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Reports confirm that a scenario of prolonged scarcity and a new surge in roe (ikura) prices are already being anticipated.

Hokkaido Faces Another Critical Season for Autumn Salmon

Click on the flag for more information about Japan JAPAN
Thursday, August 13, 2026, 00:10 (GMT + 9)

The official scientific forecast projects a 46.9% decrease in returns compared to 2025, threatening to intensify supply shortages and elevate price pressures on wild salmon and ikura in Japan.

Commercial autumn salmon (Oncorhynchus keta) fishing in Hokkaido could face another exceptionally weak season in 2026. Official scientific forecasts point to a return of 3.645 million fish, representing a 46.9% decrease compared to the 6.859 million recorded in 2025.

The data originates from the Hokkaido Research Organization (北海道立総合研究機構), which published its assessment on June 24. The research organization notes that the 2025 return of 6.86 million fish was the lowest since the start of the modern historical series, representing only 39% of the previous year's total.

It is important to clarify that the 2026 forecast does not describe the volume actually landed at ports. Rather, it is an estimate of the total number of salmon returning to Hokkaido (coastal catches plus river escapement). Therefore, it should not be confused with the final landing figures of the commercial fleet.

 

Deterioration Concentrated in Key Producing Regions

Scientific projections anticipate year-on-year declines across virtually all fishing areas:

  • Okhotsk: 2.108 million fish (-50.1% compared to 2025)

  • Nemuro: 331,000 fish (-48.1%)

  • Eastern Erimo: 564,000 fish (-12.1%)

  • Western Erimo: 251,000 fish (-58.1%)

  • Sea of Japan: 390,000 fish (-48.5%)

  • Total Hokkaido: 3.645 million fish (-46.9%)

The greatest potential impact is concentrated in the Okhotsk region, which typically accounts for more than half of total returns. In 2026, Okhotsk is expected to receive 2.108 million fish, down from 4.223 million in 2025.

Weakness is also evident in the age structure of the stock. In 2025, four-year-old fish—the primary age class supporting the fishery—dropped to 4.32 million units (-34% year-on-year). Meanwhile, the three-year-old class fell to 490,000 individuals, marking the lowest level in the historical series.

As in the past, the number of returning fish was predicted primarily using the sibling method. This method estimates the number of returning 4-year-old fish for the current year based on the number of returning 3-year-old fish from the previous year, and the number of returning 5-year-old fish based on the number of returning 4-year-old fish from the previous year. However, it has become evident that prediction accuracy has declined in recent years due to a rapid shift toward earlier maturation (a trend toward younger ages). Consequently, since 2021, the analysis has relied solely on data from younger age classes (indicated by circles in red); furthermore, for this year's forecast, the data used for analysis was limited to approximately the five most recent age classes.

Risks to Wild Salmon and Ikura Supply

An effective return close to 3.6 million fish would reinforce severe supply constraints on Japanese wild salmon and raw material for salmon roe (ikura) production. Reports from TV Asahi on August 11 indicate that market participants are already anticipating a prolonged shortage and further price increases for salmon roe.

A reduced inflow of raw material creates direct operational pressures on:

  • Coastal fixed-net fishery catches.

  • Processing volumes at sorting, freezing, and salting facilities.

  • Raw material availability for ikura processing.

  • Autumn procurement contracts.

  • Increased demand for farmed salmon and imported products as substitutes.

Photo: Stockfile / FIS

Uncertainty and Model Limitations

Hokkaido authorities have warned that the precision of predictive models has deteriorated due to shifts toward earlier maturation ages in salmon. Since 2021, projections have primarily relied on the youngest age classes and recent biological data.

Consequently, the 3.645 million figure should be treated as a biological warning sign and an indicator of supply risk rather than a definitive final outcome. Actual landed volumes and price trends will depend on the upcoming official catch reports for the 2026 season, which are aggregated by the prefectural government every ten days.


🇯🇵 日本語 (Japanese Version) | AIによる自動翻訳

北海道の秋サケ漁、2026年シーズンも再び深刻な低迷の危機

公式の科学的予測によると、2026年の来游数は2025年比で46.9%減少する見込みであり、日本国内における天然サケおよびイクラの供給不足と価格上昇の圧力がさらに強まる恐れがあります。

北海道における秋サケ(Oncorhynchus keta、シロサケ)の沿岸商業漁業は、2026年シーズンも再び極めて深刻な不漁に見舞われる可能性があります。公式の科学的予測によれば、来游数は364万5,000尾にとどまり、2025年685万9,000尾から46.9%減少すると見込まれています。

このデータは、6月24日に評価結果を公表した北海道立総合研究機構によるものです。同研究機構は、2025年の来游数(686万尾)について、近代的な統計記録の開始以来最低の水準であり、前年のわずか39%に相当したと指摘しています。

なお、2026年の予測数字は実際に港へ水揚げされる数量を示したものではありません。沿岸での捕獲数と河川への遡上数を合わせた、北海道へ回帰する秋サケの総来游数の推計値です。したがって、商業船団による最終的な水揚げ高とは異なる点に注意が必要です。

主要生産地域における深刻な減少

科学的予測では、ほぼすべての漁獲エリアで前年比減が予想されています。

  • オホーツク: 210万8,000尾2025年-50.1%

  • 根室: 33万1,000尾-48.1%

  • えりも以東: 56万4,000尾-12.1%

  • えりも以西: 25万1,000尾-58.1%

  • 日本海: 39万尾-48.5%

  • 北海道合計: 364万5,000尾-46.9%

最も大きな影響が懸念されるのは、全体の半数以上の来游量を占めるオホーツク地域です。2025年には422万3,000尾だった同地域の来游数は、2026年には210万8,000尾まで半減する見通しです。

資源の年齢構成においても弱さが顕著に表れています。2025年の漁獲を支える主力であった4歳魚の回帰数は432万尾(前年比 -34%)に減少しました。また、3歳魚の回帰数は49万尾にとどまり、過去最低水準を記録しました。

天然サケおよびイクラ供給への懸念

実際の来游数が360万尾程度にとどまった場合、日本国内における天然サケの供給および生すじこ(イクラ原料)の確保に対する制約が一段と強まることになります。8月11日テレビ朝日の報道でも、市場関係者の間で更なる品薄感とイクラ価格の再高騰に対する懸念が広がっていることが伝えられています。

原料供給の減少は、以下の各分野へ直接的な影響を及ぼします。

  • 沿岸定置網漁業の漁獲量減少。

  • 選別・凍結・塩蔵加工施設における稼働率および加工量の低下。

  • イクラ加工用原料の不足。

  • 秋季調達契約の不履行リスクや交渉難航。

  • 養殖サケや輸入代替品への需要シフト。

予測モデルの限界と今後の不確実性

北海道当局は、サケの成熟年齢の若年化(早熟化)に伴い、予測モデルの精度低下が生じていることを指摘しています。2021年以降、予測手法は主に若齢魚の回帰傾向と直近の生物学的データに依存して算出されています。

そのため、364万5,000尾という数字は確定的な結果ではなく、供給リスクを示す警戒指標として解釈する必要があります。実際の水揚げ量や価格動向については、道庁から10日ごとに発表される2026年シーズンの速報値を注視していく必要があります。


🇨🇳 中文 (Simplified Chinese Version) | 由人工智能自动翻译

北海道秋鲑捕捞业在2026季面临再次严重受挫的危机

官方科学预测显示,2026年回游量较2025年将下降46.9%,这可能会加剧日本野生鲑鱼及鲑鱼籽(Ikura)的供应紧张并推高市场价格。

北海道的商业秋鲑(Oncorhynchus keta,大平台鲑/秋鲑)捕捞业在2026年产季可能再次面临极其严峻的低迷局势。官方科学预测指出,秋鲑总回游量预计仅为364.5万尾,较2025年685.9万尾大幅减少46.9%

该数据源自北海道立综合研究机构Hokkaido Research Organization)于6月24日发布的评估报告。该研究机构指出,2025年686万尾回游量已是现代历史记录中的最低水平,仅占前一年总量的39%

需要明确的是,2026年的预测数字并非指实际在港口卸货的捕捞量,而是对返回北海道沿海及河流的总鲑鱼数量(沿海捕获量与河流溯河量之和)的估算。因此,切勿将其与商业渔船的最终卸货总量混淆。

主要产区面临集中下滑

科学预测显示,几乎所有捕捞区域的同比回游量均将出现下降:

  • 鄂霍次克海沿岸Okhotsk):210.8万尾(较2025年 -50.1%

  • 根室Nemuro):33.1万尾-48.1%

  • 襟裳以东Eastern Erimo):56.4万尾-12.1%

  • 襟裳以西Western Erimo):25.1万尾-58.1%

  • 日本海沿岸39万尾-48.5%

  • 北海道合计364.5万尾-46.9%

预计影响最严重的区域集中在鄂霍次克地区,该地区通常占总回游量的一半以上。2026年鄂霍次克预计仅有210.8万尾鲑鱼回游,而2025年这一数字为422.3万尾

种群的年龄结构同样显现出衰退迹象。2025年,作为支撑捕捞业主力的4龄鱼数量降至432万尾(同比减少34%);同时,3龄鱼数量降至49万尾,创下历史序列中的最低记录。

野生鲑鱼及鲑鱼籽(Ikura)供应风险

若实际回游量接近360万尾,将进一步加剧日本野生鲑鱼市场以及鲑鱼籽(ikura)加工原料的供应瓶颈。朝日电视台TV Asahi)在8月11日的报道中指出,市场从业者已在评估长期缺货的可能性以及鲑鱼籽价格再次上涨的风险。

原料供应不足将对以下产业环节产生直接冲击:

  • 沿海定置网渔业的捕获产量。

  • 分选、冷冻和盐渍加工厂的产能利用率。

  • 加工鲑鱼籽(ikura)所需的生原料供应。

  • 秋季采购合同的履行与签订。

  • 养殖鲑鱼及进口水产品作为替代品的市场需求。

预测模型的局限性与不确定性

北海道官方警告称,由于鲑鱼成熟年龄提前,预测模型的精确度有所下降。自2021年以来,评估主要依赖较年轻年龄组的回游数据以及近年来的生物学记录。

因此,364.5万尾的数据应被视为供应风险的警示信号,而非最终的捕捞结果。实际卸货量和价格走势将取决于2026产季首批捕捞简报的发展,相关数据由北海道政府每10天汇总并公布一次。

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