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首页> 外文期刊>Scientia Marina >Feeding ecology of the transparent goby Aphia minuta (Pisces: Gobiidae) in the northwestern Adriatic Sea
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Feeding ecology of the transparent goby Aphia minuta (Pisces: Gobiidae) in the northwestern Adriatic Sea

机译：西北亚得里亚海的透明虾虎鱼Aphia minuta（双鱼座：Gobiidae）的饲养生态

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摘要

The feeding ecology of the transparent goby Aphia minuta was examined in spring (May 2003) in the coastal waters off Comacchio, in the northwestern Adriatic Sea. Stomach content analysis indicated A. minuta to be a planktivorous species, feeding exclusively on pelagic invertebrates. The diet composition was dominated by the calanoid copepods Acartia clausi and Temara longicornis, followed in decreasing order of importance by other copepods (especially calanoids and Oncaea spp.) and larvae of decapods, polychaetes and bivalves. A. minuta exhibited a generalistic feeding strategy with a relatively broad niche width. Abundant taxa in the environment, such as A. clausi and T. longicornis, were seldom selected, whereas rare taxa, such as larvae of polychaetes and decapods, were highly selected. According to the observed ontogenetic shift in diet, small-size individuals relied preferentially on juvenile T. longicornis and Oncaea spp., whereas large-sized specimens consumed preferably A. clausi and calanoids. The positive relationship found between prey and fish size may help to mitigate the intraspecific competition for food resources.
机译：春季（2003年5月）在亚得里亚海西北部的科马基奥（Corcomchio）附近的沿海水域检查了透明虾虎鱼Aphia minuta的喂养生态。胃内容物分析表明小菜曲霉是浮游性物种，仅以浮游无脊椎动物为食。饮食组成以cal足类co足类动物（Acartia clausi）和长鳍Te（Temara longicornis）为主，其次是other足类动物（尤其是cal足类动物和Oncaea spp。）以及十足纲，多毛类和双壳类幼虫。 min。A. minuta表现出具有相对较窄的利基宽度的通用饲养策略。很少选择环境中的丰富分类单元，例如青芒和长吻鳄，而稀有分类，例如多毛poly和十足纲的幼虫。根据观察到的饮食遗传发生变化，小型个体优先依赖少年长锥T和Oncaea spp。，而大型个体则优选食用青芒和类胡萝卜素。猎物与鱼类大小之间的正相关关系可能有助于减轻种内对食物资源的竞争。

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