Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata
Harmeria scutulata , a cheilostome bryozoan with a circum-Arctic distribution, is an important component of intertidal and shallow subtidal rock communities. In terms of numerical abundance, H. scutulata can reach over 50% of total individuals within Arctic bryozoan assemblages. It is an annual, fas...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2006
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0025315406014330 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315406014330 |
id |
crcambridgeupr:10.1017/s0025315406014330 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0025315406014330 2024-03-03T08:41:30+00:00 Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata Kuklinski, Piotr Taylor, Paul D. 2006 http://dx.doi.org/10.1017/s0025315406014330 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315406014330 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 86, issue 6, page 1305-1314 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2006 crcambridgeupr https://doi.org/10.1017/s0025315406014330 2024-02-08T08:38:21Z Harmeria scutulata , a cheilostome bryozoan with a circum-Arctic distribution, is an important component of intertidal and shallow subtidal rock communities. In terms of numerical abundance, H. scutulata can reach over 50% of total individuals within Arctic bryozoan assemblages. It is an annual, fast-growing species that loses over 70% of interactions for space with other organisms. Uniquely for a bryozoan, the subcircular colonies have large zooids at the centre ringed by a marginal zone of up to six generations of small zooids. This pattern is shown here to be due to polymorphism, reflecting a functional differentiation between large, feeding zooids (autozooids) and small, non-feeding zooids that brood embryos (gonozooids). The switch from the budding of autozooids to gonozooids occurs more or less simultaneously around the circumferential growing edge of the colony and is irreversible. Colonies apparently produce embryos only near the end of the growing season. Strong wave action and/or ice scour during the winter months destroys most of the colony but it is inferred that some of the gonozooids, which are more thickly calcified than the autozooids, overwinter, surviving into the spring and releasing their larvae to found a new generation of colonies. A formal systematic redescription of H. scutulata is given. Article in Journal/Newspaper Arctic Cambridge University Press Arctic Journal of the Marine Biological Association of the United Kingdom 86 6 1305 1314 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Kuklinski, Piotr Taylor, Paul D. Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata |
topic_facet |
Aquatic Science |
description |
Harmeria scutulata , a cheilostome bryozoan with a circum-Arctic distribution, is an important component of intertidal and shallow subtidal rock communities. In terms of numerical abundance, H. scutulata can reach over 50% of total individuals within Arctic bryozoan assemblages. It is an annual, fast-growing species that loses over 70% of interactions for space with other organisms. Uniquely for a bryozoan, the subcircular colonies have large zooids at the centre ringed by a marginal zone of up to six generations of small zooids. This pattern is shown here to be due to polymorphism, reflecting a functional differentiation between large, feeding zooids (autozooids) and small, non-feeding zooids that brood embryos (gonozooids). The switch from the budding of autozooids to gonozooids occurs more or less simultaneously around the circumferential growing edge of the colony and is irreversible. Colonies apparently produce embryos only near the end of the growing season. Strong wave action and/or ice scour during the winter months destroys most of the colony but it is inferred that some of the gonozooids, which are more thickly calcified than the autozooids, overwinter, surviving into the spring and releasing their larvae to found a new generation of colonies. A formal systematic redescription of H. scutulata is given. |
format |
Article in Journal/Newspaper |
author |
Kuklinski, Piotr Taylor, Paul D. |
author_facet |
Kuklinski, Piotr Taylor, Paul D. |
author_sort |
Kuklinski, Piotr |
title |
Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata |
title_short |
Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata |
title_full |
Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata |
title_fullStr |
Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata |
title_full_unstemmed |
Unique life history strategy in a successful Arctic bryozoan, Harmeria scutulata |
title_sort |
unique life history strategy in a successful arctic bryozoan, harmeria scutulata |
publisher |
Cambridge University Press (CUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1017/s0025315406014330 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315406014330 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 86, issue 6, page 1305-1314 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315406014330 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
86 |
container_issue |
6 |
container_start_page |
1305 |
op_container_end_page |
1314 |
_version_ |
1792497217441890304 |