Results 31 to 40 of about 3,438 (182)

Probiotic in feeding of juvenile matrinxã (Brycon amazonicus): economic viability - doi: 10.4025/actascianimsci.v34i3.13257

open access: yesActa Scientiarum: Animal Sciences, 2012
This study aimed to analyze the economic feasibility of supplement probiotics Bacillus subtilis to “matrinxã” Brycon amazonicus, raised in cages. The experiment was conducted at the Polo Regional Vale do Ribeira, in Pariquera-açu municipality, São Paulo ...
Danielle de Carla Dias   +5 more
doaj   +6 more sources

LEVAMISOLE MODULATES THE CELL-MEDIATED IMMUNITY OF MATRINXí, Brycon amazonicus

open access: yesBoletim do Instituto de Pesca, 2019
The use of immunomodulators is an alternative to improve the immune system of fish and avoid the excessive use of antibiotics. Levamisole is a synthetic anthelmintic which promotes a potent immunostimulation on innate and acquired variables of fish.
Jaqueline Dalbello BILLER   +4 more
doaj   +2 more sources

Biología reproductiva de Hypophthalmus edentatus (Pimelodidae) y Brycon amazonicus (Bryconidae) en la cuenca del Putumayo, región Loreto, Perú [PDF]

open access: yesRevista Peruana de Investigación Agropecuaria
La pesca es una de las principales actividades económicas en el río Putumayo, a pesar de la poca información biológica generada de las especies explotadas.
Luis Olabo Sotelo-Lescano   +3 more
doaj   +2 more sources

Morphometric prediction of maximum cannibal-prey size for larvae of matrinxã, Brycon amazonicus (Spix and Agassiz, 1829) [PDF]

open access: yesBrazilian Journal of Biology
Cannibalism among fish is an interaction affecting both intra- and interspecific relationships in aquatic environments. It is related to the size and developmental stage, with prey size determined by morphometric measurements.
R. L. Muller   +2 more
doaj   +3 more sources

Velocidade crítica de natação (Ucrit) de matrinxã (Brycon amazonicus) após exposição à hipoxia Critical swimming speed of matrinxã (Brycon amazonicus) exposed to hypoxia

open access: yesActa Amazonica, 2010
A primeira resposta ao estresse é a fuga, que depende do desempenho natatório e de ajustes fisiológicos. Este estudo investigou a velocidade crítica de natação (Ucrit) de matrinxã após exposição à hipoxia.
Marcio Soares Ferreira   +2 more
doaj   +3 more sources

Take my breath away: Defining the oxygen saturation threshold for fish cortisol stress response. [PDF]

open access: yesJ Fish Biol
Abstract Human activities are affecting the number, size and severity of hypoxic zones in aquatic ecosystems. As oxygen is one of the most important abiotic factors affecting fish biology, exposure to low levels of dissolved oxygen may lead to a reduction in fitness.
Alfonso S   +4 more
europepmc   +2 more sources

Anthropogenic Barriers Limit Fish Access to Essential Habitats in the Amazon in the Face of Climate Change. [PDF]

open access: yesGlob Chang Biol
Rivers across the Amazon Basin are increasingly threatened by climate change and dam construction, which restrict fish movements. We combined climate projections with river‐network connectivity analyses to identify where suitable habitats for frugivorous and socioeconomically important fish are likely to persist and where access may be lost due to ...
Yofukuji KY   +11 more
europepmc   +2 more sources

Embryonic and larval development of Brycon amazonicus (SPIX & AGASSIZ, 1829) [PDF]

open access: yesBrazilian Journal of Biology, 2016
Abstract The objective of this study was to describe the embryonic and larval development of Brycon amazonicus, featuring the main events up to 50 hours after fertilization (AF). The material was provided by the Aquaculture Training, Technology and Production Center, Presidente Figueiredo (AM).
Nakauth, A. C. S. Sampaio   +4 more
openaire   +5 more sources

Fisheries in a border area of the Moxos Lowlands (Bolivia) after invasion of Arapaima gigas

open access: yesAquaculture, Fish and Fisheries, Volume 3, Issue 2, Page 196-210, April 2023., 2023
We characterized fisheries in the area of the port city of Riberalta (upper Madeira River basin) and evaluated the contribution of an invasive species (Arapaima gigas) to the landings. A. gigas represented 57.6% of the overall economic value of fish in the region.
Gabriela Rico Lopez   +4 more
wiley   +1 more source

Growth, red blood cells, and gill alterations of red pacu (Piaractus brachypomus) fingerlings by chronic exposure to different total suspended solids in biofloc

open access: yesJournal of the World Aquaculture Society, Volume 53, Issue 3, Page 652-668, June 2022., 2022
Abstract Chronic exposure to high biofloc total suspended solids (TSS) could affect growth, red blood cells, and generate gill alterations in fish. Red pacu, Piaractus brachypomus, fry (2.7 ± 0.5 g weight) were exposed to different biofloc TSS concentrations with low (T1: 200–300), and medium (T2: 400–600 mg/L) levels and compared to a treatment ...
Beatriz Elena Angeles‐Escobar   +2 more
wiley   +1 more source

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