LONGEVITY OF THE ANTARCTIC KRILL (EUPHAUSIA SUPERBA DANA) BASED ON A LABORATORY EXPERIMENT (Ninth Symposium on Polar Biology)

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概要

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• Laboratory observations over a 6-year period were made on the intermoult period (IP), changes in body length (BL) and maturity of 3 female and 3 male krill brought from Antarctic water to Australia. While the IP was stable over the period (range of individual means; 25.6-29.6 days), both BL and maturity changed greatly from one specimen to the next. Reversible modes shown in BL and maturity suggest that neither parameter is a good indicator of chronological age in this animal. Considering the age of krill at the beginning of this experiment (least 1-2 year old) krill lived for 7-8 years, which is considerably longer than the previously hypothesized 2-5 year life span of this animal.

• 国立極地研究所の論文

著者

• Ikeda Tsutomu

  Antarctic Division Department Of Science Channel Highway:(present Address)japan Sea Regional Fisheri

• THOMAS P.

  Antarctic Division, Department of Science, Channel Highway

• Thomas P.

  Antarctic Division Department Of Science Channel Highway

関連論文

• LONGEVITY OF THE ANTARCTIC KRILL (EUPHAUSIA SUPERBA DANA) BASED ON A LABORATORY EXPERIMENT (Ninth Symposium on Polar Biology)
• THELYCUM AND SPERMATOPHORE STRUCTURE IN THE ANTARCTIC EUPHAUSIIDS EUPHAUSIA SUPERBA AND E. CRYSTALLOROPHIAS (Ninth Symposium on Polar Biology)

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