Conference Agenda
Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
Please note that all times are shown in the time zone of the conference. The current conference time is: 10th Sept 2026, 07:06:41pm CEST (Norway)
External resources will be made available 30 min before a session starts. You may have to reload the page to access the resources.
|
Daily Overview |
| Session | |
|
Sustainable development and resource management Location: Auditorium P: Finn Kydland Session Chair: Abrha Teklay Abay, University of Copenhagen | |
    | |
Bycatch Species with Commercial Values and Waste of Individual Quota for Fishing: Evidence from Purse Seine Fishery in Japan 1: The University of Tokyo, Japan; 2: Musashi University; 3: Japan Fisheries Research and Education Agency This study illuminates bycatch species with commercial values in Japan’s purse seine fishery. In 2023, large-/medium-scaled purse seiners in the Sea of Japan and the East China Sea introduced individual quotas (IQ) for horse mackerel and chub/blue mackerel. Owing to migration patterns, chub/blue mackerel, which has a commercial value, are often caught together with horse mackerel. We first conceptualize why bycatch species with commercial values could constrain the use of IQs for other targeted species more severely. Using the panel data on daily catches and IQ usage rates at the fleet level, we then empirically show that the tighter the IQ for chub/blue mackerel, the more constrained the catch of horse mackerel. Combining a correlated random effects Tobit model with control function approach, we show that an increase in the IQ usage rate for chub/blue mackerel reduces daily catches of horse mackerel, leading to underutilization of IQs for horse mackerel. | |