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Příspěvek k poznání vodních měkkýšů Jihlavy [A contribution to the knowledge of aquatic molluscs of the Jihlava River]

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Luboš Beran at Nature Conservation Agency
Luboš Beran
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Abstract

This paper presents results of a malacological survey of the middle and upper section of the Jihlava River, a tributary of the Dyje River (Czech Republic). Twenty-three species of aquatic molluscs (13 gastropods, 10 bivalves) were found at 35 sites during research realised mostly in 2017 and 2020. In comparison with the lower section of the Jihlava River, a significantly lower proportion of bivalves of the family Unionidae was found in the middle and upper sections.
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Úvod a historie průzkumu
-



  

Unio cras-
sus (  -
 

Metodika a materiál
       

  -


-

  -



Pisidium-
   
      

     

Charakteristika území
     
  

   
 
 

Přehled zkoumaných lokalit

   
 
-

1    

2 

3 -

4  -

5      -

6 -

7   



Příspěvek k poznání vodních měkkýšů Jihlavy
A contribution to the knowledge of aquatic molluscs of the Jihlava River

1Agentura ochrany přírody a krajiny ČR, regionální pracoviště – Správa chráněné krajinné oblasti Kokořínsko – Máchův kraj,
Česká 149, CZ-276 01 Mělník, e-mail: lubos.beran@nature.cz, https://orcid.org/0000-0002-5851-6048
     



-


 

Key wordsUnio crassus

8   

9      

10   

11 

12 
a)b)

13 

14   -

15     

16 

17 

18 -

19 

20 

21 -

22 

23 

24-

25-

26    

27

28

29
a)b)
30

31-

32      

33      -
  

34

35

Výsledky a diskuse
       
    
     
-

Potamopyrgus antipodarumBithynia tentaculata Unio
crassus U. pictorum-
Ancylus
uviatilis-
Acroloxus lacustrisAnodonta anatinaSphae-
rium corneumPisidium henslowanum P. subtruncatum
Obr. 1.    -

Fig. 1.      -


Valva-
ta piscinalis Radix balthicaR. labiata Physa acuta Unio
crassus U. pictorum Pisidium personatum 
  
     
Unio crassus  


    

  

   
Valvata piscinalis    
-


  Pisidium su-
pinum  
      
Potamopyrgus antipodarumPhysa acuta
     
      
   
   Unio crassus,
U. pictorum, U. tumidus, Anodonta anatina
Anodonta cygnea   
-
A. anatina
-
-
-



  
   -

Poděkování
         

Literatura

-
  


 
      -

     

 &    -
-
     
   &  
 


      
&         
         
 
         

Obr. 2.Unio crassus
Fig. 2.    


Obr. 3.
Fig. 3.
Obr. 4.
Fig. 4.

Tabulka 1.

Table 1.                 

  
         9      
Potamopyrgus antipodarum        
Bithynia tentaculata       
Valvata piscinalis 
Acroloxus lacustris  
Galba truncatula   
Radix auricularia       
Radix balthica  
Radix labiata 
Lymnaea stagnalis   
Physa acuta   
Anisus vortex   
Gyraulus albus   
Ancylus uviatilis              

Unio crassus   
Unio pictorum  
Anodonta anatina         
Sphaerium corneum        
Pisidium casertanum 
Pisidium henslowanum   
Pisidium nitidum    
Pisidium personatum  
Pisidium subtruncatum    
Pisidium supinum     
 9

Tabulka 1.
Table 1.
 
                    
Potamopyrgus antipodarum 9
Bithynia tentaculata
Valvata piscinalis
Acroloxus lacustris        
Galba truncatula  
Radix auricularia 9
Radix balthica
Radix labiata  
Lymnaea stagnalis  
Physa acuta
Anisus vortex  
Gyraulus albus  
Ancylus uviatilis             

Unio crassus
Unio pictorum
Anodonta anatina               
Sphaerium corneum      
Pisidium casertanum     
Pisidium henslowanum       
Pisidium nitidum    9
Pisidium personatum
Pisidium subtruncatum   
Pisidium supinum
 
Měkkýší údolí Vltavy (Čechy) Molluscs of the Vltava River valley (Bohemia)
Article
Full-text available
  • Apr 2014
The recent mollusc assemblages of the Vltava River, the longest river in the Czech Republic (430 km), and its valley were studied (South and Central Bohemia). Altogether, 162 species of terrestrial and freshwater molluscs representing 65% of the total Czech malacofauna, were recorded at 532 sites studied between 1940 and 2013. Considering high species richness and diversity of mollusc fauna, the Vltava River valley ranks among the malacologically richest areas in the Czech Republic despite (1) the strong migration barrier of the nine dams on the upper and middle river stretches, (2) the long-term human influence in a whole river valley during the Holocene and, (3) the intensive agriculture in the lower part of the river floodplain. The river phenomenon, partly developed in the upper river stretch and fully developed in the middle part of the river, is the leading cause of such remarkable species richness.
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Vodní měkkýši Vysočiny [Freshwater molluscs of Vysočina Region (Czech Republic)]
Article
Full-text available
  • Apr 2017
This paper summarizes data about the distribution of freshwater molluscs in the Vysočina Region (6,800 km²). The region is one of the 14 regions of the Czech Republic, situated in its central part. The major part of this region consists of Českomoravská vrchovina (Bohemian-Moravian Highlands) with average elevation about 500 m a. s. l. Data about freshwater molluscs have been obtained by author’s field research since 1993 and from many published and unpublished papers, private collections, and collections in museums dating from 1850. Altogether, data about the occurrence of 49 species of freshwater molluscs (27 gastropods, 22 bivalves) were obtained. This number constitutes 62% of all aquatic mollusc species found in the Czech Republic. Data about the occurrence of individual species were used for the construction of distributional maps of records for three time periods (1851–1950, 1951–2000, 2001–2016). The major part of the data has originated for the last period. This clearly demonstrates a significant increase in the research intensity after 2000. The most common species, i.e. recorded at least in 40 mapping cells out of 72 covering the area to the Vysočina Region, were Galba truncatula, Radix auricularia, R. labiata, Lymnaea stagnalis, Gyraulus albus, Ancylus fluviatilis, Anodonta anatina, Pisidium casertanum, and P. subtruncatum. In contrast, Viviparus viviparus, Potamopyrgus antipodarum, Stagnicola corvus, Radix ampla, R. balthica, Planorbis planorbis, Gyraulus acronicus, Ferrissia fragilis, Unio tumidus, Pseudanodonta complanata, Sinanodonta woodiana, Pisidium amnicum, P. tenuilineatum, and Dreissena polymorpha have been found in less than five mapping cells and belong to rare species of this region. Except 29 common and widespread species, four species (Bythinella austriaca, Physa fontinalis, Pisidium milium, and P. supinum) belonging in the Red List of the Molluscs of the Czech Republic were recorded. Other six species are classified as Vulnerable (Radix ampla, Gyraulus acronicus, Segmentina nitida, Unio tumidus, Anodonta cygnea, and Pisidium hibernicum), three as Endangered (Unio crassus, Pseudanodonta complanata, and Pisidium amnicum), and two as Critically Endangered (Margaritifera margaritifera and Pisidium tenuilineatum).
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Vodní měkkýši Vysočiny
Article
Full-text available
  • Apr 2017
This paper summarizes data about the distribution of freshwater molluscs in the Vysočina Region (6,800 km2). The region is one of the 14 regions of the Czech Republic, situated in its central part. The major part of this region consists of Českomoravská vrchovina (Bohemian-Moravian Highlands) with average elevation about 500 m a. s. l. Data about freshwater molluscs have been obtained by author’s field research since 1993 and from many published and unpublished papers, private collections, and collections in museums dating from 1850. Altogether, data about the occurrence of 49 species of freshwater molluscs (27 gastropods, 22 bivalves) were obtained. This number constitutes 62% of all aquatic mollusc species found in the Czech Republic. Data about the occurrence of individual species were used for the construction of distributional maps of records for three time periods (1851–1950, 1951–2000, 2001–2016). The major part of the data has originated for the last period. This clearly demonstrates a significant increase in the research intensity after 2000. The most common species, i.e. recorded at least in 40 mapping cells out of 72 covering the area to the Vysočina Region, were Galba truncatula, Radix auricularia, R. labiata, Lymnaea stagnalis, Gyraulus albus, Ancylus fluviatilis, Anodonta anatina, Pisidium casertanum, and P. subtruncatum. In contrast, Viviparus viviparus, Potamopyrgus antipodarum, Stagnicola corvus, Radix ampla, R. balthica, Planorbis planorbis, Gyraulus acronicus, Ferrissia fragilis, Unio tumidus, Pseudanodonta complanata, Sinanodonta woodiana, Pisidium amnicum, P. tenuilineatum, and Dreissena polymorpha have been found in less than five mapping cells and belong to rare species of this region. Except 29 common and widespread species, four species (Bythinella austriaca, Physa fontinalis, Pisidium milium, and P. supinum) belonging in the Red List of the Molluscs of the Czech Republic were recorded. Other six species are classified as Vulnerable (Radix ampla, Gyraulus acronicus, Segmentina nitida, Unio tumidus, Anodonta cygnea, and Pisidium hibernicum), three as Endangered (Unio crassus, Pseudanodonta complanata, and Pisidium amnicum), and two as Critically Endangered (Margaritifera margaritifera and Pisidium tenuilineatum).
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Vodní měkkýši Oslavy
Article
Full-text available
  • Feb 2019
This paper presents results of a malacological survey of the Oslava River, a tributary of the Jihlava River (Czech Republic, Southeastern Moravia). Sixteen species of aquatic molluscs (8 gastropods, 8 bivalves) were found at 14 sites during the research conducted from 2010 to 2018. The research was focused on the endangered bivalve Unio crassus. Its population was confirmed at the lower river section and is connected with the population in the Jihlava River.
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Check-list and distribution maps of the molluscs of the Czech and Slovak Republics
Data
Full-text available
  • Aug 2016
The current version of the check-list follows Horsák et al. (2013) with up-to-date modifications supplemented with a reference. Distribution map for each species was constructed based on published data and our knowledge based on unpublished records. So far 251 species of molluscs, including 223 species of gastropods (51 aquatic and 172 terrestrial) and 28 species of bivalves, have been found outdoors in the Czech Republic. The fauna of Slovakia comprises 249 species, including 220 gastropods (51 aquatic and 169 terrestrial) and 29 bivalves.
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Mollusca (měkkýši). -In: Červený seznam ohrožených druhů České republiky. Bezobratlí. Red list of threatened species in the Czech Republic. Invertebrates, Hejda R
  • Jan 2017
  • 71-76
  • L Beran
  • L Juřičková
  • M Horsák
Beran L., Juřičková L. & Horsák M., 2017: Mollusca (měkkýši). -In: Červený seznam ohrožených druhů České republiky. Bezobratlí. Red list of threatened species in the Czech Republic. Invertebrates, Hejda R., Farkač J. & Chobot K. (eds), Agentura ochrany přírody a krajiny ČR, Příroda, Praha, 36: 71-76.