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 ...
SEBASTIAO, HELDER JOSEFO DAVID(Universitat Politècnica de València, 2012-05-17)
Se llevaron a cabo actividades relacionadas con la producción de fitoplancton, producción de artemia y rotíferos, y se participó en prácticas relacionadas con aspectos sanitarios, manejo de sistemas de recirculación acuícola, ...
[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 aim of this study was to test the artificial seminal plasma (ASP) as the extender as well as methanol as the cryoprotectant for cryopreservation, and to collect information on the fertilizing capacity of cryopreserved ...
[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 ...
Huayanay Ostos, Jhons Edikzon(Universitat Politècnica de València, 2020-02-14)
[ES] Solea senegalensis, exhibe disfunciones reproductivas en cautiverio que limitan la producción. Los machos salvajes y F1 producen poco volumen de semen y al momento de extracción de gametos es casi inevitable la ...
Morini, Marina Ange Marie(Universitat Politècnica de València, 2016-09-01)
[EN] The European eel (Anguilla anguilla, L., 1758) population is in dramatic decline, so much so that this species has been listed as "Critically Endangered" on the Red List of Threatened Species, by the International ...
[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), ...
Horváth, Áttila; Asturiano Nemesio, Juan Francisco; Rosenthal, H.(Wiley, 2012-12)
[EN] Workshop sessions were organized along three major topics:
a) Gamete preservation including short- and long-term preservation
as well as cryogenic storage of fish sperm, eggs,
oocytes and primordial germ cells ...
Ortiz Casanova, María Teresa(Universitat Politècnica de València, 2021-07-23)
[ES] La anguila europea (Anguilla anguilla) es una especie de elevado interés pesquero y una de las especies importantes para la acuicultura mundial, pero su producción actual todavía depende de las capturas de angulas del ...
Asturiano Nemesio, Juan Francisco; Cabrita, Elsa; Horváth, Ákos(Elsevier, 2017)
[EN] Protocols for the cryopreservation of fish gametes have been developed for many different fish species, in special, freshwater salmonids and cyprinids. Methods for sperm freezing have progressed during the last decades ...
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 ...
García-Salinas, Pablo; Gallego Albiach, Victor; Asturiano, Juan F.(MDPI AG, 2021-07)
[EN] Many species of rays and skates are endangered, and ex situ conservation programs developed by research centers and public aquaria could improve this situation. To reproduce these species in captivity, scientists need ...