Results 11 to 20 of about 2,479 (211)

Growth performance of three pejerrey genetic groups in intensive culture system

Semina: Ciências Agrárias, 2014
This study examined the growth performance of Odontesthes bonariensis, O. humensis and hybrid (O. bonariensis X O. humensis) in intensive culture system for a period of 180 days, using the body weight (W), total length (Lt), condition factor (CF ...
Rafael Aldrighi Tavares , Sérgio Renato Noguez Piedras , João Morato Fernandes , Juvêncio Luis Osório Fernandes Pouey , Verônica Hammes Garcia , Heden Luiz Marques Moreira, Nelson José Laurino Dionello   +6 more
doaj   +5 more sources

Main diseases of pejerrey (Odontesthes bonariensis) in central Argentina Principais enfermidades do peixe-rei (Odontesthes bonariensis) registradas na Argentina Central [PDF]

Pesquisa Veterinária Brasileira, 2006
Argentina's central region includes an important area covered by shallow pampean lakes and dams. In these environments, fishing of pejerrey Odontesthes bonariensis Valenciennes, 1835 (Pisces, Atherinopsidae), the most important fresh-water fish of the ...
M. Mancini, C. Rodriguez, C. Prosperi, V. Salinas, C. Bucco   +4 more
doaj   +5 more sources

Dietary phosphorus requirement of pejerrey fingerlings (Odontesthes bonariensis) [PDF]

Revista Brasileira de Zootecnia, 2014
To determine the available phosphorus requirement of pejerrey fish, four semi-purified diets were formulated to contain increasing available phosphorus levels (0.90, 2.7, 5.7 and 8.3 g/kg).
Cleber Bastos Rocha, Mauro Kaster Portelinha, João Morato Fernandes, Aline Conceição Pfaff de Britto, Sérgio Renato Noguez Piedras, Juvêncio Luís Osório Fernandes Pouey   +5 more
doaj   +5 more sources

Characterization of glycoconjugates in the pharyngeal cavity and the oesophagus of Odontesthes bonariensis by lectins [PDF]

Biotemas, 2012
Seven types of biotinylated lectins were used to examine glycoconjugates (GCs) expression patterns in the mucosa of the pharyngeal cavity and the oesophagus of Odontesthes bonariensis.
Alcira Ofelia Díaz, María Florencia Tano de la Hoz, Alicia Mabel García, Alicia Haydée Escalante, Adriana Lía Goldemberg   +4 more
doaj   +6 more sources

The significance of cortisol on acclimation to salinity in pejerrey Odontesthes bonariensis Importância do cortisol na aclimatação a salinidade em peixe-rei Odontesthes bonariensis

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007
The role of cortisol on the osmoregulation of pejerrey Odontesthes bonariensis at different salinities was investigated in adult fish injected with 0.7mg hydrocortisone per 100g body weight of fish, and transferred to 0, 5 and 20ppt of NaCl.
M.Y. Tsuzuki, K. Ogawa, C.A. Strüssmann, M. Maita, F. Takashima, C.M.R. Melo   +5 more
doaj   +2 more sources

The effect of rearing temperature in larval development of pejerrey, Odontesthes bonariensis- Morphological indicators of development [PDF]

Neotropical Ichthyology, 2011
It is well known that in pejerrey water temperature not only affects growth rates but also directs the sexual differentiation process. This fact rise the question of how different the development of pejerrey larvae of the same age is when reared at ...
Chalde, Tomás, Cussac, Victor Enrique, Fernandez, Daniel Alfredo, Somoza, Gustavo Manuel   +3 more
core   +11 more sources

Foraging Observations: Novel Trophic Interactions Between the Andean Gull (<i>Chroicocephalus serrranus</i>) and Endangered Vertebrates of Lake Titicaca. [PDF]

Ecol Evol
We show that the Andean gull predates on both the Titicaca Grebe and the Titicaca Giant Frog. Both these species are critically endangered, and it was unknown that they had natural predators before this. ABSTRACT We record two new predation events and one new kleptoparasitic Andean Gull (Chroicocephalus serranus) behavior, interactions that directly ...
Quispe J, Villar DA, Díaz A, Almonte A, Elias-Piperis R.   +4 more
europepmc   +2 more sources

Coexistence of genotypic and temperature-dependent sex determination in pejerrey Odontesthes bonariensis. [PDF]

PLoS One, 2014
In this study, we examined whether a homolog of the master sex-determining gene amhy of Odontesthes hatcheri is present and plays any role in testis determination of pejerrey O. bonariensis, a species otherwise known for its strong temperature-dependent sex determination (TSD).
Yamamoto Y, Zhang Y, Sarida M, Hattori RS, Strüssmann CA.   +4 more
europepmc   +5 more sources

Diets of Three Sympatric Grebe Species in Lake Titicaca Indicate Possible Dietary Niche Partitioning. [PDF]

Ecol Evol
Lake Titicaca is home to three grebe species whose diets have not been thoroughly studied. In this natural history note, we provide the first description of the diets of these species and how they overlap and differentiate. ABSTRACT Dietary niche partitioning is a fundamental process in community ecology, of interest to both conservationists and ...
Villar DA, Yanes E, Gutiérrez Tito ER, Gosler AG.   +3 more
europepmc   +2 more sources

Producción intensiva de juveniles de pejerrey (Odontesthes bonariensis)

Biología Acuática, 2008
El objetivo de este trabajo es producir juveniles de Odontesthes bonariensis en un sistema intensivo. La experiencia duró 196 días y durante este se estudió la supervivencia, el crecimiento y la producción.
C. A. Velasco, Gustavo E. Berasain, M. Ohashi   +2 more
doaj   +2 more sources