20 articles in this issue
José Teixeira de Seixas Filho, Márcio Hipólito, Marcelo Maia Pereira, Ana Maria C. R. Pinto da Fonseca Martins, Eliane Rodrigues, Sílvia Conceição Reis Pereira Mello (Autor)
In order to complement the histopathological study of juveniles and tadpoles of the bullfrog, Lithobathes catesbeianus, fed commercial diet used by frog farms in Rio de Janeiro, containing 40% crude protein, we performed necropsy and histopathology of t... see more
Márcia Regina Fragoso Machado, Helena de Oliveira Souza, Valderes Lemos de Souza, Alexandre de Azevedo, Roberto Goitein, André Dias Nobre (Autor)
Centropomus parallelus and Centropomus undecimalis are the most common species of Centropomidae in Brazil. Some authors attribute their failure to grow under in artificial conditions due to limited knowledge on the morphological and functional development... see more
Francisco Jackes Rodrigues da Silva, Francisco Roberto dos Santos Lima, Diego Alves do Vale, Marcelo Vinícius do Carmo e Sá (Autor)
This study determined whether high levels of total ammonia nitrogen (TAN) as NH4+ are harmful to the growth performance of Nile tilapia juveniles. Fingerlings (0.31 ± 0.04 g) were assigned to 30 polyethylene 100-L tanks in a roofed room for 12 rearing wee... see more
Carolina Costa Pera, Naiara Zanatta, Patricia Almeida Sacramento, Vivian de Melo Cionek, Evanilde Benedito (Autor)
Conservation Units (CU) aim to contribute to the balance between human and environmental demand, by protecting natural resources and biological communities. In this study we examined the differences in the attributes of the fish community in four stretche... see more
Gisele Silva Costa Duarte, Geziele Mucio Alves, Fernando Miranda Lansac-Tôha, Luiz Felipe Machado Velho, Fábio Amodêo Lansac-Tôha (Autor)
In some Bromeliaceae species the leaf sheaths form a tank or phytotelma, accumulating water and organic detritus, conditions that allow the establishment of different communities. Thus, this study evaluated the relationship between diameter and volume of ... see more
Daniel Gomes da Rocha, Marcelo Passamani (Autor)
Each kind of trap tends to be selective on species sampled, in a way that each one only reveals part of the abundance and species richness of the community sampled. In this way, in order to know the factors that affect the success of sampling methods is c... see more
Francisco Ítalo Barbosa Chaves, Paulo de Freitas Lima, Renato Carrhá Leitão, Walt Disney Paulino, Sandra Tédde Santaella (Autor)
This study evaluated the trophic conditions of the reservoir located in the urban perimeter of the town General Sampaio, semiarid region of the Ceará State, Brazil and its relationship with seasonal variation in rainfall between 2010 and 2011. It was obta... see more
Stefania Biolo, Liliana Rodrigues (Autor)
We aimed to access the knowledge of the structure of the periphytic algae community on a floating substrate, the macrophyte Ricciocarpus natans (L.) Corda, during two hydrological periods in a connected environment at the Paraná river floodplain. Attached... see more
Carlos Eduardo Copatti, Marcelo Ross, Bethânia Ross Copatti, Laidines Fagundes Seibel (Autor)
This study aimed to evaluate the water quality in the Tigreiro river, Jacuí river Basin, using different approaches. Benthic macroinvertebrates were sampled in July 2010 (winter) and February 2011 (summer) at five sites. In this study were analyzed: micro... see more
Luiz Felipe Machado Velho, Arianne Francielle Silva Brão, Fernando Miranda Lansac-Tôha, Paulo Roberto Bressan Buosi, Bianca Ramos de Meira, Adalgisa Fernanda Cabral, Fábio Amodêo Lansac-Tôha (Autor)
This study examined temporal and spatial (vertical) variations of composition, richness and abundance of the planktonic ciliates community in an urban and eutrophic lake, as well as identified the limnological factors involved in determining the patterns ... see more
Lucilene Finoto Viana, Yzel Rondon Suarez, Sidnei Eduardo Lima-Junior (Autor)
This study aimed at analyzing the influence of different levels of environmental integrity of streams of the Ivinhema river basin (Mato Grosso do Sul State, Brazil) on the diet of A. altiparanae. Samplings were performed from July 2001 to November 2011 at... see more
Leilane Talita Fatoreto Schwind, Juliana Déo Dias, Ciro Yoshio Joko, Claudia Costa Bonecker, Fábio Amodêo Lansac-Tôha (Autor)
Testate amoebae have a great potential for use in scientific researches due to their ecological characteristics such as abundance, wealth, and generation time. In this way, this study aimed to present a scientometric analysis to describe the evolution of ... see more
Maria Virna Aguiar de Oliveira, Dandará Darhlen Lopes Alves, Leonardo Henrique Guedes de Morais Lima, João Marcelo de Castro e Sousa, Ana Paula Peron (Autor)
The objective of this work was to evaluate the cytotoxic effect of the food dyes erythrosine, brilliant blue and red 40 on the cell cycle of Allium cepa L. Each dye was evaluated at doses of 0.4 and 4.0 ml, at exposure times of 24 and 48 hours, in onion r... see more
Elisângela de Fátima Rezende, Maria Cristina Mendes-Costa, Johnson Campideli Fonseca, Alex Oliveira Ribeiro (Autor)
Evaluation of the Genotoxicity of Zinc Oxide-Eugenol Cement in Allium cepa L. Dental materials can induce local and systemic effects. The Allium cepa assay was used to evaluate the genotoxicity and/or cytotoxicity of zinc oxide and eugenol (ZOE) at differ... see more
Suzana de Paiva, Claudio Henrique Zawadzki, Maria Claudia Colla Ruvulo-Takasusuki, Ana Silvia Lapenta, Erasmo Renesto (Autor)
Allozyme electrophoresis analysis were performed in four species of Hypostomus (Loricariidae), H. albopunctatus, H. hermanni, H. regani, e Hypostomus sp. 1/NUP 5612 from the Ivaí river, a tributary of the upper Paraná river. The study of 14 loci revealed ... see more
Fabíola Carvalho Santos, Vânia Helena Techio, Aline Silva Freitas, Evaristo Mauro de Castro, Lisete Chamma Davide, Fausto Souza Sobrinho (Autor)
Studies on morphological plasticity are extremely important to plant breeding seeking to optimize genotype interactions with their environments. The present study evaluated 38 genotypes of Brachiaria ruziziensis cultivated during the rainy (October to Mar... see more
Clarice Machado-Santos, Monalisa Jales Teixeira, Armando Sales, Marcelo Abidu-Figueiredo (Autor)
The broad-snouted caiman, Caiman latirostris, is widely distributed in countries of South America. In Brazil it is considered an endangered species because of natural habitat destruction and illegal hunting. In reptiles, the thyroid gland plays an i... see more
Talita Laurie Lustosa do Carmo, Rodrigo de Souza Amaral, Fernando Cesar Weber Rosas, José Anselmo d'Affonsêca Neto, Laura Reisfeld, Vera Maria Ferreira da Silva (Autor)
In this study we report the hematological, biochemical and hormonal parameters in a juvenile male Amazonian manatee measured before transport, immediately after transport, and during adaptation to a new facility. The animal was transported from Manaus, Am... see more
Marcos Tavares-Dias, Ligia Rigôr Neves, Douglas Anadias Pinheiro, Marcos Sidney Brito de Oliveira, Renata das Graças Barbosa Marinho (Autor)
This work is the first study on parasitic fauna of Curimata cyprinoides Linnaeus, 1766 (Curimatidae) and the host-parasite relationship. The total of 154,740 parasites such as Ichthyophthirius multifiliis (Ciliophora), trophozoite of Spironucleus sp. (Hex... see more
Kadry Nabeh Abdel Khalik, Iman Hussien Al Gohary (Autor)
The seed morphology and seed proteins of 11 Vicia taxa from Egypt were studied. Macro- and micro-morphological characters, including seed shape, color, size, hilum shape and seed sculpture were described and analyzed. The secondary sculpture of the cell w... see more