Impacts of New Zealand screwshells (Maoricolpus roseus) on native scallop distribution and behaviour

The impact of the introduction of the New Zealand screwshell (Maoricolpus roseus) on scallop distribution and behaviour in the D'Entrecasteaux Channel, SE Tasmania was investigated. The impact of both live and dead and empty M. roseus shells on the distribution of two sympatric scallop species, queen scallop (Equichlamys bifrons) and doughboy scallop (Chlamys asperrimus) was quantified at large spatial scales. Also quantified was the impact of M. roseus on the distribution and behaviour of the commercial scallop (Pecten fumatus), at both large and small spatial scales.

本研究针对塔斯马尼亚东南部德恩特卡斯托海峡内新西兰螺（Maoricolpus roseus）的引入对扇贝分布与行为的影响展开了调查。研究在大空间尺度下，量化了活的新西兰螺、死亡个体及空壳对两种同域扇贝物种——女王扇贝（Equichlamys bifrons）和面团仔扇贝（Chlamys asperrimus）分布的影响；同时还在大、小两种空间尺度下，量化了新西兰螺对商业扇贝（Pecten fumatus）分布与行为的影响。