Abstract

A special survey has been conducted to record the distribution of Chinese mitten crab, Eriocheir sinensis in the eastern Gulf of Finland basin (Baltic Sea). An illustrated questionnaire/registration form was distributed among the commercial fishermen. The survey indicated a significant increase in the abundance of adult crabs in 2003 migrating downstream in the Neva River, the connecting channel between the Gulf of Finland and Lake Ladoga. On October 25, 2005, the Chinese mitten crab was reported from Taypolovsky Bay, Lake Ladoga and this is the first confirmed record from Europe’s largest lake.

Highlights

  • The Chinese mitten crab Eriocheir sinensis H

  • A special survey has been conducted to record the distribution of Chinese mitten crab, Eriocheir sinensis in the eastern Gulf of Finland basin (Baltic Sea)

  • Eriocheir sinensis was first recorded from the freshwater ecosystems of the Lake Ladoga basin in the late 1990s from the Vuoksa River (Panov et al 2003)

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Summary

Introduction

The Chinese mitten crab Eriocheir sinensis H. A special survey has been conducted to record the distribution of Chinese mitten crab, Eriocheir sinensis in the eastern Gulf of Finland basin (Baltic Sea).

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