15 articles in this issue
Luciana Miashiro, Julio Vicente Lombardi, Cacilda Thais Janson Mercante (Autor)
The purpose of this study is to perform toxicity tests with microalgae Pseudokirchneriella subcapitata (Chlorophyceae) using inland water samples to evaluate the impact caused by aquaculture. Six field samples were collected ranged November 2006 to March ... see more
José Ariévilo Gurgel Rodrigues, Ana Luíza Gomes Quinderé, Ismael Nilo Lino de Queiroz, Chistiane Oliveira Coura, Norma Maria Barros Benevides (Autor)
Studies on macromolecules isolated from marine algae suggested sulfated polysaccharides (SPs) as possible molecular markers for species. We evaluated isolated and fractionated SPs from the green marine algae Caulerpa cupressoides, C. prolifera and C. race... see more
Michele de Faveri Gimenes, Alice Michiyo Takeda, Evanilde Benedito (Autor)
This study aimed to identify potential sources of organic matter in sediment, using stable isotopes of carbon (delta13C) and nitrogen (delta15N). Sediment samples were gathered from the margin and in center of three subsystems: Ivinheima, Paraná and Baia,... see more
Aline de Souza Amorim, Magnólia Fernandes Florêncio de Araújo (Autor)
The semi-arid region of Rio Grande do Norte State, in northeast Brazil exhibits specific physical-climatic aspects: the climate is very hot, with mean annual rainfall of 550 mm, characterized by periodic drought and uneven distribution of rains. Due to th... see more
Fabiano Aguiar da Silva, Emmanuel de Melo Nascimento, Fernando Marques Quintela (Autor)
The present study aimed to investigate the feeding habits of Lontra longicaudis in a pool system within the Private Reserve of Natural Patrimony (RPPN) Usina Maurício, located in Paraíba do Sul river basin, Atlantic Forest of southeastern Minas Gerais St... see more
Ana Paula Capelari Fernandes, Louizi de Souza Magalhães Braghin, Judit Nedli, Fabiana Palazzo, Fábio Amodêo Lansac-Tôha, Claudia Costa Bonecker (Autor)
Zooplankton is able to respond promptly to environmental changes, producing resting forms in order to maintain populations when the conditions become unfavorable. The hatchling of the resting eggs was assessed in environments from the upper Paraná river f... see more
Karen Zauner Gimenes, Luciene Aparecida Leite-Rossi, Marcela Bianchessi Cunha-Santino, Irineu Bianchini Junior, Susana Trivinho-Strixino (Autor)
The aim of this study is to evaluate the kinetics of aerobic decomposition of Saccharum officinarum and Talauma ovata leaves. For each species, decomposition chambers (leaves and water) were set up, which were maintained under controlled conditions. Each ... see more
Ernesto Frederico da Costa Foppel, Stephen Francis Ferrari (Autor)
The Antillean manatee (Trichechus manatus) is the most threatened aquatic mammal in Brazil. It was considered to be extinct in Sergipe until 1998, when a re-introduced animal (Astro) arrived. Given plans for the re-introduction of more animals, a survey w... see more
Rafael Guerra Lund, Rosana Serpa, Patrícia da Silva Nascente, Gladis Aver Ribeiro, Rogério Antonio Freitag, Francisco Augusto Burkert Del Pino (Autor)
In vitro tests could be a valuable tool for the evaluation of medicinal plants’ antimicrobial activity. Mentha arvensis of the Lamiaceae family is one of the most frequently traditional plants used in Brazil. Hydroalcoholic extracts of M. arvensis were an... see more
Ajai Kumar Srivastav, Sanjay Kumar Srivastava, Sarojni Tripathi, Diwakar Mishra, Sunil Kumar Srivastav (Autor)
In the present study, an organophosphorus compound Coroban (active ingredient chlorpyrifos – E.C. 20%) was used. In short-term exposure the fish were subjected to 0.8 of 96h LC50 value of chlorpyrifos (1.76 mg L-1) for 96h. In long-term exposure the exper... see more
Elzira Diniz de Moraes, Cássia Thaís Bussamra Vieira Zaia, Dimas Augusto Morozin Zaia, Angelo Alexander Torres dos Santos, Rachel Cezar de Andrade Ribeiro, Andreia Lopes da Silva (Autor)
Sex differences related with pain have been studied and evidences suggesting influence of sex steroid hormones on the thresholds of pain. Experimental nociception has been test using formalin as a model of nociceptive stimulus. Association of stress, pain... see more
André Rodrigues da Cunha Barreto Vianna, Flávia Azevedo Cavalanti de Melo, Marcelo Ismar Silva Santana, Hildebrando Gomes Benedicto, Frederico Ozanam Carneiro e Silva, Renato Souto Severino, Eduardo Mauricio Mendes de Lima (Autor)
Twenty-eight fowls (Gallus gallus domesticus) of the Red Bro Cou Nu lineage were studied. They were about 35 days old and had their arteries filled with Neoprene Latex 450", aqueous solution at 50%, stained with specific pigment (Globo S/A, Tintas e Pigme... see more
Patrícia de Nazaré Cardoso Furlanetto, Gisele Caroline Novakowski, Edmar Antônio Correa (Autor)
Herein, we present results from an ethnobotanical study (from February to August 2009) aiming the improvement and rationalization of medical practices, based on popular use of plants. We applied semi-structured interviews to 220 families from the urban ar... see more
Maria da Graça de Souza Lima, Nei Fernandes Lopes, Paulo Dejalma Zimmer, Geri Eduardo Meneghello, Cristina Rodrigues Mendes, Luciano do Amarante (Autor)
The southern State of Rio Grande do Sul (RS) is the main rice producer in Brazil with a 60% participation of the national production and 86% participation of the region. Rice culture irrigation system is done by flooding, which leads to soil salinization,... see more
Vanessa Doro Abdallah, Rodney Kozlowiski de Azevedo, José Luis Fernando Luque (Autor)
Current essay describes three new Monogenean species, namely, Cosmetocleithrum striatuli sp. nov., Jainus leporini sp. nov. and Rhabdosynochus guanduensis sp. nov., parasites on the gills of Trachelyopterus striatulus (Steindachner, 1877), Leporinus copel... see more