Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters
The mean total length ( L T ), mass and age of ready to migrate female silver shortfin eels Anguilla australis from the Hopkins River estuary and the mouth of the Merri River in south-eastern Australia, were 83·2 ± 1·2 cm, 1051 ± 51 g, and 17·2 ± 1·79 years, respectively. The eye index ( I E ) of th...
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ftdeakinunifig:oai:figshare.com:article/20530896 2023-05-15T13:28:21+02:00 Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters S De Silva Rasanthi Gunasekera Bob Collins 2002-10-01T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30001556 https://figshare.com/articles/journal_contribution/Some_morphometric_and_biochemical_features_of_ready-to-migrate_silver_and_pre-migratory_yellow_stages_of_the_shortfin_eel_of_south-eastern_Australian_waters/20530896 unknown http://hdl.handle.net/10536/DRO/DU:30001556 https://figshare.com/articles/journal_contribution/Some_morphometric_and_biochemical_features_of_ready-to-migrate_silver_and_pre-migratory_yellow_stages_of_the_shortfin_eel_of_south-eastern_Australian_waters/20530896 All Rights Reserved Ecology Zoology Silver and yellow eels Size at migration Eye index Proximate composition Fatty acids Science & Technology Life Sciences & Biomedicine Fisheries Marine & Freshwater Biology ANGUILLA-ANGUILLA-L FRESH-WATER EUROPEAN EEL SEXUAL-MATURATION GONAD HISTOLOGY SIZE AGE RICHARDSON ABUNDANCE ROSTRATA Text Journal contribution 2002 ftdeakinunifig 2022-11-17T23:25:47Z The mean total length ( L T ), mass and age of ready to migrate female silver shortfin eels Anguilla australis from the Hopkins River estuary and the mouth of the Merri River in south-eastern Australia, were 83·2 ± 1·2 cm, 1051 ± 51 g, and 17·2 ± 1·79 years, respectively. The eye index ( I E ) of the silver shortfin eels was < 5·2 (mean 7·64 ± 0·29) and differed significantly from that of the yellow shortfin eels collected from two other sites. The I E increased with L T (mm) and was related by log I E = 2·656 log L T 6·925. The per cent moisture, protein and ash content of the liver of silver shortfin eels was significantly lower than in yellow shortfin eels, but lipid content was significantly higher in the former (35·5 ± 2·0%). The mean mass μg mg lipid ‾) of saturates (230·4 ± 2·6 v. 181·7 ±2·6), monoenes (367·4 ± 6·3 v. 290·8 ± 8·9) and PUFA (177·3 ± 5·3 v. 159·7 ± 4·6) in muscle was significantly higher, and the great majority of individual fatty acids was found also in higher quantities in silver shortfin eels. In the liver, the PUFA found in the highest quantity was 22:6n-3, except in shortfin eels from Hopkins River estuary, and the amount of 18:2n-6 in the liver of silver shortfin eels was significantly higher than that in yellow shortfin eels but the reverse was true of 20:4n-6. In both muscle and liver tissues the saturate 16:0 and the monoene 18:ln-9 collectively accounted for >50% of all the fatty acids in the lipid. Other Non-Article Part of Journal/Newspaper Anguilla anguilla DRO - Deakin Research Online |
institution |
Open Polar |
collection |
DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
Ecology Zoology Silver and yellow eels Size at migration Eye index Proximate composition Fatty acids Science & Technology Life Sciences & Biomedicine Fisheries Marine & Freshwater Biology ANGUILLA-ANGUILLA-L FRESH-WATER EUROPEAN EEL SEXUAL-MATURATION GONAD HISTOLOGY SIZE AGE RICHARDSON ABUNDANCE ROSTRATA |
spellingShingle |
Ecology Zoology Silver and yellow eels Size at migration Eye index Proximate composition Fatty acids Science & Technology Life Sciences & Biomedicine Fisheries Marine & Freshwater Biology ANGUILLA-ANGUILLA-L FRESH-WATER EUROPEAN EEL SEXUAL-MATURATION GONAD HISTOLOGY SIZE AGE RICHARDSON ABUNDANCE ROSTRATA S De Silva Rasanthi Gunasekera Bob Collins Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters |
topic_facet |
Ecology Zoology Silver and yellow eels Size at migration Eye index Proximate composition Fatty acids Science & Technology Life Sciences & Biomedicine Fisheries Marine & Freshwater Biology ANGUILLA-ANGUILLA-L FRESH-WATER EUROPEAN EEL SEXUAL-MATURATION GONAD HISTOLOGY SIZE AGE RICHARDSON ABUNDANCE ROSTRATA |
description |
The mean total length ( L T ), mass and age of ready to migrate female silver shortfin eels Anguilla australis from the Hopkins River estuary and the mouth of the Merri River in south-eastern Australia, were 83·2 ± 1·2 cm, 1051 ± 51 g, and 17·2 ± 1·79 years, respectively. The eye index ( I E ) of the silver shortfin eels was < 5·2 (mean 7·64 ± 0·29) and differed significantly from that of the yellow shortfin eels collected from two other sites. The I E increased with L T (mm) and was related by log I E = 2·656 log L T 6·925. The per cent moisture, protein and ash content of the liver of silver shortfin eels was significantly lower than in yellow shortfin eels, but lipid content was significantly higher in the former (35·5 ± 2·0%). The mean mass μg mg lipid ‾) of saturates (230·4 ± 2·6 v. 181·7 ±2·6), monoenes (367·4 ± 6·3 v. 290·8 ± 8·9) and PUFA (177·3 ± 5·3 v. 159·7 ± 4·6) in muscle was significantly higher, and the great majority of individual fatty acids was found also in higher quantities in silver shortfin eels. In the liver, the PUFA found in the highest quantity was 22:6n-3, except in shortfin eels from Hopkins River estuary, and the amount of 18:2n-6 in the liver of silver shortfin eels was significantly higher than that in yellow shortfin eels but the reverse was true of 20:4n-6. In both muscle and liver tissues the saturate 16:0 and the monoene 18:ln-9 collectively accounted for >50% of all the fatty acids in the lipid. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
S De Silva Rasanthi Gunasekera Bob Collins |
author_facet |
S De Silva Rasanthi Gunasekera Bob Collins |
author_sort |
S De Silva |
title |
Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters |
title_short |
Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters |
title_full |
Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters |
title_fullStr |
Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters |
title_full_unstemmed |
Some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern Australian waters |
title_sort |
some morphometric and biochemical features of ready-to-migrate silver and pre-migratory yellow stages of the shortfin eel of south-eastern australian waters |
publishDate |
2002 |
url |
http://hdl.handle.net/10536/DRO/DU:30001556 https://figshare.com/articles/journal_contribution/Some_morphometric_and_biochemical_features_of_ready-to-migrate_silver_and_pre-migratory_yellow_stages_of_the_shortfin_eel_of_south-eastern_Australian_waters/20530896 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30001556 https://figshare.com/articles/journal_contribution/Some_morphometric_and_biochemical_features_of_ready-to-migrate_silver_and_pre-migratory_yellow_stages_of_the_shortfin_eel_of_south-eastern_Australian_waters/20530896 |
op_rights |
All Rights Reserved |
_version_ |
1766403607402381312 |