Chemical defenses against diatom fouling in Antarctic marine sponges
Antarctic sponges are commonly fouled by diatoms, sometimes so heavily as to occlude pores employed in filter feeding and respiration. This fouling becomes heavier during the annual summer microalgal bloom. Polar and non‐polar extracts of eight species of marine sponges from McMurdo Sound, Antarctic...
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Language: | English |
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Taylor & Francis
2000
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Online Access: | https://oceanrep.geomar.de/id/eprint/46226/ https://oceanrep.geomar.de/id/eprint/46226/1/20190326143727.pdf https://doi.org/10.1080/08927010009378428 |
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ftoceanrep:oai:oceanrep.geomar.de:46226 2023-05-15T14:00:06+02:00 Chemical defenses against diatom fouling in Antarctic marine sponges Amsler, Charles D Moeller, Chris B McClintock, James B Iken, Katrin B Baker, Bill J 2000 text https://oceanrep.geomar.de/id/eprint/46226/ https://oceanrep.geomar.de/id/eprint/46226/1/20190326143727.pdf https://doi.org/10.1080/08927010009378428 en eng Taylor & Francis https://oceanrep.geomar.de/id/eprint/46226/1/20190326143727.pdf Amsler, C. D., Moeller, C. B., McClintock, J. B., Iken, K. B. and Baker, B. J. (2000) Chemical defenses against diatom fouling in Antarctic marine sponges. Biofouling, 16 (1). pp. 29-45. DOI 10.1080/08927010009378428 <https://doi.org/10.1080/08927010009378428>. doi:10.1080/08927010009378428 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2000 ftoceanrep https://doi.org/10.1080/08927010009378428 2023-04-07T15:44:35Z Antarctic sponges are commonly fouled by diatoms, sometimes so heavily as to occlude pores employed in filter feeding and respiration. This fouling becomes heavier during the annual summer microalgal bloom. Polar and non‐polar extracts of eight species of marine sponges from McMurdo Sound, Antarctica were assayed for cytotoxicity against sympatric fouling diatoms. To identify compounds potentially released by sponges as defenses against diatom biofouling, only fractions of crude extracts that were soluble in seawater or 2% methanol in seawater were assayed. Significant bioactivity was present in seven of the eight species. Both Mycale acerata and Homaxinella balfourensis displayed moderate levels of defense against diatoms even though they are not or are only weakly chemically defended against bacteria and predators. Calyx acuarius extracts, which do have antipredator and antibacterial effects, had no effect on diatoms except at levels many fold higher than present in the intact animal. These results strongly suggest some level of specificity for chemical defenses against diatom fouling in antarctic sponges. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Sound OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic McMurdo Sound Biofouling 16 1 29 45 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Antarctic sponges are commonly fouled by diatoms, sometimes so heavily as to occlude pores employed in filter feeding and respiration. This fouling becomes heavier during the annual summer microalgal bloom. Polar and non‐polar extracts of eight species of marine sponges from McMurdo Sound, Antarctica were assayed for cytotoxicity against sympatric fouling diatoms. To identify compounds potentially released by sponges as defenses against diatom biofouling, only fractions of crude extracts that were soluble in seawater or 2% methanol in seawater were assayed. Significant bioactivity was present in seven of the eight species. Both Mycale acerata and Homaxinella balfourensis displayed moderate levels of defense against diatoms even though they are not or are only weakly chemically defended against bacteria and predators. Calyx acuarius extracts, which do have antipredator and antibacterial effects, had no effect on diatoms except at levels many fold higher than present in the intact animal. These results strongly suggest some level of specificity for chemical defenses against diatom fouling in antarctic sponges. |
format |
Article in Journal/Newspaper |
author |
Amsler, Charles D Moeller, Chris B McClintock, James B Iken, Katrin B Baker, Bill J |
spellingShingle |
Amsler, Charles D Moeller, Chris B McClintock, James B Iken, Katrin B Baker, Bill J Chemical defenses against diatom fouling in Antarctic marine sponges |
author_facet |
Amsler, Charles D Moeller, Chris B McClintock, James B Iken, Katrin B Baker, Bill J |
author_sort |
Amsler, Charles D |
title |
Chemical defenses against diatom fouling in Antarctic marine sponges |
title_short |
Chemical defenses against diatom fouling in Antarctic marine sponges |
title_full |
Chemical defenses against diatom fouling in Antarctic marine sponges |
title_fullStr |
Chemical defenses against diatom fouling in Antarctic marine sponges |
title_full_unstemmed |
Chemical defenses against diatom fouling in Antarctic marine sponges |
title_sort |
chemical defenses against diatom fouling in antarctic marine sponges |
publisher |
Taylor & Francis |
publishDate |
2000 |
url |
https://oceanrep.geomar.de/id/eprint/46226/ https://oceanrep.geomar.de/id/eprint/46226/1/20190326143727.pdf https://doi.org/10.1080/08927010009378428 |
geographic |
Antarctic McMurdo Sound |
geographic_facet |
Antarctic McMurdo Sound |
genre |
Antarc* Antarctic Antarctica McMurdo Sound |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Sound |
op_relation |
https://oceanrep.geomar.de/id/eprint/46226/1/20190326143727.pdf Amsler, C. D., Moeller, C. B., McClintock, J. B., Iken, K. B. and Baker, B. J. (2000) Chemical defenses against diatom fouling in Antarctic marine sponges. Biofouling, 16 (1). pp. 29-45. DOI 10.1080/08927010009378428 <https://doi.org/10.1080/08927010009378428>. doi:10.1080/08927010009378428 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1080/08927010009378428 |
container_title |
Biofouling |
container_volume |
16 |
container_issue |
1 |
container_start_page |
29 |
op_container_end_page |
45 |
_version_ |
1766269093061591040 |