Convergence in life-history traits in migratory deep-water squid and fish
Abstract Arkhipkin, A. I., and Laptikhovsky, V. V. 2010. Convergence in life-history traits in migratory deep-water squid and fish. – ICES Journal of Marine Science, 67: 1444–1451. The life-history traits of two species of nektonic squid, Onykia ingens and Gonatus antarcticus, and Patagonian toothfi...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsq103 http://academic.oup.com/icesjms/article-pdf/67/7/1444/29138353/fsq103.pdf |
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croxfordunivpr:10.1093/icesjms/fsq103 2024-09-15T17:40:42+00:00 Convergence in life-history traits in migratory deep-water squid and fish Arkhipkin, Alexander I. Laptikhovsky, Vladimir V. 2010 http://dx.doi.org/10.1093/icesjms/fsq103 http://academic.oup.com/icesjms/article-pdf/67/7/1444/29138353/fsq103.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 67, issue 7, page 1444-1451 ISSN 1095-9289 1054-3139 journal-article 2010 croxfordunivpr https://doi.org/10.1093/icesjms/fsq103 2024-09-03T04:10:01Z Abstract Arkhipkin, A. I., and Laptikhovsky, V. V. 2010. Convergence in life-history traits in migratory deep-water squid and fish. – ICES Journal of Marine Science, 67: 1444–1451. The life-history traits of two species of nektonic squid, Onykia ingens and Gonatus antarcticus, and Patagonian toothfish Dissostichus eleginoides, all from the Southwest Atlantic, are reviewed to reveal the extent to which their life cycles have converged. All three follow similar ontogenetic migration, with spawning and egg development in meso-bathypelagic water over the continental slope. Larvae and small juveniles ascend to epipelagic water to feed and grow near the slope. Juveniles and immature adults migrate to the shelf and use it as their feeding grounds. After this period of fast growth on the shelf, the adults descend back to deep water to spawn. The potential advantages that such a life cycle gives to migratory deep-water animals over obligate bathypelagic and benthic fauna are discussed. The most likely cause of ontogenetic migration of juvenile deep-water organisms to the shelf, with the resulting fast growth, is to increase individual fecundity during the adult deep-water phase. Escape from predation and resource utilization at the next trophic level are also examined, but found to be less plausible explanations. Larger, mature animals have higher fecundity, bigger eggs, and larger, better-developed hatchlings, all of which enhance the survival rates of the species at the early stages of their ontogenesis. Article in Journal/Newspaper Antarc* antarcticus Onykia ingens Patagonian Toothfish Oxford University Press ICES Journal of Marine Science 67 7 1444 1451 |
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Oxford University Press |
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description |
Abstract Arkhipkin, A. I., and Laptikhovsky, V. V. 2010. Convergence in life-history traits in migratory deep-water squid and fish. – ICES Journal of Marine Science, 67: 1444–1451. The life-history traits of two species of nektonic squid, Onykia ingens and Gonatus antarcticus, and Patagonian toothfish Dissostichus eleginoides, all from the Southwest Atlantic, are reviewed to reveal the extent to which their life cycles have converged. All three follow similar ontogenetic migration, with spawning and egg development in meso-bathypelagic water over the continental slope. Larvae and small juveniles ascend to epipelagic water to feed and grow near the slope. Juveniles and immature adults migrate to the shelf and use it as their feeding grounds. After this period of fast growth on the shelf, the adults descend back to deep water to spawn. The potential advantages that such a life cycle gives to migratory deep-water animals over obligate bathypelagic and benthic fauna are discussed. The most likely cause of ontogenetic migration of juvenile deep-water organisms to the shelf, with the resulting fast growth, is to increase individual fecundity during the adult deep-water phase. Escape from predation and resource utilization at the next trophic level are also examined, but found to be less plausible explanations. Larger, mature animals have higher fecundity, bigger eggs, and larger, better-developed hatchlings, all of which enhance the survival rates of the species at the early stages of their ontogenesis. |
format |
Article in Journal/Newspaper |
author |
Arkhipkin, Alexander I. Laptikhovsky, Vladimir V. |
spellingShingle |
Arkhipkin, Alexander I. Laptikhovsky, Vladimir V. Convergence in life-history traits in migratory deep-water squid and fish |
author_facet |
Arkhipkin, Alexander I. Laptikhovsky, Vladimir V. |
author_sort |
Arkhipkin, Alexander I. |
title |
Convergence in life-history traits in migratory deep-water squid and fish |
title_short |
Convergence in life-history traits in migratory deep-water squid and fish |
title_full |
Convergence in life-history traits in migratory deep-water squid and fish |
title_fullStr |
Convergence in life-history traits in migratory deep-water squid and fish |
title_full_unstemmed |
Convergence in life-history traits in migratory deep-water squid and fish |
title_sort |
convergence in life-history traits in migratory deep-water squid and fish |
publisher |
Oxford University Press (OUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1093/icesjms/fsq103 http://academic.oup.com/icesjms/article-pdf/67/7/1444/29138353/fsq103.pdf |
genre |
Antarc* antarcticus Onykia ingens Patagonian Toothfish |
genre_facet |
Antarc* antarcticus Onykia ingens Patagonian Toothfish |
op_source |
ICES Journal of Marine Science volume 67, issue 7, page 1444-1451 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsq103 |
container_title |
ICES Journal of Marine Science |
container_volume |
67 |
container_issue |
7 |
container_start_page |
1444 |
op_container_end_page |
1451 |
_version_ |
1810486727944437760 |