Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI

În partea de jos este prezentat rezumatul articolului selectat. Pentru revenire la cuprinsul ediţiei din care face parte acest articol, se accesează linkul din titlu. Pentru vizualizarea tuturor articolelor din arhivă la care este autor/coautor unul din autorii de mai jos, se accesează linkul din numele autorului.

 
       
         
    STUDIA BIOLOGIA - Ediţia nr.1 din 2010  
         
  Articol:   COMPARATIVE BIOMETRIC STUDY OF CRAYFISH POPULATIONS IN THE ANINA MOUNTAINS (SW ROMANIA) HYDROGRAPHIC BASINS.

Autori:  LUCIAN PÂRVULESCU.
 
       
         
  Rezumat:  

The paper presents data concerning the biometric aspects of two crayfish species from the rivers of the Anina Mts: the stone crayfish (Austropotamobius torrentium) and the noble crayfish (Astacus astacus). The populations of the two species are not evenly distributed within the three hydrographic basins of the investigated area: Bârzava, Caraş, and Nera. Thus, through the discriminant analysis of the measured parameters we were able to identify several parameters that proved to be highly related to the differentiation of the studied specimens into hydrographic basins; these specimens have been afterwards the subject of the ANOVA type analysis. The study revealed that, whereas the A. torrentium populations from the Caraş basin present high significantly differences in comparison to the populations analysed in the Nera basin, the A. astacus populations from the Caraş basin differ significantly from those of the Bârzava basin. As far as the morphometric differences between the two sexes are concerned, the most powerful and visible distinctions that have been registered for both species can be found at the level of chela, propodus length, dactylus length and width of chela. The maximum dimension of the A. torrentium males, as well as the average of these values, is very close to the female one, while for the A. astacus the differences between the sexes are much more significant.

 

Keywords: Anina Mountains, Astacus astacus, Austropotamobius torrentium, biometry, populations

 
         
     
         
         
      Revenire la pagina precedentă