Marine Biodiversity and Ecosystem Functioning
EU Network of Excellence

 
Main Menu

· Home
· Contacts
· Data Systems
· Documents
· FAQ
· Links
· MarBEF Open Archive
· Network Description
· Outreach
· Photo Gallery
· Quality Assurance
· Register of Resources
· Research Projects
· Rules and Guidelines
· Training
· Wiki
· Worldconference

 

Register of Resources (RoR)

 People  |  Datasets  |  Literature  |  Institutes  |  Projects 

[ report an error in this record ]basket (0): add | show Print this page

Ecophysological and genetic traits of the Baltic clam Macoma balthica in the Baltic: differences between populations in the Gdansk Bay due to acclimatization or genetic adaptation?
Hummel, H.; Sokolowski, A.; Bogaards, R.; Wolowicz, M. (2000). Ecophysological and genetic traits of the Baltic clam Macoma balthica in the Baltic: differences between populations in the Gdansk Bay due to acclimatization or genetic adaptation? Int. Rev. Hydrobiol. 85(5-6): 621-637
In: International Review of Hydrobiology. Wiley: Weinheim. ISSN 1434-2944; e-ISSN 1522-2632
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal

Authors  Top 
  • Hummel, H., more
  • Sokolowski, A., more
  • Bogaards, R.
  • Wolowicz, M., more

Abstract
    Normal and irregular blunt clam-shells were found. Blunt shells increased with depth, because ofincreasing anoxia. Minimal weight-indices and reproductive stages were found at 40 m depth (near thermo-haline stratification) probably due to spawning just before sampling. Clams from shallower stationswere more ripe and heavier due to higher temperatures and re-development than at deeper stations sincetemperatures were still below threshold levels for spawning (10 °C). Respiration was at ambienttemperatures acclimated to standard rates. Consequently, clams from deeper stations (with lower ambienttemperatures) had 2 times higher respiration at the same test-temperature. Clams from the most shallowstation (Puck Lagoon 5 m) showed the worst performance due to adverse hydrodynamics (stagnatedwater, anoxia). Heterozygotes showed better performance than homozygotes (heterosis). In 1995 geneticdifferentiation was found (Idh was diagnostic): clams below 30 m resembled Atlantic populations; shallowstations formed a distinct group (Baltic race). In later years all populations were Atlantic, probablydue to inflow of North Sea water. Before 1996 ecophysiological differences between clams in the GdanskBay can possibly be related to genetic differentiation (adaptations of Atlantic vs. Baltic types), in lateryears differences were due to acclimation to ambient temperatures, salinity and oxygen levels.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors 


If any information here appears to be incorrect, please contact us
Back to Register of Resources
 
Quick links

MarBEF WIKI

Erasmus Mundus Master of Science in Marine Biodiversity and Conservation (EMBC)
Outreach

Science
Responsive Mode Programme (RMP) - Marie Nordstrom, copyright Aspden Rebecca

WoRMS
part of WoRMS logo

ERMS 2.0
Epinephelus marginatus Picture: JG Harmelin

EurOBIS

Geographic System

Datasets

 


Web site hosted and maintained by Flanders Marine Institute (VLIZ) - Contact data-at-marbef.org