lunes, 20 de septiembre de 2021

Participamos en el XIII Congreso de la AIEC, con premio incluido

 


Los pasados 16 y 17 de septiembre ha tenido lugar el XIII Congreso de la Asociación Ibérica de Endocrinología Comparada (AIEC), un evento on-line en el que hemos participado presentando dos posters:

Effect of cold temperature pre-treatments on the European eel spermatogenesis and spermiation

L. Ferrão, M. Morini, V. Gallego, A. Felip, A. Gómez, L. Pérez, J.F. Asturiano

Assessment of osmotic pumps as a method to induce sexual maturation of European eel males and females

M. Blanes-García, P. García-Salinas, M. Morini, A. Gómez, A. Felip, L. Pérez, J.F. Asturiano, V. Gallego


El trabajo de nuestra compañera Leonor Ferrão fue distinguido con el premio al mejor póster del congreso. Su trabajo recoge los primeros resultados del proyecto EELGONIA y se ha llevado a cabo en colaboración con Ana Gómez y Alicia Felip del Instituto de Acuicultura de Torra la Sal (CSIC, Castellón). Enhorabuena a todos los implicados!

miércoles, 8 de septiembre de 2021

Nuestro último artículo, publicado en Reproduction and Domestic Animals


Milt production and sperm quality in European eel (Anguilla anguilla) in relation to hormonal treatment

P. Koumpiadis, D.E. Sganga, S.N. Politis, V. Gallego, I.A.E. Butts, J.F. Asturiano, I.E. Batjakas, J. Tomkiewicz

 

Abstract

Aquaculture production relies on controlled management of gametogenesis, especially in species where assisted reproduction is needed for obtaining high-quality gametes in captivity. The present study used hormonal treatments to induce and sustain spermatogenesis in European eel (Anguilla anguilla), focusing on the effect of strip-spawning timing (12 vs. 24 h) after weekly administration of human chorionic gonadotropin and the necessity of a primer injection (in addition to weekly hormonal treatment), prior to strip-spawning (primer vs. no-primer). Sperm quality parameters included sperm density, assessed by hemocytometer counting and spermatocrit, as well as sperm kinematic (motility and velocity) parameters at three time points after onset of hormonal treatment (Weeks 9, 11, and 13). All males responded to hormonal treatment and spermiation was observed by Week 5. During the experimental timeline from Weeks 9 to 13, milt production and sperm kinetic parameters increased, while sperm density decreased. Variability in sperm kinetic traits was observed depending on strip-spawning timing (12 or 24 h) after hormone injection and the primer treatment did not show a significant effect on sperm quality. Moreover, spermatocrit values and hemocytometer counts were highly correlated. Overall, the hormonal treatment and stripping at two-week intervals provided suited milt production and high-quality sperm. Considering that each male may be stripped 4-5 times over the 2-3 months spawning season, handling and hormone administration can possibly be reduced by eliminating the primer.

Disponible en: http://doi.org/10.1111/rda.14011