Professor Harald Rosenthal's 80th birthday

On June 7-10th, 2017 Ákos went to Hamburg and Neu Wulmstorf, Germany to participate at the celebration of the 80th birthday of Professor Harald Rosenthal, professor of the University of Kiel, founder and honorary editor of the Journal of Applied Ichthyology, president of the World Sturgeon Conservation Society, Past President of the European Aquaculture Society (formerly known as the European Mariculture Society), holder of honorary doctorates at several universities (including ours) whose groundbreaking work in various fields of aquaculture was an inspiration of many younger scientists. Professor Rosenthal took a very active part in the formation of the AQUAGAMETE community and COST Action and supported the biennial International Workshops on the Biology of Fish Gametes from the very beginning by publishing the proceedings of these meetings in his journal. For this reason Professor Juan F. Asturiano of the Universitat Politècnica de València and Ákos as representatives of the former COST Action FA1205 AQUAGAMETE gave a presentation of the results of the Action at the mini-conference organized on the first day of the birthday celebrations in the town hall of Neu Wulmstorf and then attended the birthday dinner given in honor of Professor Rosenthal. Both events were attended by a multitude of former students and friends showing his impact on the formation of European aquaculture.
Dear Harald, we wish you a very happy birthday and many more years in good health!

Professor Juan F. Asturiano, Professor Harald Rosenthal and Ákos in Hamburg

Professor Rosenthal giving an introductory speech at the mini-conference organized before his birthday celebration

The birthday celebration at the Kirschenland restaurant

Even the dessert was adjusted to the special occasion


Visit of Beata Cejko

Between May 8th and June 3rd we had the pleasure of hosting Dr. Beata Irena Cejko of the Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn, Poland. Beata carried out research on the storage of common carp sperm and spend countless hours in front of our CASA system. During her stay, our team also visited Novi Sad in Serbia to strengthen group cohesion and to try delicious Serbian food. Hopefully, Beata had good results in her research and we will be able to publish them soon. Thank you, Beata, and you are always welcome to come back to our group.

Beata and the CASA system she spend hours working on

Sperm collection from our carp broodstock
The team in Novi Sad, Serbia


International Conference of the Hungarian Laboratory Animal Association, 25. May 2017

Timi and Eszti have participated at the International Conference of the Hungarian Laboratory Animal Association, organized at the University of Veterinary Medicine (Budapest).

Timi presenting her poster about an in vitro toxicological test system based on zebrafish sperm analysis

Eszti presenting her poster about vitrification of zebrafish spermatogonia


Video protocol for zebrafish testis vitrification

During the previous period, we have prepared a video protocol for the video journal JoVE https://www.jove.com/ regarding vitrification of zebrafish testis. This publication is supported by the COST Action FA 1205 AQUAGAMETE https://aquagamete.webs.upv.es/ It was a really nice and new experience for the whole team. 


New paper accepted in Cryobiology

A new paper with the authorship of Jelena Lujić was accepted for publication in Cryobiology, entitled `First successful vitrification of salmonid ovarian tissue`

LujićJ., Marinović Z., Sušnik Bajec S., Djurdjevič I., Kása E., Urbányi B., HorváthÁ. 2017. First successful vitrification of salmonid ovarian tissue.Cryobiology, in press. DOI: 10.1016/j.cryobiol.2017.04.005


Due to a lack of cryopreservation protocols for fish eggs and embryos, alternative techniques which will enable storage of female genetic resources are crucial for future development of reproduction management in conservation biology and aquaculture. Experiments were conducted to develop an optimal vitrification protocol for cryopreservation of brown trout Salmo trutta juvenile ovarian tissue. Needle immersed vitrification (NIV) method was used where ovaries were pinned on an acupuncture needle, passaged through equilibration and vitrification solutions containing different combinations and concentrations of methanol (MeOH), propylene glycol (PG) and dimethyl sulfoxide (Me2SO) and subsequently plunged into liquid nitrogen. Vitrification solutions containing equal cryoprotectant concentrations (3M Me2SO and 3M PG) yielded the highest oogonia survival rates (up to 40%) and qualitatively and quantitatively un-altered perinucleolar follicles. The method developed for brown trout could be applied to the conservation of female genetic resources of other salmonid species, including endangered and endemic species or populations.


New paper accepted in Aquaculture

A new paper with the authorship of Ákos Horváth was accepted for publication in Aquaculture, entitled Cryobanking of aquatic species.

Sonia Martínez-Páramo, Ákos Horváth, Catherine Labbé, Tiantian Zhang, Vanesa Robles, Paz Herráez, Marc Suquet, Serean Adams, Ana Viveiros, Terrence R. Tiersch, Elsa Cabrita- 2017. Cryobanking of aquatic species. Aquaculture, Volume 472, 1 April 2017, Pages 156–177. http://doi.org/10.1016/j.aquaculture.2016.05.042


This review is focused on the applications of genome cryobanking of aquatic species including freshwater and marine fish, as well as invertebrates. It also reviews the latest advances in cryobanking of model species, widely used by the scientific community worldwide, because of their applications in several fields. The state of the art of cryopreservation of different cellular types (sperm, oocytes, embryos, somatic cells and primordial germ cells or early spermatogonia) is discussed focusing on the advantages and disadvantages of each procedure according to different applications. A special review on the need of standardization of protocols has also been carried out. In summary, this comprehensive review provides information on the practical details of applications of genome cryobanking in a range of aquatic species worldwide, including the cryobanks established in Europe, USA, Brazil, Australia and New Zealand, the species and type of cells that constitute these banks and the utilization of the samples preserved.


Hungarian Molecular Life Sciences 2017

Jelena and Zoran have participated at the conference Hungarian Molecular Life Sciences 2017, organized by Hungarian Biochemical Society and Hungarian Genetical Society in Eger, Hungary, from 31/3/2017 – 2/4/2017.
The new results of our research group were presented by oral presentation:
Lujić J., Marinović Z., Sušnik-Bajec S., Yoshizaki G., Kása E., Urbányi B., Horváth Á. 2017. Germline stem cell cryopreservation and transplantation. [Abstract] Hungarian Molecular Life Sciences 2017, Hungary, 31.3 – 2.4.2017; Eger, pp. 91.

Congress hall 1

Congress hall 2 and poster section

Professional exhibition


Questions at the end