Vodní měkkýši Novohradky

Abstract

This paper presents results of a malacological survey of the Novohradka River, small river in Pardubice Region (Czech Republic, Eastern Bohemia, tributary of the Chrudimka River). Fifteen species of aquatic molluscs (7 gastropods, 8 bivalves) were found at 13 sites during research realised in 2015 and 2017. The research was focused on the population of the endangered bivalve Unio crassus and its recent occurrence was confirmed at 4 sites. Population density is low. This population is connected with more numerous population in the Chrudimka River.

Full text

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Úvod a historie průzkumu
    
  -

 
      

-


  Unio
crassus
Pisidium moitessierianum-
  
        
     
Unio crassus
 -


Charakteristika území
    
   -
  
       


        -
-
  


Metodika a materiál
       -

   -
 -
   

      
   
   -
    
 
-
       
Pisidium 
-

   


Přehled zkoumaných lokalit

   

  
-



Vodní měkkýši Novohradky
Aquatic molluscs of the Novohradka River

Agentura ochrany přírody a krajiny ČR, regionální pracoviště – Správa chráněné krajinné oblasti Kokořínsko – Máchův kraj,
Česká 149, CZ-276 01, Mělník, Česká republika, e-mail: lubos.beran@nature.cz
-



  
Unio crassus


Key wordsUnio crassus

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1      -

2 

3     

4 

5 -
  -

6 
  

7 

8  

9 -

10 

11 

12 -

13 -

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Žejbro
Novohradka
Ležák
9
8
7
6
5
4
3
2
1
13
12
11
10
C
hrudimka
0 1 2 km
±
Krounk
a
TTTTT
Obr. 1.
Fig. 1.


Obr. 2.
Fig. 2.
Výsledky a diskuse
  
      
   
 -
       
-
  Unio
crassus-
  
  -
  



   -
    
-

 
    
Radix ampla a Pisi-
dium supinum
  
Potamopyrgus antipodarum  
-

       Unio
crassus-
-
Pisidium moitessierianum
  
  
P. antipodarum   
   
 
 Radix ampla   




-
  

  Unio crassus
 -
        
  
-



  -
       -


    Unio crassus a
   



   
    
Unio crassus      
   -
-
Ondatra zibethicus 
  
Myocastor corpus

Poděkování
 

Literatura

Unio crassus  
       
Unio crassus -

-
 
-
     
      

-

 -


  
  -

   

   
-
   


Obr. 3.
Fig. 3.


Tabulka 1.

Table 1.
   
8    
Potamopyrgus antipodarum       
Bithynia tentaculata           
Acroloxus lacustris  
Galba truncatula        
Radix ampla        
Radix balthica      
Gyraulus albus        
Ancylus uviatilis               
Unio crassus        
Anodonta anatina            
Sphaerium corneum          
Pisidium casertanum       
Pisidium henslowanum      
Pisidium moitessierianum  
Pisidium nitidum       
Pisidium subtruncatum           
Pisidium supinum       
  8  8   