Herranz-Jusdado, Juan Germán; Kása, É; Kollár, Timea; Gallego Albiach, Victor; Peñaranda, D.S.; Rozenfeld, Christoffer; Pérez Igualada, Luz María; Horváth, Ákos; Asturiano Nemesio, Juan Francisco(Journal of Visualized Experiments, 2018)
[EN] During the last years, several research groups have been working on the development and improvement of new protocols for the European eel handling and maturation. As of yet, weekly injections of human chorionic ...
MORINI, MARINA; Lafont, A. G.; Maugars, G.; Baloche, S.; Dufour, S.; Asturiano, Juan F.; Pérez Igualada, Luz María(Cambridge University Press, 2020-06)
[EN] In teleosts, vitellogenin (Vtg) is a phospholipoglycoprotein synthesized by the liver, released into the blood circulation and incorporated into the oocytes via endocytosis mediated by the Vtg receptor (VTGR) to form ...
Vilchez Olivencia, Maria Carmen; D. Pla; Gallego Albiach, Victor; Sanz, Libia; Pérez Igualada, Luz María; Asturiano Nemesio, Juan Francisco; Calvete, Juan J.; Peñaranda, D.S.(Elsevier, 2016-11)
[EN] By first time, 2DE protein profile of European eel seminal plasma has been determined. 14 different proteins corresponding to 9 major families were identified in seminal plasma, through hormonal treatment. Some of ...
Butts, Ian Anthony Ernest; Baeza Ariño, Rosa; Stottrup, Josianne Gatt; Kruger-Johnsen, Maria; Jacobsen, Charlotte; Pérez Igualada, Luz María; Asturiano Nemesio, Juan Francisco; Tomkiewicz, Jonna(Elsevier, 2015-05)
[EN] In order for European eel aquaculture to be sustainable, the life cycle should be completed in captivity. Development of broodstock diets may improve the species' reproductive success in captivity, through the production ...
Garzón Cortés, Victor Daniel Ladislao(Universitat Politècnica de València, 2008-05-07)
La producción de anguilas se basa en la captura de angulas, pero la captura de éstas no se ha podido incrementar al mismo ritmo que su demanda para el engorde en piscifactorías. La caída de las capturas de angulas llevó a ...
Pérez Igualada, Luz María; Peñaranda, D.S.; Dufour, S.; Baloche, S.; Palstra, A. P.; Van den Thillart, G.E.E.J.M.; Asturiano Nemesio, Juan Francisco(Elsevier, 2011-10-01)
[EN] We examined the effect of temperature in European silver eels during their maturation induced by injections of carp pituitary extract on endocrine parameters: pituitary fshß and lhß expression, plasma 17ß-estradiol ...
Vílchez Olivencia, María del Carmen(Universitat Politècnica de València, 2017-11-03)
In general, fish spermatozoa are immotile in the testis. Movement is activated due to the
osmotic shock (hypo- or hyperosmotic, depending on fish origin: freshwater or sea water
species) experienced when they are released ...
Francés Herrero, Emilio(Universitat Politècnica de València, 2018-09-18)
[ES] A diferencia de lo que ocurre en mamíferos, los espermatozoides de la mayoría de los peces se
encuentran inactivos en los testículos. Su activación se produce como consecuencia de un choque
osmótico (hiper o ...
Marí Herguido, Juan Ignacio(Universitat Politècnica de València, 2019-05-08)
[ES] La anguila europea (Anguilla anguilla) es una especie en peligro crítico de extinción debido, entre otras causas, a la sobrepesca. Para poder cerrar el ciclo de la anguila, es importante la maduración sexual en ...
[EN] Although it is widely accepted that osmolality and ion fluxes are the main factors triggering sperm motility in fish, a complex universal mechanism for sperm motility activation does not exist in fish, and studies of ...
[EN] Sperm activation involves ion fluxes as well as a previous maturation in the seminal plasma, something which has not been studied in depth in marine fish species. pH and potassium are probably involved in sperm ...
[EN] Seminal plasma characteristics, such as ionic composition and pH, are important for sperm maturation and further motility. In this work, a first batch of experiments evaluated the effect of the absence of several ions ...
[EN] The objective of this study was evaluating the effects on the growth rate and flesh quality of separating larvae according to their larval width in cultured gilthead seabream (Sparus aurata, L.). Progeny from two ...
[EN] Gonadotropin-releasing hormone receptor (GnRH-R) activation stimulates synthesis and release of
gonadotropins in the vertebrate pituitary and also mediates other processes both in the brain and in
peripheral tissues. ...
[EN] Reproduction in captivity is a key study issue in Anguilla anguilla as a possible solution for its dwindling population. Understanding the mechanisms controlling the production of ribosomal building blocks during ...
[EN] Characterization of all the progestin receptor genes (PRs) found in the European eel has been performed. There were five membrane PRs (mPRs): mPR alpha (alpha), mPRAL1 (alpha-likel), mPRAL2 (alpha-like2), mPRy (gamma), ...
Herranz-Jusdado, Juan Germán; Rozenfeld, Christoffer; MORINI, MARINA; Pérez Igualada, Luz María; Asturiano Nemesio, Juan Francisco; Gallego Albiach, Victor(Elsevier, 2019)
[EN] In the past three decades the European eel Anguilla anguilla experienced up to 99% decline in recruitment in some parts of its distribution range, thus breeding in captivity is nowadays considered key in order to save ...
[EN] This study looks at the correlations that fatty acids have with different tissues in the European eel (Anguilla anguilla L.) during hormonally-induced sexual maturation, with different sperm quality parameters. In ...
[EN] The use of high quality gametes from both males and females during in vitro fertilization (IVF) trials is an essential step in order to achieve high fertilization and hatching rates. Although aquaculture hatcheries ...
Pérez Igualada, Luz María; Vilchez Olivencia, Maria Carmen; Gallego Albiach, Victor; MORINI, MARINA; Peñaranda, D.S.; Asturiano Nemesio, Juan Francisco(Elsevier, 2016-01)
[EN] Sperm from European eel males treated with hCG(rec), was washed in a calcium free extender, and sperm motility was activated both in the presence (seawater, SW) and in the absence of calcium (NaCI + EDTA), and treated ...