Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds
Wet and dry calorific values (energy densities) and total energy content of lesser sandeel Ammodytes marinus , sprat Sprattus sprattus , Atlantic herring Clupea harengus , whiting Merlangius merlangus , saithe Pollachius virens and cod Gadus morhua , were measured. Calorific values varied both withi...
Published in: | Journal of Zoology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://dx.doi.org/10.1111/j.1469-7998.1991.tb06039.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1991.tb06039.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb06039.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb06039.x |
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crwiley:10.1111/j.1469-7998.1991.tb06039.x 2024-09-15T18:07:20+00:00 Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds Hislop, J. R. G. Harris, M. P. Smith, J. G. M. 1991 http://dx.doi.org/10.1111/j.1469-7998.1991.tb06039.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1991.tb06039.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb06039.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb06039.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Zoology volume 224, issue 3, page 501-517 ISSN 0952-8369 1469-7998 journal-article 1991 crwiley https://doi.org/10.1111/j.1469-7998.1991.tb06039.x 2024-06-25T04:12:58Z Wet and dry calorific values (energy densities) and total energy content of lesser sandeel Ammodytes marinus , sprat Sprattus sprattus , Atlantic herring Clupea harengus , whiting Merlangius merlangus , saithe Pollachius virens and cod Gadus morhua , were measured. Calorific values varied both within and between species. Larger fish tended to have higher calorific values than small ones, particularly when considered in terms of wet weight, but there was considerable temporal variation. The calorific values and body weights of sandeels larger than 10 cm showed marked seasonal trends and in consequence the total energy content of a sandeel of given length in summer is approximately double the spring value. The calorific values of herring and sprat also varied from month to month but seasonal cycles were less obvious. Whiting varied least. Both calorific values and total energy content of individual sprat were very variable in summer (the spawning season of this species). Because there is so much intraspecific variation, care must be taken when assessing the relative merits (in terms of energy) of different species as prey. The practical difficulties of obtaining reliable data on wet calorific values are discussed and the use of dry calorific values and dry weight/length relationships is recommended. Article in Journal/Newspaper Gadus morhua Wiley Online Library Journal of Zoology 224 3 501 517 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Wet and dry calorific values (energy densities) and total energy content of lesser sandeel Ammodytes marinus , sprat Sprattus sprattus , Atlantic herring Clupea harengus , whiting Merlangius merlangus , saithe Pollachius virens and cod Gadus morhua , were measured. Calorific values varied both within and between species. Larger fish tended to have higher calorific values than small ones, particularly when considered in terms of wet weight, but there was considerable temporal variation. The calorific values and body weights of sandeels larger than 10 cm showed marked seasonal trends and in consequence the total energy content of a sandeel of given length in summer is approximately double the spring value. The calorific values of herring and sprat also varied from month to month but seasonal cycles were less obvious. Whiting varied least. Both calorific values and total energy content of individual sprat were very variable in summer (the spawning season of this species). Because there is so much intraspecific variation, care must be taken when assessing the relative merits (in terms of energy) of different species as prey. The practical difficulties of obtaining reliable data on wet calorific values are discussed and the use of dry calorific values and dry weight/length relationships is recommended. |
format |
Article in Journal/Newspaper |
author |
Hislop, J. R. G. Harris, M. P. Smith, J. G. M. |
spellingShingle |
Hislop, J. R. G. Harris, M. P. Smith, J. G. M. Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds |
author_facet |
Hislop, J. R. G. Harris, M. P. Smith, J. G. M. |
author_sort |
Hislop, J. R. G. |
title |
Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds |
title_short |
Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds |
title_full |
Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds |
title_fullStr |
Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds |
title_full_unstemmed |
Variation in the calorific value and total energy content of the lesser sandeel ( Ammodytes marinus) and other fish preyed on by seabirds |
title_sort |
variation in the calorific value and total energy content of the lesser sandeel ( ammodytes marinus) and other fish preyed on by seabirds |
publisher |
Wiley |
publishDate |
1991 |
url |
http://dx.doi.org/10.1111/j.1469-7998.1991.tb06039.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1991.tb06039.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb06039.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb06039.x |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Journal of Zoology volume 224, issue 3, page 501-517 ISSN 0952-8369 1469-7998 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1469-7998.1991.tb06039.x |
container_title |
Journal of Zoology |
container_volume |
224 |
container_issue |
3 |
container_start_page |
501 |
op_container_end_page |
517 |
_version_ |
1810444710453444608 |