Native leech preys on invasive slug?

Typography

The giant slug Limax maximus is native to Europe and Asia Minor but has spread widely, being found in North America, South America, North Africa, South Africa, Australia, New Zealand and other regions. The slug is recognized as a notorious pest because it eats agricultural and garden crops.

The giant slug Limax maximus is native to Europe and Asia Minor but has spread widely, being found in North America, South America, North Africa, South Africa, Australia, New Zealand and other regions. The slug is recognized as a notorious pest because it eats agricultural and garden crops.

In Japan, L. maximus was first found in Ibaraki Prefecture in 2006 and its population has rapidly spread throughout the country, making it difficult for scientists and local governments to monitor the slug’s occurrence and behavior.

Yuta Morii of Hokkaido University and Takafumi Nakano of Hiroshima University investigated the habitat range of L. maximus in Hokkaido, Japan, by recruiting ordinary citizens as “citizen scientists” through a local newspaper and a television program.

A total of 38 observations were reported by the citizen scientists from February 8 to October 18 in 2016, including 29 reports accompanied by a photograph, the exact location and the date of the observation. The team analyzed these 29 records along with previously published records about the species.

Read more at Hokkaido University

Image: The giant slug Limax maximus photographed in Shimamaki, Hokkaido. (Credit: Ryusei Yamakami)