Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands)
Predation by adult bivalves on bivalve larvae has been suggested to reduce larval abundance in areas with high bivalve filter-feeder biomass. Although the occurrence of larviphagy is well-studied in the laboratory, its effects in the field have scarcely been studied. We studied larviphagy at differe...
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Online Access: | https://research.wur.nl/en/publications/effects-of-an-increasing-filter-feeder-stock-on-larval-abundance- https://doi.org/10.1016/j.seares.2008.11.006 |
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ftunivwagenin:oai:library.wur.nl:wurpubs/376446 2024-02-04T09:59:56+01:00 Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands) Troost, K. Gelderman, E.A.C. Kamermans, P. Smaal, A.C. Wolff, W. 2009 application/pdf https://research.wur.nl/en/publications/effects-of-an-increasing-filter-feeder-stock-on-larval-abundance- https://doi.org/10.1016/j.seares.2008.11.006 en eng https://edepot.wur.nl/1812 https://research.wur.nl/en/publications/effects-of-an-increasing-filter-feeder-stock-on-larval-abundance- doi:10.1016/j.seares.2008.11.006 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Journal of Sea Research 61 (2009) 3 ISSN: 1385-1101 boundary-layer cerastoderma-edule crassostrea-virginica ingestion mechanisms mussel mytilus-edulis oyster pelagic food-web suspension-feeding bivalves vertical-distribution info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2009 ftunivwagenin https://doi.org/10.1016/j.seares.2008.11.006 2024-01-10T23:23:29Z Predation by adult bivalves on bivalve larvae has been suggested to reduce larval abundance in areas with high bivalve filter-feeder biomass. Although the occurrence of larviphagy is well-studied in the laboratory, its effects in the field have scarcely been studied. We studied larviphagy at different spatial scales in the Oosterschelde estuary. On the scale of individuals, we confirmed that larviphagy occurs in Crassostrea gigas and Mytilus edulis in the Oosterschelde estuary, by examining stomach contents of adult bivalves. On a local scale, we studied effects of larviphagy by a Pacific oyster (C. gigas) bed on presence of larvae in the overlying water column by sampling larvae with fixed plankton nets. Abundance of blue mussel (M. edulis) larvae was significantly reduced by the oyster. Abundance of C. gigas larvae did not seem to be reduced by the oyster bed, but spawning by the adult oysters during the sampling period may have affected the results. On estuary-scale, the effect of larviphagy on larval abundance of C. gigas and M. edulis was studied using existing monitoring data over 6 years for M. edulis and 13 years for C. gigas. Numbers of M. edulis larvae showed no significant trend over the 6 years studied. Abundance of C. gigas larvae declined with an increasing filter feeder stock (that was mainly caused by an increase in C. gigas stock). This decline may be due to direct effects of larviphagy or indirect effects such as lowered food levels, and was not compensated by an increased larval production. All results combined, complemented with a theoretical estimate of the effect of larviphagy on estuary-scale, strongly suggest that larviphagy is major source of mortality for bivalve larvae in the Oosterschelde estuary. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Wageningen UR (University & Research Centre): Digital Library Pacific Journal of Sea Research 61 3 153 164 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
boundary-layer cerastoderma-edule crassostrea-virginica ingestion mechanisms mussel mytilus-edulis oyster pelagic food-web suspension-feeding bivalves vertical-distribution |
spellingShingle |
boundary-layer cerastoderma-edule crassostrea-virginica ingestion mechanisms mussel mytilus-edulis oyster pelagic food-web suspension-feeding bivalves vertical-distribution Troost, K. Gelderman, E.A.C. Kamermans, P. Smaal, A.C. Wolff, W. Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands) |
topic_facet |
boundary-layer cerastoderma-edule crassostrea-virginica ingestion mechanisms mussel mytilus-edulis oyster pelagic food-web suspension-feeding bivalves vertical-distribution |
description |
Predation by adult bivalves on bivalve larvae has been suggested to reduce larval abundance in areas with high bivalve filter-feeder biomass. Although the occurrence of larviphagy is well-studied in the laboratory, its effects in the field have scarcely been studied. We studied larviphagy at different spatial scales in the Oosterschelde estuary. On the scale of individuals, we confirmed that larviphagy occurs in Crassostrea gigas and Mytilus edulis in the Oosterschelde estuary, by examining stomach contents of adult bivalves. On a local scale, we studied effects of larviphagy by a Pacific oyster (C. gigas) bed on presence of larvae in the overlying water column by sampling larvae with fixed plankton nets. Abundance of blue mussel (M. edulis) larvae was significantly reduced by the oyster. Abundance of C. gigas larvae did not seem to be reduced by the oyster bed, but spawning by the adult oysters during the sampling period may have affected the results. On estuary-scale, the effect of larviphagy on larval abundance of C. gigas and M. edulis was studied using existing monitoring data over 6 years for M. edulis and 13 years for C. gigas. Numbers of M. edulis larvae showed no significant trend over the 6 years studied. Abundance of C. gigas larvae declined with an increasing filter feeder stock (that was mainly caused by an increase in C. gigas stock). This decline may be due to direct effects of larviphagy or indirect effects such as lowered food levels, and was not compensated by an increased larval production. All results combined, complemented with a theoretical estimate of the effect of larviphagy on estuary-scale, strongly suggest that larviphagy is major source of mortality for bivalve larvae in the Oosterschelde estuary. |
format |
Article in Journal/Newspaper |
author |
Troost, K. Gelderman, E.A.C. Kamermans, P. Smaal, A.C. Wolff, W. |
author_facet |
Troost, K. Gelderman, E.A.C. Kamermans, P. Smaal, A.C. Wolff, W. |
author_sort |
Troost, K. |
title |
Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands) |
title_short |
Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands) |
title_full |
Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands) |
title_fullStr |
Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands) |
title_full_unstemmed |
Effects of an increasing filter feeder stock on larval abundance in the Oosterschelde estuary (SW Netherlands) |
title_sort |
effects of an increasing filter feeder stock on larval abundance in the oosterschelde estuary (sw netherlands) |
publishDate |
2009 |
url |
https://research.wur.nl/en/publications/effects-of-an-increasing-filter-feeder-stock-on-larval-abundance- https://doi.org/10.1016/j.seares.2008.11.006 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
Journal of Sea Research 61 (2009) 3 ISSN: 1385-1101 |
op_relation |
https://edepot.wur.nl/1812 https://research.wur.nl/en/publications/effects-of-an-increasing-filter-feeder-stock-on-larval-abundance- doi:10.1016/j.seares.2008.11.006 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1016/j.seares.2008.11.006 |
container_title |
Journal of Sea Research |
container_volume |
61 |
container_issue |
3 |
container_start_page |
153 |
op_container_end_page |
164 |
_version_ |
1789964987531264000 |