Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica

Metadata record for data from ASAC Project 229 See the link below for public details on this project.

From the abstracts of some of the referenced papers:

In January 1985 a net sampling survey was carried out on the distribution and abundance of euphausiid larvae in the Prydz Bay region. Euphausia superba occurred in low abundance, probably due to sampling preceding the main spawning period. Thysanoessa macrura occurred throughout the study area in consistently high abundance. Euphausia crystallorophias as marginally more abundant within its restricted range. Distinct north-south variations in larval age and development stages of T. macrura were observed indicating regional differences in spawning. Euphausia frigida was mainly confined to the upper 200 m of the Antarctic Circumpolar Current. Larvae originating on the shelf moved rapidly west in the East Wind drift. E. crystallorophias had the same westward dispersion, but some larvae appeared to return eastward via the Prydz Bay Gyre and remain in the region. The data indicate that most E. superba larvae, providing they survive injurious cold temperature and food deprivation, will leave the area, suggests that Prydz Bay krill may not be a self sustaining stock.

#####

This paper presents results of net sampling carried out in four marine science cruises between 1981 and 1985, in the Prydz Bay region of Antarctica by the Australian Antarctic Division. Krill exhibited a patchy distribution and overall low abundance. The majority of sampling sites in January 1985 returned no post-larval krill or densities of less than 1 individual per 1000 cubic metres. The estimated mean abundance of E. superba in January 1985 was 6 indivduals or 2 g (wet wt.) per 1000 cubic metres integrated for the upper 200m of the water column which represented 3.4% of the total zooplankton biomass. No more than five years-groups, including the larvae, were observed in Prydz Bay, with mean lengths of groups 1+, 2+, 3+ and 4+ being 24, 38, 46 and 53 mm (standard 1), respectively in the middle of January. A high proportion of naupliar stages observed in January 1985 indicated that spawning in Prydz Bay begins in January and examination of adult maturation showed that the spawning continues at least to March.

#####

Sixty female Antarctic krill (Euphausia superba Dana) spawned in shipboard experiments and the interval between egg-laying and ecdysis was noted. The number of eggs laid per female ranged from 263-3662, most females produced only one batch of eggs before moulting, and the post spawn ovaries of all females contained few, if any, mature oocytes. As reported in other studies, the total number of eggs produced per female was not well correlated with body size. Females appeared to spawn at all times during the moulting cycle and although no diurnal rhythm in spawning was observed, moulting occurred mainly at night-time despite the animals being kept in near-constant darkness. No evidence of synchronous moulting was detected.

#####

Data from this project were collected on five Antarctic voyages:

HIMS - Heard Island Marine Science - 1990-05-04 - 1990-07-01 AAMBER II - Australian Antarctic Marine Biological Ecosystem Research II - 1991-01-3 - 1991-03-19 FISHOG - Fish and Oceanography - 1992-01-09 - 1992-03-27 KROCK - Krill and Rocks - 1993-01-05 - 1993-03-09 BROKE - Baseline Research on Oceanography, Krill and the Environment - 1996-01-02 - 1996-03-31

All data are available in the download file.

Identification info

Alternate title: Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica

Date (Publication): 2012-04-05

Edition: 1

Citation identifier

Dataset DOI

Title: Information and documentation - Digital object identifier system

Date (Publication): 2012-04-23

Citation identifier: ISO 26324:2012

Citation identifier: doi:10.4225/15/5747A0E68E675

Originator

Hosie, G. and Nicol, S.

Publisher

Australian Antarctic Division

Principal investigator

HOSIE, GRAHAM

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

Principal investigator

NICOL, STEPHEN

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

Collaborator

HOSIE, GRAHAM

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

Collaborator

NICOL, STEPHEN

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

Name: CAASM Metadata

Website: https://data.aad.gov.au/metadata/records/ASAC_229

Status: Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

+61 3 6232 3244

+61 3 6232 3351 (facsimile)

Topic category

Biota
Oceans

Extent

Description: Temporal Coverage

Temporal extent

TimePeriod: 1990-05-04 1996-03-31

Title: Accumulation of fluorescent age pigments in a laboratory population of Antarctic krill Euphausia superba Dana.

Date (Publication): 1991

Citation identifier: 146

Author

Nicol S., Stolp M., Hosie G.W.

Name: Journal of Experimental Marine Biology and Ecology

Page: 153-161

Title: Distribution and abundance of euphausiid larvae in the Prydz Bay region, Antarctica.

Date (Publication): 1991

Citation identifier: 3

Author

Hosie G.W.

Name: Antarctic Science

Issue identification: 2

Page: 167-180

Title: Mesoscale distribution patterns of macrozooplankton communities in Prydz Bay, Antarctica - January to February 1991.

Date (Publication): 1994

Citation identifier: 106

Author

Hosie G.W., Cochran T.G.

Name: Marine Ecology Progress Series

Page: 21-39

Title: The macrozooplankton communities in the Prydz Bay region, Antarctica. El-Sayed S.Z. Southern Ocean Ecology.

Date (Publication): 1994

Author

Hosie G.W.

Name: The BIOMASS Perspective

Page: 93-123

Title: Multivariate analyses of the macrozooplankton community and euphausiid larval ecology in the Prydz Bay region, Antarctica.

Date (Publication): 1994

Citation identifier: 137

Author

Hosie G.W.

Name: ANARE Reports

Page: 209

Title: A super swarm of krill in Prydz Bay, Antarctica.

Date (Publication): 1989

Citation identifier: 58

Author

Higginbottom I., Hosie G.W.

Name: Marine Ecology Progress Series

Page: 197-203

Title: Age structure of Antarctic krill (Euphausia superba) populations as determined by age-pigment analysis and by size-frequency analysis.

Date (Publication): 1991

Author

Nicol S., Stolp M., Hosie G.W.

Name: Memoirs of the Queensland Museum

Issue identification: 31

Page: 394

Title: Distribution, abundance and population structure of the Antarctic krill (Euphausia superba Dana) in the Prydz Bay region, Antarctica.

Date (Publication): 1988

Citation identifier: 8

Author

Hosie G.W., Ikeda T., Stolp M.

Name: Polar Biology

Page: 213-224

Title: Apparent independence of the spawning and moulting cycles in female Antarctic krill (Euphausia superba Dana).

Date (Publication): 1989

Citation identifier: 9

Author

Nicol S.

Name: Polar Biology

Page: 371-375

Title: Who's counting on krill?

Date (Publication): 1989

Citation identifier: 1690

Author

Nicol S.

Name: New Scientist

Page: 20-23

Title: Krill and zooplankton in the western Prydz Bay region, September-November 1985.

Date (Publication): 1989

Citation identifier: 2

Author

Hosie G.W., Stolp M.

Name: Proceedings of the NIPR Symposium on Polar Biology

Page: 34-45

Title: Euphausiid larvae collected from the Prydz Bay region during the Nella Dan cruise (SIBEX I).

Date (Publication): 1986

Citation identifier: 40

Author

Hosie G.W., Kirkwood J.M.

Name: Memoirs of National Institute of Polar Research Special Issue

Page: 110-116

Title: Spatio-temporal variability in life cycle strategy of four pelagic Antarctic copepods: Rhincalanus gigas, Calanoides acutus, Calanus propinquus and Metridia gerlachei.

Date (Publication): 2002

Citation identifier: 15

Author

Chiba S., Ishimaru T., Hosie G.W., Fukuchi M.

Name: Polar Biosciences

Page: 27-44

Title: SIBEX II cruise krill/zooplankton sampling data.

Date (Publication): 1986

Citation identifier: 32

Author

Ikeda T., Hosie G., Stolp M.

Name: ANARE Research Notes

Page: 70

Title: ADBEX III cruise krill/zooplankton sampling data.

Date (Publication): 1987

Citation identifier: 57

Author

Hosie G.W., Ikeda T., Stolp M., Williams R.

Name: ANARE Research Notes

Page: 34

Title: AAMBER 86/87 cruise krill/zooplankton sampling data.

Date (Publication): 1991

Citation identifier: 79

Author

Hosie G.W., Kitchener J., Stolp M., Cochran T.G., Williams R.

Name: ANARE Research Notes

Page: 54

Title: Multivariate Analyses of the Macrozooplankton Community and Euphausiid Larval Ecology in the Prydz Bay Region, Antarctica

Date (Publication): 1992

Citation identifier: 137

Author

Hosie G.W.

Publisher

Australian Government Publishing Service, 1998

Name: ANARE Reports

Page: 209

ISBN: 064220005X, 9780642200051