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Ricardo Tomás Pereyra-Ortega


Ricardo Tomás Pereyra-Ortega
+46 31 786 9617

Postal Address: Tjärnö, 45296 Strömstad
Visiting Address: Tjärnö , 45296 Strömstad

Department of Marine Sciences (More Information)
Box 461
405 30 Göteborg
Visiting Address: Carl Skottsbergs gata 22 B , 413 19 Göteborg

About Ricardo Tomás Pereyra-Ortega

Research interest:
My research interests are in evolutionary biology. I use molecular and experimental approaches to investigate the distribution of genetic variation and patterns of differentiation in natural populations (particularly aquatic organisms). The aim of such studies is to test hypotheses concerning the evolutionary history of species and particularly the mechanisms of adaptation and speciation. Other interests are to investigate the species life history traits and to assess exploited species populations.

Speciation mechanisms

Speciation in fucoid algae in the Baltic Sea
I am currently investigating the speciation mechanisms in fucoid algae from the Baltic and North Seas. This group provides an extraordinary system to investigate postglacial colonization and ecological differentiation under extreme environmental conditions.
I am mainly interested in demographic reconstruction of brown algae, particularly of the Fucus vesiculosus – F. radicans complex from the Baltic Sea coasts, to determine the geographical origin and mechanisms responsible for the ecologically divergent taxa.

The effects of Baltic-North Sea salinity transition on natural populations
It has been suggested that ecologically marginal environments harbour populations that experience extreme selection regimes and quite often these environments are also geographically marginal. The Baltic Sea, for example, is an extreme environment, geographically peripheral and ecologically marginal with low winter temperatures and permanently low salinities ranging from 1-2psu to 25psu. Populations inhabiting this area are therefore expected to experience life history changes that may influence their genetic set up.
I am mainly interested in the adaptations of the Fucus vesiculosus – F. radicans complex across environmental gradients, particularly salinity conditions in the Baltic and North Sea coasts.

Stock delineation and population structure in conservation of marine species
Advances in biotechnology have generated new techniques that can be applied to long-standing problems in fisheries. I am interested in using these innovative techniques and developing molecular tools to examine the long-term genetic integrity of species and to assess the stock structure of the marine resources.
Another critical question I am interested in is the identification of the origins and unique genetic entities in marine species. This information is vital in assessing the ranges and make-up of management units for their effective conservation.

Latest publications

DNA Extraction Protocols for Whole-Genome Sequencing in Marine Organisms
Marina Panova, Henrik Aronsson, R. Andrew Cameron, Peter Dahl, Anna Godhe et al.
Marine Genomics: Methods and Protocols, New York, NY, Springer New York, Chapter in book 2016
Chapter in book

Complex spatial clonal structure in the macroalgae Fucus radicans with both sexual and asexual recruitment
Angelica Ardehed, Daniel H Johansson, E. Schagerstrom, L. Kautsky, Kerstin Johannesson et al.
Ecology and Evolution, Journal article 2015
Journal article

Does population genetic structure support present management regulations of the northern shrimp (Pandalus borealis) in Skagerrak and the North Sea?
H. Knutsen, P. E. Jorde, E. B. Gonzalez, O. R. Eigaard, Ricardo T. Pereyra et al.
Ices Journal of Marine Science, Journal article 2015
Journal article

Genetic biodiversity in the Baltic Sea: Species-specific patterns challenge management
L. Wennerström, L. Laikre, N. Ryman, F. M. Utter, N. I. Ab Ghani et al.
Biodiversity and Conservation, Journal article 2013
Journal article

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Parallel speciation or long-distance dispersal? Lessons from seaweeds (Fucus) in the Baltic Sea
Ricardo T. Pereyra, C. J. Huenchunir, Daniel H Johansson, H. Forslund, L. Kautsky et al.
Journal of Evolutionary Biology, Journal article 2013
Journal article


Isolation and characterization of nuclear microsatellite loci in the northern shrimp, Pandalus borealis
Ricardo T. Pereyra, J-I. Westgaard, Mikael Dahl, T. Johansen, H. Knutsen et al.
Conservation Genetics Resources, Journal article 2012
Journal article



Rapid speciation of Fucus radicans in the Baltic Sea
Ricardo T. Pereyra
9th International Phycological Congress Japan, Poster 2009


Showing 11 - 20 of 24

Page Manager: Annika Wall|Last update: 7/1/2015

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