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首页> 外文期刊>Zoological Science >Nereidid polychaetes as the major diet of migratory shorebirds on the estuarine tidal flats at Fujimae-higata in Japan
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Nereidid polychaetes as the major diet of migratory shorebirds on the estuarine tidal flats at Fujimae-higata in Japan

机译：Nereidid polychaetes是日本藤前的河口滩涂上迁徙shore的主要饮食

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The dietary items of five migratory shorebirds, Dunlin (Calidris alpina), Red-necked Stint (C. ruficollis), Grey Plover (Pluvialis squatarola), Whimbrel (Numenius phaeopus) and Black-headed Gull (Larus ridibundus), were examined by analyses of fecal droppings during the birds' migration or wintering and by surveys of macrobenthic fauna around their foraging sites on the tidal flats of Fujimae-higata, Nagoya, central Japan. Body parts of nereidid, capitellid, and spionid polychaetes and crustaceans were found in fecal droppings from all of these shorebirds. Two nereidid species (Hediste diadroma and Neanthes succinea) with relatively large body sizes seemed to be the majority dietary items. At one site, H. diadroma was dominant in terms of biomass (40-370 g/m(2)) throughout year except, for less than 1 g/m(2) in March and May (within or just after reproduction of this species). Monthly changes in the occurrence of food items in fecal droppings of C. alpina were examined in 1999 and 2000. Most (85-100%) of the fecal droppings contained nereidid body parts, including Hediste-specific simple chaetae from November to April, whereas only 23% of the droppings contained them in May. Chaetae of capitellid or spionid polychaetes were frequently found from January to April (38-86% of droppings). Crustacean body parts, including amphipod appendages, were frequently found from March to May (86-100% of droppings). The relationship between foraging habits of the shorebirds and the life history of their major prey nereidid species is discussed.
机译：通过分析检查了五只迁徙水鸟的饮食项目，其中包括Dunlin（Calidris alpina），红颈-（C. ruficollis），Grayover（Pluvialis squatarola），Whimbrel（Numenius phaeopus）和黑头鸥（Larus ridibundus）。在日本中部名古屋藤前东潮滩的觅食地点周围的大型底栖动物调查，了解鸟类在迁徙或越冬期间的粪便排放情况。在所有这些水鸟的粪便中发现了nereidid，capitellid和spionid多毛类和甲壳类动物的身体部位。饮食中比较常见的是两种体形较大的杀线虫种类（Hediste diadroma和Neanthes succinea）。在一个地点，除其他外，3月和5月（在此繁殖之内或之后），H。diadroma在生物量（40-370 g / m（2））方面占主导地位。种类）。在1999年和2000年，检查了高山被孢菌粪便中食物项目的每月变化。从11月至4月，大多数粪便中（85-100％）含有蠕虫状的身体部位，包括Hediste特有的简单壳菌。五月份只有23％的粪便含有它们。 1月至4月经常发现capitellid或spionid多毛et的Chaetae（粪便的38-86％）。 3-5月经常发现甲壳类动物的身体部位，包括两足动物的附肢（粪便的86-100％）。讨论了水鸟的觅食习惯与其主要捕食类杀线虫物种的生活史之间的关系。

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