Open AccessThe Effect of Different Substrates on Larvae Settlement in Sea Cucumber, Apostichopus japonicus Selenka
Author(s) -
Li Li,
Li Qi,
Kong Lingfeng
Publication year - 2010
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.2009.00341.x
Subject(s) - apostichopus japonicus , sea cucumber , biology , diatom , larva , significant difference , plastic film , zoology , botany , ecology , composite material , materials science , layer (electronics) , statistics , mathematics
In this study, the effect of various substrata on the settlement of sea cucumber, Apostichopus japonicus , was evaluated. The settlement of the larvae in the experiments with three different substrata was compared and showed that a polyethylene plastic sheet attracted significantly more larvae ( P < 0.05) than plastic film and monofilament nylon. In addition, the highest setting rate was achieved for the plastic sheet with diatom‐based films, followed by effective microorganisms (EMs)‐based films and natural microbial films, and the least recorded was on the plastic sheet without biofilms. There was a significant difference ( P < 0.05) in the mean setting rates of the treatments, except between the diatom‐based films and the EM‐based films. Plastic sheets also appeared attractive to setting larvae when coated with tissue extracts of the same species. The number of settled larvae on substrates with tissue extracts was significantly greater ( P < 0.05) than that on the control.