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Browsing by Subject "Anguilla anguilla"

Now showing items 1-20 of 22

Cold seawater induces early maturational stages in the BPG axis of European eel males

Rozenfeld, Christoffer; García-Carpintero-Burgos, Víctor; Pérez Igualada, Luz María; Gallego Albiach, Victor; Herranz-Jusdado, Juan Germán; Tveiten, Helge; Johnsen, Helge K.; Fontaine, Romain; Weltzien, F.A.; Cañizares Sales, Joaquín; Asturiano, Juan F.; Peñaranda, D.S. (Springer (Biomed Central Ltd.), 2019-07-22)

[EN] BackgroundThe impossibility of closing the life cycle of the European eel (Anguilla anguilla) in captivity troubles the future of this critically endangered species. In addition, the European eel is a highly valued ...
Comparison of European eel sperm cryopreservation protocols with standardization as a target

Herranz-Jusdado, Juan Germán; Gallego Albiach, Victor; MORINI, MARINA; Rozenfeld, Christoffer; Pérez Igualada, Luz María; Kása, E.; Kollár, T.; Depincé, A.; Labbé, C.; Horváth, Á.; Asturiano Nemesio, Juan Francisco (Elsevier, 2019)

[EN] The critical situation of the European eel (Anguilla anguilla) has urged the development of sperm cryopreservation protocols for reproduction in captivity and cryobanking. In the last years, two research groups have ...
Development of innovative methods for induction of European eel (Anguilla anguilla) spermatogenesis

Rozenfeld, Christoffer (Universitat Politècnica de València, 2019-09-02)

[ES] Resumen Como pez de gran valor económico, procedente de una de las líneas de teleósteos más antiguas, con un ciclo de vida misterioso, un potencial de acuicultura excepcional, y con importancia cultural y actividades ...
Efectos de pretratamientos con agua marina fría en el proceso de espermatogénesis y en el rendimiento reproductivo de los machos de anguila europea

Suay Costa, María Isabel (Universitat Politècnica de València, 2021-10-19)

[ES] Estudios recientes han descubierto que el agua marina fría estimula al eje cerebro-hipófisis-gónada e induce un desarrollo sexual temprano en los machos de anguila europea (Anguilla anguilla). Estos resultados sugieren ...
Effect of the probiotic Lactobacillus rhamnosus on the expression of genes involved in European eel spermatogenesis

Vilchez Olivencia, Maria Carmen; Santangeli, Stefania; Maradonna, Francesca; Gioacchini, Giorgia; Verdenelli, Cristina; Gallego Albiach, Victor; Peñaranda, D.S.; Tveiten, Helge; Pérez Igualada, Luz María; Carnevali, Oliana; Asturiano Nemesio, Juan Francisco (Elsevier, 2015-11)

[EN] Positive effects of probiotics on fish reproduction have been reported in several species. In the present study, 40 male European eels were weekly treated with recombinant hCG for 9 weeks and with three different ...
European eel sperm storage: optimization of short-term protocols and cryopreservation of large volumes

Herranz-Jusdado, Juan Germán; Gallego Albiach, Victor; Rozenfeld, Christoffer; MORINI, MARINA; Pérez Igualada, Luz María; Asturiano Nemesio, Juan Francisco (Elsevier, 2019)

[EN] Maturation in captivity of European eel (Anguilla anguilla) requires long and costly hormonal treatments that often lead to asynchronic maturation between sexes. Therefore, optimization of sperm short-term storage ...
First production of larvae using cryopreserved sperm. Effects of preservation temperature and cryopreservation on European eel sperm fertilization capacity

Asturiano Nemesio, Juan Francisco; Sorensen, S.R.; Pérez Igualada, Luz María; Lauesen, P.; Tomkiewicz, J. (Blackwell Publishing, 2016)

[EN] Contents Sperm cryopreservation is a useful tool in captive fish reproduction management, that is to synchronize gamete production, especially in the case of species as the European eel, where the time of female ...
Identification and stable expression of vitellogenin receptor (VTGR) through vitellogenesis in the European eel

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 ...
Influence of temperature regime on endocrine parameters and vitellogenesis during experimental maturation of European eel (Anguilla anguilla) females

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 ...
Influence of the ionic and protein environment on sperm motility activation in the European eel

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 ...
Intracellular pH regulation and sperm motility in the European eel

Pérez Igualada, Luz María; Gallego Albiach, Victor; Asturiano, Juan F. (Elsevier, 2020-03-15)

[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 ...
Molecular markers of oocyte differentiation in European eel during hormonally induced oogenesis

Rojo-Bartolomé, Iratxe; Martínez-Miguel, Leticia; Lafont, Anne-Gaëlle; Vilchez Olivencia, Maria Carmen; Asturiano Nemesio, Juan Francisco; Pérez Igualada, Luz María; Cancio, Ibon (Elsevier, 2017)

[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 ...
Optimización de los protocolos de conservación de gametos de anguila europea a corto y largo plazo

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 ...
Role of calcium on the initiation of sperm motility in the European eel

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 ...
Role of potassium and pH on the initiation of sperm motility in the European eel

Vilchez Olivencia, Maria Carmen; MORINI, MARINA; Peñaranda, D.S.; Gallego Albiach, Victor; Asturiano Nemesio, Juan Francisco; Pérez Igualada, Luz María (Elsevier, 2017)

[EN] The role of potassium from the seminal plasma and/or the activation media was examined by selectively removing from this media, and by testing the use of channel inhibitors and a K-ionophore. Sperm motility was measured ...
Sodium affects the sperm motility in the European eel

Vilchez Olivencia, Maria Carmen; MORINI, MARINA; Peñaranda, D.S.; Gallego Albiach, Victor; Asturiano Nemesio, Juan Francisco; Pérez Igualada, Luz María (Elsevier, 2016-08)

[EN] The role of seminal plasma sodium and activation media sodium on sperm motility was examined by selectively removing the element from these two media, in European eel sperm. Sperm size (sperm head area) was also ...
Sperm physiology and quality in two marine teleosts: Anguilla anguilla & Takifugu niphobles

Gallego Albiach, Victor (Universitat Politècnica de València, 2013-12-20)

The conservation status of the species studied in this thesis (European eel and pufferfish) is currently frail, thus the main goal of this research was to develop, improve and apply several techniques and protocols ...
Sperm production and quality in European eel (Anguilla anguilla) in relation to hormonal treatment

Koumpiadis, Paraskevas; Sganga, Daniela E.; Politis, Sebastian N.; Gallego Albiach, Victor; Butts, Ian A.E.; Asturiano, Juan F.; Batjakas, Ioannis E.; Tomkiewicz, Jonna (Blackwell Publishing, 2021-12)

[EN] Aquaculture production relies on controlled management of gametogenesis, especially in species where assisted reproduction is needed for obtaining gametes in captivity. The present study used human chorionic gonadotropin ...
Study of male reproductive physiology and sperm conservation in the european EEL ( Anguilla anguilla, L.)

Sánchez Peñaranda, David (Universitat Politècnica de València, 2008-09-12)

La anguila europea es una especie de gran importancia comercial en la acuicultura europea, pero el dramático descenso de las poblaciones naturales ha provocado la inclusión de esta especie en la lista CITES (convención del ...
Temperature modulates testis steroidogenesis in European eel

Peñaranda, D.S.; MORINI, MARINA; Tveiten, Helge; Vilchez Olivencia, Maria Carmen; Gallego Albiach, Victor; Dirks, Ron; van den Thillart, Guido E.E.J.M.; Pérez Igualada, Luz María; Asturiano Nemesio, Juan Francisco (Elsevier, 2016-07)

[EN] This study evaluates the effects of temperature on hCG-induced spermatogenesis in European eel (Anguilla anguilla), subjected to three thermal regimes: T10: 10 degrees C (first 4 weeks), 15 degrees C (next 3 weeks) ...