Seasonal changes in the density and vertical distribution of nauplii, copepodites and adults of the genera Oithona and Oncaea (Copepoda) in the surface water of Toyama Bay, southern Sea of Japan

この論文にアクセスする

この論文をさがす

著者

抄録

In this study, we examined seasonal changes in the vertical population density of each developmental stage (nauplius and copepodite) of Oithona and Oncaea species in the surface water of Toyama Bay from 1997 to 1999. Furthermore, we investigated the detailed vertical distribution (0 m, 25 m and 50 m depth) of the naupliar stages, which are regarded as an important food source for fish larvae. Major changes in the community structure of nauplii, which occurred at different sampling depths and in different seasons, are considered to have been influenced by the occurrence of adults and changes in the hydrographic conditions, including temperature and water currents. In winter to early summer (January to June) nauplii of Oithona similis and Oithona atlantica, copepodites and adults, were abundant, while those of Oithona plumifera, and other species of Oithona and Oncaea showed a higher density between August and December.During the spring season, when many fish larvae appeared, O. similis nauplii occurred at higher densities of more than 105 indiv. m−3 in the upper layer (0 m and 25 m depth) than those of O. atlantica. The weighted mean depth of O. atlantica nauplii was significantly deeper than that of O. similis nauplii. The respective vertical distributions of the nauplii of O. atlantica and O. similis were similar to the distributions of adults. Oithona similis nauplii are suggested to be a potentially important food item for fish larvae in spring because of their high density and similar vertical distribution to many fish larvae.

収録刊行物

  • Plankton & benthos research  

    Plankton & benthos research 3(3), 143-151, 2008-08-01 

    日本プランクトン学会、日本ベントス学会

参考文献:  38件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  1件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10021907471
  • NII書誌ID(NCID)
    AA12130745
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    18808247
  • NDL 記事登録ID
    9638099
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z54-J424
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ