scholarly journals Genetic species identification and low genetic diversity in Pseudocalanus acuspes of the Baltic Sea

2010 ◽  
Vol 33 (3) ◽  
pp. 507-515 ◽  
Author(s):  
T. Holmborn ◽  
E. Goetze ◽  
M. Pollupuu ◽  
A. Pollumae
Keyword(s):  
Genetic Diversity ◽  
Baltic Sea ◽  
Species Identification ◽  
The Baltic Sea ◽  
Low Genetic Diversity ◽  
Genetic Species Identification ◽  
The Baltic ◽  
Genetic Species

scholarly journals A marginal habitat, but not a sink: Ecological genetics reveal a diversification hotspot for marine invertebrates in the brackish Baltic Sea

2021 ◽  
Author(s):  
Jonas C Geburzi ◽  
Nele Heuer ◽  
Lena Homberger ◽  
Jana Kabus ◽  
Zoe Moesges ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Life History ◽  
Baltic Sea ◽  
North Sea ◽  
Native Species ◽  
The Baltic Sea ◽  
Evolutionary Trajectory ◽  
The North ◽  
The North Sea ◽  
The Baltic

Aim: Environmental gradients have emerged as important barriers structuring populations and species distributions. We set out to test whether a strong salinity gradient from marine to brackish, represented in a marginal northern European sea, should be considered a diversification hotspot or a population sink, and to identify life history traits that correlate with either evolutionary trajectory. Location: The Baltic Sea, the North Sea and their transition zone. Methods: We accumulated mitochondrial cytochrome oxidase subunit 1 sequence data and data on the distribution, salinity tolerance and life history for 28 species belonging to the Cnidaria, Crustacea, Echinodermata, Mollusca, Polychaeta and Gastrotricha, including seven non-native species. We calculated measures of genetic diversity and differentiation across the environmental gradient, coalescent times and migration rates between North and Baltic Sea populations, and analysed correlations between genetic and life history data. Results: The majority of investigated species is either genetically differentiated and/or is adapted to the lower salinity conditions of the Baltic Sea. Moreover, the species exhibiting population structure have a range of patterns of genetic diversity in comparison to the North Sea, from lower in the Baltic Sea to higher in the Baltic Sea, or equally diverse in North and Baltic Sea. Main conclusions: Our results indicate that the Baltic Sea should be considered a diversification hotspot: The diversity of genetic patterns points towards independent trajectories in the Baltic compared to the North Sea. At the same time, we found limited evidence for the traditional scenario of the Baltic Sea as a population sink with lower diversity and strong gene flow. The North Sea - Baltic Sea region provides a unique setting to study evolutionary adaptation during colonization processes at different stages by jointly considering native and non-native species.

Analysis of genetic diversity of Furcellaria lumbricalis (Gigartinales, Rhodophyta) in the Baltic Sea by RAPD-PCR technique

Phycologia ◽  
2000 ◽  
Vol 39 (2) ◽  
pp. 109-117 ◽  
Author(s):  
Simonas Valatka ◽  
Anita Mäkinen ◽  
Tapani Yli-Mattila
Keyword(s):  
Genetic Diversity ◽  
Baltic Sea ◽  
The Baltic Sea ◽  
Rapd Pcr ◽  
Furcellaria Lumbricalis ◽  
The Baltic

scholarly journals Species identification based on a semi-diagnostic marker: Evaluation of a simple conchological test for distinguishing blue mussels Mytilus edulis L. and M. trossulus Gould

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0249587
Author(s):  
Vadim Khaitov ◽  
Julia Marchenko ◽  
Marina Katolikova ◽  
Risto Väinölä ◽  
Sarah E. Kingston ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Mytilus Edulis ◽  
Species Identification ◽  
Barents Sea ◽  
White Sea ◽  
The Arctic ◽  
The White Sea ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
The Baltic

Cryptic and hybridizing species may lack diagnostic taxonomic characters leaving researchers with semi-diagnostic ones. Identification based on such characters is probabilistic, the probability of correct identification depending on the species composition in a mixed population. Here we test the possibilities of applying a semi-diagnostic conchological character for distinguishing two cryptic species of blue mussels, Mytilus edulis and M. trossulus. These ecologically, stratigraphically and economically important molluscs co-occur and hybridize in many areas of the North Atlantic and the neighboring Arctic. Any cues for distinguishing them in sympatry without genotyping would save much research effort. Recently these species have been shown to statistically differ in the White Sea, where a simple character of the shell was used to distinguish two mussel morphotypes. In this paper, we analyzed the associations between morphotypes and species-specific genotypes based on an abundant material from the waters of the Kola Peninsula (White Sea, Barents Sea) and a more limited material from Norway, the Baltic Sea, Scotland and the Gulf of Maine. The performance of the “morphotype test” for species identification was formally evaluated using approaches from evidence-based medicine. Interspecific differences in the morphotype frequencies were ubiquitous and unidirectional, but their scale varied geographically (from 75% in the White Sea to 15% in the Baltic Sea). In addition, salinity-related variation of this character within M. edulis was revealed in the Arctic Barents Sea. For every studied region, we established relationships between the proportions of the morphotypes in the populations as well as between the proportions of the morphotypes in samples and the probabilities of mussels of different morphotypes being M. trossulus and M. edulis. We provide recommendations for the application of the morphotype test to mussels from unstudied contact zones and note that they may apply equally well to other taxa identified by semi-diagnostic traits.

scholarly journals Chemical and Genetic Diversity of Nodularia spumigena from the Baltic Sea

Marine Drugs ◽  
2016 ◽  
Vol 14 (11) ◽  
pp. 209 ◽  
Author(s):  
Hanna Mazur-Marzec ◽  
Mireia Bertos-Fortis ◽  
Anna Toruńska-Sitarz ◽  
Anna Fidor ◽  
Catherine Legrand
Keyword(s):  
Genetic Diversity ◽  
Baltic Sea ◽  
The Baltic Sea ◽  
Nodularia Spumigena ◽  
The Baltic

Temporal and spatial sedimentation rate variabilities in the eastern Gotland Basin, the Baltic Sea

Boreas ◽  
2002 ◽  
Vol 31 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Christian Christiansen ◽  
Helmar Kunzendorf ◽  
Kay-Christian Emeis ◽  
Rudolf Endler ◽  
Ulrich Struck ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Sedimentation Rate ◽  
The Baltic Sea ◽  
Gotland Basin ◽  
Temporal And Spatial ◽  
The Baltic

Russian Oil: Production and Exports

2003 ◽  
pp. 136-146
Author(s):  
K. Liuhto
Keyword(s):  
Baltic Sea ◽  
Statistical Data ◽  
Oil Production ◽  
The Baltic Sea ◽  
North West ◽  
The North ◽  
Oil Transportation ◽  
Sea Ports ◽  
The Baltic

Statistical data on reserves, production and exports of Russian oil are provided in the article. The author pays special attention to the expansion of opportunities of sea oil transportation by construction of new oil terminals in the North-West of the country and first of all the largest terminal in Murmansk. In his opinion, one of the main problems in this sphere is prevention of ecological accidents in the process of oil transportation through the Baltic sea ports.

Paleoecological study of bottom sediments of the lake Goluboye (Karelian Isthmus) according to the results of diatom analysis

2019 ◽  
pp. 265-269
Author(s):  
Angelina E. Shatalova ◽  
Uriy A. Kublitsky ◽  
Dmitry A. Subetto ◽  
Anna V. Ludikova ◽  
Alar Rosentau ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Bottom Sediments ◽  
Modern Science ◽  
Karelian Isthmus ◽  
The Baltic Sea ◽  
Diatom Analysis ◽  
North West ◽  
The North ◽  
Important Direction ◽  
The Baltic

The study of paleogeography of lakes is an actual and important direction in modern science. As part of the study of lakes in the North-West of the Karelian Isthmus, this analysis will establish the dynamics of salinity of objects, which will allow to reconstruct changes in the level of the Baltic Sea in the Holocene.

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)

2008 ◽  
Vol 37 (4) ◽  
Author(s):  
Małgorzata Leśniewska ◽  
Małgorzata Witak
Keyword(s):  
Baltic Sea ◽  
The South ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Southern Baltic Sea ◽  
Gulf Of Gdansk ◽  
Southern Baltic ◽  
The Baltic ◽  
Palaeoenvironmental Changes

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)The palaeoenvironmental changes of the south-western part of the Gulf of Gdańsk during the last 8,000 years, with reference to the stages of the Baltic Sea, were reconstructed. Diatom analyses of two cores taken from the shallower and deeper parts of the basin enabled the conclusion to be drawn that the microflora studied developed in the three Baltic phases: Mastogloia, Littorina and Post-Littorina. Moreover, the so-called anthropogenic assemblage was observed in subbottom sediments of the study area.

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