Ende dieses Seitenbereichs.

Beginn des Seitenbereichs: Inhalt:

Frühere Forschungsprojekte



Genetic characterization of Swiss grayling (in cooperation with Frank Cattaneo - HEPIA - Geneva - and financed by the Swiss Federal Office on Environment)

Genetic characterization of Mur River Huchen (Hucho hucho) - financed by the Provincial Government of Styria / Mur-Huchen genetischer Nachweis von Fremdbesatz und natürlicher Reproduktion - Im Auftrag der Steierische Landesregierung

This small contract was used to develop a high-resolution microsatellite screen for local stocks of this highly endangered species. Further, we aim to evaluate the conflicting perspectives on the source and viability of local stocks of Huchen in the Mur river around the city of Graz. Huchen dissappeared from this section of the Mur decades ago due to bad water quality. Large investments in domestic sewage treatment as well as the curtailing of industrial affluents have vastly improved the water quality of the Mur River, to the degree that such salmonid fish species like the Huchen, listed under the IUCN red list (International Union for the Conservation of Nature and Natural resources) are now reproducing in the middle of the city. A series of five new hydropower plants now threaten their existence in this reach of the river.


FWF-L229 Conservation of biological resources in Austria (with Joseph Wanzenböck, Limnology Research Station, Mondsee)

The project assesses the extent and effects of introgression of an introduced whitefish species Coregonus maraena (Baltic region) into a native whitefish species, Coregonus renke. Genetic analysis is based on the study of mitochondrial DNA and microsatellite loci. The interrelationship between genetic, morphological and ecological characteristics will be studied with special emphasis on the role of spatial and temporal isolating mechanisms. The study will be complemented using experimental methods (crosses) to assess hybrid compatibility, additive genetic variance of selected traits, and to establish an F2 generation for future mapping efforts of traits of interest (e.g. in aquaculture).

Isolation of microsatellite markers in Rutilus spp and their application to systematic revision in Ohrid, Skada and Prespa lakes

Done through an exchange grant with University of Montenegro, and carried out by Univ. Ass. Dragana Milosevic


Troutcheck (lower Austria & Styria)

This is essentially two projects (both 5 years in duration) financed separately by a group of government and private agencies, namely the provincial governments of Lower Austria and Styria, the Lower Austrian Fisheries Association, The Styrian Fisheries Association, and the Federal Ministry of Agriculture. The project is done in close collaboration with the Agricultural University in Vienna (Boku), and focuses on the modernization of brown trout fisheries management through the integration of both genetic and ecological perspectives. More than 90 populations of brown trout have been genetically typed for a suite of markers, in order to identify native gene pools, to provide brood material for future hatchery strains, and to characterize the natural regional variation found among populations. The effects of various rearing techniques on growth and survival were tested in field experiments, as well as the growth and survival of different hatchery strains.

Genetic Typing of brown trout from Salzburg

This contract comes for the Provincial Government of Salzburg under the direction of Dr. Paul Jäger.


Characterization of Sahkalin taimen, Parahucho perryii

In cooperation with the Wild Salmon Center, Portland, Oregon, USA

Microevolution of salmonid fishes: using ancient Lake Baikal as a natural laboratory to study the modes and mechanisms of vertebrate speciation -

This project was funded by the Portuguese Ministry of Science (FCT) in cooperation with the Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO), the Department of Vertebrate Zoology, Irkutsk State University (ISU), and myself. The project has formed the basis for more extended research on the genetic and phenotypic diversity of grayling throughout Siberia, an undertaking done in close collaboration with Dr. Igor Knizhin (ISU).

Microevolutionary studies of a primitive Asian salmonid genus Brachymystax lenok –

This project was also funded by FCT, in the form of a PhD grant and accompanying laboratory costs to Elsa Froufe, a Portuguese PhD candidate under the supervision of Prof. Paulo Alexandrino (CIBIO). The success of our efforts greatly depended on the close collaboration with Dr. Sergey Alekseev, from Koltsov's Institute of Developmental Biology.

Genetic Analysis of Slovenian Grayling –

An EU subcontract to characterize Soca River grayling and provide support for future management of brood stocks. The work was carried out by Marie-Curie post-doc, Simona Suśnik, and done in close collaboration with Dusan Jesensek who is overseeing broodstock management of Soca River salmonids.
Patterns and processes of salmonid diversification in Europe's oldest body of freshwater,Lake Ohrid –

A Marie-Curie post-doc and accompanying lab fees for Simona Suśnik to study the diversity of the genus Salmo in Lake Ohrid.


Kalkalpen National Park, Upper Austria –

Genetic typing of brown trout in order to identify native strains, in close cooperation with Reinhardt Haunschmidt, Federal Fisheries Institute, Austria


Microsatellite cloning in a salamander, Chioglossa lusitanica

Essentially part of the PhD work of Fernando Sequiera, done in collaboration with Nuno Ferrand from the Research Center in Biodiversity and Genetic Resources, Vairao, Portugal


Genetic Typing of Loire River Grayling

Funded by a French Fishing Agency, and carried out in close cooperation with Henri Persat, this project targets the genetic and morphological description of the highly unique lineage of grayling (Thymallus thymallus) found in the upper Loire River basin.


FWF- Genetic comparison of brown trout populations in Austria

The first genetic characterization of brown trout in Austrian waters, done in cooperation with Agricultural University, Vienna (BOKU) and the Veterinary University, Vienna

Assoz. Univ.-Prof.Dr. Steven Weiss

Kontakt

Universitätsplatz 2 A-8010 Graz
Telefon:+43 (0)316 380 - 5599

Web:https://homepage.uni-graz.at/de/steven.weiss/

Ende dieses Seitenbereichs.

Beginn des Seitenbereichs: Zusatzinformationen:

Ende dieses Seitenbereichs.