Results 51 to 60 of about 1,424 (159)

The influence of sex ratio on the reproduction of pirarucu, Arapaima gigas, in captivity [PDF]

open access: yesActa Amazonica, 2018
Because sex ratio in the broodstock can influence the reproductive behaviour of a species, the influence of sex ratio on the reproductive success of pirarucu, Arapaima gigas, in captivity was assessed.
Adriana Ferreira LIMA
doaj   +2 more sources

Replacement of Fish Meal With Poultry Viscera Meal in Diets for Juvenile Arapaima gigas: Growth Performance, Hematological Parameters, Fillet Composition, and Gut and Liver Histology

open access: yesAquaculture Research, Volume 2026, Issue 1, 2026.
This study aimed to evaluate the effects of replacing fish meal with poultry viscera meal (PVM) in diets for juvenile Arapaima gigas, assessing growth performance, hematological parameters, fillet composition, and gut and liver histology. Five isonitrogenous (450.20 g kg−1 crude protein [PRO]) and isocaloric (20.02 MJ kg−1 gross energy) diets were ...
Elida Saucedo-Alanya   +8 more
wiley   +1 more source

Tolerância de juvenis de pirarucu ao aumento da concentração de amônia em ambiente confinado Tolerance of pirarucu juveniles to increasing ammonia concentration in a closed environment

open access: yesPesquisa Agropecuária Brasileira, 2004
O objetivo deste trabalho foi avaliar a tolerância de juvenis de pirarucu, Arapaima gigas, a concentrações crescentes de amônia na água. Oito peixes (2,6±0,4 kg e 70,5±4,1 cm de comprimento) foram distribuídos aleatoriamente em quatro ...
Bruno Adan Sagratzki Cavero   +6 more
doaj   +1 more source

A pesca manejada do pirarucu: tecnologia social para o desenvolvimento socioambiental da Amazônia [PDF]

open access: yes, 2022
This study addresses pirarucu (Arapaima spp) fishing in the Amazon, with the Middle and part of the Alto Solimões region as a study area, an area cataloged by scientific academic history as a Tefé area.
Silva, Núbia Maria Gonzaga da
core  

Digestibilidade aparente de dietas práticas com diferentes relações energia: proteína em juvenis de pirarucu Apparent digestibility coefficient of practical diets with different energy: protein ratios for pirarucu juveniles

open access: yesPesquisa Agropecuária Brasileira, 2008
O objetivo deste trabalho foi determinar a digestibilidade aparente de nutrientes e energia de dietas para juvenis de pirarucu, Arapaima gigas. Foram testadas oito dietas, contendo quatro relações energia:proteína (11, 10,1, 9, 8 kcal energia digestível ...
Eduardo Akifumi Ono   +4 more
doaj   +1 more source

Co‐Supplementation of Vitamins C and E Ameliorates Growth, Blood Biochemistry, Histomorphometry and Mucosal Health in Nile Tilapia, Oreochromis niloticus Under High Stocking Density

open access: yesAquaculture, Fish and Fisheries, Volume 5, Issue 6, December 2025.
ABSTRACT Supplementing diets with vitamins C and E has been reported to reduce the negative effects of stress associated with higher stocking density. This study investigated the combined effects of dietary vitamins C and E on the growth, nutritional composition, haematobiochemical response and mucosal health of Nile tilapia, Oreochromis niloticus ...
Sudipta K. Nag   +7 more
wiley   +1 more source

Traditional knowledge in the management practices of pirarucu (arapaima gigas) in the Middle Solimões, Amazonas

open access: yes, 2018
This research analyzed the epistemological bases of pirarucu management, seeking to identify the traditional knowledge present, and investigating the extent to which these knowledge were scientifically recognized and subsidized the normative and ...
Gonçalves, Ana Cláudia Torres
core   +1 more source

Amazonian fish migration as a social–cultural–ecological process

open access: yesPeople and Nature, Volume 7, Issue 12, Page 3297-3312, December 2025.
Abstract In this study, we highlight the rich perspectives and explanations of fish migration held by Indigenous groups across the Amazon. We present the aspects of Indigenous cosmological stories, drawing from our exploratory review of cultural ethnographies and grey literature, as well as the authors' own experiences. We ask, how do Amazonian peoples
LuLu Victoria‐Lacy   +6 more
wiley   +1 more source

Predação de larvas de pirarucu Arapaima gigas por peixes invasores.

open access: yes, 2022
Um dos principais gargalos na produção do pirarucu Arapaima gigas é a reprodução em cativeiro, resultando em inconstância no número de desovas por ciclo reprodutivo e instabilidade na disponibilidade de juvenis no mercado. Neste estudo, objetiva-se fazer
JESUS, F. H. R. de   +4 more
core  

Manejo de plantel de reprodutores de pirarucu. [PDF]

open access: yes, 2017
Introdução. Formação do plantel. Controle do plantel de reprodutores. Controle sanitário de reprodutores. Alimentação de reprodutores. Estratégias de formação de casais. Sexagem do pirarucu. Manejo genético de reprodutores.
RODRIGUES, A. P. O.   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy