Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers
Biochemical substances released from Daphnia galeata induced colony formation in the green alga Scenedesmus acutus . Normally this strain consisted mainly of single cells in cultures. However, if exposed for 48 h to either water with live Daphnia or to 0.1‐ µ m filtered water from a culture with Dap...
Published in: | Limnology and Oceanography |
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Language: | English |
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crwiley:10.4319/lo.1997.42.4.0783 2024-10-13T14:11:23+00:00 Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers Lürling, Miquel Van Donk, Ellen 1997 http://dx.doi.org/10.4319/lo.1997.42.4.0783 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1997.42.4.0783 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1997.42.4.0783 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 42, issue 4, page 783-788 ISSN 0024-3590 1939-5590 journal-article 1997 crwiley https://doi.org/10.4319/lo.1997.42.4.0783 2024-09-23T04:33:28Z Biochemical substances released from Daphnia galeata induced colony formation in the green alga Scenedesmus acutus . Normally this strain consisted mainly of single cells in cultures. However, if exposed for 48 h to either water with live Daphnia or to 0.1‐ µ m filtered water from a culture with Daphnia present, these unicellular “Chodatella” stages were induced to form colonies (coenobia). Colony induction was not unique to Daphnia other zooplankters (rotifers and copepods) were able to induce colonies in S. acutus as well. This morphological response could also be evoked when Scenedesmus was exposed to 0.1‐ µ m filtered lake water during high zooplankton abundances. Especially during early spring, a clear relationship was found between rotifer abundance and colony formation in our test alga in the laboratory. Filtered lake water, incubated nonaxenically for at least 2 d at 20°C, did not induce colony formation, possibly due to microbial degradation. The morphological changes in Scenedesmus could promote grazing resistance in small zooplankters and can be interpreted as an adaptive antipredator strategy. Article in Journal/Newspaper Copepods Rotifer Wiley Online Library Limnology and Oceanography 42 4 783 788 |
institution |
Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Biochemical substances released from Daphnia galeata induced colony formation in the green alga Scenedesmus acutus . Normally this strain consisted mainly of single cells in cultures. However, if exposed for 48 h to either water with live Daphnia or to 0.1‐ µ m filtered water from a culture with Daphnia present, these unicellular “Chodatella” stages were induced to form colonies (coenobia). Colony induction was not unique to Daphnia other zooplankters (rotifers and copepods) were able to induce colonies in S. acutus as well. This morphological response could also be evoked when Scenedesmus was exposed to 0.1‐ µ m filtered lake water during high zooplankton abundances. Especially during early spring, a clear relationship was found between rotifer abundance and colony formation in our test alga in the laboratory. Filtered lake water, incubated nonaxenically for at least 2 d at 20°C, did not induce colony formation, possibly due to microbial degradation. The morphological changes in Scenedesmus could promote grazing resistance in small zooplankters and can be interpreted as an adaptive antipredator strategy. |
format |
Article in Journal/Newspaper |
author |
Lürling, Miquel Van Donk, Ellen |
spellingShingle |
Lürling, Miquel Van Donk, Ellen Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers |
author_facet |
Lürling, Miquel Van Donk, Ellen |
author_sort |
Lürling, Miquel |
title |
Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers |
title_short |
Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers |
title_full |
Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers |
title_fullStr |
Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers |
title_full_unstemmed |
Morphological changes in Scenedesmus induced by infochemicals released in situ from zooplankton grazers |
title_sort |
morphological changes in scenedesmus induced by infochemicals released in situ from zooplankton grazers |
publisher |
Wiley |
publishDate |
1997 |
url |
http://dx.doi.org/10.4319/lo.1997.42.4.0783 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1997.42.4.0783 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1997.42.4.0783 |
genre |
Copepods Rotifer |
genre_facet |
Copepods Rotifer |
op_source |
Limnology and Oceanography volume 42, issue 4, page 783-788 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1997.42.4.0783 |
container_title |
Limnology and Oceanography |
container_volume |
42 |
container_issue |
4 |
container_start_page |
783 |
op_container_end_page |
788 |
_version_ |
1812819098729447424 |