Atlantic cod predation on redfish in Flemish Cap
The aim of this study is to estimate the predation on redfish by Atlantic cod in Flemish Cap in the period 2000- 2010 and the impact of the cod stock recovery in recent years on the prey stock. Atlantic cod samples of stomach contents were taken in the Flemish Cap survey (NAFO Div. 3M). The analysis...
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ftcsic:oai:digital.csic.es:10261/328104 2024-02-11T10:01:56+01:00 Atlantic cod predation on redfish in Flemish Cap González-Iglesias María de la Concepción González-Costas, Fernando González-Troncoso, Diana Atlantic Ocean North Atlantic Northwest Atlantic NAFO Flemish Cap 2012-06 http://hdl.handle.net/10508/766 http://hdl.handle.net/10261/328104 en eng Centro Oceanográfico de Vigo González Iglesias, C., González Costas, C., González Troncoso, D. 2012. Atlantic cod predation on redfish in Flemish Cap. NAFO Sci. Coun. Res. Doc. 12/027, Serial Nº N6053: 10p. http://hdl.handle.net/10508/766 http://hdl.handle.net/10261/328104 open Pesquerías Centro Oceanográfico de Vigo documento de trabajo http://purl.org/coar/resource_type/c_8042 2012 ftcsic 2024-01-16T11:49:14Z The aim of this study is to estimate the predation on redfish by Atlantic cod in Flemish Cap in the period 2000- 2010 and the impact of the cod stock recovery in recent years on the prey stock. Atlantic cod samples of stomach contents were taken in the Flemish Cap survey (NAFO Div. 3M). The analysis was done jointly from all individuals, undifferentiated sexes. They were established four size groups of Atlantic cod with a different predation rate on redfish: less than 30 cm, 30-59 cm, 60-79 cm and ≥80 cm. Results show a clear increasing trend in the daily consumption of redfish by cod since 2005. Cod less than 30 cm (one year old) does not consume redfish. Cod with lengths more than 30 cm presents an increasing trend in the quantity of the redfish preyed in the analyzed period. This trend is more evident in the cod more than 60 cm, ages older than 5 years old. Redfish more than 27 cm (older than 8 years old) does not appear in the cod diet. Redfish estimated biomass consumed by total cod biomass is higher than redfish biomass estimated in the last approved assessment disappeared by natural mortality in the period 2000-2005. Report atlantic cod North Atlantic Northwest Atlantic Digital.CSIC (Spanish National Research Council) |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
English |
topic |
Pesquerías Centro Oceanográfico de Vigo |
spellingShingle |
Pesquerías Centro Oceanográfico de Vigo González-Iglesias María de la Concepción González-Costas, Fernando González-Troncoso, Diana Atlantic cod predation on redfish in Flemish Cap |
topic_facet |
Pesquerías Centro Oceanográfico de Vigo |
description |
The aim of this study is to estimate the predation on redfish by Atlantic cod in Flemish Cap in the period 2000- 2010 and the impact of the cod stock recovery in recent years on the prey stock. Atlantic cod samples of stomach contents were taken in the Flemish Cap survey (NAFO Div. 3M). The analysis was done jointly from all individuals, undifferentiated sexes. They were established four size groups of Atlantic cod with a different predation rate on redfish: less than 30 cm, 30-59 cm, 60-79 cm and ≥80 cm. Results show a clear increasing trend in the daily consumption of redfish by cod since 2005. Cod less than 30 cm (one year old) does not consume redfish. Cod with lengths more than 30 cm presents an increasing trend in the quantity of the redfish preyed in the analyzed period. This trend is more evident in the cod more than 60 cm, ages older than 5 years old. Redfish more than 27 cm (older than 8 years old) does not appear in the cod diet. Redfish estimated biomass consumed by total cod biomass is higher than redfish biomass estimated in the last approved assessment disappeared by natural mortality in the period 2000-2005. |
format |
Report |
author |
González-Iglesias María de la Concepción González-Costas, Fernando González-Troncoso, Diana |
author_facet |
González-Iglesias María de la Concepción González-Costas, Fernando González-Troncoso, Diana |
author_sort |
González-Iglesias |
title |
Atlantic cod predation on redfish in Flemish Cap |
title_short |
Atlantic cod predation on redfish in Flemish Cap |
title_full |
Atlantic cod predation on redfish in Flemish Cap |
title_fullStr |
Atlantic cod predation on redfish in Flemish Cap |
title_full_unstemmed |
Atlantic cod predation on redfish in Flemish Cap |
title_sort |
atlantic cod predation on redfish in flemish cap |
publishDate |
2012 |
url |
http://hdl.handle.net/10508/766 http://hdl.handle.net/10261/328104 |
op_coverage |
Atlantic Ocean North Atlantic Northwest Atlantic NAFO Flemish Cap |
genre |
atlantic cod North Atlantic Northwest Atlantic |
genre_facet |
atlantic cod North Atlantic Northwest Atlantic |
op_relation |
Centro Oceanográfico de Vigo González Iglesias, C., González Costas, C., González Troncoso, D. 2012. Atlantic cod predation on redfish in Flemish Cap. NAFO Sci. Coun. Res. Doc. 12/027, Serial Nº N6053: 10p. http://hdl.handle.net/10508/766 http://hdl.handle.net/10261/328104 |
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open |
_version_ |
1790597819597324288 |