Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses.
The cuttlefish Sepia apama Gray (Mollusca: Cephalopoda) is a seasonally abundant food resource exploited annually by moulting albatrosses throughout winter and early spring in the coastal waters of New South Wales, Australia. To assess its nutritional value as albatross forage, we analysed S. apama...
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ftdeakinunifig:oai:figshare.com:article/21011419 2023-05-15T14:17:08+02:00 Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses. H Battam M Richardson A Watson William Buttemer 2010-11-01T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30034426 https://figshare.com/articles/journal_contribution/Chemical_composition_and_tissue_energy_density_of_the_cuttlefish_Sepia_apama_and_its_assimilation_efficiency_by_Diomedea_albatrosses_/21011419 unknown http://hdl.handle.net/10536/DRO/DU:30034426 https://figshare.com/articles/journal_contribution/Chemical_composition_and_tissue_energy_density_of_the_cuttlefish_Sepia_apama_and_its_assimilation_efficiency_by_Diomedea_albatrosses_/21011419 All Rights Reserved Physiology Zoology Cephalopods Proximate analysis Albatrosses Assimilation efficiency Science & Technology Life Sciences & Biomedicine AMINO-ACID-COMPOSITION WHITE-CROWNED SPARROW FATTY-ACID WANDERING ALBATROSS APTENODYTES-FORSTERI EUPHAUSIA-SUPERBA EMPEROR PENGUINS SOUTH GEORGIA BIRD-ISLAND PREY Text Journal contribution 2010 ftdeakinunifig 2022-11-17T22:25:57Z The cuttlefish Sepia apama Gray (Mollusca: Cephalopoda) is a seasonally abundant food resource exploited annually by moulting albatrosses throughout winter and early spring in the coastal waters of New South Wales, Australia. To assess its nutritional value as albatross forage, we analysed S. apama for water, lipid protein, ash contents, energy density and amino acid composition. Because albatrosses consistently consume S. apama parts preferentially in the order of head, viscera and mantle, we analysed these sections separately, but did not identify any nutritional basis for this selective feeding behaviour. The gross energy value of S. apama bodies was 20.9 kJ/g dry mass, but their high water content (>83%; cf <70% for fish) results in a relatively low energy density of 3.53 kJ/g. This may contribute to a need to take large meals, which subsequently degrade flight performance. Protein content was typically >75% dry mass, whereas fat content was only about 1%. Albatrosses feed on many species of cephalopods and teleost fish, and we found the amino acid composition of S. apama to be comparable to a range of species within these taxa. We used S. apama exclusively in feeding trials to estimate the energy assimilation efficiency for Diomedea albatrosses. We estimated their nitrogen-corrected apparent energy assimilation efficiency for consuming this prey to be 81.82 ± 0.72% and nitrogen retention as 2.90 ± 0.11 g N kg -1 d -1 . Although S. apama has a high water content and relatively low energy density, its protein composition is otherwise comparable to other albatross prey species. Consequently, the large size and seasonal abundance of this prey should ensure that albatrosses remain replete and adequately nourished on this forage while undergoing moult. Other Non-Article Part of Journal/Newspaper Aptenodytes forsteri Bird Island Emperor penguins Euphausia superba Wandering Albatross DRO - Deakin Research Online Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
institution |
Open Polar |
collection |
DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
Physiology Zoology Cephalopods Proximate analysis Albatrosses Assimilation efficiency Science & Technology Life Sciences & Biomedicine AMINO-ACID-COMPOSITION WHITE-CROWNED SPARROW FATTY-ACID WANDERING ALBATROSS APTENODYTES-FORSTERI EUPHAUSIA-SUPERBA EMPEROR PENGUINS SOUTH GEORGIA BIRD-ISLAND PREY |
spellingShingle |
Physiology Zoology Cephalopods Proximate analysis Albatrosses Assimilation efficiency Science & Technology Life Sciences & Biomedicine AMINO-ACID-COMPOSITION WHITE-CROWNED SPARROW FATTY-ACID WANDERING ALBATROSS APTENODYTES-FORSTERI EUPHAUSIA-SUPERBA EMPEROR PENGUINS SOUTH GEORGIA BIRD-ISLAND PREY H Battam M Richardson A Watson William Buttemer Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses. |
topic_facet |
Physiology Zoology Cephalopods Proximate analysis Albatrosses Assimilation efficiency Science & Technology Life Sciences & Biomedicine AMINO-ACID-COMPOSITION WHITE-CROWNED SPARROW FATTY-ACID WANDERING ALBATROSS APTENODYTES-FORSTERI EUPHAUSIA-SUPERBA EMPEROR PENGUINS SOUTH GEORGIA BIRD-ISLAND PREY |
description |
The cuttlefish Sepia apama Gray (Mollusca: Cephalopoda) is a seasonally abundant food resource exploited annually by moulting albatrosses throughout winter and early spring in the coastal waters of New South Wales, Australia. To assess its nutritional value as albatross forage, we analysed S. apama for water, lipid protein, ash contents, energy density and amino acid composition. Because albatrosses consistently consume S. apama parts preferentially in the order of head, viscera and mantle, we analysed these sections separately, but did not identify any nutritional basis for this selective feeding behaviour. The gross energy value of S. apama bodies was 20.9 kJ/g dry mass, but their high water content (>83%; cf <70% for fish) results in a relatively low energy density of 3.53 kJ/g. This may contribute to a need to take large meals, which subsequently degrade flight performance. Protein content was typically >75% dry mass, whereas fat content was only about 1%. Albatrosses feed on many species of cephalopods and teleost fish, and we found the amino acid composition of S. apama to be comparable to a range of species within these taxa. We used S. apama exclusively in feeding trials to estimate the energy assimilation efficiency for Diomedea albatrosses. We estimated their nitrogen-corrected apparent energy assimilation efficiency for consuming this prey to be 81.82 ± 0.72% and nitrogen retention as 2.90 ± 0.11 g N kg -1 d -1 . Although S. apama has a high water content and relatively low energy density, its protein composition is otherwise comparable to other albatross prey species. Consequently, the large size and seasonal abundance of this prey should ensure that albatrosses remain replete and adequately nourished on this forage while undergoing moult. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
H Battam M Richardson A Watson William Buttemer |
author_facet |
H Battam M Richardson A Watson William Buttemer |
author_sort |
H Battam |
title |
Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses. |
title_short |
Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses. |
title_full |
Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses. |
title_fullStr |
Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses. |
title_full_unstemmed |
Chemical composition and tissue energy density of the cuttlefish (Sepia apama) and its assimilation efficiency by Diomedea albatrosses. |
title_sort |
chemical composition and tissue energy density of the cuttlefish (sepia apama) and its assimilation efficiency by diomedea albatrosses. |
publishDate |
2010 |
url |
http://hdl.handle.net/10536/DRO/DU:30034426 https://figshare.com/articles/journal_contribution/Chemical_composition_and_tissue_energy_density_of_the_cuttlefish_Sepia_apama_and_its_assimilation_efficiency_by_Diomedea_albatrosses_/21011419 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Bird Island |
geographic_facet |
Bird Island |
genre |
Aptenodytes forsteri Bird Island Emperor penguins Euphausia superba Wandering Albatross |
genre_facet |
Aptenodytes forsteri Bird Island Emperor penguins Euphausia superba Wandering Albatross |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30034426 https://figshare.com/articles/journal_contribution/Chemical_composition_and_tissue_energy_density_of_the_cuttlefish_Sepia_apama_and_its_assimilation_efficiency_by_Diomedea_albatrosses_/21011419 |
op_rights |
All Rights Reserved |
_version_ |
1766289059134570496 |