Results 51 to 60 of about 168 (133)

Fishes of the Taquari-Antas river basin (Patos Lagoon basin), southern Brazil

open access: yesBrazilian Journal of Biology
The aquatic habitats of the Taquari-Antas river basin (in the Patos Lagoon basin, southern Brazil) are under marked environmental transformation because of river damming for hydropower production.
FG. Becker   +8 more
doaj   +1 more source

Substituição do farelo de soja pelo farelo de linhaça em dietas para a piava (Leporinus obtusidens)

open access: yesSemina: Ciências Agrárias, 2013
The aim of this study was evaluate the replacement of soybean meal by linseed meal on growth of piava juveniles. The experiment was carried on fish farming laboratory of UFSM/CESNORS, on March to April, 2011. They were used 360 fish, (initial weight = 9.0 ± 2.5 g), which placed in a water re-use system composed by 15 tanks (250L), with mean temperature
Dirleise Pianesso   +6 more
openaire   +2 more sources

Secuencias del gen mitocondrial para identificación de especies de animales

open access: yesRevista Colombiana de Ciencia Animal Recia, 2013
Marcadores moleculares basados en el ADN mitocondrial (ADNmt) tienen herencia materna y se pueden utilizar para evaluar relaciones filogenéticas y taxonómicas.
JOYCE AZAMBUJA DE OLIVEIRA,   +6 more
doaj   +1 more source

Isolation and characterization of 20 polymorphic microsatellite loci in the migratory freshwater fish Leporinus obtusidens (Characiformes: Anostomidae) using 454 shotgun pyrosequencing

open access: yesJournal of Fish Biology, 2015
Twenty polymorphic microsatellite markers were developed for the Neotropical fish Leporinus obtusidens using a next generation sequencing approach and tested in two other characifomes species, Schizodon platae and Prochilodus lineatus. Microsatellite loci alleles in L.
Villanova, Gabriela Vanina   +5 more
openaire   +3 more sources

Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains

open access: yesNeotropical Ichthyology
This study aimed to evaluate the importance of two environments situated in the main channel of the Peixe River (a tributary of the upper Uruguay River) on fish reproduction and initial growth.
Sunshine de Ávila-Simas   +2 more
doaj   +1 more source

Oxitetraciclina para marcação quí­­mica de juvenis de piava Leporinus obtusidens: determinação de doses e duração do tratamento

open access: yesBoletim do Instituto de Pesca, 2018
O objetivo deste estudo foi definir concentrações e tempos de imersão para a marcação quí­­mica de juvenis de Leporinus obtusidens por meio de oxitetraciclina (OTC).
Mariana Roza de ABREU   +3 more
doaj  

Moving beyond classical markers of water quality: detection of enteric viruses and genotoxicity in water of the Sinos River

open access: yesBrazilian Journal of Biology
It is well recognized that the classical biological and chemical markers of environmental pollution do not necessarily indicate the presence or absence of emerging threats to public health, such as waterborne viruses and genotoxicants.
B Bergamaschi   +8 more
doaj   +1 more source

Evaluation of fish passage through the Igarapé Dam fish ladder (rio Paraopeba, Brazil), using marking and recapture

open access: yesNeotropical Ichthyology
Rio Paraopeba, a tributary of rio São Francisco, has a six-meter high dam, built in 1978 to divert water to the Igarapé Thermal Power Plant. In 1994, a fish ladder was built at this dam.
Carlos Bernardo Mascarenhas Alves
doaj   +1 more source

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