Azevedo,Marco A..

In this study, I investigated the reproductive biology of fish species from the family Characidae of the order Characiformes. I also investigated the relationship between reproductive biology and body weight and interpreted this relationship in a phylogenetic context. The results of the present study contribute to the understanding of the evolution of the reproductive strategies present in the species of this family. Most larger characid species and other characiforms exhibit a reproductive pattern that is generally characterized by a short seasonal reproductive period that lasts one to three months, between September and April. This is accompanied by total spawning, an extremely high fecundity, and, in many species, a reproductive migration. Many species...

Fish assemblage composition in a tributary of the Mogi Guaçu river basin, southeastern Brazil

Palavras-chave: Neotropical; Reproductive period; Seasonality; Fecundity; Type of spawning; Mode of reproduction; Insemination.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000400020

Oliveira,Alexandre Kannebley de; Garavello,Júlio César.

Fish assemblage composition and seasonal patterns of species abundance were studied in Cabaceiras stream, a tributary of the Mogi Guaçu river in São Paulo State, Brazil. Three stations were sampled monthly from June 1999 to May 2000 using sieves and small trawl net and gill nets. Fifteen fish families, 37 genera and 45 species were captured. Characiformes (27 spp.) and Siluriformes (13 spp.) were the most species-rich orders. Gymnotiformes and Perciformes were represented by two species each, and Synbranchiformes had only a single species. One group of species (approximately 75 %) persisted in the stream throughout the year. A second group (approximately 25 %) contained species that only occupy the stream for a limited period of their life cycle, and...

Diversity of social wasps (Hymenoptera, Vespidae) in Cerrado biome of the southern of the state of Minas Gerais, Brazil

Palavras-chave: Fishes; Seasonality; Stream; Paraná system; Mogi Guaçu river.

Ano: 2003

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212003000200002

Simões,Matheus H.; Cuozzo,Mariana D.; Frieiro-Costa,Fernando A..

An inventory of social wasps in Cerrado biome of the southern of the state of Minas Gerais was performed. A comparison between field and Riparian Forest areas was made in relation to species richness; correlations between diversity, sample methods and environmental factors were conducted. A total of 32 species was registered and Polybia fastidiosuscula de Saussure, 1854 was the most abundant species. The higher richness was in the Cerrado Field, as well as the highest diversity index. The temperature and rainfall had significant correlation with species richness and a significant variation in richness between dry and wet seasons was observed. Polybia fastidiosuscula was more abundant in the Riparian Forest during the dry season and in the Cerrado Field...

The lizard that never sleeps: activity of the pampa marked gecko Homonota uruguayensis

Palavras-chave: Polistinae; Inventory; Composition; Seasonality.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000300007

Vieira,Renata C.; Verrastro,Laura; Borges-Martins,Márcio; Felappi,Jéssica F..

ABSTRACT It is generally assumed that lizards are active whenever climatic conditions are favorable. Homonota uruguayensis (Vaz-Ferreira & Sierra de Soriano, 1961) is the only native gecko - and nocturnal lizard - living in the northern Pampa biome, and its ecology is poorly known. This study aimed at describing this species’ pattern of daily and annual activity and its relation with environmental temperatures. The study was conducted in the extreme south of Brazil (Rosário do Sul, State of Rio Grande do Sul), between May 2010 and January 2011 at a rocky outcrop located in the Pampa biome. The study was carried out in a total of four seasonal field trips, totalizing 1185 hours of field work. The data were collected, both during the day and the night in...

Mutucas (Diptera: Tabanidae) do Pantanal: abundância relativa e sazonalidade na sub-região da Nhecolândia.

Palavras-chave: Nocturnal activity; Uruguayan savanna; Seasonality; Thermal ecology.

Ano: 2020

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212020000100211

Infoteca-e

BARROS, A. T. M.; FOIL, L. D.; VAZQUEZ, S. A. de S..

De junho/92 a maio/94, capturas de mutucas foram realizadas mensalmente em eqüino e utilizando armadilhas do tipo ?canopy?, na fazenda Nhumirim, subregião da Nhecolândia, Pantanal sul-mato-grossense. Capturas no eqüino foram realizadas do crepúsculo matutino ao vespertino, com o auxílio de redes entomológicas, em ambientes de campo e cerradão (1 dia/ambiente/mês), durante o primeiro ano do estudo. Capturas com armadilhas foram realizadas nos mesmos ambientes (10 dias/ambiente/mês), por dois anos. Foram capturadas 6.274 mutucas ao longo do estudo, pertencentes a 25 espécies, 13 gêneros e 3 subfamílias. A espécies mais abundantes foram Tabanus importunus (44,04%), Tabanus occidentalis (15,95%), Tabanus claripennis (9,98%) e Lepiselaga crassipes (7,60%)....

Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)

Palavras-chave: Mutuca; Sazonalidade; Ectoparasita; Tabanídeo; Tabanid; Insect; Seasonality; Deer fly; Ectoparasite; Horse; Horse fly; Vector.; Eqüino; Inseto; Vetor.; Pantanal..

Ano: 2003

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/811098

The Spatiotemporal Dynamics of the Sources and Sinks of CO2 in the Global Coastal Ocean

Impact d’une obligation de débarquement sur les dynamiques couplées écosystème-pêcheurs : approche par modélisation individu-centrée appliquée à la Manche orientale

Roobaert, Alizee; Laruelle, Goulven G.; Landschuetzer, Peter; Gruber, Nicolas; Chou, Lei; Regnier, Pierre.

In contrast to the open ocean, the sources and sinks for atmospheric carbon dioxide (CO2) in the coastal seas are poorly constrained and understood. Here we address this knowledge gap by analyzing the spatial and temporal variability of the coastal air-sea flux of CO2 (FCO2) using a recent high-resolution (0.25 degrees) monthly climatology for coastal sea surface partial pressure in CO2 (pCO(2)). Coastal regions are characterized by CO2 sinks at temperate and high latitudes and by CO2 sources at low latitude and in the tropics, with annual mean CO2 flux densities comparable in magnitude and pattern to those of the adjacent open ocean with the exception of river-dominated systems. The seasonal variations in FCO2 are large, often exceeding 2 mol C m(-2)...

Tipo: Text

Palavras-chave: Coastal seas; Air-sea CO2 exchange; Seasonality; Ocean carbon cycle; Continental shelves.

Ano: 2019

URL: https://archimer.ifremer.fr/doc/00676/78795/81027.pdf

Seasonality of internal gravity waves kinetic energy spectra in the Ligurian Basin

Bourdaud, Pierre.

The objective of this thesis was to anticipate the effects if the EU Landing Obligation (LO) implemented since the beginning of 2015 in the Eastern English Channel (EEC). To achieve these objectives, it was planned to: i) better understand seasonal spatial distribution of commercial species using on-board commercial vessels observation data, ii) compare them with the fine scale fishing effort distribution of EEC bottom otter trawlers (OTB), and iii) develop an individual-based model of fleet-dynamics, DSVM, to be integrated within the ecosystem model OSMOSE to simulate a LO. The usefulness of on-board observation data was proved for a main part of a species sample, using validation from the literature and a geostatistical indicator. Then the comparison of...

Tipo: Text

Palavras-chave: Distribution spatiale; Saisonnalité; Données commerciales; Données de campagnes scientifiques; Manche Orientale; Effort de pêche; Assemblages d’espèces cibles; Obligation de débarquement; Modèle individu-centré; Dynamiques des flottilles; Spatial distribution; Seasonality; Commercial data; Survey data; Eastern English Channel; Fishing effort; Target species assemblages; Landing obligation; Individual-based model; Fleet dynamics.

Ano: 2018

URL: http://archimer.ifremer.fr/doc/00440/55135/56603.pdf

Van Haren, Hans; Millot, Claude.

In the central Ligurian Basin, Western Mediterranean Sea, dense water formation occurs in winter so that near-surface stratification displays a marked seasonality. Consequently, kinetic energy spectra from the surface to intermediate depths are entirely different in summer and winter. In summer, the spectra show a peak near the local inertial frequency (f). The polarization of currents in the internal gravity wave frequency (sigma) band (f < sigma < N, N the buoyancy frequency) resembles internal wave theory (for N >>f). In winter, however, no significant near-inertial (or any other) spectral peak is observed and motions are not polarized at any frequencies, whatever the observation depths. With respect to the energy levels observed in summer,...

Tipo: Text

Palavras-chave: Ligurian Sea; Kinetic energy spectra; Internal gravity wave; Seasonality; Mer Ligure; Spectres d'énergie cinétique; Ondes internes de gravité; SeaVariations saisonnières.

Ano: 2003

URL: http://archimer.ifremer.fr/doc/2003/publication-534.pdf

Mesoscale eddy variability in the southern extension of the East Madagascar Current: Seasonal cycle, energy conversion terms, and eddy mean properties

Seasonal and subseasonal climate changes recorded in laminated diatom ooze sediments, Adelie Land, East Antarctica

Halo, Issufo; Penven, Pierrick; Backeberg, Bjoern; Ansorge, Isabelle; Shillington, Frank; Roman, Raymond.

In this study, we used more than 17 years of satellite altimetry observations and output from an ocean model to investigate the mesoscale eddy variability and forcing mechanisms to the south of Madagascar. Analysis of energy conversion terms in the model has shown seasonality on eddy formation, both by barotropic and baroclinic instabilities: maximum in winter (JJA) and minimum in summer (DJF). The eddies were mainly formed in the upper ocean (0–300 m) and at intermediate depths (800–2000 m) by barotropic and baroclinic instabilities, respectively. The former dominated in the southeastern margin of Madagascar, and the latter to the southwest, where the South-East Madagascar Current (SEMC) separates from the continental shelf. Seasonality of the eddy...

Tipo: Text

Palavras-chave: Mesoscale eddies; Barotropic; Baroclinic instabilities; Seasonality; Eddy properties; Variability.

Ano: 2014

URL: http://archimer.ifremer.fr/doc/00222/33348/31749.pdf