LARVAL CULTURE OF NILE TILAPIA LINEAGES AT DIFFERENT STORAGE DENSITIES

LARVAL CULTURE OF NILE TILAPIA LINEAGES AT DIFFERENT STORAGE DENSITIES
QR Code

LARVAL CULTURE OF NILE TILAPIA LINEAGES AT DIFFERENT STORAGE DENSITIES

Larvae from two Nile tilapia (Oreochromis niloticus) lineages were subjected to different storage densities. An experiment was conducted arranged in a 4 x 2 factorial scheme, four storage densities (6.25, 12.50, 18.75 and 25.00 larvae L-1) and two lineages (GIFT and Thai). Larvae from the lineage GI...

Full abstract

Saved in:
Translated title: LINHAGENS DE TILÁPIAS DO NILO SUBMETIDAS À DIFERENTES DENSIDADES DE ESTOCAGEM NA LARVICULTURA
Journal Title: Revista Caatinga
Main Author: Emília Tatiane Lopes da Silva
Other Authors: Marcelo Mattos Pedreira;
Guilherme de Souza Moura;
Daiane Kelly Alves Pereira;
Carlos José Otoni
Palabras clave:
Traslated keyword:
Language: English
Get full text: http://periodicos.ufersa.edu.br/revistas/index.php/sistema/article/view/4415
Resource type: Journal article
Source: Revista Caatinga; Vol 29, No 3 (Year 2016).
Publisher: Universidade Federal Rural do Semi-Árido
Usage rights: Sin permisos preestablecidos
Subjects: Sciences --> Biology
Sciences --> Environmental Sciences
Applied Sciences --> Agriculture, Multidisciplinary
Applied Sciences --> Agronomy
Abstract: Larvae from two Nile tilapia (Oreochromis niloticus) lineages were subjected to different storage densities. An experiment was conducted arranged in a 4 x 2 factorial scheme, four storage densities (6.25, 12.50, 18.75 and 25.00 larvae L-1) and two lineages (GIFT and Thai). Larvae from the lineage GIFT and Thai (4,000) were distributed in 32 aquariums with 8 liters of water each, in a randomized order with four replications. The larvae were maintained in the aquariums with constant aeration and natural photoperiod for 36 days. Limnological variables were within the proper range to the specie. Data were subjected to ANOVA, and the Tukey test was used for the density effects. Regarding the biological variables, there was no interaction between lineage and density. The GIFT lineage presented better performance on total length and biomass at the 36th day. Regarding the densities of each lineage, the greater length, weight and weight gain results were found with a density of 6.25 larvae L-1, however, an increase in biomass and a space use optimization occurs using 25 larvae L-1. Therefore, the lineage GIFT at density of 25.00 larvae L-1 is indicated for larval culture.
Translated abstract: Larvas de duas linhagens de tilápias do Nilo (Oreochromis niloticus) foram submetidas a diferentes densidades de estocagem. O ensaio foi conduzindo em um fatorial 2 x 4, sendo quatro densidades de estocagem (6,25; 12,50; 18,75 e 25,00 ind. L-1), e duas linhagens (GIFT e Tailandesa). Larvas irmãs das linhagens Tailandesa e GIFT (4.000 ind.), foram distribuídas em 32 aquários com 8 L de água cada, de modo casualizado com quatro repetições cada. Por um período de 36 dias, as larvas foram mantidas em aquários providos de aeração constante e fotoperíodo natural. As variáveis limnológicas estiveram dentro da faixa adequada à espécie. Os dados foram interpretados por meio de ANOVA e para os efeitos densidade, utilizou-se Teste de Tukey. Quanto às variáveis biológicas, não houve interação entre linhagem e densidade. A linhagem GIFT apresentou melhor desempenho em comprimento total e biomassa para o 36o dia. Dentre as densidades para cada linhagem os melhores resultados de comprimentos, peso e ganho de peso, foram para a densidade 6,25 ind. L-1, mas ao se utilizar 25 ind. L-1 ocorre aumento na biomassa e otimização do espaço utilizado. Portanto, indica-se as linhagens GIFT na densidade de 25,00 ind. L-1.