Consulta: subjectFacets:"Larviculture"
Registros recuperados: 20
Data/hora: 06/06/2024 09:35:53

Development of the Vertebral Column and Caudal Skeleton in Prochilodus lineatus Larvae under Laboratory Conditions
Provedor de dados: 77
Autores: Hernández,David Roque; Olivera,Carlos; Santinón,Juan José; Ruiz Diaz,Federico José; Sánchez,Sebastián.
For successful fish larviculture thorough studies describing the development of fish in different morphological aspects are required, as they are crucial for larval survival and growth. The present study described in Prochilodus lineatus larvae the osteological development of the vertebral column and caudal skeleton 30 days after hatching (dah). Larvae were obtained by artificial induction of adults. The beginning of formation of the spine occurs between 10 to 12 dah (8.3 mm standard length, SL) simultaneously to the first neural and hemal processes and the pre-caudal vertebral bodies. The ossification of the vertebral column occurred in cranio-caudal direction and was completed at 28 dah (22.6 mm SL). The development of the caudal skeleton elements...
Tipo: Journal article
Palavras-chave: Prochilodus lineatus; Larviculture; Osteological development.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100021

Changes in digestive enzymes activities during the initial ontogeny of wolf cichlid, Parachromis dovii (Perciformes: Cichlidae)
Provedor de dados: 83
Autores: Frías-Quintana,Carlos Alfonso; Álvarez-González,Carlos Alfonso; Guerrero-Zárate,Rocío; Valverde-Chavarría,Silvia; Ulloa-Rojas,Juan B.
ABSTRACT Wolf cichlid, Parachromis dovii, is a species with a high potential for aquaculture in Central America; however, the knowledge of the digestive physiology in larvae period is limited. For these reason, this study evaluated the changes on digestive enzymes (alkaline and acid proteases, trypsin, chymotrypsin, aminopeptidase, carboxypeptidase, lipases, amylases, and phosphatases) during early ontogeny by biochemical analysis. All digestive enzymes were detected at first feeding (6 days after hatching, DAH, 9.49 mm, 168 degree-days DD). Afterwards all enzymes reached two main peaks in activity at 14 or 22 DAH (15.10 mm, 364 DD and 20.83 mm, 550 DD, respectively). Later, there was a gradual decrease in activity for trypsin and acid and alkaline...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Larviculture; Proteases; Zymogram.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000100215

Morphometric comparison between hatchery-reared and wild-caught megalopae of the mangrove crab
Provedor de dados: 86
Autores: Ayres,Bárbara Andressa Casagrande; Silva,Ubiratã Assis Teixeira da; Souza,Robson Ventura de; Boeger,Walter Antonio; Ostrensky,Antonio.
The objective of this work was to compare the morphometry of hatchery-reared and wild-caught mangrove crab (Ucides cordatus) megalopae. Ten U. cordatus megalopae of each group (hatchery-reared and wild-caught) were individually analyzed using a stereoscopic microscope equipped with an ocular micrometer. Length, width, and height of all megalopae were measured, and the size of body appendices was determined. The results indicate that the hatchery-reared megalopae are more robust than the wild ones. Furthermore, some significant differences in the size of certain appendices can be cues of the kind of alterations that hatchery-reared individuals experience.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Ucides cordatus; Body appendices; Larviculture; Rearing-environment; Restocking programs.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800056

Maintenance of Octopus vulgaris Type II paralarvae in an estuarine area
Provedor de dados: 96
Autores: Bastos,Penélope; Vieira,Graziela Cleuza.
ABSTRACT We assessed the survival of paralarvae kept in a floating wooden box attached to an oyster extensive cultivation system with no extra food supply. A total of 7700 newly hatched paralarvae were maintained in a 10.5-L floating box (7 cm height × 30 cm width × 50 cm length) covered with a 180-μm mesh net for 14 days with no extra food supply. Skin damages and tentacle deformities were observed in 43% of the paralarvae at 14 days after hatching (DAH). The survival rate was 64.7% at 7 DAH and 42.8% at 14 DAH. The floating box is a promising structure for culturing O. vulgaris paralarvae in an extensive system.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Larviculture; Mariculture; Mollusc.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100101

Performance and stress resistance of Nile tilapias fed different crude protein levels
Provedor de dados: 96
Autores: Luz,Ronald Kennedy; Ribeiro,Paula Adriane Perez; Ikeda,Aline Leite; Santos,André Eduardo Heringer; Melillo Filho,Reinaldo; Turra,Eduardo Maldonado; Teixeira,Edgar de Alencar.
The objective of this study was to evaluate the effect of different levels of diet crude protein on the performance and stress resistance rate (Re) of Oreochromis niloticus larvae and fingerlings. In the first experiment, 5, 15 and 25 day-old animals were submitted to 1, 5, 7, 10, 15, 20, 30 and 40 minutes of air exposure on a sieve. In the second experiment, tilapia larvae were fed with 32, 40 and 55% crude protein (CP) diets. Animals after 15 and 30 days of feeding (21 and 36 days of life, respectively) were submitted to the air exposure test for 7 and 10 minutes. Re was estimated based on survival 24 hours after the tests. In the first experiment, it was observed that 5-day-old animals were more resistant than animals with 10 and 20 days of feeding (15...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Air exposure; Feeding; Larviculture; Oreochromis niloticus.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200031

Description of the reproductive behavior of Symphysodon aequifasciatus (Cichlidae) in captivity
Provedor de dados: 36
Autores: MATTOS,Douglas da Cruz; SCRENCI-RIBEIRO,Rafaela; CARDOSO,Leonardo Demier; JUNIOR,Manuel Vazquez Vidal.
ABSTRACT The blue discus (Symphysodon aequifasciatus) is often sold for ornamental purposes. It is a neotropical cichlid from South America, which is native to the rivers of the Amazon basin of Brazil, Peru and Colombia. The purpose of this study was to characterize the reproductive behavior of S. aequifasciatus and identify features that can later be used by breeders to facilitate the handling and reproduction of this species in captivity. The experiment was divided into two stages: the first dealt with partner selection and couple formation to observe the behaviors of territoriality, pursuing, fleeing, biting, stay, protecting and cleaning of the substrate. The second stage documented mating behavior, nesting and parental care, to observe vibration,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian Fish; Ornamental Fish; Larviculture; Reproduction; Behavior.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400433

Effect of body size heterogeneity on the aggressive behavior of larvae of matrinxã, Brycon amazonicus (Characiformes, Bryconidae)
Provedor de dados: 36
Autores: CARVALHO,Thaís Billalba; SOUZA,Ellen Cristina Monteiro de; PINHEIRO-DA-SILVA,Jaquelinne; VILLACORTA-CORREA,Marle Angélica.
ABSTRACT Brycon amazonicus is a native Amazonian fish that is important for aquaculture in South America. Larval mortality is high in this species in intensive breeding systems due to aggressiveness among larvae. The present study investigated experimentally the effects of body size heterogeneity on the aggressive behavior and survival of B. amazonicus during the early stages of larval development. Two treatments (larvae groups with homogeneous and heterogeneous body size) were evaluated throughout early larval stages tested at six time points: 12, 24, 36, 48, 60 and 72 hours after hatching (HAH). Two experiments quantified, respectively, aggressive interactions and mortality rates among larvae at each time point. The frequency of aggressive interactions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggressiveness; Fish; Larviculture; Mortality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000400304

Effects of stocking-density in flow-through system on the mussel Perna perna larval survival
Provedor de dados: 2
Autores: Turini, Caio Silva; Universidade Federal de Santa Catarina; Sühnel, Simone; Universidade Federal de Santa Catarina; Lagreze-Squella, Francisco José; Universidade Federal de Santa Catarina; Ferreira, Jaime Fernando; Universidade Federal de Santa Catarina; Melo, Claudio Manoel Rodrigues de; Universidade Federal de Santa Catarina.
This study evaluated the effects of larval densities, cultured in flow-through system, in the yield and quantity of larvae. The first experiment compared the larval yield of a flow­through system (80 larvae mL-1) and a batch system (8 larvae mL-1), which resulted in a higher yield and number of larvae in the flow­through system, after 23 days. The second experiment compared two larval densities (20 and 45 larvae mL-1) in flow­through system. The densities affected the yield after 15 and 23 days and the larvae final quantity after all tested times (8, 15, and 23 days). After 23 days of larviculture, the yield was highest for 20 larvae mL-1 and the larval number for 45 larvae mL-1. The third experiment also compared two larval densities (100 and 150 larvae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.06.03.00-0 bivalve mollusc; Yield; Larviculture; Density.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23685

Monoculture of the ciliate protozoan Euplotes sp. (Ciliophora; Hypotrichia) fed with different diets - doi: 10.4025/actascibiolsci.v35i1.11795
Provedor de dados: 3
Autores: Côrtes, Guilherme de Freitas; Universidade Federal de Santa Catarina; Tsuzuki, Monica Yumi; Universidade Federal de Santa Catarina; Costa Melo, Emílio Mateus.
Ciliate protozoa of the genus Euplotes commonly appears contaminating mass cultures of rotifers but also with potential to be used as live food in the larviculture of marine fish. To obtain a monoculture of Euplotes sp., three diets were tested: 1) microalgae Nannochloropsis oculata, 2) commercial diet for rotifers Culture Selco 3000, and 3) baker’s yeast (Saccharomyces cerevisiae). The ciliates were inoculated at 10 ind. mL-¹. On day 5, protozoa densities in the groups fed the commercial diet (1,911.0 ± 248.7 ind. mL-¹) and the baker’s yeast (2,600.0 ± 195.3 ind. mL-1) did not differ, but were higher than the group fed microalgae (2.0 ± 1.4 ind. mL-1) (p &amp;lt; 0.05). On day 6, the density in the group fed baker’s yeast was higher (15,484.0 ± 1,164.9...
Palavras-chave: 2.03.00.00-0 live food; Production; Microalgae; Rotifers; Larviculture; Marine fish Aquicultura.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11795

Effect of prey concentrations and feed training on production of Hoplias lacerdae juvenile
Provedor de dados: 42
Autores: LUZ,RONALD K.; PORTELLA,MARIA CÉLIA.
The aim of this work was to investigate the effects of daily prey concentration during the first 15 days of active feeding of Hoplias lacerdae larvae, and the juvenile size on the feed training. In the first phase, the larvae received five Artemia nauplii concentrations (P). In the second phase, the juveniles from each treatment were trained to accept formulated diet. Superior growth was related to higher initial daily prey concentrations (900 and 1100 nauplii larvae-1). During feed training, the growth tendency was similar to that verified in the first phase. The lowest values of specific growth rate (SGR) were registered after the introduction of the semi-moist diet used in the feed training. However, the values of SGR recovered along the experiment and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemia; Feeding management; Larviculture; Formulated diet.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000201125

Effect of water flow rate and feed training on "pacamã" (Siluriforme: Pseudopimelodidae) juvenile production
Provedor de dados: 45
Autores: Luz,R.K.; Santos,J.C.E.; Pedreira,M.M.; Teixeira,E.A.
The effects of different water flow rates and feed training on the production of "pacamã" Lophiosilurus alexandri juveniles were evaluated. In the first experiment, nine day post-hatch larvae (n= 2,400) were stocked at a density of 5 larvae/L. Different water flow (F) rates were tested: F1 = 180; F2 = 600; F3 = 1,300; and F4 = 2,600mL/min. Artemia nauplii were offered as food during the first 15 days of active feeding. In the second experiment for feed training, 720 juveniles (total length of 22.2mm) were stocked at a density of 1.5 juveniles/L. A water flow rate similar to F1 was used. The use of extruded dry diet was tested, and feed training was done with and without other enhanced flavors (Artemia nauplii or Scott emulsion). The water flow rates did...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed training; Juvenile production; Larviculture; Lophiosilurus alexandri; Water flow.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000400024

Production of "pejerrey" Odontesthes argentinensis fingerlings: A review of current techniques
Provedor de dados: 47
Autores: Sampaio,Luís André.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Reproduction; Larviculture; Atherinopsidae.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100015

Advances in applied research for the culture of Mexican silversides (Chirostoma, Atherinopsidae)
Provedor de dados: 47
Autores: Martínez Palacios,C.A.; Racotta,I.S.; Ríos-Durán,M.G.; Palacios,E.; Toledo-Cuevas,M.; Ross,L.G.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chirostoma estor estor; Larviculture; Buccal anatomical structures; Optimal culture conditions.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100018

Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods
Provedor de dados: 52
Autores: Schütz,Jackson Haroldo; Nuñer,Alex Pires de Oliveira.
The effect of food and photoperiod on dorado (Salminus brasiliensis) post-larvae growth and survival was investigated using the following treatments: LD (Light: Dark) 24:0 + Artemia nauplii (A), LD 24:0 + fish prey (F), LD 14:10 + A, LD 14:10 + F, LD 0:24 +A and LD 0:24 + F. Prochilodus lineatus larvae were used as fish prey. Higher survival rates were registered in fish prey treatments (P&lt;0.05) and were not influenced by photoperiod whereas in Artemia treatments, the survival was very low, but directly proportional to light increase (P&lt;0.05). The better growth in LD 0:24 was related to a safe-energy strategy that reduced energy consumption whereas in LD 24:0, the higher energy consumption reduced the growth. In intermediate photoperiod, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dorado; Food type; Larviculture; Photoperiod; Salminus brasiliensis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300010

Photoperiod influence on the cultivation of Steindachneridion scriptum (Pisces, Pimelodidae) juvenile
Provedor de dados: 52
Autores: Zaniboni-Filho,Evoy; Reynalte-Tataje,David; Nuñer,Alex Pires de Oliveira; Meurer,Samira.
This study aimed to evaluate the influence of photoperiod on juvenile suruvi (Steindachneridion scriptum) in six photoperiods: 24L-0D (L= Light; D= Dark), 18L-6D, 14L-10D, 10L-14D, 6L-18D and 0L-24D. Juveniles measuring 176.8 ± 13.2mm and weighing 60.2 ± 16.0g were distributed in eighteen 150-L aquariums, stocked with 8 juveniles per aquarium. At the end of the study, treatments 24L-0D (105.7 ± 5.8g and 845.9 ±46g) and 0L-24D (93.3 ± 4.9g and 746.4 ± 39.5g) were different (P&lt;0.05) on weight and biomass. Survival (100 ± 0.0%) and length (212.5 ±2.5mm) were the same (P&gt;0.05) in all the treatments. The results showed that suruvi (Steindachneridion scriptum) reached better weight and biomass in extended light periods.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Steindachneridion scriptum; Larviculture; Photoperiod; Growth.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300016

Dietary soybean meal on growth and intestinal morphology of South American catfish, Rhamdia quelen, larvae
Provedor de dados: 65
Autores: Hernández,David Roque; Santinón,Juan José; Sánchez,Sebastián; Domitrovic,Hugo Alberto.
The effects of the replacement of bread yeast by soybean meal in diets for Rhamdia quelen larvae on growth, survival, and intestinal morphology were analysed. Larvae were fed for 20 days with five diets: a control diet formulated with 57% of bread yeast, and other four diets in which soybean meal at concentrations of 14.25, 28.5, 42.75 and 57% was added to obtain 25, 50, 75 and 100% of bread yeast replacement. Growth and survival parameters were negatively affected by dietary soybean meal inclusion. Larvae fed control diet showed significantly higher mean weight, specific growth rate, final biomass, and survival rate than larvae from other treatments. Enterocyte height and fold width of the posterior intestine showed highest values in the control group,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Larviculture; Experimental diet; Intestine; Morphology; South American catfish.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000900023

Effect of stocking density on the growth and survival of Anomalocardia brasiliana (Gmelin, 1791) (Bivalvia: Veneridae) post-larvae
Provedor de dados: 65
Autores: Oliveira,Isabela Bacalhau de; Lavander,Henrique David; Lima,Priscilla Celes Maciel de; Oliveira,Carlos Yure Barbosa de; Dantas,Danielli Matias de Macedo; Gálvez,Alfredo Olivera.
ABSTRACT:  Anomalocardia brasiliana post-larvae were cultured for 28 days to evaluate the effect of stocking density on their growth and survival rate. Three stocking densities were tested 40, 80 and 160 post-larvae cm-2, in experimental units (2-L) with static cultivation system and total water renewal at each 48 hours. The experimental design was completely randomized with three treatments and three repetitions each. Stocking density of 40 post-larvae cm-2 reached 1 mm length within 24 days, while only 18% of the post-larvae at density of 80 post-larvae cm-2 reached 1 mm length in the same time. The density of 40 post-larvae cm-2 had the highest specific growth rate, 4.98±0.08% day-1. The survival rates of post-larvae at lower densities were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Clams; Larviculture; Microalgae; West Indian pointed venus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001200652

Growth, survival and bone alterations in Piaractus mesopotamicus larvae under different rearing protocols
Provedor de dados: 65
Autores: Hernández,David Roque; Agüero,Carlos Hernán; Santinón,Juan José; González,Alfredo Oscar; Sánchez,Sebastián.
The pacu (Piaractus mesopotamicus) is a neotropical freshwater fish. It is one of the most important species farmed in areas of the Parana and Paraguay Rivers basins. The effects of different rearing protocols on growth, survival and incidence of skeletal malformations in pacu larvae were analyzed. A total of six experimental treatments were considered, consisting of: a semi-intensive larviculture (LS) in ponds; intensive larviculture (LIn) in laboratory (both LS and LIn until 60 days of life); and mixed larviculture, with 20 days of semi-intensive larviculture into cages in ponds after 14 (L1), 21 (L2), 33 (L3) or 40 (L4) days of laboratory larviculture. At the end of the experimental period, LSlarvae showed higher growth rate, with average weight values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piaractus mesopotamicus; Larviculture; Retention; Bone malformations.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901667

The influence of the photoperiod on productive performance and survival of piabanha-of-Pardo (Brycon vonoi ), hatchery
Provedor de dados: 65
Autores: Pedreira,Marcelo Mattos; Costa,Deliane Cristina; Schorer,Marianne.
ABSTRACT: This research aimed to verify the influence of the photoperiod on the performance and survival piabanha-of-Pardo (Brycon vonoi) larvae. Piabanha-of-Pardo larvae 24 hours post-hatch, with body weight of 2.44 ± 0.02mg, and total length of 7.82 ± 0.46mm, were subjected to five different photoperiods: 0L:24D, 6L:18D, 12L:12D, 18L:6D and 24L:0D (871.12 ± 92.65 lux). Daily, the water temperature, dissolved oxygen (DO), percentage of oxygen saturation, pH, and water conductivity were monitored, and presented similar water quality values among tanks with distinct photoperiods, and within the range considered appropriate for the genus Brycon larvae. Piabanha-of-Pardo larvae have better productive performance and survival rate at longer photoperiods, over...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brycon vonoi; Growth; Larviculture; Luminosity; Survival.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000100402

Autochthonous probiotic mixture improves biometrical parameters of larvae of Piaractus mesopotamicus (Caracidae, Characiforme, Teleostei)
Provedor de dados: 65
Autores: Guidoli,Marcos Gabriel; Mendoza,Jorge Arnaldo; Falcón,Sofia Lizardo; Boehringer,Silvia Irene; Sánchez,Sebastián; Macías,María Elena Fátima Nader.
ABSTRACT: Probiotics are a novel alternative to antibiotics as growth factors. Previously, our group isolated, selected and tested in vivo, eight autochthonous strains. They showed no significant effects when administered individually. However, the best doses, stages and ways of administration were combined in a multi strain formula. The aim of this research was to evaluate the effect of this probiotic product on the growth and survival of Piaractus mesopotamicus larvae. The administration was implemented during egg incubation and endogenous feeding period (5), during larvae exogenous feeding period (10) and all along the experiment (15). A group without microorganisms was used as control. The probiotic generates significant increments of mean weight and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactic acid bacteria; Bacillus; Pacú; Larviculture.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700652