Growth, development and distribution of the euphausiids Thysanoessa raschi (M. Sars) and Thysanoessa inermis (Kroyer) in the southeastern Bering Sea

Sharon L Smith

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Thysanoessa inermis was the dominant euphausiid species observed over the outer shelf region; it began spawning in early April while T. raschi dominated the euphausiids over the middle shelf and began spawning in mid or late May. The seasonal progression in spawning followed the seasonal development of temperature, but spawning did not begin earlier in 1981 which was a warmer year than 1980. Average egg production of T. raschi ranged from 3.4-3.8% dry body weight of the female per day during the first three days after capture. Secondary production estimates for T. raschi females ranged from 4.2-5.2% dry body weight per day in 1980 and 5.9-6.0% dry body weight per day in 1981. A sharp decline in the abundance of adolescent and adult euphausiids over the middle shelf during the spring bloom period when food appeared to be abundant suggests that predation effectively controls the euphausiid population. -from Author

Original languageEnglish
Pages (from-to)461-478
Number of pages18
JournalPolar Research
Volume10
Issue number2
StatePublished - Dec 1 1991
Externally publishedYes

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growth and development
spawning
secondary production
egg production
algal bloom
predation
Temperature
food
distribution
sea
temperature

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Oceanography
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Growth, development and distribution of the euphausiids Thysanoessa raschi (M. Sars) and Thysanoessa inermis (Kroyer) in the southeastern Bering Sea. / Smith, Sharon L.

In: Polar Research, Vol. 10, No. 2, 01.12.1991, p. 461-478.

Research output: Contribution to journalArticle

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