Toxicity of wild juvenile “komonfugu” Takifugu flavipterus in the Bay of Sanriku Coast, Tohoku Area, Northern Japan
Toxicity of wild juvenile “komonfugu” Takifugu flavipterus in the Bay of Sanriku Coast, Tohoku Area, Northern Japan
复制标题
日本北部东北地区三陆海岸湾野生黄东方鲀幼鱼的毒性
DOI：
10.1007/s12562-021-01566-x
复制
发表时间：
2022
影响因子：
1.9
通讯作者：
Yamamori K
中科院分区：
文献类型：
--
作者：
Amano M;Kubota H;Kaneda H;Aoki D;Yamamori K
为了阐明河豚毒素(TTX)在河豚体内蓄积的机制，我们比较了两组野生河豚幼鱼的毒性。第一组样本来自位于日本北部东北地区三陆太平洋海岸大江湾的大泽渔港(FP)。第二组是从小泽FP采集的，饲养在室外实验室水箱中，供应不同的海水(Yoshihama Bay)。定期在同一天对这些鱼进行采样。ONisawa FP的TTX(小鼠单位(MU)/FISH)含量在20天前一直增加，此后没有变化，而实验室水箱中的TTX含量仍然很低，TTX浓度(MU/g FISH)下降。接下来，我们比较了采集于冈井湾(Onisawa FP和Okirai FP)和Yoshihama Bay(Yoshihama FP)的野生幼鱼黄翅T.T.flavipterus的毒性。在来自三个FP的鱼之间观察到TTX水平有很大的差异。小泽渔场鱼体中TTX的含量和浓度均高于其他两个渔场。这些结果表明，三里库湾黄翅目鱼幼鱼的毒性活性存在很大的变异。
To clarify the mechanism of tetrodotoxin (TTX) accumulation in pufferfish, we compared the toxicity of two sets of wild juvenile “komonfugu”Takifugu flavipterus. The first set was sampled from Onisawa Fishing Port (FP) located in Okirai Bay, the Pacific Coast of Sanriku, Tohoku Area, Northern Japan. The second set was collected from the Onisawa FP and reared in an outdoor laboratory tank supplied with different seawater (Yoshihama Bay). The fish were sampled regularly and on the same days. The amount of TTX (mouse unit (MU)/fish) in the fish at Onisawa FP increased until 20 days and thereafter it did not change, while the amount of TTX in the fish in the laboratory tank remained low, and the TTX concentration (MU/g fish) decreased. Next, we compared the toxicity of wild juvenileT. flavipteruscollected from Okirai Bay (Onisawa FP and Okirai FP) and Yoshihama Bay (Yoshihama FP). Large differences in TTX levels were observed among the fish from the three FPs. The amounts and concentrations of TTX in the fish at Onisawa FP were higher than those in the fish from the other two FPs. These results indicate that a large variation in toxic activity exists in the juvenileT. flavipterusin the bay of the Sanriku Coast.