Eggs of sweetfish decreased by 98% in Biwa lake, Prefectural gov “Unusual condition”

Shiga prefectural fisheries experimental station researched sweetfish laid 98% less eggs than usual in Biwa lake.

Biwa lake is one of the major producing centers of sweetfish.

So far, they confirmed 0.2 billion eggs, which is way less than 11.3 billion eggs of usual.
This is the lowest number since they started this research 25 years ago.

 


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滋賀県水産試験場の調査により、琵琶湖のアユの産卵数が平年の98%減となっている事が分かりました。琵琶湖は有名なアユの産地の1つです。
これまでに確認された卵の数は約2億粒で、平年値の113億粒を大きく下回っています。約25年前から始めた調査で最も少ない値となりました。

 

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Français :

Les pontes de ayu ont chuté de 98% dans le lac Biwa. La préfecture : “conditions inhabituelles”

Les pêcheries expérimentales de la préfecture de Shiga ont constaté que, dans le lac Biwa, les ayus (Plecoglossus altivelis) ont donné 98 % moins d’œufs que d’habitude.

Le lac Biwa est un des plus grands centres de production d’ayu.

Pour le moment, ils ont confirmé avoir 0,2 milliard d’œufs, ce qui n’est rien en comparaison des 11,3 milliards habituels.
C’est le chiffre le plus bas depuis qu’ils ont commencé leurs recherches il y a 25 ans.


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This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.

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