Reproduction and population structure of Achelous spinimanus (Crustacea: Portunoidea) in the northern coast of São Paulo, Brazil, and influence of environmental factors

Captive reproduction is one of the problems faced in aquaculture requiring the manipulation of environmental factors and/or hormonal treatment. Thus, we seek to verify experimentally which gonadal changes were present in mature individuals of Astyanax altiparanae arising from decreased water level. Collections were made every four hours, initiated four hours before and finished 28 hours after stimulation, at the Fish Farming Station of Companhia Energética de São Paulo, São Paulo, Brazil. The gonads were analyzed by light microscopy. The females had ovaries in the spawning capable phase until 12h; in 16h, in a more advanced stage of spawning capable phase; and, from 20h, in the regressing phase. Males had testes in the spawning capable phase until 8h; in 12h, in a more advanced stage of spawning capable phase; and, from 16h, the return to the spawning capable phase. The morphological description was corroborated by the proportion of cell classes. Females presented variation on the gonadosomatic index, but it was not found an emptying of the gonad for neither sex. The process of inducing reproduction with water level drawdown was considered satisfactory, since both sexes presented a reduction in the number of mature gametes at the end of the sample period.

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Density and diversity of filamentous fungi in the water and sediment of Araçá bay in São Sebastião, São Paulo, Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2017-0416 ◽

2018 ◽

Vol 18 (1) ◽

Cited By ~ 2

Author(s):

Sonia Assami Doi ◽

Aline Bartelochi Pinto ◽

Maria Carolina Canali ◽

Daiane Raquel Polezel ◽

Roberta Alves Merguizo Chinellato ◽

...

Keyword(s):

Filamentous Fungi ◽

Chemical Properties ◽

Morphological Characteristics ◽

Sao Paulo ◽

Northern Coast ◽

São Paulo ◽

Mangrove Swamp ◽

Sediment Samples ◽

Water And Sediment ◽

Pharmaceutical Industries

Abstract Araçá Bay, located in the city of São Sebastião, São Paulo, Brazil, is a protected area of substantial complexity. It represents the last remaining mangrove swamp preserve between the cities of Bertioga and Ubatuba on the northern coast of São Paulo State. This mangrove swamp has specific physical and chemical properties, and it shelters a wide variety of life, including fungi. These microorganisms are present in a variety of species with different morphophysiological features, and they have the ability to produce enzymes of biotechnological importance. The goal of this study was to quantify, isolate, and identify filamentous fungi in water and sediment samples from the Araçá Bay mangrove swamp in São Sebastião. Two samplings were performed in the summer and two were performed in the winter. The samples were collected from intertidal zones, and dissolved oxygen (DO), temperature, salinity, and pH were measured in situ. The spread plate technique was used to inoculate the samples collected on plates with a potato dextrose agar (PDA) medium. A total of 208 colonies (68 from water samples and 140 from sediment samples) were isolated, and they were identified based on their morphological characteristics. Filamentous fungus density was higher in the sediment than in the water, and the samplings performed in the winter revealed a higher density than those performed in the summer. Though some of the environmental parameters were not ideal for fungal development, a high quantity of growth was nevertheless observed. When the isolated colonies were analyzed, the greatest diversity and species richness were found in the summer samples. The genera identified in all of the samples were Aspergillus, Penicillium, Cladosporium, and Fusarium. The pathogenic species found from these genera were Aspergillus fumigatus, A. terreus, Penicillium citrinum, and P. chrysogenum. These species are also able to produce enzymes that offer a variety of applications. The fungal community described herein represents the diversity found in this mangrove swamp during the period studied. Many of the fungus species found are pathogenic and may be useful due to their ability to produce specific enzymes applicable in the biotechnological and pharmaceutical industries.

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Abundance and temporal-spatial distribution of the rock shrimpSicyonia dorsalis Kingsley, 1878 (Decapoda, Penaeoidea) from the northern coast of Säo Paulo state, Brazil

Senckenbergiana maritima ◽

10.1007/bf03043870 ◽

2008 ◽

Vol 38 (1) ◽

pp. 75-82 ◽

Cited By ~ 10

Author(s):

Antonio L. Castilho ◽

Michèle Furlan ◽

Rogério C. Costa ◽

Vivian Fransozo

Keyword(s):

Spatial Distribution ◽

Sao Paulo ◽

Northern Coast ◽

São Paulo ◽

Paulo State ◽

São Paulo State

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Cigarrinhas dos Citros, Vetoras da Bactéria Xylella fastidiosa Wells et al.: Pragas Potenciais para a Citricultura Sergipana

EntomoBrasilis ◽

10.12741/ebrasilis.v8i1.403 ◽

2015 ◽

Vol 8 (1) ◽

pp. 01-07

Author(s):

Ruberval Leone Azevedo ◽

Marcel Faria Lima

Keyword(s):

Xylella Fastidiosa ◽

Sao Paulo ◽

The State ◽

Northern Coast ◽

São Paulo ◽

Citrus Industry ◽

National Production ◽

Potential Pest ◽

The Many

A citricultura no Brasil exerce um papel de grande importância econômica, social, gerando empregos, renda e desenvolvimento. O Brasil é o maior produtor mundial de citros, o Estado de Sergipe destaca-se em 5º lugar nacional em produção. Dentre os vários problemas fitossanitários enfrentados pela citricultura brasileira está a Clorose Variegada dos Citros (CVC), conhecida como amarelinho, causada pela bactéria Xylella fastidiosa Wells et al. A CVC foi identificada oficialmente no Brasil, em 1987, em pomares do Triângulo Mineiro e do Norte e Noroeste do Estado de São Paulo. No Nordeste, foi constatada em 1996 em Sergipe no município de Boquim, e em 1997 na Bahia, nos municípios de Rio Real e Itapicuru. O objetivo foi revisar a literatura sobre as espécies de cigarrinhas vetores da CVC, e verificar se ocorrem no estado de Sergipe. Os primeiros sintomas são vistos nas folhas, passam posteriormente para os frutos e acabam afetando toda a planta, e para serem percebidos pode levar entre 5 meses e 2 anos. Os principais vetores da X. fastidiosa em citros são as cigarrinhas da família Cicadellidae. No Brasil já foram confirmadas 12 espécies de cigarrinhas vetoras. Para o estado de Sergipe, são escassas a informações sobre Cicadellidae vetoras, os dados são limitados ao Litoral Norte da Bahia, com exceção de vaga citação sobre quatro gêneros (Oncometropia, Acrogonia, Dilobopterus e Homolodisca) e três espécies (Homolodisca ignorata Melichar, Acrogonia sp. e Homolodisca spottii Takiya, Cavichioli & McKamey). Citrus leafhoppers, Vectors of of Bacterium Xylella fastidiosa Wells et al.: Potential Pest of Citrus Crops in Sergipe State Abstract. The citrus industry in Brazil plays a role of great economic, social, generating jobs, income and development. Brazil is the largest producer of citrus, the State of Sergipe stands out in 5th place in national production. Among the many pest problems faced by Brazilian citrus is Citrus Variegated Chlorosis (CVC), known as the yellowing caused by the bacterium Xylella fastidiosa Wells et al. The CVC was officially identified in Brazil in 1987, in orchards of “Triângulo Mineiro” and North and northwest of the state of São Paulo. In the Northeast Region of Brazil, was found in 1996 in the municipality of Boquim Sergipe, and Bahia in 1997, the municipalities of Rio Real and Itapicuru. The aim was to review the literature on the species of leafhoppers vectors of CVC, and verify that occur in the state of Sergipe. The first symptoms are seen in the leaves, then go for the fruits and end up affecting the entire plant, and to be perceived can take between five months and two years. The main vectors of X. fastidiosa in citrus are the sharpshooters of the family Cicadellidae. In Brazil 12 sharpshooters species have already been confirmed. For the state of Sergipe, is scarce information about the Cicadellidae vectors, the data are limited to the northern coast of Bahia, except for vague quote about four genus (Oncometropia, Acrogonia, Dilobopterus and Homolodisca) and three species (Homolodisca ignorata Melichar, Acrogonia sp. and Homolodisca spottii Takiya, Cavichioli & McKamey).

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Evaluation of wind potential in Caraguatatuba, northern coast of Sao Paulo

Labor e Engenho ◽

10.20396/lobore.v7i4.165 ◽

2013 ◽

Vol 7 (4) ◽

pp. 31-37

Author(s):

Dante Bachi Junior ◽

Geraldo Lucio Tiago Filho ◽

Maria Rachel Russo Seydell

Keyword(s):

Sao Paulo ◽

Northern Coast ◽

São Paulo ◽

Wind Potential

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Stray dogs in urban fragments: relation between population’s perception of their presence and socio-demographic factors

Pesquisa Veterinária Brasileira ◽

10.1590/1678-5150-pvb-4293 ◽

2018 ◽

Vol 38 (1) ◽

pp. 89-93 ◽

Cited By ~ 4

Author(s):

Aline G.A. Guilloux ◽

Ligia I. Panachão ◽

Ana J.S. Alves ◽

Carolina B. Zetun ◽

Alex J.F. Cassenote ◽

...

Keyword(s):

Environmental Factors ◽

Demographic Factors ◽

Sao Paulo ◽

São Paulo ◽

Convenience Sample ◽

Stray Dogs ◽

Stray Dog ◽

Socio Demographic Factors ◽

Responsible Ownership ◽

Waste Handling

ABSTRACT: Stray dogs are associated with environment and public health impacts. São Paulo is a city with approximately 2.5 million owned dogs and until the time of writing no studies describing the distribution of the stray dog population have been conducted in this city. Therefore, no scientific support for intervention plans is available. The objective of this study was to evaluate the association of local sociodemographic and environmental factors with the population perception of presence of stray dogs in urban fragments of São Paulo city. A convenience sample of six urban fragments was selected. In-depth interviews were performe, using a systematic random sample of households in each study area, between October/2010 and January/2011 to identify socio-demographic factors of interest and determine the population’s perception of stray dogs. Additionally, the presence of stray dogs was estimated by photographic mark-recapture method. The degree of human-dog proximity and environmental factors such as waste handling were associated to the sighting of stray dogs. Stray dogs were observed in two of the six study areas, agreeing with the greater population perception of this issue on those areas. Intervention in these factors and encouragement of responsible ownership are two potential solutions for management and reduction of problems associated with the presence of stray dogs.

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