In order to detect the possible regulatory effect of non-native C. gigas on the native O. edulis, under aquaculture conditions, feeding interactions between them were investigated in a highly productive environment of Lim Bay (Adriatic Sea). The present study uses a multi-methodological approach, including stomach content, DNA barcoding and stable isotope analysis to elucidate the feeding ecology of two oyster species. The research confirmed a high overlap throughout the year in the feeding traits among native and non-native oyster species. Competition for food was not the only relationship that exists between the investigated species as the presence of O. edulis larvae in C. gigas stomach content was confirmed by DNA analysis. Findings are not in favour of introducing C. gigas to commercial aquaculture in any new areas in the Adriatic Sea and support the need to improve the existing O. edulis aquaculture and conserve its wild stocks.

为了检测在水产养殖条件下，非本地长鳍金枪鱼对本地食用牡蛎的可能调节作用，在林湾（亚得里亚海）的高产环境中研究了它们之间的进食相互作用。本研究采用多种方法，包括胃内容物，DNA条形码和稳定同位素分析，以阐明两种牡蛎的摄食生态。研究证实，全年在本地和非本地牡蛎物种之间的摄食性状有高度重叠。食物竞争并不是被调查物种之间存在的唯一关系，因为在C. gigas中存在可食的O. edulis幼虫。通过DNA分析证实了胃的含量。调查结果不赞成在亚得里亚海的任何新地区将长鳍金枪鱼引入商业水产养殖，并支持需要改善现有的食用靛蓝水产养殖并保护其野生种群。