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Early life stages of development of the red porgy Pagrus pagrus (Pisces, Sparidae) in captivity, Argentina
Machinandiarena,Laura; Müller,Mónica; López,Andrea;
Investigaciones marinas , 2003, DOI: 10.4067/S0717-71782003000100002
Abstract: the early life history, from egg to juvenile, of red porgy pagrus pagrus, in captivity is described. yolk larvae were hatched 50 hours after fertilization, at 18°c water temperature. the opening of the mouth took place between the third and fourth day after hatching, corresponding to 2.6-2.8 mm notochordal length. the transformation stage began at 9 mm standard length, approximately 40 days after hatching. the appearance of the fins favored the displacement of pelagic larvae towards the bottom, acquiring their demersal habit during the juvenile stage
Early life stages of development of the red porgy Pagrus pagrus (Pisces, Sparidae) in captivity, Argentina Desarrollo de los estadios iniciales del besugo Pagrus pagrus (Pisces, Sparidae) en cautiverio, Argentina  [cached]
Laura Machinandiarena,Mónica Müller,Andrea López
Investigaciones Marinas , 2003,
Abstract: The early life history, from egg to juvenile, of red porgy Pagrus pagrus, in captivity is described. Yolk larvae were hatched 50 hours after fertilization, at 18°C water temperature. The opening of the mouth took place between the third and fourth day after hatching, corresponding to 2.6-2.8 mm notochordal length. The transformation stage began at 9 mm standard length, approximately 40 days after hatching. The appearance of the fins favored the displacement of pelagic larvae towards the bottom, acquiring their demersal habit during the juvenile stage Se describen los estadios iniciales, desde huevo hasta juvenil, del besugo Pagrus pagrus obtenidos en cautiverio. Las larvas vitelinas eclosionan 50 horas posteriores a la fertilización, a una temperatura de 18°C. La apertura de la boca se produce entre el tercer y cuarto día posteriores a la eclosión, correspondiendo a 2,6-2,8 mm de longitud de la notocorda. La etapa de transformación comienza en larvas de 9 mm de longitud estándar y 40 días, aproximadamente. La formación de las aletas favorece el desplazamiento de las larvas pelágicas hacia el fondo, adquiriendo hábito demersal durante el estadio juvenil
Efficiency of co-feeding red porgy (Pagrus pagrus L.) larvae with live and compound diet
Aristizábal,Eddie O; Suárez,Julieta;
Revista de biología marina y oceanografía , 2006, DOI: 10.4067/S0718-19572006000200008
Abstract: the red porgy (pagrus pagrus) is an important commercial and recreational species with very good prospect for aquaculture. because significant mortalities, the mass production of this species is limited. this paper describes three weaning strategies to investigate their effects on the survival and growth of red porgy larvae reared in laboratory: a) traditional three-step weaning (rotifers - artemia - diet) (control); b) one-step early weaning by co-feeding (rotifers - artemia + diet), and c) one-step direct early weaning (rotifers - diet). sigificative differences were recorded among treatments (p<0.05). best survival rate (45.6 ± 7.6%) and growth (7.4 ± 0.5 mm) were found in treatment b. results indicate that co-feeding red porgy larvae with inert and live diets from day 20 after hatching is a promising weaning strategy in the hatchery of this species
Listonella anguillarum Isolated from Hatchery-Cultured Red Porgy Pagrus pagrus in Turkey
Jale Korun,Mehmet Gokoglu
Journal of Animal and Veterinary Advances , 2012,
Abstract: A Listonella anguillarum infection in cultured red porgy (Pagrus pagrus) is documented for the first time in this report. The infection was identified in a commercial hatchery in the Aegean near Bodrum, Turkey. Diseased red porgy were characterized by lethargy, anorexia, fin erosion and abdominal swelling. Haemorrhagies on the operculum, fins and over the surface of the body were seen. Internally, the liver and the kidney were pale. The spleen was enlarged. Ascites in the abdominal cavity was also observed. The identification of bacterial strains isolated from the affected fish was based on morphological (Gram staining and wet-mouth preparation), physiological and biochemical tests (API 20E). Mono-Va agglutination kit was also included to confirm the identification of the isolated bacteria. The principal histological changes in this study were haemosiderosis in the spleen and kidney, a massive depletion of haemopoietic elements in the spleen, haemorrhagies in the liver, intestinal walls and under the muscle tissue.
A new species of Anoplodiscus (Monogenea: Anoplodiscidae) parasitic on Pagrus pagrus (Osteichthyes: Sparidae) from the coastal zone of the State of Rio de Janeiro, Brazil
Paraguassú, Aline R;Luque, José L;Alves, Dimitri R;
Memórias do Instituto Oswaldo Cruz , 2002, DOI: 10.1590/S0074-02762002000800022
Abstract: a new species of anoplodiscus (monogenea, anoplodiscidae), parasitic on gills of the red porgy, pagrus pagrus, from the coastal zone of the state of rio de janeiro, brazil, is described and illustrated. the new species can be differentiated from the other species of this genus by the shape of the accessory piece of the copulatory complex, and the length of the vagina. this is the first record of a species of anoplodiscus in the neotropical region.
A new species of Anoplodiscus (Monogenea: Anoplodiscidae) parasitic on Pagrus pagrus (Osteichthyes: Sparidae) from the coastal zone of the State of Rio de Janeiro, Brazil  [cached]
Paraguassú Aline R,Luque José L,Alves Dimitri R
Memórias do Instituto Oswaldo Cruz , 2002,
Abstract: A new species of Anoplodiscus (Monogenea, Anoplodiscidae), parasitic on gills of the red porgy, Pagrus pagrus, from the coastal zone of the State of Rio de Janeiro, Brazil, is described and illustrated. The new species can be differentiated from the other species of this genus by the shape of the accessory piece of the copulatory complex, and the length of the vagina. This is the first record of a species of Anoplodiscus in the Neotropical region.
On the record of pug-headedness in snapper, Pagrus auratus (Forster, 1801) (Perciformes, Sparidae) from New Zealand
Laith JAWAD,Andrew HOSIE
Acta Adriatica , 2007,
Abstract: Pug-headedness in the snapper Pagrus auratus is reported for the first time from New Zealand, based on a specimen (aged 2+) collected from Whangarei Harbour. Severe damage to the underlying bones of the mouth and snout regions was noted. The mouth of the specimen was virtually closed. Several factors were attributed to the cause of these anomalies among which are genetic and epigenetic causes.
Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758) (Pisces: Sparidae)
Aristizabal,Eddie O;
Revista de biología marina y oceanografía , 2006, DOI: 10.4067/S0718-19572006000200009
Abstract: knowledge of the life history of fish larvae is of practical importance to understand variations in the survival rate not only for cultivated fish but also for fishery biology studies. with the aim of recognizing critical changes during the first days of life of red porgy larvae, the oxygen consumption, growth, and food utilization were studied. after hatching, the larvae were transferred to two 400 l fiberglass tanks with microalgae (nannochloropsis oculata) and enriched rotifers (brachionus plicatilis) as initial food. during the incubation and larval rearing, water temperature was kept at 18.0 ± 0.5oc and salinity ranged from 33.0 to 34.0 psu. results indicate a decrease in larval growth between day 3 and 4 after hatching, when larvae opened their mouths, began exogenous feeding and have almost exhausted their yolk sac and oil globule. at the end of this period, variations in the carbon and nitrogen content were also detected. oxygen consumption showed an isometric mass-specific change with an inflexion at day 6 after hatching, which was coincident with the inflation of the gas bladder and the development of gills. the nitrogen coefficient (nq) revealed a sudden change in the utilization of amino acids and lipids from endogenous reserves between the embryo and the newly hatched larvae. hatching and first feeding time are two critical changing moments for the larval survival of this species
Relationships between conditions for activating spermatozoa of four sparidae fishes and the fishes''ecological habits
四种鲷科鱼类的精子激活条件与其生态习性的关系

JIANG Shi-Gui,
汪世贵

生态学报 , 2000,
Abstract: The effect of salinity on motility of spermatozoa of four Sparidae fishes,yellowfin bream Sparus latus (Houttuyn),silver bream Rhabdosargus sarba (Forskal),black porgy Sparus macrocephalus (Basilewsky) and red seabream Pagrosomus major (Temminck et Schlegel),from South China Sea was studied in recent years.The comparison on the adaptive salinity ranges for activating spermatozoa of these species was made.And it was found that the lowest activating salinity of each of spermatozoa of yellowfin b...
PORGY: Strategy-Driven Interactive Transformation of Graphs
Oana Andrei,Maribel Fernández,Hélène Kirchner,Guy Melan?on
Electronic Proceedings in Theoretical Computer Science , 2011, DOI: 10.4204/eptcs.48.7
Abstract: This paper investigates the use of graph rewriting systems as a modelling tool, and advocates the embedding of such systems in an interactive environment. One important application domain is the modelling of biochemical systems, where states are represented by port graphs and the dynamics is driven by rules and strategies. A graph rewriting tool's capability to interactively explore the features of the rewriting system provides useful insights into possible behaviours of the model and its properties. We describe PORGY, a visual and interactive tool we have developed to model complex systems using port graphs and port graph rewrite rules guided by strategies, and to navigate in the derivation history. We demonstrate via examples some functionalities provided by PORGY.
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