Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Imprimer: 0018-8166
ISSN En ligne: 1943-5991

Volumes:
Volume 56, 2020 Volume 55, 2019 Volume 54, 2018 Volume 53, 2017 Volume 52, 2016 Volume 51, 2015 Volume 50, 2014 Volume 49, 2013 Volume 48, 2012 Volume 47, 2011 Volume 46, 2010 Volume 45, 2009 Volume 44, 2008 Volume 43, 2007 Volume 42, 2006 Volume 41, 2005 Volume 40, 2004 Volume 39, 2003 Volume 38, 2002 Volume 37, 2001 Volume 36, 2000 Volume 35, 1999 Volume 34, 1998

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v50.i3.60
pages 55-63

Resistance of Gammarids Pontogammarus robustoides and Chaetogammarus ischnus (Crustacea: Amphipoda) to Elevation of Temperature of the Aquatic Medium

V. D. Romanenko
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
Yu. G. Krot
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
T. I. Lekontseva
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
A. B. Podrugina
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine

RÉSUMÉ

Temperature resistance of the laboratory and natural populations of Pontogammarus robustoides (Sars, 1894) and Chaetogammarus ischnus (Stebbing, 1898) to increased temperatures of the aquatic medium was studied. Thermostability degree was estimated at static and dynamic impact. In both modes P. robustoides was revealed to be more resistant than Ch. Ischnus. Peculiarities of the gammarids' thermostability changes depending on preceding temperature were shown. During prolong adaptation to the narrow range of elevated temperatures (19−25°C) thermostability of Ch. Ischnus increased; adaptation abilities of P. robustoides decreased at the static impact of extreme temperatures. Intraspecific differentiation of individuals by thermostability degree and adaptation ability was shown.