Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems
The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, Aqua...
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| Autor*in: |
Burford, Michele A [verfasserIn] Sellars, Melony J [verfasserIn] Arnold, Stuart J [verfasserIn] |
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| Format: |
E-Artikel |
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| Erschienen: |
Oxford, UK: Blackwell Science Ltd ; 2004 |
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| Schlagwörter: |
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| Umfang: |
Online-Ressource |
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| Reproduktion: |
2004 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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| Übergeordnetes Werk: |
In: Aquaculture research - Oxford : Wiley-Blackwell, 1995, 35(2004), 5, Seite 0 |
| Übergeordnetes Werk: |
volume:35 ; year:2004 ; number:5 ; pages:0 |
| Links: |
|---|
| DOI / URN: |
10.1111/j.1365-2109.2004.01052.x |
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| 520 | |a The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. | ||
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10.1111/j.1365-2109.2004.01052.x doi (DE-627)NLEJ24218054X DE-627 ger DE-627 rakwb Burford, Michele A verfasserin aut Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| stable isotopes Sellars, Melony J verfasserin aut Arnold, Stuart J verfasserin aut Keys, Sandy J oth Crocos, Peter J oth Preston, Nigel P oth In Aquaculture research Oxford : Wiley-Blackwell, 1995 35(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243925824 (DE-600)2019895-4 1365-2109 nnns volume:35 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-2109.2004.01052.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 35 2004 5 0 |
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10.1111/j.1365-2109.2004.01052.x doi (DE-627)NLEJ24218054X DE-627 ger DE-627 rakwb Burford, Michele A verfasserin aut Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| stable isotopes Sellars, Melony J verfasserin aut Arnold, Stuart J verfasserin aut Keys, Sandy J oth Crocos, Peter J oth Preston, Nigel P oth In Aquaculture research Oxford : Wiley-Blackwell, 1995 35(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243925824 (DE-600)2019895-4 1365-2109 nnns volume:35 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-2109.2004.01052.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 35 2004 5 0 |
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10.1111/j.1365-2109.2004.01052.x doi (DE-627)NLEJ24218054X DE-627 ger DE-627 rakwb Burford, Michele A verfasserin aut Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| stable isotopes Sellars, Melony J verfasserin aut Arnold, Stuart J verfasserin aut Keys, Sandy J oth Crocos, Peter J oth Preston, Nigel P oth In Aquaculture research Oxford : Wiley-Blackwell, 1995 35(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243925824 (DE-600)2019895-4 1365-2109 nnns volume:35 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-2109.2004.01052.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 35 2004 5 0 |
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10.1111/j.1365-2109.2004.01052.x doi (DE-627)NLEJ24218054X DE-627 ger DE-627 rakwb Burford, Michele A verfasserin aut Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| stable isotopes Sellars, Melony J verfasserin aut Arnold, Stuart J verfasserin aut Keys, Sandy J oth Crocos, Peter J oth Preston, Nigel P oth In Aquaculture research Oxford : Wiley-Blackwell, 1995 35(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243925824 (DE-600)2019895-4 1365-2109 nnns volume:35 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-2109.2004.01052.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 35 2004 5 0 |
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10.1111/j.1365-2109.2004.01052.x doi (DE-627)NLEJ24218054X DE-627 ger DE-627 rakwb Burford, Michele A verfasserin aut Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| stable isotopes Sellars, Melony J verfasserin aut Arnold, Stuart J verfasserin aut Keys, Sandy J oth Crocos, Peter J oth Preston, Nigel P oth In Aquaculture research Oxford : Wiley-Blackwell, 1995 35(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243925824 (DE-600)2019895-4 1365-2109 nnns volume:35 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-2109.2004.01052.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 35 2004 5 0 |
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Burford, Michele A |
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10.1111/j.1365-2109.2004.01052.x |
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verfasserin |
| title_sort |
contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, penaeus esculentus (haswell), inhigh-density rearing systems |
| title_auth |
Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems |
| abstract |
The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. |
| abstractGer |
The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. |
| abstract_unstemmed |
The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp. |
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Contribution of the natural biota associated with substrates to the nutritional requirements of the post-larval shrimp, Penaeus esculentus (Haswell), inhigh-density rearing systems |
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Sellars, Melony J Arnold, Stuart J Keys, Sandy J Crocos, Peter J Preston, Nigel P |
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