DRUŠTVO BIOLOGOV SLOVENIJE
Biological Society of Slovenia

 

 

Contents (Abstracts)

Volumes

11: 1 (1963)    40: 3-4 (1995)    42: 2 (1999)    43: 3 (2000)    44: 1-2 (2001)    45: 2 (2002)    46: 1 (2003)    47: 1 (2004)    47: 2 (2004)    48: 1 (2005)    48: 2 (2005)    49: 1 (2006)    49: 2 (2006)    50: 1 (2007)    50: 2 (2007)    51: 1 (2008)    51: 2 (2008)    52: 1 (2009)    52: 2 (2009)    53: 1 (2010)    53: 2 (2010)    54: 1 (2011)    54: 2 (2011)    55: 1 (2012)    55: 2 (2012)    56: 1 (2013)    56: 2 (2013)    57: 1 (2014)    57: 2 (2014)    58: 1 (2015)    58: 2 (2015)    59: 1 (2016)    59: 2 (2016)   

Contents: Volume 45, Nr. 2 (2002)



KASCHL Ulf Skender, ZIDAR Primož, ŠTRUS Jasna, STORCH Volker


Adaptive mutation: shall we survive bacterial genetic skills?


KRAŠOVEC Rok, JERMAN Igor

Abstract

The origin and dynamics of genetic variations is one of the key questions in the modern science that has still not come out with a final answer. Emerging concepts regarding genetic variation have always produced a great controversy because they hold a key to unlock a great mystery of evolution. With such a powerful motivation scientist working in the molecular biology, genetics and biochemistry gathered a vast amount of experimental data showing us that a genome is a dynamic, hierarchically organized and complex integrated system for storing and processing information. Dynamic balance between stability and mutability of DNA nucleotide sequences is essential for a proper functioning of the organism. Beside many DNA repairing proteins and DNA protective mechanisms organisms possess also biochemical systems capable of changing DNA information. One of the most controversial and at the same time the most informative one is a phenomenon called adaptive mutation. We shall review findings concerning the phenomenon of adaptive mutation in prokaryotes and point out an urgent need for the upgrade of the awkward neo-darvinistic view on the origin of the genetic variation.

Keywords

adaptive mutation, inducible mutagenesis, transposable elements, signal transduction network, neo-darvinism


Aquatic macrophytes of the mountain lake Krnsko jezero, Slovenia


URBANC BERČIČ Olga, GABERŠČIK Alenka, ŠIŠKO Miljan, BRANCELJ Anton

Abstract

The macrophyte vegetation in the mountain lake Krnsko jezero has been monitored since 1991. Five species of aquatic macrophytes, occupying different depths, were present in the lake. Changes in depth distribution were detected due to accelerated eutrophication caused by inputs of nutrients from the watershed. In the period between 1997 and 1998 repeated earthquakes additionally influenced the processes in the lake Krnsko jezero, by increased input of matter. The occasional phytoplankton blooms reduced water transparency and consequently disturbance to growth, development and distribution of anchored macrophytes occurred. In 1998 macrophytes spread down to 7.0 m, reaching the maximum at 5.8 kg DW m -2 at 2 m depth. The total primary production in the lake was estimated at 4991 kg organic matter per year out of which Chara and Potamogeton species presented 95.5 % and 0.6 %, respectively.

Keywords

aquatic macrophytes, chlorophyll a , lake Krnsko jezero, mountain lake, nutrients, organic matter, primary production


Slugs (Gastropoda: Pulmonata: Milacidae, Limacidae, Boettgerillidae, Agriolimacidae, Arionidae) of Slovenia


VAUPOTIČ Marjan, VELKOVRH France

Abstract

Slugs are among the less investigated gastropods in Slovenia. The study of approximatelly 600 samples of slugs (Milacidae, Limacidae, Boettgerillidae, Agriolimacidae and Arionidae) from three collections and the analysis of data from the literature gave a total of 27 species for the territory of Slovenia. For six species this is the first record for Slovenia. Most slugs in Slovenia belong to the family Milacidae (8). A list of species with distribution maps in UTM grids (10 x 10 km) is given.

Keywords

snails (Gastropoda), slugs, fauna, distribution, Slovenia

 

© 2003, Društvo biologov Slovenije –
Journal of Biological Society of Slovenia

Zadnja sprememba:
15.3.2010