Detrimental Effect of Moon Jellyfish Aurelia aurita on Cooling of Sea Water in the Fish Hold of Set Net Fishing Boat.
Detrimental Effect of Moon Jellyfish Aurelia aurita on Cooling of Sea Water in the Fish Hold of Set Net Fishing Boat.
复制标题
月水母 Aurelia aurita 对定置网渔船鱼舱内海水冷却的不利影响。
DOI：
10.2331/suisan.64.1046
复制
发表时间：
1998
影响因子：
0.4
通讯作者：
Y. Hayashi
中科院分区：
文献类型：
--
作者：
Y. Hayashi
鱼舱冷却不良导致定置网渔获物新鲜度下降。这种现象通常发生在当设置的网中意外捕获的水母与渔获物一起保持在船舱中时，这已经被渔民认识了很长时间。实验研究了月水母引起的这种有害影响。即使用冰冷却，仅包含水母的鱼舱的温度也保持在20°C左右。鱼舱的最大温升与混合海蜇的总湿重成比例地增加，降低了鱼舱中鱼的质量和新鲜度。当混合水母在渔船中自然振动时，鱼舱的温度进一步升高，达到水母不振动时观察到的温度的1.5倍。虽然海水的导热性受到水母分泌的粘液的影响，但分泌的粘液的数量和蛋白质浓度与水母的体重成比例地增加。
Poor cooling in the fish hold leads to the decline of freshness in the set net catch. This phenomenon typically occurs when jellyfish accidentally captured in the set net are kept in the hold with the fish catch, which has been recognized by fisherman for a long time. Such detrimental effects caused by moon jellyfish were investigated experimentally. The temperature of the fish hold only containing the jellyfish remained at around 20°C even cooled with ice. The maximum temperature rise of the fish hold increased in proportion to the total wet weight of the mixed jellyfish, decreasing the quality and freshness of fish in the hold. The temperatures of the fish hold further increased when the mixed jellyfish were naturally vibrated in the fishing boat, reaching 1.5 times as high as that observed when the jellyfish were allowed to stand without vibration. While the heat conductivity of sea water was affected by the mucus secreted by the jellyfish, the quantities and protein concentrations of the secreted mucus increased in proportion to the body weight of the jellyfish.