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Corpus Systématique Animale

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Cadmium and zinc concentrations in zooplankton in the subarctic region of the North Pacific

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Springer (journals)
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  • Tsuneyasu Hamanaka 1
  • Tokimi Tsujita 2
  • 1) Research Institute of North Pacific Fisheries, Faculty of Fisheries, Hokkaido University, 041, Hakodate, Hokkaido, Japan
  • 2) College of Marine Science and Technology, Tokai University, 1000 Orito, Shimizu, 424, Shizuoka, Japan

Cadmium and zinc concentrations were determined in 10 species of pelagic zooplankton collected in the northern North Pacific, the Bering Sea, the Okhotsk Sea and off Hokkaidô, during the summers of 1974–1976. The mean cadmium contents in euphausiids, copepods, and amphipods were 1.16µg/g dry wt (range: 0.36–2.17µg/g), 6.63µg/g (1.66–14.55µg/g), and 8.28µg/g (2.83–14.50µg/g), respectively. Cadmium in euphausiids was significantly lower in concentration than in the other two crustacean groups. The difference in cadmium levels among the crustacean groups is discussed on the basis of feeding habits and physiological characteristics of the zooplankton. Zinc levels in the crustaceans were similar, with values around 100µg/g (range: 59–195?g/g). Both cadmium and zinc concentrations in euphausiids taken from coastal waters off Hokkaidô were significantly higher than those from the Bering Sea and the northern North Pacific. This trend may reflect coastal pollution rather than characteristics of the species.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - General Earth and Planetary Sciences
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Earth-Surface Processes
  • 1 - Physical Sciences ; 2 - Engineering ; 3 - General Engineering
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Soil Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - General Environmental Science
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Journal of the Oceanographical Society of Japan

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