The huge mussels, reaching 22 to 26 cms. in size which appeared along the bank of the Danube in Rousse about a fortnight ago, have been proved to be an invasive mussel species from China, Radio Varna reports.
Biodiversity and ecosystems experts from the Bulgarian Academy of Sciences say they are Chinese pond mussels. They were first spotted in the Danube in 2005 but since then, the population of the species has exploded.
The Chinese pond mussels are not a direct threat to the other animal species but they do attack their direct Bulgarian rivals – two species of pond mussels – by reducing their feed resources. The invasion was first noticed in the first half of August when the temperature of the water rose.
On Sunday there will be significant clouds in the morning over most of the Danube Plain, but around midday the clouds will disperse and the weather will be predominantly sunny. Over the Eastern parts of the country there will be clouds, with light..
In connection with the incident involving a drone intercepted in the vicinity of Sofia Airport last night, deputy Prime Minister and Minister of Transport and Communications Grozdan Karadjov pointed to the need of anti-drone security systems within..
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It is important to the newly-elected government what kind of budget it is going to propose and uphold, and if it garners support in parliament, how it..
On Saturday , the lowest temperatures will be between minus 8 and minus 3°C; in Sofia - around minus 8°C. During the day, sunny..
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