Publications by authors named "H Mitamura"
Understanding the mechanism by which non-native fish species integrate into native communities is crucial for evaluating the possibility of their establishment success. The genus Pangasianodon, comprising Pangasianodon gigas and Pangasianodon hypophthalmus, has been introduced into reservoirs, which are non-native habitats, for fishery stock enhancement. P.
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- The study examined the homing behavior of Japanese eels (A. japonica) in a freshwater river in Japan, focusing on how these eels navigate back to their habitats.
- Researchers used acoustic telemetry to track 18 eels, finding that those over 400 mm in length had a strong tendency to return to their original sampling locations during dark periods.
- Results indicated that olfactory cues were not significant for short-range homing, suggesting that other mechanisms might be at play for these eels in freshwater environments.
Article Synopsis
- Dietary information from aquatic organisms helps predict interactions and understand ecosystem functionality, especially in freshwater habitats with generalist fish species accessing diverse food sources.
- This study focuses on striped catfish feeding habits at different life stages, using isotopic and fatty acid analysis to differentiate their food sources from various chains.
- Findings reveal that adult catfish rely on primary photosynthetic food sources, while juvenile catfish utilize both anoxic decomposition and photosynthetic production, highlighting the importance of anoxic food chains in tropical fish diets.