Filtration Rate of the Ascidian Ciona savignyi and Its Possible Impact
Filtration Rate of the Ascidian Ciona savignyi and Its Possible Impact
复制标题
海鞘的过滤率及其可能的影响
DOI：
10.1007/s41208-017-0061-y
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Nishijima Wataru
中科院分区：
文献类型：
--
作者：
Nakai Satoshi;Shibata Jun-ya;Umehara Akira;Okuda Tetsuji;Nishijima Wataru
赛维氏玻璃海鞘是一种入侵范围日益扩大的滤食性无脊椎动物，也是一种附着在渔网等人工基质上的生物污损生物。在这项研究中，我们研究了体长和温度对其过滤速率的影响。AsC。savigni增大，过滤速率也增大。最佳过滤发生在24-25 °C的温度下。使用指数函数表示体长对过滤速率的影响，并使用多项式函数计算温度（15-27 °C）的影响。提出了预测C. savignyi是通过结合体长和温度的术语而发展起来的。使用该幂函数计算的预测过滤速率与观察值吻合良好。滤食性海鞘C. Savignyi是一种经常生长在水产养殖结构上的生物污损生物。利用已发表的描述养殖虾夷扇贝（Mizuhopecten yessoensis）数量和重量的数据以及生物污损C。在Kugurizaka实验渔场，以附着在珍珠渔网上的savignyi为例，对这两个鱼种的过滤潜力进行了估算。结果表明，C.附着在渔网上的savignyi有可能通过争夺食物对日本扇贝的生长产生负面影响。
Ciona savignyiis an invertebrate filter feeder with an expanding invasive range in the world and a biofouling organism settling on artificial substrates such as fish net. In this study, we investigated the effect of body length and temperature on its filtration rate. AsC. savignyiincreased in size, filtration rate also increased. Optimal filtration occurred at a temperature of 24–25 °C. The effect of body length on filtration rate was expressed using an exponential function and the effect of temperature (15–27 °C) was calculated using a polynomial function. An equation to predict the filtration rate ofC. savignyiwas developed, by combining the terms for body length and temperature. The predicted filtration rates calculated using this power function showed good agreement with observed values. The filter-feeding ascidian,C. savignyi,is a biofouling organism that frequently grows on aquaculture structures. Using published data describing the numbers and weights of the cultured Japanese scallop (Mizuhopecten yessoensis) and of biofoulingC. savignyiattached to pearl fishing nets in the Kugurizaka experimental fishing grounds, the filtration potential of both species was estimated as a case study. The results suggest thatC. savignyiattached to the nets has the potential to negatively impact the growth of the Japanese scallop through competition for food.