Abstract: Based on the investigation at 121 positions in East China Sea in 2001 Autumn, this paper analyzed the spatial heterogeneity of hairtail (Trichiurus japonicus) and seven kinds of small-scale fish (Setipinna taty,Collichthys lucidus,Champsodon capensis,Amblychaeturichthys hexanema,Acropoma japonicum,Benthosema pterotum andApogon lineatus),and the spatial relationships among them.The results indicated that the semivariogram curve of hairtail was very similar to those of Apogon lineatus,Amblychaeturichthys hexanema and Acropoma japonicum,with highly significant correlations (P<0.01),and the semivariograms of Setipinna taty and Collichthys lucidus appeared as pure nugget effect.The others could be described as spherical or exponential model that had high spatial autocorrelation.The ranges of Apogon lineatus,Amblychaeturichthys hexanema and Acropoma japonicum were equal to or beyond that of hairtail (265 km).Hairtail was spatially close to these three species,and thus,the latter might be the main preys of hairtail.

Key words: Syringa L, Embryo, Culture in vitro