Recruitment of Antarctic marine eukaryotes onto artificial surfaces

摘要: Activities related to Antarctic research stations have caused significant local impacts on the marine environment, potentially affecting recruitment of benthic invertebrates. Herein, we report community structure recruiting eukaryotes onto artificial substrata using molecular techniques. Slides were deployed at three sites adjacent McMurdo Station, Scott Base, and Cape Armitage in Sound. Denaturing gradient gel electrophoresis (DGGE) analysis revealed complex diverse eukaryotic communities had established surfaces a range site depth regimes after 12 months. Analysis similarity results detected significantly greater variability profiles among than within sites. The nonmetric multidimensional scaling plot constructed from DGGE banding patterns different 18 m depths. Despite this, variation composition was between depths, especially Base. Sequence excised bands predominance arthropod dinoflagellate sequences Armitage. In contrast, wide diversity phyla including cnidaria, bryozoa, protozoa, dinoflagellates, arthropods, platyhelminths, annelids present two stations. abundance diatoms assemblages exceeded Station Base by almost orders magnitude. discovery that distinct recruit depths is probably due interactions multiple factors water quality, larval supply, light. detection sessile slides each indicates pollution not an impediment successful these species.