Selectivity of sea cucumber (Apostichopus japonicus, Selenka) for key indicators in artificial reef structure design
刺参对人工礁体设计关键指标的选择性

The behavior and selectivity of sea cucumber (Apostichopus japonicus Selenka) for key indicators (aperture, interval spacing, colour, included angle) in artificial reef structure design were studied and examined by mean attractive rate(MAR) method in this paper. The results showed that: (1) The MAR in artificial reef models increased as time went by. (2) The MAR in artificial reef models was significantly higher in natural light than in darkness (P<0.05). (3) The MAR was in the order of 2 cm> 4 cm, 16 cm> 8 cm (P<0.05) in different aperture reef models, 2 cm> 4 cm> 6 cm> 8 cm (P<0.05) in different interval spacing reef models, black, red, blue>green> white> transparent (P<0.05) in various colours reef models, and 15°> 30°> 45°, 60°> 90°, 120° (P<0.05) in different included angle reef models. Thus, the sea cucumbers ranging from 10 to 30 g, which showed negative phototaxis, need time to adapt to the artificial reef models and showed better selectivity for 2 cm aperture, 2 cm spacing, dark colour, 15°included angle than the other key indicators in artificial reef structure design.