Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia
Abstract Invertebrates in polar and deep‐sea environments that have complex life histories are exposed to unique environmental conditions that may favor non‐pelagic development and K ‐strategist reproduction. Although many polar species follow this strategy, the numerically most abundant species ten...
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crwiley:10.1111/ivb.12332 2024-06-02T08:01:28+00:00 Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia Meyer‐Kaiser, Kirstin S. Plowman, Caitlin Q. Soltwedel, Thomas Andrew W. Mellon Foundation Woods Hole Oceanographic Institution 2021 http://dx.doi.org/10.1111/ivb.12332 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ivb.12332 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ivb.12332 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Invertebrate Biology volume 140, issue 2 ISSN 1077-8306 1744-7410 journal-article 2021 crwiley https://doi.org/10.1111/ivb.12332 2024-05-03T11:26:07Z Abstract Invertebrates in polar and deep‐sea environments that have complex life histories are exposed to unique environmental conditions that may favor non‐pelagic development and K ‐strategist reproduction. Although many polar species follow this strategy, the numerically most abundant species tend to have more r ‐strategist life‐history characteristics. We deployed artificial substrata over 3 years in the Arctic deep sea and collected hundreds of specimens of the athecate hydroid Bouillonia cornucopia . While this species has previously been described as rare, we report dense, patchy recruitment on artificial substrata, suggesting that B. cornucopia is highly opportunistic. This species has rapid growth compared to other sessile invertebrates in the study area, high fecundity, and continuous reproduction—all characteristics of an r ‐selected life history. The species’ gonophores are simple, lacking an obvious spadix or radial canals. We observed nurse cells in histological sections of female gonophores, but no male gonophores were observed. Gonophores break away from the blastostyles in mature specimens and appear to have fertilization envelopes, suggesting that each gonophore is composed of a single oocyte and that embryological development occurs in the water column. Hydroids are typically the first invertebrates to recruit to substrata in the Arctic but are easily overgrown. The opportunistic life histories of B. cornucopia and other hydroids may be adaptive for maintaining populations in the face of high mortality. Our study demonstrates the utility of artificial substrata for collections of otherwise rare opportunistic species. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Invertebrate Biology 140 2 |
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Wiley Online Library |
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English |
description |
Abstract Invertebrates in polar and deep‐sea environments that have complex life histories are exposed to unique environmental conditions that may favor non‐pelagic development and K ‐strategist reproduction. Although many polar species follow this strategy, the numerically most abundant species tend to have more r ‐strategist life‐history characteristics. We deployed artificial substrata over 3 years in the Arctic deep sea and collected hundreds of specimens of the athecate hydroid Bouillonia cornucopia . While this species has previously been described as rare, we report dense, patchy recruitment on artificial substrata, suggesting that B. cornucopia is highly opportunistic. This species has rapid growth compared to other sessile invertebrates in the study area, high fecundity, and continuous reproduction—all characteristics of an r ‐selected life history. The species’ gonophores are simple, lacking an obvious spadix or radial canals. We observed nurse cells in histological sections of female gonophores, but no male gonophores were observed. Gonophores break away from the blastostyles in mature specimens and appear to have fertilization envelopes, suggesting that each gonophore is composed of a single oocyte and that embryological development occurs in the water column. Hydroids are typically the first invertebrates to recruit to substrata in the Arctic but are easily overgrown. The opportunistic life histories of B. cornucopia and other hydroids may be adaptive for maintaining populations in the face of high mortality. Our study demonstrates the utility of artificial substrata for collections of otherwise rare opportunistic species. |
author2 |
Andrew W. Mellon Foundation Woods Hole Oceanographic Institution |
format |
Article in Journal/Newspaper |
author |
Meyer‐Kaiser, Kirstin S. Plowman, Caitlin Q. Soltwedel, Thomas |
spellingShingle |
Meyer‐Kaiser, Kirstin S. Plowman, Caitlin Q. Soltwedel, Thomas Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia |
author_facet |
Meyer‐Kaiser, Kirstin S. Plowman, Caitlin Q. Soltwedel, Thomas |
author_sort |
Meyer‐Kaiser, Kirstin S. |
title |
Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia |
title_short |
Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia |
title_full |
Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia |
title_fullStr |
Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia |
title_full_unstemmed |
Reproduction, recruitment, and growth of the Arctic deep‐sea hydroid Bouillonia cornucopia |
title_sort |
reproduction, recruitment, and growth of the arctic deep‐sea hydroid bouillonia cornucopia |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/ivb.12332 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ivb.12332 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ivb.12332 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Invertebrate Biology volume 140, issue 2 ISSN 1077-8306 1744-7410 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/ivb.12332 |
container_title |
Invertebrate Biology |
container_volume |
140 |
container_issue |
2 |
_version_ |
1800745847133044736 |