Leistungen
A key requisite to implement important project findings into real life fishery management and conservation is to gain knowledge and understanding on how key stakeholders assess the overall findings and recommendations from the project, especially the recommended “paradigm shift” in fish cultivation practices compared to current practices and established historic traditions. Further, it is necessary to evaluate the potential economic benefits of successful restoration and conservation of these iconic species to design economically efficient and socially acceptable programs. We will study how key stakeholders in fishery management, conservation, stocking and angling activities assess and make trade-offs between pros and cons of existing and new production techniques. Further, we will map and quantify the potential economic and social benefits (individual, social/cultural, and economic) of successful restoration and conservation of iconic species Atlantic salmon, European eel, and sturgeon at the level of local communities in Germany, France and Norway.
Innovative production strategies for fish conservation and managementIn response to the dramatic decline in wild stocks of many of the world´s fish species, many attempts have been made to bolster declining stocks by releasing hatchery-reared juveniles back into the wild. However, current intensive hatchery procedures result in behaviourally naive juveniles which display physiological adaptations towards hatchery rearing conditions. These production deficiencies results in reduced survival and reproduction in the wild, and adapted rearing practices are required to increase the overall fitness under natural conditions instead of a focus on performance in a near constant commercial rearing environment. New production protocols will be designed that will increase the cognitive ability and physiological capabilities of fish as compared to those raised under traditional intensive hatchery conditions. This calls for a paradigm shift in hatchery management, moving away from traditional husbandry practices to new hatchery procedures (optimal stocking density, adapted fertilization strategies, environmental enrichment, variable feeding, variable physical parameters such as flow rate, direction of flow, temperature) aimed at increasing the physiological fitness and cognitive ability of raised fish, which in turn leads to increased post-release survival (stock enhancement), as well as improved release strategies.
Improved Broodstock ManagementBroodstock management involves all the appropriate measures taken by the farmer to enable a captive group of fish to undergo reproductive maturation and spawning. Currently, hormonal manipulation is commonly used as a management tool in the cultivation of the targeted species (eel, salmon and sturgeons), either to enhance the efficiency of egg production or to increase spermiation, both facilitating hatchery operations. We will set up new protocols for both gamete development and spawning induction of broodstock, through development of alternative treatments (including environmental changes like photoperiod or temperature, or gonadotropin usage (homologous pituitary hormones, recombinant hormones, neuropeptides) for inducing gamete production.
Improved Gamete Quality and ManagementEuropean eel and sturgeons are included in the IUCN as Critically Endangered species. To reduce fishing pressure, and the dependency of this industry on wild populations, and also for stocking purposes, it is important to successfully close the life-cycle of the eel in captivity. Improved gamete quality and management will also benefit production of wildtype conditioned sturgeon and salmon. At present, it is possible to obtain eel eggs or sperm for in vitro fertilization, but only after and very expensive hormonal treatments. Using environmental treatments or gonadotropin implants we plan to reduce or partially replace the standard hormonal treatments currently used to achieve sexual maturation, as well as obtaining a better gamete quality. Furthermore, there is a need to keep good quality sperm reserves in order to fertilize all the eggs when a good batch is obtained. Thus, short-term preservation and cryopreservation methods are required. Utilization of innovative transplantation techniques can help the development of gametes extracted from endangered species using more common species (shorter age of maturation) as the surrogate host. Furthermore, the use of germ cells for the creation of germline chimera is an expansion of this technique for application in cryopreservation platforms aimed at conservation of threatened genetic resources.
New in vitro and –omics technologiesThe complete genome sequence of Acipenser sturio will be mapped using an established de novo assembly pipeline and multiple tissue samples will be used to generate reference transcriptome profiles. Subsequently, these genomic resources will be used to develop new applications: (1) blood and fin clip samples obtained during artificial maturation trials will be used to generate minimally invasive maturation markers, the predictive value of which will be determined in a dedicated validation trial; (2) modified gonadotropins and neuronal signaling molecules will be designed for optimized artificial maturation of A. sturio; (3) molecular information about hormones and their receptors will allow the development of in vitro model systems for regulatory mechanism investigations, for alternatives to in vivo experiments and for reduction of number of animals used.
An Impress website will be set up for efficient communication of results and activities to the public to the scientific community and between the consortium members
Veröffentlichungen
Autoren:
Svetlana Yom-Din, Lian Hollander-Cohen, Joseph Aizen, Benjamin Boehm, Michal Shpilman, Matan Golan, Avshalom Hurvitz, Gad Degani, Berta Levavi-Sivan
Veröffentlicht in:
PLOS ONE, Ausgabe 11/9, 2016, Seite(n) e0162344, ISSN 1932-6203
Herausgeber:
Public Library of Science
DOI:
10.1371/journal.pone.0162344
Autoren:
Marina Morini, David S. Peñaranda, María C. Vílchez, Rasoul Nourizadeh-Lillabadi, Anne-Gaëlle Lafont, Sylvie Dufour, Juan F. Asturiano, Finn-Arne Weltzien, Luz Pérez
Veröffentlicht in:
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, Ausgabe 207, 2017, Seite(n) 79-92, ISSN 1095-6433
Herausgeber:
Elsevier BV
DOI:
10.1016/j.cbpa.2017.02.009
Autoren:
Hans J. Jansen, Michael Liem, Susanne A. Jong-Raadsen, Sylvie Dufour, Finn-Arne Weltzien, William Swinkels, Alex Koelewijn, Arjan P. Palstra, Bernd Pelster, Herman P. Spaink, Guido E. van den Thillart, Ron P. Dirks, Christiaan V. Henkel
Veröffentlicht in:
Scientific Reports, Ausgabe 7/1, 2017, ISSN 2045-2322
Herausgeber:
Nature Publishing Group
DOI:
10.1038/s41598-017-07650-6
Autoren:
Juan G. Herranz-Jusdado, Eszter Kása, Tímea Kollár, Víctor Gallego, David S. Peñaranda, Christoffer Rozenfeld, Luz Pérez, Ákos Horváth, Juan F. Asturiano
Veröffentlicht in:
Journal of Visualized Experiments, Ausgabe 131, 2018, ISSN 1940-087X
Herausgeber:
MYJoVE Corporation
DOI:
10.3791/56835
Autoren:
Marina Morini, David S. Peñaranda, M. Carmen Vílchez, Helge Tveiten, Anne-Gaëlle Lafont, Sylvie Dufour, Luz Pérez, Juan F. Asturiano
Veröffentlicht in:
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, Ausgabe 203, 2017, Seite(n) 91-99, ISSN 1095-6433
Herausgeber:
Elsevier BV
DOI:
10.1016/j.cbpa.2016.08.020
Autoren:
D.S. Peñaranda, V. Gallego, C. Rozenfeld, J.G. Herranz-Jusdado, L. Pérez, A. Gómez, I. Giménez, J.F. Asturiano
Veröffentlicht in:
Theriogenology, Ausgabe 107, 2018, Seite(n) 6-20, ISSN 0093-691X
Herausgeber:
Elsevier BV
DOI:
10.1016/j.theriogenology.2017.11.002
Autoren:
Hannah L. Harrison, Stine Rybråten, Øystein Aas
Veröffentlicht in:
Human Ecology, Ausgabe 46/4, 2018, Seite(n) 449-459, ISSN 0300-7839
Herausgeber:
Springer
DOI:
10.1007/s10745-018-0001-3
Autoren:
Hannah L. Harrison, Sophia Kochalski, Robert Arlinghaus, Øystein Aas
Veröffentlicht in:
Fisheries Research, Ausgabe 204, 2018, Seite(n) 348-360, ISSN 0165-7836
Herausgeber:
Elsevier BV
DOI:
10.1016/j.fishres.2018.02.022
Autoren:
Carina Caldeira, Almudena García-Molina, Anthony Valverde, Daznia Bompart, Megan Hassane, Patrick Martin, Carles Soler
Veröffentlicht in:
Reproduction, Fertility and Development, Ausgabe 30/6, 2018, Seite(n) 897, ISSN 1031-3613
Herausgeber:
Commonwealth Scientific and Industrial Research Organization Publishing
DOI:
10.1071/RD17466
Autoren:
Daznia Bompart, Almudena García-Molina, Anthony Valverde, Carina Caldeira, Jesús Yániz, Manuel Núñez de Murga, Carles Soler
Veröffentlicht in:
Reproduction, Fertility and Development, Ausgabe 30/6, 2018, Seite(n) 810, ISSN 1031-3613
Herausgeber:
Commonwealth Scientific and Industrial Research Organization Publishing
DOI:
10.1071/RD17551
Autoren:
V. Gallego, J. G. Herranz-Jusdado, C. Rozenfeld, L. Pérez, Juan F. Asturiano
Veröffentlicht in:
Fish Physiology and Biochemistry, Ausgabe 17 Apr, 2018, Seite(n) 1457–1467, ISSN 0920-1742
Herausgeber:
Kluwer Academic Publishers
DOI:
10.1007/s10695-018-0505-1
Autoren:
Aurora Campo, Anne-Gaëlle Lafont, Benjamin Lefranc, Jérôme Leprince, Hervé Tostivint, Nédia Kamech, Sylvie Dufour, Karine Rousseau
Veröffentlicht in:
Frontiers in Endocrinology, Ausgabe 9, 2018, Seite(n) 304, ISSN 1664-2392
Herausgeber:
Frontiers
DOI:
10.3389/fendo.2018.00304
Autoren:
Carina Caldeira, Carles Soler
Veröffentlicht in:
Journal of Visualized Experiments, Ausgabe 137, 2018, ISSN 1940-087X
Herausgeber:
MYJoVE Corporation
DOI:
10.3791/56823
Autoren:
Sophia Kochalski, Carsten Riepe, Marie Fujitani, Øystein Aas, Robert Arlinghaus
Veröffentlicht in:
Conservation Biology, 2018, ISSN 0888-8892
Herausgeber:
Blackwell Publishing Inc.
DOI:
10.1111/cobi.13180
Autoren:
Daan Mes, Kristine von Krogh, Marnix Gorissen, Ian Mayer, Marco A. Vindas
Veröffentlicht in:
Frontiers in Behavioral Neuroscience, Ausgabe 12, 2018, ISSN 1662-5153
Herausgeber:
Frontiers Research Foundation
DOI:
10.3389/fnbeh.2018.00210
Autoren:
Anthony Valverde, Mónica Madrigal, Carina Caldeira, Daznia Bompart, Javier Núñez de Murga, Sandra Arnau, Carles Soler
Veröffentlicht in:
Reproduction in Domestic Animals, 2018, ISSN 0936-6768
Herausgeber:
Blackwell Publishing Inc.
DOI:
10.1111/rda.13320
Autoren:
J.G. Herranz-Jusdado, V. Gallego, M. Morini, C. Rozenfeld, L. Pérez, E. Kása, T. Kollár, A. Depincé, C. Labbé, Á. Horváth, J.F. Asturiano
Veröffentlicht in:
Aquaculture, Ausgabe 498, 2019, Seite(n) 539-544, ISSN 0044-8486
Herausgeber:
Elsevier BV
DOI:
10.1016/j.aquaculture.2018.09.006
Autoren:
Aydee Meza, Carina Caldeira, Anthony Valverde, César Ordóñez, Enrique Ampuero, Hernán Cucho, Carles Soler
Veröffentlicht in:
Reproduction in Domestic Animals, Ausgabe 53/6, 2018, Seite(n) 1415-1423, ISSN 0936-6768
Herausgeber:
Blackwell Publishing Inc.
DOI:
10.1111/rda.13284
Autoren:
Sahana Shivaramu, Carlos E. Santo, Vojtěch Kašpar, David Bierbach, Jörn Gessner, Marek Rodina, David Gela, Martin Flajšhans, Sven Wuertz
Veröffentlicht in:
Journal of Applied Ichthyology, 2018, ISSN 0175-8659
Herausgeber:
Blackwell Publishing Inc.
DOI:
10.1111/jai.13834
Autoren:
J.G. Herranz-Jusdado, C. Rozenfeld, M. Morini, L. Pérez, J.F. Asturiano, V. Gallego
Veröffentlicht in:
Aquaculture, Ausgabe 501, 2019, Seite(n) 527-536, ISSN 0044-8486
Herausgeber:
Elsevier BV
DOI:
10.1016/j.aquaculture.2018.12.015
Autoren:
Maria Cámara-Ruiz, Carlos Espirito Santo, Joern Gessner, Sven Wuertz
Veröffentlicht in:
Aquaculture, Ausgabe 502, 2019, Seite(n) 12-17, ISSN 0044-8486
Herausgeber:
Elsevier BV
DOI:
10.1016/j.aquaculture.2018.12.021
Autoren:
J.G. Herranz-Jusdado, V. Gallego, C. Rozenfeld, M. Morini, L. Pérez, J.F. Asturiano
Veröffentlicht in:
Aquaculture, Ausgabe 506, 2019, Seite(n) 42-50, ISSN 0044-8486
Herausgeber:
Elsevier BV
DOI:
10.1016/j.aquaculture.2019.03.019
Autoren:
Carina Caldeira, Sandra Hernández-Ibáñez, Anthony Valverde, Patrick Martin, Juan G. Herranz-Jusdado, Víctor Gallego, Juan F. Asturiano, Borys Dzyuba, Martin Pšenička, Carles Soler
Veröffentlicht in:
Aquaculture, Ausgabe 502, 2019, Seite(n) 223-231, ISSN 0044-8486
Herausgeber:
Elsevier BV
DOI:
10.1016/j.aquaculture.2018.12.001
Autoren:
S. Shivaramu, D.T. Vuong, M. Havelka, H. Šachlová, I. Lebeda, V. Kašpar, M. Flajšhans
Veröffentlicht in:
Czech Journal of Animal Science, Ausgabe 64/No. 2, 2019, Seite(n) 78-88, ISSN 1212-1819
Herausgeber:
Ceska Akademie Zemedelskych Ved
DOI:
10.17221/165/2018-cjas
Autoren:
Mitchell S. Fleming, Gersende Maugars, Anne-Gaëlle Lafont, Jocelyn Rancon, Romain Fontaine, Rasoul Nourizadeh-Lillabadi, Finn-Arne Weltzien, Elena Santidrian Yebra-Pimentel, Ron Dirks, Stephen D. McCormick, Karine Rousseau, Patrick Martin, Sylvie Dufour
Veröffentlicht in:
Scientific Reports, Ausgabe 9/1, 2019, ISSN 2045-2322
Herausgeber:
Nature Publishing Group
DOI:
10.1038/s41598-019-40019-5
Autoren:
Elena Santidrián Yebra-Pimentel, Marina Gebert, Hans J. Jansen, Susanne A. Jong-Raadsen, Ron P.H. Dirks
Veröffentlicht in:
Fish & Shellfish Immunology, Ausgabe 88, 2019, Seite(n) 508-517, ISSN 1050-4648
Herausgeber:
Academic Press
DOI:
10.1016/j.fsi.2019.03.014
Autoren:
Sophia Kochalski
Veröffentlicht in:
2017
Herausgeber:
University of Liverpool
Autoren:
Daan Mes
Veröffentlicht in:
2018, ISBN 978-82-575-1766-3
Herausgeber:
Norwegian University of Life Sciences (PhD thesis 2018:80)
Autoren:
Elia Ciani
Veröffentlicht in:
2018, ISBN 978-82-575-1770-0
Herausgeber:
Norwegian University of Life Sciences (PhD thesis 2018:105)
Autoren:
Hannah Harrison
Veröffentlicht in:
2018, ISBN 978-82-575-1544-7
Herausgeber:
Norwegian University of Life Sciences (2018:76)
Autoren:
Aurora Campo
Veröffentlicht in:
2018
Herausgeber:
Museum National d' Historie Naturelle
Autoren:
Mitchell S. Fleming
Veröffentlicht in:
2018
Herausgeber:
Museum National d' Historie Naturelle
Autoren:
H Harrison, D Mees, M Fleming, and all IMPRESS students
Veröffentlicht in:
Euroscientist, 2016
Herausgeber:
Euroscience
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