15 articles in this issue
Itamar Luís Gonçalves, Albanin Aparecida Mielniczki-Pereira, Ana Claudia Piovezan Borges, Alice Teresa Valduga (Autor)
Glyoxylate cycle in fatty acid catabolism enhances net production of oxaloacetate, a substrate for gluconeogenesis, in certain bacteria, invertebrates and oilseed in the growth stage. A theoretical model was developed to calculate ATP amount produced in e... see more
José Ariévilo Gurgel Rodrigues, Ismael Nilo Lino de Queiroz, Ana Luíza Gomes Quinderé, Norma Maria Barros Benevides, Ana Maria Freire Tovar, Paulo Antônio de Souza Mourão (Autor)
A. muscoides (Rhodophyta) has three polysulfated fractions (-1, -2 and Am-3). Am-2 displayed anti-inflammation and serpin-independent anticoagulation effects; however, no effect of oligomers on thrombin-generation (TG) has been demonstrated. This study em... see more
Wagner Matos da Silva, Solange de Fátima Lolis, Rodney Haulien Oliveira Viana (Autor)
In the State of Tocantins, there is an abundance of water bodies, and consequently a large range of gallery forests. Despite growing awareness of the importance of these forest resources and the need to conserve them, little is known about the composition... see more
Sara Catunda Pereira, João Fabrício Mota Rodrigues, Diva Maria Borges-Nojosa (Autor)
This study aimed at evaluating the energetic return and feeding time on Philodryas nattereri kept in captivity. Snakes were fed biweekly for 60 days (four feeding trials), in two different feeding treatments (single and multiple prey items). The energetic... see more
Francieli de Fátima Bomfim, Tatiane Mantovano, Leilane Talita Fatoreto Schwind, Fabiana Palazzo, Claudia Costa Bonecker, Fábio Amodêo Lansac-Tôha (Autor)
Processes related to biological invasion of inland waters have become a major issue due to the increasing number of cases associated with the potential effects of invasions. Kellicottia bostoniensis and K. longispina are rotifer species originating from N... see more
Monik da Silveira Suçuarana, Lucena Rocha Virgílio, Lisandro Juno Soares Vieira (Autor)
The trophic structure of fish assemblages associated with banks of aquatic macrophytes in abandoned meander lakes on the river Purus is investigated. Comparisons between lakes and between different periods of the hydrological cycle are undertaken. Fish sa... see more
Thallita Oliveira de Grande, Paulo Henrique Pinheiro Ribeiro, Fabiano Rodrigues de Melo (Autor)
Human perception of local environmental biodiversity and conservation may provide another dimension to understanding the ecology of urban ecosystems. This perception can vary according to the environmental urbanization level and may contribute towards its... see more
Marina Soares Zuliani, Angela Maria Ambrosio, Talitha Mayumi Francisco, Thiago José Balbi, Edson Kiyoshi Okada, Luiz Carlos Gomes (Autor)
Age and growth parameters of Salminus brasiliensis (Curvier, 1816) from the Manso Reservoir and from the river Cuiabá are estimated by their fish scales. Sampling was performed between January and December 2006. There was a linear relationship between the... see more
Éverton Luís Zardo, Everton Rodolfo Behr (Autor)
Aiming to characterize aspects of the trophic ecology of Loricariichthys melanocheilus in the Ibicuí river, bimonthly samples were taken in lotic and lentic ecosystems. Fish were caught and fixed in 10% formalin and dissected for stomach content ana... see more
Sara Iolanda Oliveira da Silva, Gleuvânia Marques Santana, Ila Monize Sousa Sales, João Marcelo de Castro e Sousa, Ana Paula Peron (Autor)
This study aimed to examine the cytotoxicity and genotoxicity of synthetic flavorings, nature identical, Chocolate, Strawberry and Condensed Milk. This evaluation was performed in root meristem cells of Allium cepa L., in exposure times of 24 and 48 hours... see more
Adriano Medeiros de Souza, Pedro de Lima Santana Neto, André Felipe de Araujo Lira, Cleide Maria Ribeiro de Albuquerque (Autor)
This study describes variation in ontogenetic development of the parthenogenetic scorpion Tityus stigmurus based on variations in size, intermolt period, and number of instars. Individuals were created under laboratory conditions (28 ± 3ºC) and subjected ... see more
Kátia Cristina de Melo Tavares Vieira, Jennifer Cardoso Couto, Edson Zanetti, José Marcos Sanches Junior, Ana Paula Alves Favareto (Autor)
Metolachlor is a selective pre-emergent herbicide widely used in agriculture to control weeds. The aim of this study was to evaluate the possible effects of metolachlor on reproductive performance of adult rats, as well as its teratogenic potential when a... see more
Jorge Costa Eiras, Joaber Pereira Júnior, Aurélia Saraiva, Cristina Faria Cruz (Autor)
It is reported the parasitization of Kudoa sp. (Myxozoa, Multivalvulida) within the somatic muscles of the fish Odontesthes bonariensis (Valenciennes, 1835), Micropogonias furnieri (Desmarest, 1823) and Mugil liza Valenciennes, 1836, captured off Rio Gran... see more
Guilherme Pomaro Casali, Ricardo Massato Takemoto (Autor)
Floodplains systems present complex biodiversity and upper Paraná river floodplain retains a wide variety of terrestrial and aquatic species. Serrasalmus marginatus (nonindigenous species) and Serrasalmus maculatus (native species) are part of this biodiv... see more
Huann Carllo Gentil Vasconcelos, Marcos Tavares-Dias (Autor)
Host-parasite interactions between crustaceans and six fish species (Psectrogaster falcata, Ageneiosus ucayalensis, Acestrorhynchus falcirostris, Hemiodus unimaculatus, Serrasalmus gibbus and Geophagus proximus) from a reservoir in eastern Amazon, norther... see more