Vertical distribution, population structure and life cycles of four oncaeid copepods in the Oyashio region, western subarctic Pacific
Vertical distribution, population structure and life cycles of four oncaeid copepods in the Oyashio region, western subarctic Pacific
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西亚北极太平洋亲潮地区四种桡足类的垂直分布、种群结构和生命周期
DOI:
10.1007/s00227-006-0382-5
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发表时间:
2006
期刊:
影响因子:
2.4
通讯作者:
T. Ikeda
中科院分区:
文献类型:
--
作者:
Y. Nishibe;T. Ikeda
Vertical distribution and population structure of four dominant oncaeid copepods (Triconia borealis, Triconia canadensis, Oncaea grossa and Oncaea parila) were investigated in the Oyashio region, western subarctic Pacific. Seasonal samples were collected with 0.06 mm mesh nets from five discrete layers between the surface and 2,000 m depth at seven occasions (March, May, June, August and October 2002, December 2003 and February 2004). The depth of occurrence of major populations of each species differed by species; the surface–250 m for T. borealis, 250–1,000 m for T. canadensis, 250–500 m for O. grossa and 500–1,000 m for O. parila. The ontogenetic vertical migration characterized by deeper occurrence of early and late copepodid stages, and shallower occurrence of middle copepodid stages was observed in T. canadensis and O. parila. Of the four oncaeid copepods, almost all copepodid stages occurred throughout the study period, suggesting that their reproduction continues throughout the year in the region. Nevertheless, a clear developmental sequence of stage-to-stage was traced for T. canadensis and O. grossa copepodids, implying their generation time to be 1 year. For T. borealis and O. parila copepodids, no clear seasonal succession was observed thus estimation of their generation time was uncertain. The present comprehensive results of vertical distribution and life cycle features for T. borealis, T. canadensis, O. grossa and O. parila are compared with the few published data on oncaeid species distributing in high latitude seas.
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DOI:
10.1016/s0967-0637(02)00008-0
发表时间:
2002-06
期刊:
--
影响因子:
--
作者:
A. Yamaguchi;Yuji Watanabe;H. Ishida;Takashi Harimoto;K. Furusawa;Shinya Suzuki;J. Ishizaka;T. Ikeda;M. Takahashi
通讯作者:
A. Yamaguchi;Yuji Watanabe;H. Ishida;Takashi Harimoto;K. Furusawa;Shinya Suzuki;J. Ishizaka;T. Ikeda;M. Takahashi
DOI:
--
发表时间:
2004
期刊:
Marine Ecology Progress Series 270
影响因子:
--
作者:
Padomavati;G.;Ikeda;T.;Yamaguchi;A.
通讯作者:
A.
DOI:
--
发表时间:
2004
期刊:
Marine Biology 145
影响因子:
--
作者:
Nishibe;Y.;Ikeda;T.
通讯作者:
T.
DOI:
--
发表时间:
2004
期刊:
Mar.Biol. 145
影响因子:
--
作者:
Nishibe;Y;T.Ikeda
通讯作者:
T.Ikeda
DOI:
--
发表时间:
2005
期刊:
Marine Biology 146
影响因子:
--
作者:
Atsushi Yamaguchi;Satoko Shoden
通讯作者:
Satoko Shoden