Μύδια του Γλυκού Νερού: Nέα ανασκόπηση / Freshwater mussels of Europe: New review

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Μύδια του Γλυκού Νερού: Nέα ανασκόπηση / Freshwater mussels of Europe: New review



Mudia by Glicu Nehru!
A new scientific paper provides the first look at the human condition in Europe

One of the most important components of life in streams and rivers is freshwater fish, a variety of aquatic species that provide important ecological services. These molds are like "zoontan filters" for water; one water can be used up to 40 liters of water per day . Τα μύδια has a special relationship with τα πύχος - as larvae they live on πύχος and thus mate. BIOTOP where many and different life forms live. Many freshwater species are extremely long-lived; They live more than 100 years.

However, few of us have any idea that this will be due to the very large freshwater additions found on the helipad in many parts of Europe.

A new publication in the scientific journal "Biological Reviews" (IF 9.67) showed that only 16 species have been recorded in Europe . Unfortunately, there is a lot of overhead and troubleshooting for many of these types. 49 researchers from 26 countries and several academic institutions completed this study. Our country is one of the most famous countries in terms of writing this genre. we do not know their understanding and situation well. Some people have disappeared from the areas where they collected data ten years ago. Some are so different that they have to be new to protect them.

The search preview was organized by a group in Portugal and Germany, and a great effort was made to search archives of books and mysteries all over Europe and in our country. In Greece, considerable assistance was received from the Zoological Museum of Athens, University of Athens (βοήθησε ο Αναστάσιος έγάκις) and "Ομέας Εσωτερικών Υδάτων του Ονσιτουτου Ταλασσιων Βιολογικόν Πόρων" and "Εσωτερικών Υδάτων του ΕΛΚΕΘΕ". ο Σταμάτης Ζόγκαρης and ο Ιωάνης Καραύζας ELKETHE continue the double search with the main researchers of the Balkans article. Portuguese experts, Dr. Manuel Lopez-Lima and Dr. Excellent collaboration with Ronaldo Sousa and research in this field in Greece in 2016.

Look here to find a job in Greece in 2014.

For more information, you can get the scientific article here.
Common health assessment of water stress in Europe.
A freshwater mussel

Reference to Genos Potamida in Mesogio.
Potamid 2016

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First survey of freshwater mussel stocks in 26 European countries
Status quo in European mussels

Mussels are natural sewage treatment plants and are therefore just as important as bees. Unfortunately, they are also endangered. Most mussel stocks in the world are declining and some species are in danger of extinction. For this reason, scientists from 26 European countries have conducted the first comprehensive study of the status quo of freshwater mussel species in Europe and can now make recommendations for the future conservation of this species.

It may not always be obvious due to their discreet lifestyle, but mussels are among the world's most endangered species . These mussels have an interesting life cycle as they have a parasitic stage in fish where the mussel larvae mate and develop into juveniles. . Until now, little was known about the status quo of the mussel fauna, as there is no information on the stock sizes of this underwater organism. Different research methods used by different countries have exacerbated the problem. A catalog of 16 species of freshwater mussels found in Europe was first published in the journal Biological Reviews. The project was coordinated by the Portuguese Interdisciplinary Center for Marine and Environmental Research (CIIMAR) and the Technical University of Munich (TUM).

The main role of water bodies

The three lead authors of the study, Manuel López-Lima and Ronaldo Souza from CIMAR and Professor Jürgen Geist from TUM, describe the importance of mussels for aquatic ecosystems; they make up about 90 percent of the biomass in the watershed bed. In addition, mussels filter water and therefore have a strong effect on water quality. "Because one mussel filters up to 40 liters of water per day," the authors state, "we humans also benefit from the ecosystem services provided by mussels." When hard-shelled animals occupy a clear body of water, more invertebrates tend to join them. Because they play an important role in the aquatic environment, the disappearance of these small natural treatment facilities in rivers and lakes will have a serious impact on the aquatic environment.

Real estate directory

But what do freshwater mussels, some of which live for over a century, need to survive? A research network of scientists from 26 countries gathered information about the habitat needs of European mussels and set out to answer the following questions:

·         Where do species come from?
·         What is the current stock?
·         How are species related to each other?
·         What are their favorite places to live?
·         What are the greatest threats to their survival?

One of the results of the research in Europe is that the gap between North and South is widening: Northern Europe has fewer species, as in Scandinavia, but larger populations. In contrast, southern Europe has more species, but some of them are found in only a small part of the waters. This may be because they specialize on one type of fish, and if that species breeds only in the Iberian Peninsula, the dependent mussel can only live near it. In addition, mountain ranges such as the Alps and the Pyrenees act as a geographical barrier. "If the mussel population dies in one country in the South, it could represent half of the world's population," these scientists explain.

What habitats do mussels prefer?

The spread of several mussel species in Europe and the emergence of different species, ice ages and the periods between them can be attributed, on the one hand, to their fish hosts and the invasion of new habitats. On the other hand. In addition, scientists have found that less fastidious mussel species can spread more successfully because they can live in different water bodies and adapt quickly to changes in water quality. Similarly, some species prefer warmer, calmer waters, while other mussel species are more hardy and can live in cold streams and rivers as well as lakes.

What are the threats in the European media?

The authors also summarize the main threats to the species in their report.

·         dams, dams and dams
·         Pearl fishing (for some species)
·         Pollution and excessive fertilization
·         Loss of host fish
·         Invasive species
·        Water abstraction and climate change
·        Other stress factors are not yet known


To ensure the long-term conservation of freshwater mussels for aquatic ecosystems and their functions, the authors recommend the development of detailed science-based plans with specific objectives. Targeted protection should be provided for evolutionarily important populations, whose stocks have already declined by 90%, water bodies with high mussel species diversity, and healthy stocks of mussel habitats. " Mussels are highly dependent on fish stocks and are in decline, and fish stocks should be given special attention, " the authors explain, "even though some of these fish species have no particular economic value."

In Greece, the Zoological Museum of the University of Athens, directed by Anastasios Legakis, and the Inland Waters Unit of the HCMR of IMBRIW worked on this paper. HCMR's Stamatis Zogaris and Ioannis Karauzas continue to work with lead authors on the Balkan Wildlife Research Review Paper. In 2016, it is planned to conduct field studies in Greece.

For an overview of research in Greece, see here:

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Freshwater mussels in Europe

Re-recording of the rare genus Potamida in the inland waters of the Mediterranean Sea.



Freshwater mussel species featured in recent biological journals.
Freshwater mussel species featured in recent biological journals.


Pearl mussel species presented in recent biological journals.

Lake Yliki is a very important habitat for freshwater mussels near Athens. Λιμνη Υλίκη, Βοιωτία - a very important biosphere for freshwater conservation in Athens.
A species of mussel was found in the artificial lake of Mount Parnita near Athens. Eidos mydiou του γλόκύ su τηκτηνή in the reservoir, Parnηtha (Photo: D. Κουτσογιαννόπουλος).

The Pinios River in Thessaly is an important area for freshwater mussels. O Potamos Peneios Thessaly has numerous populations of freshwater mussels both in the clear parts and in the upper part.





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