| parasite populations and communities from the shallow littoral of the orther bight (fehmarn, sw baltic sea). | parasites of host guilds, such as mud snails (five species), benthic crustaceans (six species) and small-sized fishes ( pomatoschistus microps, gasterosteus aculeatus, pungitius pungitius, young pleuronectes flesus), were investigated in the other bight off west fehmarn (kiel bight, german baltic sea). the hosts, especially the herbivorous hydrobia spp, gammarus spp and idothea chelipes, attained extremely high densities in three habitats ( enteromorpha belt, fucus belt, sandy bottom), which may ... | 2002 | 12122431 |
| rapid genetic divergence in postglacial populations of threespine stickleback (gasterosteus aculeatus): the role of habitat type, drainage and geographical proximity. | the goal of this study was to evaluate the role of common ancestry, and of geographical or reproductive isolation, in genetic divergence in populations of threespine sticklebacks (gasterosteus aculeatus). using seven dna microsatellite loci we compared the effects of habitat type, drainage system and geographical proximity on genetic distance among 16 populations situated in an area in schleswig-holstein (germany) that became deglaciated approximately 12 000 years ago. stickleback population str ... | 2001 | 11703651 |