Live and formulated diet evaluation through initial growth and survival of jundiá larvae, Rhamdia quelen

Carneiro, Paulo César Falanghe; Mikos, Jorge Daniel; Schorer, Marianne; Nelson-Filho, Paulo; Bendhack, Fabiano

doi:10.1590/s0103-90162003000400002

Cited by 14 publications

(20 citation statements)

References 18 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…En el presente estudio, los parámetros biométricos de crecimiento y supervivencia obtenidos en larvas de R. quelen, alimentadas con alimento vivo o dieta seca, fueron similares a los observados en trabajos previos (Carneiro et al, 2003;Cardoso et al, 2004;Hernández et al, 2009Hernández et al, , 2012a. Además, aquí se describe por primera vez la incidencia de diferentes tipos de anomalías esqueléticas observadas en la columna vertebral y complejo caudal de esta especie bajo condiciones controladas de larvicultura.…”

Section: Discussionunclassified

Crecimiento, supervivencia e incidencia de malformaciones oseas en distintos biotipos de Rhamdia quelen durante la larvicultura

Hernández¹,

Santinón²,

Sánchez

et al. 2013

lajar

View full text Add to dashboard Buy / Rent full text

RESUMEN.Se evaluó el efecto de dos dietas (alimento vivo y dieta seca) y dos poblaciones diferentes de Rhamdia quelen de Argentina (área pampeana y nordeste) sobre parámetros de crecimiento, supervivencia e incidencia de malformaciones óseas en sus larvas según un diseño factorial 2x2. Al final de la experiencia (20 días pos-eclosión), las deformaciones esqueléticas fueron diversas y afectaron todas las regiones del eje vertebral. En ningún caso estas anomalías incidieron sobre el peso final de las larvas. No obstante, el biotipo nordeste presentó el mayor porcentaje de ejemplares con anomalías esqueléticas (72,3%) y menor supervivencia. Las alteraciones más comunes fueron compresiones y fusiones vertebrales, afectando el 22,2 y 19,4% de las larvas, respectivamente. El análisis estadístico mostró que la frecuencia de fusiones no fue afectada por el biotipo o por el tratamiento alimentario. Sin embargo, en el caso de las compresiones vertebrales se observó interacción entre biotipo y dieta. Para este tipo de lesión, con alimento vivo, no se detectaron diferencias entre biotipos, al tiempo que las larvas alimentadas con dieta seca presentaron mayor frecuencia de compresiones en el biotipo nordeste. Estos resultados indican que la incidencia de malformaciones en larvas de R. quelen se encuentra relacionada con ambos factores (biotipo y dieta). La coloración diferencial de cartílagos y huesos en larvas puede convertirse en una herramienta útil para evaluar, precozmente, la incidencia de malformaciones durante el desarrollo temprano de R. quelen. Palabras clave: Rhamdia quelen, malformaciones esqueléticas, larvicultura, dietas, biotipos, Argentina. Growth, survival and incidence of skeletal malformations in different biotypesof Rhamdia quelen during larviculture ABSTRACT. The effect of two diets (live food and dry diet) and two different populations of Rhamdia quelen from Argentina (pampean and northeastern area) on performance and skeletal deformities in fish larvae, according to a 2x2 factorial design, was evaluated. At the end of the trial (20 days post-hatching), skeletal deformities were diverse and affected all regions of the vertebral axis. In neither case, these anomalies had an impact on final weight of larvae. The northeastern biotype presented the highest percentage of skeletal abnormalities (72.3%) and lower survival. A high incidence of fused and compressed vertebrae (affecting 22.2 and 19.4% of the larvae, respectively) was observed. Statistical analysis showed that fusions were not affected by the biotype or feeding treatment. However, in the case of compressions, interaction between diet and biotype was found. For this kind of malformations, live food treatment shows not difference between biotypes, while larvae fed dry diet had the highest frequency in the northeastern biotype. These results indicate that to prevent the incidence of bone malformations in R. quelen larvae both factors must be considered (biotype and diet). The differential bone and cartilage staining could be a useful tool for precoci...

show abstract

“…En larvas del silúrido Clarias gariepinus, alimentadas con raciones secas y con Artemia, se determinó que la mayor producción en términos de biomasa, fue obtenida por la combinación de éstas dos fuentes alimenticias (23); también se observó un desempeño similar en larvas de Rhamdia quelen cuando se utilizó una combinación de zooplancton natural y alimento formulado con 45% de proteína bruta y 10% de lípidos (24). En el presente trabajo las mayores ganancias de peso fueron obtenidas en las dietas con alimento natural en combinación con el formulado.…”

Section: Discussionunclassified

Larvicultura de Rhamdia quelen (Pisces, Pimelodidae) con proteína vegetal y animal, suplementadas con plancton

G²,

E³

et al. 2011

Rev MVZ Córdoba

View full text Add to dashboard Buy / Rent full text

ORIGINAL Larvicultura de RESUMENObjetivo. Determinar el efecto de dietas con diferentes proporciones de fuentes proteicas animales y vegetales suplementadas con plancton sobre el crecimiento y sobrevivencia en larvas de Rhamdia quelen. Materiales y métodos. Fueron formuladas dos dietas experimentales, dieta-1 con 70% de proteína de origen vegetal (torta de soya) y dieta-2 con 70% de proteína proveniente de animales (corazón bovino y harina de pescado); se utilizaron cuatro protocolos de alimentación (cinco réplicas por tratamiento): dieta-1 + plancton filtrado en tamiz de 50-200 micras (T1), dieta-2 + plancton filtrado en tamiz de 50-200 micras (T2), dieta-1 (T3), dieta-2 (T4). Las larvas fueron manejadas a una densidad de 20 animales L-1 suministrando alimento hasta aparente saciedad diariamente a las 07:00, 11:00, 16:00 y 21:00 horas; la suplementación con plancton se realizó a las 11:00 y 21:00 horas. Resultados. Entre T1 y T2 no se observaron diferencias estadísticas (p>0.05) en peso final (21.89 ± 15.17mg vs 20.37 ± 10.37mg), longitud total (13.41±2.34mm vs 13.39±1.99 mm), factor de condición (K) (0.80±0.13 vs 0.78±0.13 ) y sobrevivencia (46.6±2.68% vs 36.0±7.41%); las diferencias entre T3 y T4 tampoco fueron significativas (3.35±1.40 mg vs 2.98±1.48 mg; 7.54±0.91mm vs 7.33±0.96mm; 0.75±0.13 vs 0.71±0.12; 33.6±9.07% vs 24.8±6.76%, respectivamente); hubo diferencias significativas (p<0.05) entre los grupos suplementados con plancton y los alimentados solo con ración. Conclusiones. La suplementación con plancton fue más efectiva que el ofrecimiento solo de ración. La inclusión del 62.9% de torta de soya en la formulación (T1), aparentemente no afectó el crecimiento ni la sobrevivencia.

show abstract

“…; Carneiro et al . ; Hernández et al . ) and to evaluate different protein sources (Piaia & Radünz Neto ,b; Lazari et al .…”

Section: Introductionmentioning

confidence: 98%

Growth, survival and fatty acid composition ofRhamdia quelen(Quoy and Gaimard, 1824) larvae fed on artificial diet alone or in combination withArtemianauplii

Salhi

Baekgaard

2011

Aquac Res

View full text Add to dashboard Buy / Rent full text

Growth, survival and fatty acid composition ofRhamdia quelen (Quoy and Gaimard, 1824) larvae fed on artificial diet alone or in combination with Artemia nauplii Abstract Black catfish (Rhamdia quelen) is a species of interest for aquaculture in Brazil, Argentina and Uruguay. A feeding trial was conducted to evaluate the effect of feeding R. quelen larvae on either only an artificial diet or in combination with Artemia nauplii (AN) on larval performance and fatty acid composition. For 12 days, larvae were fed from first feeding (3 days after hatching, TL = 5.88 ± 0.23 mm) with artificial food only or a combination of artificial food and AN (co-feeding). At the end of the trial, total length of co-fed larvae was significantly higher than that of larvae fed solely artificial food (P < 0.001). No significant differences were found in survival rates. Co-feeding microdiet with a small amount of AN significantly affected larval fatty acid composition. Lipid and fatty acid composition of food and larvae revealed the importance of n-3 fatty acids for growth of black catfish larvae and that, as most freshwater fish, R. quelen larvae can elongate and desaturate linolenic acid to n-3 highly unsaturated fatty acids. Results suggest that R. quelen larvae can be fed from first feeding on microdiets as unique food source, although better larval performances are obtained by co-feeding with a small amount of AN.

show abstract

“…It hides among stones and rotten trunks during the day and leaves these hiding places at night to forage (Guedes, 1980). This species is of interest to producers and researchers because of several characteristics that favor its inclusion in the Brazilian list of commercially raised fish (Gomes et al, 2000;Carneiro et al, 2003). According to the fishery statistics in Ibama (2007), in 2005, jundiá was the second most caught fish in artisanal fisheries (395.0 tons/ year), and the third most produced by continental freshwater aquiculture (358.0 tons/year) in southern Brazil.…”

Section: Introductionmentioning

confidence: 99%

“…According to the fishery statistics in Ibama (2007), in 2005, jundiá was the second most caught fish in artisanal fisheries (395.0 tons/ year), and the third most produced by continental freshwater aquiculture (358.0 tons/year) in southern Brazil. Thus, it is very important to fish farming, particularly in southern Brazil (Gomes et al, 2000;Carneiro et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Larvae occurrences of Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) in an area under dam influence in the upper Paraná River region, Brazil

et al. 2011

View full text Add to dashboard Buy / Rent full text

Rhamdia quelen (Jundiá) is a catfish species of great interest to fish producers and researchers due to several favorable characteristics for inclusion in the Brazilian list of commercially raised fish. It has a wide geographical distribution, with occurrences reported from Central Argentina to South Mexico. Studies on the biological aspects of this species have been limited to captive adult fishes that were researched for farming purposes. Research related to ichthyoplankton has provided valuable information on spawning periods and sites and other aspects of breeding for numerous species of fish. This information is crucial for implementing management and protection strategies for these species. The studied floodplain is located in a lotic remnant between the Reservoirs of Itaipu and Engenheiro Sérgio Motta. This area is located inside a protected area (Ilha Grande National Park) in the last portion of dam-free land along the Paraná River in the Brazilian territory; however, it is still threatened by the negative effects of the dams. We conducted monthly nocturnal collections during four periods from October to March, 2003March, to 2007 locations along the main channel, secondary lakes and main tributaries of the Paraná River. After collection, the individuals were classified according to the degree of development and the notochord flexion and caudal fin support elements. Data were analyzed using principal component analysis (PCA), ANOVA and Pearson correlation to relate abiotic and larval density data. The increase of capture abundances in the four studied stages suggests that R. quelen is finding conditions that are favorable to its reproduction. The increase in captures can generate questions regarding R. quelen reproductive activity, for instance, whether the species is adapting or is influenced by environmental changes created by the Paraná River dams.Rhamdia quelen (jundiá) é uma espécie de bagre que tem despertado grande interesse dos piscicultores e pesquisadores devido a várias características favoráveis a sua inclusão na lista de peixes criados comercialmente no país. Apresenta ampla distribuição geográfica, tendo sua ocorrência registrada desde a região central da Argentina até o sul do México, entretanto, os aspectos de sua biologia que foram estudados são em sua a maioria direcionada aos adultos e em cativeiro, com fins aquícolas. Pesquisas relacionadas ao ictioplâncton têm-se mostrado de grande importância por fornecer informações valiosas sobre a época, locais de desova e de criadouros naturais de várias espécies de peixes. Essas informações são fundamentais para a implementação de medidas de ordenamento e proteção dessas áreas. A planície de inundação estudada está localizada em um remanescente lótico, entre os reservatórios de Itaipu e Engenheiro Sérgio Motta. Apesar da unidade de conservação existente nesse trecho (Parque Nacional de Ilha Grande) e de estar localizada no último trecho livre de barramentos do rio Paraná em território brasileiro, a área é especialmente impactada pelos efeitos...

show abstract

Live and formulated diet evaluation through initial growth and survival of jundiá larvae, Rhamdia quelen

Cited by 14 publications

References 18 publications

Crecimiento, supervivencia e incidencia de malformaciones oseas en distintos biotipos de Rhamdia quelen durante la larvicultura

Larvicultura de Rhamdia quelen (Pisces, Pimelodidae) con proteína vegetal y animal, suplementadas con plancton

Growth, survival and fatty acid composition ofRhamdia quelen(Quoy and Gaimard, 1824) larvae fed on artificial diet alone or in combination withArtemianauplii

Larvae occurrences of Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) in an area under dam influence in the upper Paraná River region, Brazil

Contact Info

Product

Resources

About