Abundance, vertical distribution and life cycle patterns of the hydromedusa Aglantha digitale in the Oyashio region, western subarctic Pacific

Daisuke Takahashi, Tsutomu Ikeda

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Analyses of monthly depth-stratified (0-2000 m) sampling data in the Oyashio region have revealed that Aglantha digitale is distributed largely in the upper 250 m throughout the year. Population biomass ranged from < 30 mg DW m-2(January) to 1575 mg DW m-2(August), with an annual mean of 186 mg DW m-2. Judging from seasonal sequences of the population structure, the generation length of A. digitale is considered to be one year with their spawning season in June-September, which is consistent with that observed at Station P in the eastern subarctic Pacific.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalPlankton and Benthos Research
Volume1
Issue number2
DOIs
Publication statusPublished - 2006

Keywords

  • Aglantha digitale
  • North Pacific
  • Oyashio
  • life cycle
  • vertical distribution

ASJC Scopus subject areas

  • Oceanography
  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

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