Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters.
We investigated the ontogeny of behavior during the transition in Euphausia superba from dispersed solitary larvae to clumped swarms and schools of furciliae. We directly observed behavior of krill larvae in the Gerlache Strait, Antarctica, with open‐ocean SCUBA techniques. In the absence of ice, is...
Published in: | Limnology and Oceanography |
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Language: | English |
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1989
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crwiley:10.4319/lo.1989.34.2.0451 2023-12-03T10:12:53+01:00 Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters. Hamner, W. M. Hamner, P. P. Obst, B. S. Carleton, J. H. 1989 http://dx.doi.org/10.4319/lo.1989.34.2.0451 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1989.34.2.0451 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1989.34.2.0451 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 34, issue 2, page 451-456 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 1989 crwiley https://doi.org/10.4319/lo.1989.34.2.0451 2023-11-09T13:32:02Z We investigated the ontogeny of behavior during the transition in Euphausia superba from dispersed solitary larvae to clumped swarms and schools of furciliae. We directly observed behavior of krill larvae in the Gerlache Strait, Antarctica, with open‐ocean SCUBA techniques. In the absence of ice, isolated furciliae occurred at the surface at a density of 0.003 m −3 . In the presence of ice, density of isolates was 10 2 times higher and density of furciliae in schools was 10 9 times higher than in open water. Larvae first exhibited schooling behavior at furcilia IV–V(body length 1 cm). Furcilia V larvae segregated by size in immediately adjacent schools, with highly significant differences in body lengths of as little as 0.5 mm. Late stage furciliae moved the thoracic basket in the same way that adults filter phytoplankton, and furciliae fed like adults on epontic ice algae. For larval krill in the Gerlache Strait, ice provided concentrated algal food and protection from predators and facilitated aggregation and formation of swarms of nonpolarized individuals and of small, ice‐oriented schools that contained 10 2 −10 4 individuals per school. Article in Journal/Newspaper Antarc* Antarctic Antarctica Euphausia superba ice algae Wiley Online Library (via Crossref) Antarctic Gerlache ENVELOPE(99.033,99.033,-66.500,-66.500) Gerlache Strait ENVELOPE(-62.333,-62.333,-64.500,-64.500) Limnology and Oceanography 34 2 451 456 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
spellingShingle |
Aquatic Science Oceanography Hamner, W. M. Hamner, P. P. Obst, B. S. Carleton, J. H. Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters. |
topic_facet |
Aquatic Science Oceanography |
description |
We investigated the ontogeny of behavior during the transition in Euphausia superba from dispersed solitary larvae to clumped swarms and schools of furciliae. We directly observed behavior of krill larvae in the Gerlache Strait, Antarctica, with open‐ocean SCUBA techniques. In the absence of ice, isolated furciliae occurred at the surface at a density of 0.003 m −3 . In the presence of ice, density of isolates was 10 2 times higher and density of furciliae in schools was 10 9 times higher than in open water. Larvae first exhibited schooling behavior at furcilia IV–V(body length 1 cm). Furcilia V larvae segregated by size in immediately adjacent schools, with highly significant differences in body lengths of as little as 0.5 mm. Late stage furciliae moved the thoracic basket in the same way that adults filter phytoplankton, and furciliae fed like adults on epontic ice algae. For larval krill in the Gerlache Strait, ice provided concentrated algal food and protection from predators and facilitated aggregation and formation of swarms of nonpolarized individuals and of small, ice‐oriented schools that contained 10 2 −10 4 individuals per school. |
format |
Article in Journal/Newspaper |
author |
Hamner, W. M. Hamner, P. P. Obst, B. S. Carleton, J. H. |
author_facet |
Hamner, W. M. Hamner, P. P. Obst, B. S. Carleton, J. H. |
author_sort |
Hamner, W. M. |
title |
Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters. |
title_short |
Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters. |
title_full |
Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters. |
title_fullStr |
Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters. |
title_full_unstemmed |
Field observations on the ontogeny of schooling of Euphausia superba furciliae and its relationship to ice in Antarctic waters. |
title_sort |
field observations on the ontogeny of schooling of euphausia superba furciliae and its relationship to ice in antarctic waters. |
publisher |
Wiley |
publishDate |
1989 |
url |
http://dx.doi.org/10.4319/lo.1989.34.2.0451 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1989.34.2.0451 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1989.34.2.0451 |
long_lat |
ENVELOPE(99.033,99.033,-66.500,-66.500) ENVELOPE(-62.333,-62.333,-64.500,-64.500) |
geographic |
Antarctic Gerlache Gerlache Strait |
geographic_facet |
Antarctic Gerlache Gerlache Strait |
genre |
Antarc* Antarctic Antarctica Euphausia superba ice algae |
genre_facet |
Antarc* Antarctic Antarctica Euphausia superba ice algae |
op_source |
Limnology and Oceanography volume 34, issue 2, page 451-456 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1989.34.2.0451 |
container_title |
Limnology and Oceanography |
container_volume |
34 |
container_issue |
2 |
container_start_page |
451 |
op_container_end_page |
456 |
_version_ |
1784259511709597696 |