sábado, 15 de abril de 2017

Elvira Fatsini defiende su Tesis Doctoral



Elvira Fatsini, antigua alumna de nuestro Máster de Acuicultura, defendió su Tesis el pasado 11 de abril. El título de su trabajo es: Reproduction, olfaction and dominance behaviour in Senegalese sole (Solea senegalensis) y ha sido realizado en el Centre d´Aqüicultura del IRTA (Tarragona) bajo la dirección del Dr. Neil Duncan y con la tutoría de la Dra. Luz Pérez en la UPV.

El tribunal estuvo formado por la Dra. Alicia Felip del Instituto de Acuicultura de Torre la Sal (CSIC, Castellón), la Dra. Marie-Laure Bégout del IFREMER (La Rochelle, Francia) que actuó como Secretaria, y yo mismo que actué como Presidente.

Los artículos de Elvira enlazan aspectos etológicos, anatómicos y moleculares implicados en la reproducción del lenguado senegalés. La tesis estará disponible en breve en el repositorio Riunet de la UPV.

Enhorabuena Doctora!

Advances in fish gametes and embryo research



La revista Aquaculture ha publicado un número especial (Volume 472) titulado Recent advances in fish gametes and embryo research que recoge 10 reviews redactados por investigadores participantes en la Acción COST AQUAGAMETE y que recogen diversos aspectos de esta área de investigación.


El número especial está disponible en: http://www.sciencedirect.com/science/journal/00448486/472


Los títulos de los trabajos son:


-Biology of teleost primordial germ cells (PGCs) and spermatogonia: Biotechnological applications

-Hormonal manipulations for the enhancement of sperm production in cultured fish and evaluation of sperm quality

-Paternal contribution to development: Sperm genetic damage and repair in fish

-Energetics of fish spermatozoa: The proven and the possible

-Role of protein phosphorylation/dephosphorylation in fish sperm motility activation: State of the art and perspectives

-Fish semen proteomics — New opportunities in fish reproductive research

-Epigenetics in fish gametes and early embryo

-Maternal investment in fish oocytes and eggs: The molecular cargo and its contributions to fertility and early development

-Integrated control of fish metabolism, wellbeing and reproduction: The role of probiotic

-Cryobanking of aquatic species

lunes, 3 de abril de 2017

Publicados los Proceedings del 5th IWBFG

Ya se han publicado en un número especial de General and Comparative Endocrinology los Proceedings of the 5th International Workshop on the Biology of Fish Gametes celebrado en Ancona (Italia) en septiembre de 2015.
Son de libre acceso y están disponibles en:

lunes, 6 de febrero de 2017

Nuestro último artículo, aceptado en Comparative Biochemistry and Physiology, Part A



Nuclear and membrane progestin receptors in the European eel: characterization and expression in vivo through spermatogenesis
M. Morini, D.S. Peñaranda, M.C. Vílchez, R. Nourizadeh-Lillabadi, A.G. Lafont, S. Dufour, J.F. Asturiano, F.A. Weltzien, L. Pérez

Abstract

Characterization of all the progestin receptor genes (PRs) found in the European eel has been performed. There were five membrane PRs (mPRs): mPRα (alpha), mPRAL1 (alpha-like1), mPRAL2 (alpha-like2), mPRγ (gamma), mPRδ (delta) and two nuclear PRs (nPRs or PGRs): pgr1 and pgr2. In silico studies showed that the C and E(F)  domains of Pgr are well conserved among vertebrates whereas the A/B domain is not. Phylogeny and synteny analyses suggest that eel duplicated pgr (pgr1 and pgr2) originated from the teleost-specific third whole genome duplication (3R). mPR phylogeny placed three eel mPRs together with the mPRα clade, being termed mPRα, mPRAL1 and mPRAL2, while the other two eel mPRs clustered with mPRγ and mPRδ clades, respectively.
The in vivo study showed differential expression patterns along the brain-pituitary-gonad axis. An increase in nPR transcripts was observed in brain (in pgr1) and pituitary (in pgr1 and pgr2) through the spermatogenesis, from the spermatogonia B/spermatocyte stage to the spermiation stage. In the testis, mPRγ, mPRδ and pgr2 transcripts showed the highest levels in testis with A spermatogonia as dominant germ cell, while the highest mPRα, mPRAL1 and mPRAL2 transcripts were observed in testis from spermiating males, where the dominant germ cell were spermatozoa. Further studies should elucidate the role of both nuclear and membrane progestin receptors on eel spermatogenesis.



doi: 10.1016/j.cbpa.2017.02.009