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Table 2 Mean abundance (ind 100 m−3 ± SD) of five genera of juvenile holoplanktonic molluscs in five strata (m) of the water column during two sampling periods

From: Vertical segregation of holoplanktonic molluscs in the epipelagic layer, southern Gulf of Mexico

Stratum Cavolinia Diacavolinia Oxygyrus Diacria Clio
May
 0–6 114.1 ± 34.7 8.8 ± 3.0 2.1 ± 0.5 0.0 0.0
 6–12 118.5 ± 22.5 11.9 ± 2.1 3.8 ± 0.9 0.2 ± 0.1 0.0
 12–18 175.1 ± 19.3 45.2 ± 10.5 4.4 ± 0.9 3.4 ± 1.0 0.4 ± 0.1
 45–55 83.5 ± 14.5 2.8 ± 0.5 1.2 ± 0.2 6.7 ± 1.1 0.0
 95–105 20.1 ± 2.1 3.6 ± 0.8 0.2 ± 0.1 16.4 ± 2.3 10.0 ± 1.4
November
 0–6 19.4 ± 3.3 9.2 ± 2.0 0.0 0.0
 6–12 59.2 ± 15.2 32.6 ± 11.7 0.0 0.0
 12–18 107.4 ± 12.3 50.5 ± 11.2 1.1 ± 0.4 0.0
 45–55 21.1 ± 2.3 2.9 ± 0.4 3.3 ± 0.3 4.5 ± 1.3
 95–105 10.4 ± 1.4 0.6 ± 0.1 9.6 ± 2.6 7.2 ± 2.0
  1. Mean values are multiplied by 10