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首页> 外文期刊>ICES Journal of Marine Science >Feeding habits estimated from weight-related isotope variations of mesopelagic fish larvae in the Kuroshio waters of the northeastern East China Sea
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Feeding habits estimated from weight-related isotope variations of mesopelagic fish larvae in the Kuroshio waters of the northeastern East China Sea

机译：根据东海黑潮水域中中生鱼类幼虫体重相关同位素变化估算的摄食习惯

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摘要

Bulk carbon and nitrogen stable isotope (SI) ratios (delta C-13 and delta N-15) were analysed to investigate the feeding habits of six taxa of mesopelagic fish larvae inhabiting the Kuroshio waters of the northeastern East China Sea. Large variation in tissue SI during early larval periods suggested maternal effects from parent fishes, and non-selective feeding on a variety of plankton species due to poor swimming ability. The similarity between SI ratios measured in larval tissues and those estimated for eggs of an "income breeder" in the spawning area support an " income breeder" strategy in Diaphus slender type and Vinciguerria nimbaria, while Lipolagus ochotensis seemed to show "capital breeder"-like characteristics. SI ratios of the fish larvae studied became relatively constant at species-specific body dry-weights (0.5-1.0 mg), probably due to the commencement of selective feeding, meaning SI ratios during late larval periods could be used for trophic position analysis. There was great overlap (44.6-76.5%) in trophic niche among the larval fishes within the same taxonomic family of Myctophidae. Even if principal diet components cannot be identified with gut contents analyses, diet information from other fish species occupying a similar isotopic niche can thus improve our understanding of the diets of larval fishes.
机译：分析了体碳和氮稳定同位素（SI）比率（δC-13和δN-15），以调查居住在东海东北部黑潮海域的中生鱼类幼虫的六个类群的摄食习性。在幼体早期，组织SI的巨大变化表明母鱼会产生母体影响，并且由于游泳能力差而对多种浮游生物进行非选择性摄食。在幼虫组织中测得的SI比率与产卵区“收入育种者”的卵所估计的SI比率之间的相似性，支持了Diaphus苗条型和Vinciguerria nimbaria的“收入育种者”策略，而ola豆（Lipolagus ochotensis）似乎显示出“资本育种者”-喜欢的特性。在特定物种的干重（0.5-1.0 mg）下，研究的鱼幼体的SI比变得相对恒定，这可能是由于开始选择性投食所致，这意味着后期幼体期的SI比可用于营养位置分析。在相同的Myctophidae家族中，幼体鱼的营养位有很大的重叠（44.6-76.5％）。即使无法通过肠道含量分析确定主要的饮食成分，来自其他占据类似同位素位的鱼类的饮食信息也可以改善我们对幼鱼饮食的理解。

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  • 来源
    《ICES Journal of Marine Science》 |2019年第3期|639-648|共10页
  • 作者

    Mei Weiping; Umezawa Yu; Wan Xin; Yuan Jinghan; Sassa Chiyuki;

  • 作者单位

    Nagasaki Univ Grad Sch Fisheries & Environm Sci 1-14 Bunkyo Machi Nagasaki 8528521 Japan;

    Nagasaki Univ Grad Sch Fisheries & Environm Sci 1-14 Bunkyo Machi Nagasaki 8528521 Japan|Tokyo Univ Agr & Technol Dept Environm Sci Biosphere 3-5-8 Saiwai Cho Fuchu Tokyo 1838509 Japan;

    Nagasaki Univ Grad Sch Fisheries & Environm Sci 1-14 Bunkyo Machi Nagasaki 8528521 Japan|Dalian Ocean Univ Sch Marine Sci & Environm 52 Heishijiao St Dalian 116023 Liaoning Peoples R China;

    Japan Fisheries Res & Educ Agcy Seikai Natl Fisheries Res Inst 1551-8 Taira Machi Nagasaki 8512213 Japan;

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  • 正文语种 eng
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  • 关键词

    breeder type; feeding habit; Kuroshio water; maternal effect; mesopelagic fish larvae; weight-related isotope variation;

    机译：饲养员类型;喂养习惯黑潮水;产妇效应中生鱼类幼虫;重量相关同位素变化;

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