Colonization of the deep sea by fishes.
Bottom Line: Analysis of maximum depth of occurrence of 11 952 marine fish species shows a global decrease in species number (N) with depth (x; m): log10 N = -0·000422x + 3·610000 (r(2) = 0·948).The slopes for the Classes Myxini (-0·000488) and Actinopterygii (-0·000413) follow this trend but Chondrichthyes decrease more rapidly (-0·000731) implying deficiency in ability to colonize the deep sea.Deep-sea invasive families such as Ophidiidae and Liparidae make the greatest contribution to fish fauna at depths >6000 m.
Affiliation: Oceanlab, Institute of Biological and Environmental Sciences, University of Aberdeen, Main Street, Newburgh, Aberdeen AB41 6AA, U.K.Show MeSH
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Mentions: There was an overall trend of logarithmic decrease in species number with depth described by the fitted regression equation: all marine fish species log10N = −0·000422x + 3·610000 (r2 = 0·948), where N is the number of species maximum depths per 500 m depth stratum and x is the depth (m). Similar trends were seen for the individual classes (Fig. 1).
Affiliation: Oceanlab, Institute of Biological and Environmental Sciences, University of Aberdeen, Main Street, Newburgh, Aberdeen AB41 6AA, U.K.