[Changes in the business management status of scallop aquaculture (individual operators)] (Unit: 1,000 yen)

Fishery earnings (a)-(b)	Fishery income (a)	Fishery expenditure (b)	Labor cost	Repair cost	Depreciation cost
2006	4,321	14,025	9,704	2,101	313	1,415
2007	4,980	15,360	10,380	2,313	367	1,553
2008	3,352	14,466	11,114	2,437	358	1,781
2009	4,260	15,330	11,070	2,598	360	1,654
2010	4,466	15,302	10,836	2,947	1,310	2,228
2011	2,971	16,105	13,134	2,591	963	1,690
2012	1,197	13,767	12,570	2,720	877	1,691
Average	3,650	14,908	11,258	2,530	650	1,716

[Changes in the business management status of laver aquaculture (individual operators)]

(Unit: 1,000 yen)

Source: MAFF, Statistical Survey on Fishery Management

Fishery earnings (a)-(b)	Fishery income (a)	Fishery expenditure (b)	Labor cost	Fuel cost	Repair cost	Sales commission	Depreciation cost
2006	5,758	17,320	11,562	869	1,520	681	697	2,519
2007	6,843	18,883	12,040	924	1,769	534	707	2,415
2008	5,546	18,187	12,641	1,034	2,082	720	694	2,631
2009	5,455	18,122	12,667	1,313	1,529	654	679	2,665
2010	5,143	17,176	12,033	1,300	1,519	680	595	2,461
2011	4,573	16,732	12,159	865	1,740	724	636	2,601
2012	6,836	21,013	14,177	1,097	1,987	1,260	803	2,691
Average	5,736	18,205	12,468	1,057	1,735	750	687	2,569

Source: MAFF, Statistical Survey on Fishery Management

## (Income stability measures for aquaculture business)

In order to ensure both appropriate management of aquaculture sites and stable fishery business management, the national government implements a project of income stability measures using the fishery mutual aid system, targeting aquaculture operators making well-planned efforts to improve aquaculture sites by reducing the environmental load on the sites, such as decreasing the aquaculture production volume by 5% or more from the past level, in accordance with the Sustainable Aquaculture Production Assurance Act.

A fisher and the national government contribute funds in advance, and in the event that the fisher's income falls beyond a certain extent, the decreased income is compensated by using that reserve. The compensation is limited to cover no more than the 10% portion between 90% to 80% of the reference production value. In FY2014, a new system is introduced to provide support no more than the 15% portion between 95% to 80% of the reference production value when the operator reduces the volume of cultured organisms by 10% on average, so as to promote stronger efforts to improve the aquaculture sites.

[Outline of the resource management/income stability measures]

## (2) Environment of aquaculture sites

Aquaculture, particularly that of fish and shellfish, has received damage from red tide, which is mainly caused by a massive increase of phytoplankton. In the Seto Inland Sea, the frequency of red tide has been decreasing in the long term, and in the Kyushu sea area, the frequency has remained flat at a high level since 2000, but fishery damage still occurs.

In recent years, there has been frequent occurrences of color loss where the color of cultured laver fails to grow dark. The factors causing the color loss are said to be the consumption of nutrients by propagated phytoplankton and the reduced amount of nutrients brought to the sea due to the development of sewage treatment facilities. In the Seto Inland Sea, measures are taken such as increasing the discharge of nitrogen from sewage treatment facilities within the limit of the discharge standard value and discharging river water containing nutrients from dams during the laver culturing season.

High water temperature has caused a high incidence of sudden mass deaths of scallops in Mutsui Bay. In laver aquaculture, the red rot disease occurred due to high water temperature. Also, in recent years, damage has been reported in kelp aquaculture where second-year kelp close to shipment withered and died for an unknown reason.

Deterioration of the environment of aquaculture sites has been prevented as a result of aquaculture operators implementing the aquaculture area improvement plan formulated under the Sustainable Aquaculture Production Assurance Act.

[Changes in the number of red tide occurrences and the number of red tide damage cases]

Source: Fisheries Agency survey