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首页> 外文期刊>Estuarine Coastal and Shelf Science >Consumption of terrestrial organic matter by estuarine molluscs determined by analysis of their stable isotopes and cellulase activity
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Consumption of terrestrial organic matter by estuarine molluscs determined by analysis of their stable isotopes and cellulase activity

机译:通过分析其稳定同位素和纤维素酶活性来确定河口软体动物对陆地有机物的消费

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摘要

We examined the feeding niche of four species of molluscs by analysis of their stable isotope signatures and cellulase activities to determine if they could utilize terrestrial organic matter. The molluscs and potential food sources were collected from the upper, middle and lower estuary of the Yura River from spring 2007 to winter 2008. All species showed positive cellulase activity which highlighted their potential to digest terrestrial organic matter. Consumption and assimilation of terrestrial organic matter by estuarine molluscs however varied spatially and temporally, reflecting species-specific differences in feeding niche and in response to variations in food availability in the estuary. Thus, terrestrial primary production in the catchment area supports secondary production of molluscs in the Yura River estuary.
机译:我们通过分析四种软体动物的稳定同位素特征和纤维素酶活性来研究它们的觅食位,以确定它们是否可以利用陆地有机物。从2007年春季至2008年冬季,从玉拉河的上,中,下河口收集了软体动物和潜在的食物来源。所有物种均显示出积极的纤维素酶活性,这突出表明了其消化陆地有机物的潜力。然而,河口软体动物对陆地有机物的消费和吸收在空间和时间上都发生了变化,反映了饲料生态位中特定物种的差异以及河口食物供应的变化。因此,集水区的陆地初级生产支持了于拉河河口的软体动物的次级生产。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2010年第3期|401-407|共7页
  • 作者单位

    Maizuru Fisheries Research Station, Kyoto University, Nagahama, Maizuru, Kyoto, 625-0086 Japan;

    Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan;

    Maizuru Fisheries Research Station, Kyoto University, Nagahama, Maizuru, Kyoto, 625-0086 Japan;

    Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan;

    Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan;

    Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan;

    National Research Institute of Aquaculture, Fisheries Research Agency, Minami-Ise, Mie 516-0193, Japan;

    National Research Institute of Aquaculture, Fisheries Research Agency, Minami-Ise, Mie 516-0193, Japan;

    Maizuru Fisheries Research Station, Kyoto University, Nagahama, Maizuru, Kyoto, 625-0086 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    stable isotope; feeding niche; molluscs; estuary;

    机译:稳定同位素喂养利基软体动物河口;

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