Results 151 to 160 of about 924 (168)

Forced sustained swimming exercise at optimal speed enhances growth of juvenile yellowtail kingfish (Seriola lalandi). [PDF]

Front Physiol, 2014
Palstra AP, Mes D, Kusters K, Roques JA, Flik G, Kloet K, Blonk RJ.   +6 more
europepmc   +1 more source

Genetic characterization of cassava (Manihot esculenta) landraces in Brazil assessed with simple sequence repeats. [PDF]

Genet Mol Biol, 2009
Siqueira MV, Queiroz-Silva JR, Bressan EA, Borges A, Pereira KJ, Pinto JG, Veasey EA.   +6 more
europepmc   +1 more source

Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol

Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2008
In this study we measured plasma cortisol, plasma glucose, plasma sodium and potassium, and liver and gill hsp70 levels in juvenile matrinxã (Brycon amazonicus) subjected to a 96 h exposure to phenol (0, 0.2, and 2.0 ppm), and the effect of this exposure on their ability to respond to a subsequent handling stress.
Hori, Tiago S.F., Avilez, Ive M., Iwama, George K., Johnson, Stewart C., Moraes, Gilberto, Afonso, Luis O.B.   +5 more
openaire   +4 more sources

Cadmium-induced disruption of environmental exploration and chemical communication in matrinxã, Brycon amazonicus

Aquatic Toxicology, 2008
The effects of cadmium exposure on both environment exploration and behavioral responses induced by alarm substance in matrinxã (Brycon amazonicus), a fish species endemic to the Amazon basin, were investigated. Fish exposed to 9.04+/-0.07 microg/L waterborne cadmium for 96h followed by 24h depuration period in clean water, were video-recorded for 15 ...
Honda, Rubens Tomio, Fernandes-De-Castilho, Marisa, Val, Adalberto Luis   +2 more
openaire   +4 more sources

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Social relationship as inducer of immunological and stress responses in matrinxã (Brycon amazonicus)

Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2009
Matrinxã (Brycon amazonicus) is a freshwater neotropical fish species with a social interaction and aggressive behavior, especially in crowded environments. This species' social structure is established by agonistic interactions, which increase significantly at the fifth hour, when compared to the first and second hours of confinement, when each ...
Francielle Bonet, Ferraz, Levy Carvalho, Gomes   +1 more
openaire   +2 more sources

Ultrastructure of the germ cells in the testis of matrinxã, Brycon cephalus (Teleostei, Characidae)

Tissue and Cell, 1999
This study describes at ultrastructural level the germ cells in the testis of matrinxã (Brycon cephalus) raised in captivity. The specimens 'matrinxã' were maintained in four breeding tanks of 200 m(2), at the Aquaculture Research Center at Vale do Ribeira-CEPAR, from Fishery Institute, in Pariquera-Açu City, São Paulo, Brazil.
E, Romagosa, M Y, Narahara, M I, Borella, S F, Parreira, N, Fenerich-Verani   +4 more
openaire   +2 more sources

Effects of phenol in antioxidant metabolism in matrinxã, Brycon amazonicus (Teleostei; Characidae)

Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2008
Parameters of the antioxidant defense systems of Brycon amazonicus (matrinxã--a neotropical fish) exposed to phenol for 96 h plus the recovery over 1 and 2 weeks were studied in erythrocytes and liver. Hematocrit increase was observed during phenol exposure and recovery for 1 week.
Ive Marchioni, Avilez, Tiago Silvestre Fernandes, Hori, Luciana Cristina, de Almeida, Araceli, Hackbarth, Jayme, da Cunha Bastos Neto, Vera Lucia Freire, da Cunha Bastos, Gilberto, Moraes   +6 more
openaire   +2 more sources

Hematological responses of the Neotropical teleost matrinxã (Brycon cephalus) to environmental nitrite

Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2004
Environmental increase in nitrite impairs the function of several aquatic species, including fishes. Nitrite reacts with hemoglobin yielding the non-functional methemoglobin (metHb), and many physiological disturbances can arise. The physiological mechanisms to cope with nitrite are still unclear in fish.
Ive M, Avilez, Alexandre E, Altran, Lúcia H, Aguiar, Gilberto, Moraes   +3 more
openaire   +2 more sources

Lower light intensity reduces larval aggression in matrinxã, Brycon amazonicus

Behavioural Processes, 2018
Brycon amazonicus shows a high frequency of aggressive behavior, which can be a limiting factor in intensive farming systems. Environmental changes can modulate the social interactions of fish and reduce aggression during the different stages of production.
Lopes, Ana Caroliny C., Villacorta-Corrêa, Marle Angélica, Carvalho, Thaís Billalba   +2 more
openaire   +3 more sources

Dietary l-tryptophan alters aggression in juvenile matrinxã Brycon amazonicus

Fish Physiology and Biochemistry, 2011
This study evaluated the effect of dietary supplementation with L: -tryptophan (L-TRP), a serotonin precursor, on the aggressiveness of juvenile matrinxã Brycon amazonicus. Fish were kept in individual aquaria for 7 days receiving the diets: D1 (control: 0.47% of TRP), D2 (0.94% of TRP), D3 (1.88% of TRP), and D4 (3.76% of TRP).
Bejo Wolkers, Carla Patricia, Serra, Monica, Hoshiba, Marcio Aquio, Urbinati, Elisabeth Criscuolo   +3 more
openaire   +3 more sources