scholarly journals Distinct colonization waves underlie the diversification of the freshwater sculpin (Cottus gobio ) in the Central European Alpine region

2018 ◽  
Vol 31 (9) ◽  
pp. 1254-1267 ◽  
Author(s):  
Kay Lucek ◽  
Irene Keller ◽  
Arne W. Nolte ◽  
Ole Seehausen

Antiquity ◽  
2014 ◽  
Vol 88 (340) ◽  
pp. 456-469 ◽  
Author(s):  
Francesco Menotti ◽  
Benjamin Jennings ◽  
Hartmut Gollnisch-Moos

The lake-dwellings of the Circum-Alpine region have long been a rich source of detailed information about daily life in Bronze Age Europe, but their location made them vulnerable to changes in climate and lake level. At several Late Bronze Age examples, skulls of children were found at the edge of the lake settlement, close to the encircling palisade. Several of the children had suffered violent deaths, through blows to the head from axes or blunt instruments. They do not appear to have been human sacrifices, but the skulls may nonetheless have been offerings to the gods by communities faced with the threat of environmental change.



2005 ◽  
Vol 272 (1579) ◽  
pp. 2379-2387 ◽  
Author(s):  
Arne W Nolte ◽  
Jörg Freyhof ◽  
Kathryn C Stemshorn ◽  
Diethard Tautz

Fish abundance surveys in the Rhine system have shown in the past two decades that there is a rapid upriver invasion of a freshwater sculpin of the genus Cottus . These fish are found in habitats that are atypical for the known species Cottus gobio , which is confined to small cold streams within the Rhine drainage. Phylogeographic analysis based on mitochondrial haplotypes and diagnostic single nucleotide polymorphisms indicates that the invasive sculpins are hybrids between two old lineages from the River Scheldt drainage and the River Rhine drainage, although it is morphologically more similar to the Scheldt sculpins. Most importantly, however, the invasive population possesses a unique ecological potential that does not occur in either of the source populations from the Rhine or the Scheldt, which allows the colonization of new habitats that have previously been free of sculpins. Microsatellite analysis shows that the new lineage is genetically intermediate between the old lineages and that it forms a distinct genetic group across its whole expansion range. We conclude that hybridization between long separated groups has lead to the fast emergence of a new, adaptationally distinct sculpin lineage.



2000 ◽  
Vol 9 (6) ◽  
pp. 709-722 ◽  
Author(s):  
C. C. Englbrecht ◽  
J. Freyhof ◽  
A. Nolte ◽  
K. Rassmann ◽  
U. Schliewen ◽  
...  


2010 ◽  
Vol 29 ◽  
pp. 55
Author(s):  
Gunn E. Frilund ◽  
Jarl Koksvik ◽  
Anton Rikstad ◽  
Hans M. Berger

<p><span style="font-size: small;"><span style="font-family: Times New Roman;">Frilund GE, Koksvik J, Rikstad A and Berger HM. 20092009. Cottus gobio (Linnaeus, 1758), a new fish-species in Nord-Trøndelag County, Norway. Fauna Norvegica 29: 55-60.</span></span></p><p class="MsoNormal" style="margin: 0pt;"><span style="font-size: small; font-family: Times New Roman;"> </span></p><p class="MsoNormal" style="margin: 0pt;"><span style="font-size: small; font-family: Times New Roman;">Cottus gobio, a freshwater sculpin, was discovered by electrical fishing in rivers draining to Murusjøen in Lierne, Nord-Trøndelag County in the middle of Norway. Until now, this sculpin has only been found in a few river systems in the south-eastern and north-eastern parts of Norway. Species specific characters (glands and fins) were used to distinguish C. gobio from the close relative C. poecilopus. The sculpin dominated the catches in all the investigated rivers. In August 2008 in the River Fiskløysa, a total of 194 specimens were collected. Their length varied from 37 mm to 105 mm, indicating the presence of both juvenile (age 0) and adult individuals. In September 2008, qualitative sampling was conducted in another part of Fiskløysa and in the rivers Kveelva and Murubekken. In River Fiskløysa, the species was not registered above a presumably impassable waterfall about 1.6 km from Lake Murusjøen. In River Kveelva sculpins were caught below a nine meters moderate waterfall, close to the outlet of Lake Kvesjøen, but no sculpins were registered above the waterfall. This indicates that the waterfall is a possible barrier for further upstream dispersal into Lake Kvesjøen. Sculpins were also registered in River Murubekken.The paper discusses possibilities for C. gobio being spread naturally or artificially into the river systems in Lierne. It is predicted that the dispersal most likely has been natural from populations in Sweden, as there are no distinct barriers preventing the sculpin from spreading westwards. The time-period of the dispersal, however, is still unknown, and the sculpin may still be expanding its home range in these water systems.</span></p><p> </p>



1998 ◽  
Vol 76 (5) ◽  
pp. 876-885 ◽  
Author(s):  
Michael Riffel ◽  
Arnd Schreiber

The morphological differentiation between four population collectives of the Central European sculpin Cottus gobio from southwestern Germany and adjacent France (the contact region of the Rhine, Danube, and Rhône drainage basins) was evaluated using multivariate analysis of 34 morphometric and 3 meristic characters. Body shape separated Neckarian and Danubian sculpins, Rhenish stocks taking a somewhat intermediate position. These morphological differences between populations from various drainage basins were slighter than the deeper allozyme differentiation observed in a previous study. However, both allozymes and morphometry indicated the same population groupings. It is concluded that C. gobio displays an accelerated rate of allozyme evolution, or that stabilizing selection conserves its phenotype despite ongoing evolution at the protein level. The morphological data do not support the distinction of species in the area of the Rhine/Danube watershed.



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