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Record #173884:

Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data / K. Taki, T. Hayashi, M. Naganobu.

Title: Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data / K. Taki, T. Hayashi, M. Naganobu.
Author(s): Taki, K.
Hayashi, T.
Naganobu, M.
Date: 2005.
In: CCAMLR Science. (2005.), Vol. 12 (2005)
Abstract: Examines seasonal variation in vertical migration and aggregation of krill associated with daylight phase for waters around South Shetland Islands (SS), South Orkney Islands (SO) and South Georgia (SG) using logbook data from 1980 to 2003. Average trawling depth showed marked diurnal change during summer and winter in SS and SO, tending to be shallower during austral summer and early autumn, deepening gradually from autumn and reaching maximum depth in winter in Scotia Sea before shifting to shallower depths again in early spring. Average catch-per-unit-effort was highest during day and lowest at night in autumn and winter in each area, but lower during the day in summer in SS and SO. Results suggest that seasonal and diurnal changes in vertical migration and aggregation of krill are closely related to feeding and spawning ecology and avoidance of visual predators.
Notes:

CCAMLR Science. Vol. 12 :163-172 (2005).

Keywords: 639.2 -- Fisheries.
639.2.001 -- Fisheries research.
639.281.2 -- Krill industry.
595.383.1 -- Euphausiacea.
591.5 -- Animal behaviour.
591.543.4 -- Animals, seasonal changes.
591.544 -- Animals, vertical migration.
H2 -- Zoology: invertebrates.
(*7) -- Antarctic regions.
(*723) -- South Georgia and Shag Rocks.
(*725) -- South Orkney Islands.
(*726.1) -- South Shetland Islands.
(*80) -- Southern Ocean.
(*82) -- South Atlantic Ocean.
(*824) -- Scotia Sea.
SPRI record no.: 173884

MARCXML

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100 1# ‡aTaki, K.
245 10 ‡aCharacteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data /‡cK. Taki, T. Hayashi, M. Naganobu.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2005.
300 ## ‡ap. 163-172 :‡bdiags., table.
500 ## ‡aCCAMLR Science. Vol. 12 :163-172 (2005).
520 3# ‡aExamines seasonal variation in vertical migration and aggregation of krill associated with daylight phase for waters around South Shetland Islands (SS), South Orkney Islands (SO) and South Georgia (SG) using logbook data from 1980 to 2003. Average trawling depth showed marked diurnal change during summer and winter in SS and SO, tending to be shallower during austral summer and early autumn, deepening gradually from autumn and reaching maximum depth in winter in Scotia Sea before shifting to shallower depths again in early spring. Average catch-per-unit-effort was highest during day and lowest at night in autumn and winter in each area, but lower during the day in summer in SS and SO. Results suggest that seasonal and diurnal changes in vertical migration and aggregation of krill are closely related to feeding and spawning ecology and avoidance of visual predators.
650 07 ‡a639.2 -- Fisheries.‡2udc
650 07 ‡a639.2.001 -- Fisheries research.‡2udc
650 07 ‡a639.281.2 -- Krill industry.‡2udc
650 07 ‡a595.383.1 -- Euphausiacea.‡2udc
650 07 ‡a591.5 -- Animal behaviour.‡2udc
650 07 ‡a591.543.4 -- Animals, seasonal changes.‡2udc
650 07 ‡a591.544 -- Animals, vertical migration.‡2udc
650 07 ‡aH2 -- Zoology: invertebrates.‡2local
651 #7 ‡a(*7) -- Antarctic regions.‡2udc
651 #7 ‡a(*723) -- South Georgia and Shag Rocks.‡2udc
651 #7 ‡a(*725) -- South Orkney Islands.‡2udc
651 #7 ‡a(*726.1) -- South Shetland Islands.‡2udc
651 #7 ‡a(*80) -- Southern Ocean.‡2udc
651 #7 ‡a(*82) -- South Atlantic Ocean.‡2udc
651 #7 ‡a(*824) -- Scotia Sea.‡2udc
700 1# ‡aHayashi, T.
700 1# ‡aNaganobu, M.
773 0# ‡7nnas ‡tCCAMLR Science. ‡gVol. 12 (2005) ‡wSPRI-131147
916 ## ‡a2006/02/21 -- HS
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20220928 ‡bHS