Results 91 to 100 of about 4,289 (221)

Variaciones de la abundancia de peces del valle del rio Parana (Argentina) [PDF]

open access: yes, 1990
L'abondance et la répartition des poissons dans le Parana sont influencées par les facteurs de l'environnement comme la géomorphologie et les crues exceptionnelles. En aval de la confluence du Parana et du Paraguay, de même que dans la basse vallée de ce
Oldani, N.O.
core  

Progress in the environmental risk assessment of plant protection products in Brazil: An overview of aquatic organism proposals

open access: yesIntegrated Environmental Assessment and Management, Volume 20, Issue 6, Page 1787-1792, November 2024.
Abstract Since 2019, the Brazilian Institute of Environment and Renewable Natural Resources (IBAMA) has actively developed pesticide environmental risk assessment (ERA) frameworks adapted to Brazil's specific ecological contexts. This endeavor, supported by funding from the Brazilian Ministry of Justice and in partnership with academic institutions ...
Ana Paola Cione   +2 more
wiley   +1 more source

Hematological parameters in two neotropical freshwater teleost, Leporinus macrocephalus (Anostomidae) and Prochilodus lineatus (Prochilodontidae)

open access: yesBioscience Journal, 2008
: Leporinus macrocephalus is a non-migratory omnivore fish which occurs in waters with a relatively high oxygen rate. Prochilodus lineatus is a migratory fish that inhabits deoxygenated hypolimnion and feeds on detritus material.
Marcos Tavares-Dias   +1 more
doaj  

Fish passage system in an irrigation dam (Pilcomayo River basin): When engineering designs do not match ecohydraulic criteria. [PDF]

open access: yes, 2013
The Route 28 Dam has the potential to block fish movements from La Estrella marsh to the Pilcomayo River. In addition, themany fish that concentrate immediately downstream of the dam may suffer high mortality when they are stranded duringlow water ...
Baigún, Claudio Rafael M.   +3 more
core   +1 more source

Histopathological changes induced by paraquat on some tissues of gourami fish (Trichogaster trichopterus) [PDF]

open access: yes, 2013
Paraquat is a contact and non-selective herbicide which is used for controlling a wide range of terrestrial weeds and aquatic plants. A long-term contact with this xenobiotic can potentially lead to injuries in fishes as live non-target organisms ...
F. Zoheiri, M. Banaee, M.H. Davoodi
core   +3 more sources

Glycerol supplementation in farmed fish species: A review from zootechnical performance to metabolic utilisation

open access: yesReviews in Aquaculture, Volume 16, Issue 4, Page 1901-1917, September 2024.
Glycerol, a by‐product from biodiesel production, has gained attention as feed ingredient for aquaculture. While providing cost‐effective energy and metabolic intermediates, glycerol utilisation in fish and its potential effects are here comprehensively reviewed, from zootechnical performance to metabolic utilisation.
Margarida Coelho   +5 more
wiley   +1 more source

Ichthyological ecoregions of Argentina [PDF]

open access: yes, 2002
The Argentine Republic is situated in the southernmost portion of the American continent, occupying over 2,785,600 km2 not including the Antarctic territory. The country ranges from subtropical areas (21º46’S) to subantarctic regions (55º03’S), extending
López, Hugo Luis   +2 more
core  

Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil

open access: yesNeotropical Ichthyology
This study investigated the migratory fish spawning within the reservoirs of the Machadinho and Itá dams (upper Uruguay River, Brazil) and its relationship to environmental variables.
David A. Reynalte-Tataje   +5 more
doaj   +1 more source

Estimation de l'âge individuel de Prochilodus nigricans (Teleostei, Prochilodae) dans le Béni (Bolivie) : protocole d'étude et application [PDF]

open access: yes, 1992
L'estimation de l'âge de #Prochilodus nigricans$ Agassiz, 1829 est réalisée à partir de 840 poissons pêchés de 1983 à 1987 dans les principaux milieux du réseau hydrographique de la rivière Mamoré (Béni, Bolivie). Diverses préparations et observations de
Loubens, Gérard, Panfili, Jacques
core  

Fish fauna from Río Pilcomayo National Park and Ramsar Site and its surroundings, Formosa, Argentina [PDF]

open access: yes, 2014
The first list of fish species from the Río Pilcomayo National Park and Ramsar Site (RPNP), located in the WetChaco plains of Northern Argentina is presented here.
Baigún, Claudio Rafael M.   +5 more
core   +4 more sources

Home - About - Disclaimer - Privacy