ABSTRACT

The aim of the present study was to determine species composition of ascidians and to detect the occurrence of alien ascidian species in İzmir Bay (Eastern Aegean Sea). The study was conducted at seven stations situated in recreational marinas and frequently used places for boating, fishing, and shipping activities in İzmir Bay between 25 and 27 August 2015 and between 23 and 26 November 2015. According to the findings, the non-native ascidian species such as Microcosmus squamiger Michaelsen, 1927, Didemnum ahu Monniot C. & Monniot F., 1987, and Polyclinum sp. were recorded for the first time on natural and artificial substrates at the sampling stations. The results indicate an increase in the number of alien ascidian species in the region. Also, the findings of this study showed that global marine invasive species M. squamiger has spread from the western Mediterranean to the eastern Mediterranean.

摘要

本研究的目的是确定海生动物的种类组成并检测伊兹密尔湾（东爱琴海）中外来海生动物的发生。这项研究是在2015年8月25日至27日以及2015年11月23日至26日之间在伊兹密尔湾的休闲游艇码头和经常用于划船，钓鱼和航运活动的七个地点进行的。根据调查结果，非本地人物种如Microcosmus squamiger Michaelsen，1927年，Didemnum AHU Monniot C.＆Monniot F.，1987，和Polyclinumsp。在采样站首次在天然和人造底材上记录了这些化合物。结果表明该地区外来生物物种的数量有所增加。此外，这项研究的结果表明，全球海洋入侵物种M. squamiger已从地中海西部传播到地中海东部。