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Small effective population sizes in two planktonic freshwater copepod species ( Eudiaptomus ) with apparently large census sizes
Author(s) -
ZELLER M.,
REUSCH T. B. H.,
LAMPERT W.
Publication year - 2008
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1111/j.1420-9101.2008.01589.x
Subject(s) - biology , copepod , population , effective population size , zoology , ecology , crustacean , demography , genetic variation , genetics , sociology , gene
In small planktonic organisms, large census sizes ( N c ) suggest large effective population sizes ( N e ), but reliable estimates are rare. Here, we present N e / N c ratios for two freshwater copepod species ( Eudiaptomus sp.) using temporal samples of multilocus microsatellite genotypes and a pseudo‐likelihood approach. N e / N c ratios were very small in both Eudiaptomus species (10 −7 –10 −8 ). Although we hypothesized that the species producing resting eggs ( E. graciloides ) had a larger N e than the other ( E. gracilis ), estimates were not statistically different ( E. graciloides : N e = 672.7, CI: 276–1949; E. gracilis : N e = 1027.4, CI: 449–2495), suggesting that the propagule bank of E. graciloides had no detectable influence on N e .