Results 31 to 40 of about 510 (175)

Edad, crecimiento y reproduccion de Pseudoplatystoma fasciatum y Pseudoplatystoma tigrinum en la Amazonía boliviana

open access: yes, 2008
En la presente investigación se han determinado los principales rasgos de vida como son edad, crecimiento y reproducción de #Pseudoplatystoma fasciatum$ (Surubí) y #Pseudoplatystoma tigrinum$ (Chuncuina), en función a la diferencia de calidad de aguas de los ríos Mamoré (Aguas blancas) y del Iténez (Aguas negras) en los que se encuentran distribuidos ...
Inturias Canedo, A.D.
openaire   +2 more sources

Occurrence and significance of ovarian and follicular regression in cachara Pseudoplatystoma fasciatum (Linnaeus, 1766): a histology approach Ocorrência e importância da regressão ovariana e folicular em cacharas, Pseudoplatystoma fasciatum (Linnaeus, 1766): enfoque histológico

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2006
The processes of ovarian regression and follicular atresia which reproduction was not induced by hormone in confined cachara, Pseudoplatystoma fasciatum, were investigated. The macro and microscopic characteristics (oocytes diameter and histology) of the
A.F.G. Leonardo   +3 more
doaj   +2 more sources

Intestinal histomorphology in Pseudoplatystoma fasciatum fed bovine colostrum as source of protein and bioactive peptides Histomorfologia intestinal de Pseudoplatystoma fasciatum alimentado com colostro bovino como fonte de proteína e peptídeos bioativos

open access: yesScientia Agricola, 2010
Histological responses of the intestine are key for evaluating nutritional value of feed ingredients, since the organ is not only the chief site of feed digestion and nutrient absorption but also plays an important immunological function ...
Ana Paula Oeda Rodrigues   +5 more
doaj   +2 more sources

VARIABILIDAD GENÉTICA DE Pseudoplatystoma fasciatum (Linnaeus, 1766) Y Pseudoplatystoma tigrinum (Valenciennes, 1840), EN LA AMAZONÍA PERUANA

open access: yesFolia Amazónica, 2007
La variabilidad genética de Pseudoplatystoma fasciatum y P. tigrinum fue estimada en tres localidades de la Amazonía peruana mediante las técnicas "Exon - Primed Intron - Croosing" (EPIC) y "Restriction Fragment Length Polymorphism (RFLP). Un total de 102 especímenes fueron analizados con tres sistemas intrónicos (Ck, RPEX y PmOPSI).
RODRÍGUEZ-BRAVO, Javier   +4 more
openaire   +4 more sources

Testicular differentiation and development in South American catfish, surubim, Pseudoplatystoma fasciatum

open access: yesJournal of Applied Ichthyology, 2019
In the species Pseudoplatystoma fasciatum the males are smaller than females. Thus, the objective of this study was to describe the process of testicular differentiation and provide tools for sex manipulation techniques aimed at improving the productivity of farming of sexually‐reversed females.
Fernanda N. Valentin   +8 more
openaire   +3 more sources

The introduced Arapaima gigas in the Bolivian Amazon: Trophic position and isotopic niche overlap with native species

open access: yesEcology of Freshwater Fish, Volume 32, Issue 4, Page 926-937, October 2023., 2023
Abstract Non‐native fish species may generate major ecological impacts on native assemblages. This study aims to assess the potential impact of the introduced Arapaima gigas on native fish assemblages in two oxbow lakes of the Bolivian Amazon. Stable isotope data were used to determine trophic position (TP) and isotopic niche overlap, to evaluate ...
Danny Rejas   +3 more
wiley   +1 more source

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

Pseudoplatystoma fasciatum

open access: yes, 2023
Published as part of Koerber, Stefan, Guimarães, Erick Cristofore, Brito, Pâmella Silva de, Oliveira, Rafael Ferreira de & Ottoni, Felipe Polivanov, 2023, CLOFFBR-MA - update 1 - supplement to Checklist of the freshwater fishes of Maranhão, Brazil., pp.
Koerber, Stefan   +4 more
openaire   +2 more sources

Selenium/mercury molar ratio and Health Benefit Value for selenium of migratory catfish from Meta River, Colombia [PDF]

open access: yesBrazilian Journal of Biology
The study estimated the risk associated with the consumption of five large migratory catfish species for the health of the most vulnerable population, identifying the total mercury and selenium concentrations, the Se/Hg molar ratio, and the Health ...
S. Valbuena-Rodríguez   +2 more
doaj   +1 more source

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