Bait testing for the invasive Asian crabs (Hemigrapsus spp.)

Abstract

Hemigrapsus sanguineus and Hemigrapsus takanoi are invasive shore crabs in the German Wadden Sea. The monitoring is an important task to evaluate their impact on the ecosystem. This paper analyzes the preference of Hemigrapsus sp. for different bait types. The results of the chi square test based on Pearson shows a preference for Mytilus edulis as bait. M. edulis is the superior bait type for Hemigrapsus sp.