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Effect of fish density during transportation on stress and mortality of juvenile Tambaqui Colossoma macropomum
(2003-03-01)
The increased demand for juvenile tambaqui Colossoma macropomum for grow-out ponds and stocking programs in the Amazon state of Brazil has increased the transportation of this species. This study was designed to determine ...
Deepwater fish assemblages at Isla del Coco National Park and Las Gemelas Seamount, Costa Rica
(Universidad de Costa Rica, 2012)
Effect of fish density during transportation on stress and mortality of juvenile Tambaqui Colossoma macropomum
(2003-03-01)
The increased demand for juvenile tambaqui Colossoma macropomum for grow-out ponds and stocking programs in the Amazon state of Brazil has increased the transportation of this species. This study was designed to determine ...
Net cages enhance golden mussel (Limnoperna fortunei) larval density and condition factor
(Wiley-Blackwell, 2019-09-01)
Cage fish farming is an important economic activity in Brazil where tilapia (Oreochromis niloticus) is the main cultivated species. To investigate the cage fish farm as a vector for golden mussel invasion, we hypothesised ...
Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
(Springer, 2014-07)
Changes in fish densities recorded over 14 years (1996-2009) were studied for effects of long-term variation of the hydrologic regime. We collected field data with an echo sounder in scour holes of minor channels draining ...
Drifting in a free-flowing river: Distribution of fish eggs and larvae in a small tributary of a Neotropical reservoir
(Revista Biota Neotropica, 2021-01-01)
We investigated spatial and temporal variations in the distribution of fish eggs and larvae in the Guarei River, a free-flowing tributary located in the upper section of the Jurumirim Reservoir, Paranapanema River, Brazil. ...
Nested sampling: an improved visual-census technique for studying reef fish assemblages
(2008)
Our aim was to devise visual sampling protocols to estimate densities in a morphologically and behaviorally diverse assemblage of reef fishes. The focus was on a design that is cost-effective and produces relatively accurate ...
The 'pole-hooking' method: A novel and economical technique for in situ tagging small to medium-sized fishes
(Elsevier Science, 2008-06)
We describe a new manual procedure for catching and tagging fish underwater, the 'pole-hooking' method, and demonstrate and discuss its advantages over standard tagging techniques (i.e. hook-and-line fishing). The new ...
Physiological effects of stocking density on the fish Piaractus mesopotamicus fed with red seaweed (Pyropia columbina) and β-carotene-supplemented diets
(Wiley Blackwell Publishing, Inc, 2020-02-14)
This study aimed at investigating the physiological responses of Piaractus mesopotamicus exposed to high stocking density and the potential protective role of supplemented diets. Fish were fed with basal, red seaweed ...
Influence of stocking density on growth performance and welfare of juvenile tilapia (Oreochromis niloticus) in cages
(Arquivo Brasileiro Medicina Veterinaria Zootecnia, 2017-01-01)
Intensification of tilapia production can cause negative implications on performance and welfare of fishes. Thus, it is essential to determine a correct density for optimal production. This study aimed to evaluate performance ...