Distribuição, dieta e ecomorfologia das espécies de peixes no sistema do Ribeirão Grande, no município de Pindamonhangaba, SP

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Estrutura das comunidades de peixes na bacia do rio Iguatemi-MS

Pós-graduação em Ciências Biológicas (Zoologia) - IBRC

Ciclo de vida e estrutura de uma assembléia de peixes teleósteos em um manguezal da Raposa, Maranhão, Brasil

Pós-graduação em Ciências Biológicas (Zoologia) - IBRC

Traços de história de vida de três espécies de peixes em riachos da bacia do rio Corumbataí-SP

Pós-graduação em Ciências Biológicas (Zoologia) - IBRC

Desempenho e características da carcaça e da carne de cordeiros terminados em confinamento com dietas contendo silgens de resíduos de peixes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização das assembléias de peixes do rio Taquari, tributário da represa de Jurumirim (Alto rio Paranapanema, SP): diversidade e atributos ecológicos

Pós-graduação em Ciências Biológicas (Zoologia) - IBB

Análise dos efeitos da exposição a ambientes poluídos na morfologia e no envelhecimento precoce, de brânquias e fígado em peixes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ação moduladora do cortisol e da Aloe vera no sistema imune inato de peixes

Pós-graduação em Aquicultura - FCAV

Influência da hidroelétrica de Tucuruí sobre aspectos da biologia populacional de peixes detritívoros do Rio Tocantins (PA-Brasil)

Pós-graduação em Aquicultura - FCAV

Growth curves of Nile tilapia (Oreochromis niloticus) strains cultivated at different temperatures

Growth of Red, GIFT and Supreme Nile tilapia strains were evaluated. Fish were cultivated in indoor recirculation systems in 0.5 m³ tanks with controlled temperatures of 22, 28 and 30°C. Random samples of 20 fish from each strain (10 fish tank-1) were weighed at day 7, 30, 60, 90 and 120. Exponential model (y=AeKx) and Gompertz model (y = Aexp(-Be-Kx)) were fitted and the estimates parameters were obtained by Weighted Least Squares. At 22°C, Red, GIFT and Supreme strain presented similar growth and fit of exponential model. GIFT and Supreme strain presented higher growth rate at 30°C of cultivation when compared to Red strain. Temperature influences weight and age at the inflection point. The temperature of cultivation influences the growth description of Red, GIFT and Supreme tilapia strains. It changes the age and weight at inflection point and the qualities of growth model fits, changing the variation of the batch.

Absorção de nutrientes e alterações químicas em Latossolos cultivados com plantas de cobertura em rotação com soja e milho

The effects on soil chemical properties brought about by cover crops vary considerably. This study was conducted to evaluate nutrient uptake by five cover crops used for grain, seed and forage production at different seed densities per hectare, as well as uptake by spontaneous vegetation, and their effect on the chemical properties of two Oxisols when grown in rotation with soybean and corn. The experiments were set up in Votuporanga, SP, Brazil and Selvíria, MS, Brazil in March 2008 after conventional soil tillage. A randomized complete block experimental design was used with four replications with the following cover crops at different seed densities: Sorghum bicolor at 6, 7 and 8 kg ha-1; Pennisetum americanum at 10, 15 and 20 kg ha-1; Sorghum sudanense at 12, 15 and 18 kg ha-1; hybrid of Sorghum bicolor with Sorghum sudanense at 8, 9 and 10 kg ha-1; and Urochloa ruziziensis at 8, 12 and 16 kg ha-1. We also used a spontaneous vegetation control. After management of the cover crops, in the first year of study, soybean was sown in no-tillage system and, in the second year, corn was sown, also in a no-tillage system. We evaluated the dry matter yield of different cover crops, nutrient uptake by the cover crops, and the chemical changes in the soil. It was found that in clayey soils with high aluminum content, as in Selvíria, sudan grass at a seed density of 18 kg ha-1, and sorghum at a seed density of 6 kg ha-1, in combination with liming, contributed to reduction of aluminum content and high potential acidity and an increase in base saturation. The different seed densities of each cover crop did not affect the dry matter yield of the cover crop itself, but affected nitrogen uptake of the hybrid Sorghum bicolor with Sorghum sudanense at a seed density of 10 kg ha-1, with lower uptake than at a seed density of 8 kg ha-1. Seed density also affected the organic matter content in the soil with sudan grass, with the seed density of 15 kg ha-1 providing more organic matter content than a seed density of 18 kg ha-1.

Água levemente salinizada aumenta a eficiência da larvicultura de peixes neotropicais

The objective of this work was to evaluate the effect of slightly saline water in an intensive larviculture of tambaqui, matrinxã, apaiari, and piau, during the initial days of active feeding. Larvae were reared in artificial saline water, at concentrations from 0 (freshwater) to 14 g L-1 NaCl (at a 2.0 g L-1), and fed with two portions of Artemia nauplii, following a specific protocol for each species, in a completely randomized design, with 3 replicates. Tambaqui, matrinxã and apaiari larvae can be reared at saline concentrations till 2 g L-1 without impairing growth and survival. Piau larvae were more tolerant and endured saline water until 4 g L-1. At saline concentrations above that, fish mortality increased and reached 100% at 6 g L-1, for matrinxã and apaiari, and at 10 g L-1, for tambaqui. Saline water at 2 g L-1 provided a higher survival for matrinxã, and higher growth for tambaqui, apaiari and piau. These last two species showed a better growth performance with the highest quantity of nauplii. Slightly saline water at 2 g L-1 is beneficial to these studied species, as it optimizes larval growth potential and the use of Artemia nauplii as live food.

Redução prolongada de estímulos modula respostas neofóbicas em peixes

Pós-graduação em Aquicultura - FCAV

Potencial de óleos essenciais de plantas para o tratamento de enfermidade em peixes

Pós-graduação em Aquicultura - FCAV

Estudo metaloproteômico do mércurio em amostras de tecido hepático de peixes coletados na área de influência do AHE JIRAU - Bacia do rio Madeira

Pós-graduação em Biologia Geral e Aplicada - IBB