Salinity, freshwater and agricultural water preferences of glass eels of the Japanese eel Anguilla japonica collected in southern Japan

Water-choice trial experiments revealed that Anguilla japonica glass eels collected in southern Japan possess strong preferences for fresh water and agricultural water. Their locomotor activity and preference for fresh water were higher and stronger, respectively, in this study when compared to previous studies conducted at lower temperatures. These results suggest that their locomotor activity and preference for fresh water is influenced by water temperature. The attraction to agricultural water indicates their upstream migration and habitat selection could be influenced by agricultural water.

Automated summary

The study found that Anguilla japonica glass eels from southern Japan show strong preferences for fresh water and agricultural water, with water temperature influencing their locomotor activity and preference for fresh water. The attraction to agricultural water suggests a potential impact on their upstream migration and habitat selection.