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New crustacean invaders in the Schelde estuary (Belgium)

机译:斯凯尔德河口(比利时)的新甲壳动物入侵者

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摘要

This paper reports on the first records of three non-indigenous crustacean species in the Zeeschelde estuary (Bel-gium). All three species are native to the Western Pacific Ocean and are probably transported in ballast water or hull fouling. The isopod Synidotea laevidorsalis has been recorded earlier in Europe from two locations, in the south of France and in Spain. The present records constitute a range extension of more than 1000 kilometres to the north. The crab Hemigrapsus takanoi and the prawn Palaemon macrodactylus were found for the first time in the brackish reaches of the Schelde estuary. The finding of these species demonstrates the vulnerability of the estuarine system to the invasion of exotic species.
机译:本文报道了Zeeschelde河口(Bel-gium)中三种非本土甲壳类物种的首次记录。这三个物种都原产于西太平洋,并且可能在压舱水或船体结垢中运输。在欧洲较早的时候,在法国南部和西班牙的两个地方记录了等脚Synidotea laevidorsalis。目前的记录是向北延伸超过1000公里的范围。螃蟹Hemigrapsus takanoi和对虾Palaemon macrodactylus首次在Schelde河口咸淡的河段发现。这些物种的发现证明了河口系统对外来物种入侵的脆弱性。

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