Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy)
1) The work aims to study the feeding habits of Phalacrocorax carbo sinensis wintering in the Cabras and Mistras lagoons and to assess the impact of the cormorants colony on fish stocks. 2) 438 bird flocks of Great Cormorant (Phalacrocorax carbo sinensis) wintering in the Cabras and Mistras lagoons...
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Online Access: | http://hdl.handle.net/11584/89839 https://doi.org/10.1285/i1825229Xv7n2p17 http://siba-ese.unisalento.it/index.php/twb/article/view/13421 |
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ftunicagliariris:oai:iris.unica.it:11584/89839 2024-02-11T09:55:34+01:00 Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy) Buttu S MULAS, ANTONELLO PALMAS, FRANCESCO CABIDDU, SERENELLA Buttu, S Mulas, Antonello Palmas, Francesco Cabiddu, Serenella 2013 http://hdl.handle.net/11584/89839 https://doi.org/10.1285/i1825229Xv7n2p17 http://siba-ese.unisalento.it/index.php/twb/article/view/13421 eng eng volume:7 issue:2 firstpage:17 lastpage:27 numberofpages:11 journal:TRANSITIONAL WATERS BULLETIN http://hdl.handle.net/11584/89839 doi:10.1285/i1825229Xv7n2p17 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84886053616 http://siba-ese.unisalento.it/index.php/twb/article/view/13421 info:eu-repo/semantics/closedAccess Cabras lagoon Phalacrocorax carbo sinensi Bird flock Diet Otolith Daily food intake info:eu-repo/semantics/article 2013 ftunicagliariris https://doi.org/10.1285/i1825229Xv7n2p17 2024-01-24T17:55:10Z 1) The work aims to study the feeding habits of Phalacrocorax carbo sinensis wintering in the Cabras and Mistras lagoons and to assess the impact of the cormorants colony on fish stocks. 2) 438 bird flocks of Great Cormorant (Phalacrocorax carbo sinensis) wintering in the Cabras and Mistras lagoons (central-western Sardinia) (SPA ITB034008 and ITB034006 respectively) were analysed. 3) Through the morphological analysis of undigested hard body parts, such as otoliths, it was possible to trace to the preyed species and their biomass and, then, to the average daily consumption of cormorants. 4) The trophic spectrum was dominated almost exclusively by euryhaline, gregarious fish species. Mugilidae, and particularly Liza ramada with a percentage index of relative importance (%IRI) of 75.28 and L. saliens (%IRI = 17.78) were the most important preys, while Dicentrarchus labrax (%IRI = 3.53) was of secondary importance. Other species, as Diplodus vulgaris (%IRI = 0.06), Sparus aurata (%IRI = 0.01), Solea solea (%IRI = 0.04) and Anguilla anguilla (%IRI = 0.01), completed the diet. 5) The Daily Food Intake (DFI) was estimated in 478.4 ± 18 g/day. The overall amount of biomass preyed by the cormorants during the entire wintering season was calculated in about 422 tons. Considering the Cabras lagoon area, it was possible to estimate an amount of fish taken equal to 189.4 Kg/ha during the same period. Article in Journal/Newspaper Anguilla anguilla Università degli Studi di Cagliari: UNICA IRIS |
institution |
Open Polar |
collection |
Università degli Studi di Cagliari: UNICA IRIS |
op_collection_id |
ftunicagliariris |
language |
English |
topic |
Cabras lagoon Phalacrocorax carbo sinensi Bird flock Diet Otolith Daily food intake |
spellingShingle |
Cabras lagoon Phalacrocorax carbo sinensi Bird flock Diet Otolith Daily food intake Buttu S MULAS, ANTONELLO PALMAS, FRANCESCO CABIDDU, SERENELLA Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy) |
topic_facet |
Cabras lagoon Phalacrocorax carbo sinensi Bird flock Diet Otolith Daily food intake |
description |
1) The work aims to study the feeding habits of Phalacrocorax carbo sinensis wintering in the Cabras and Mistras lagoons and to assess the impact of the cormorants colony on fish stocks. 2) 438 bird flocks of Great Cormorant (Phalacrocorax carbo sinensis) wintering in the Cabras and Mistras lagoons (central-western Sardinia) (SPA ITB034008 and ITB034006 respectively) were analysed. 3) Through the morphological analysis of undigested hard body parts, such as otoliths, it was possible to trace to the preyed species and their biomass and, then, to the average daily consumption of cormorants. 4) The trophic spectrum was dominated almost exclusively by euryhaline, gregarious fish species. Mugilidae, and particularly Liza ramada with a percentage index of relative importance (%IRI) of 75.28 and L. saliens (%IRI = 17.78) were the most important preys, while Dicentrarchus labrax (%IRI = 3.53) was of secondary importance. Other species, as Diplodus vulgaris (%IRI = 0.06), Sparus aurata (%IRI = 0.01), Solea solea (%IRI = 0.04) and Anguilla anguilla (%IRI = 0.01), completed the diet. 5) The Daily Food Intake (DFI) was estimated in 478.4 ± 18 g/day. The overall amount of biomass preyed by the cormorants during the entire wintering season was calculated in about 422 tons. Considering the Cabras lagoon area, it was possible to estimate an amount of fish taken equal to 189.4 Kg/ha during the same period. |
author2 |
Buttu, S Mulas, Antonello Palmas, Francesco Cabiddu, Serenella |
format |
Article in Journal/Newspaper |
author |
Buttu S MULAS, ANTONELLO PALMAS, FRANCESCO CABIDDU, SERENELLA |
author_facet |
Buttu S MULAS, ANTONELLO PALMAS, FRANCESCO CABIDDU, SERENELLA |
author_sort |
Buttu S |
title |
Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy) |
title_short |
Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy) |
title_full |
Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy) |
title_fullStr |
Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy) |
title_full_unstemmed |
Diet of Phalacrocorax carbo sinensis (Aves, Phalacrocoracidae) and impact on fish stocks: a study case in Cabras and Mistras lagoons (Sardinia, Italy) |
title_sort |
diet of phalacrocorax carbo sinensis (aves, phalacrocoracidae) and impact on fish stocks: a study case in cabras and mistras lagoons (sardinia, italy) |
publishDate |
2013 |
url |
http://hdl.handle.net/11584/89839 https://doi.org/10.1285/i1825229Xv7n2p17 http://siba-ese.unisalento.it/index.php/twb/article/view/13421 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
volume:7 issue:2 firstpage:17 lastpage:27 numberofpages:11 journal:TRANSITIONAL WATERS BULLETIN http://hdl.handle.net/11584/89839 doi:10.1285/i1825229Xv7n2p17 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84886053616 http://siba-ese.unisalento.it/index.php/twb/article/view/13421 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1285/i1825229Xv7n2p17 |
_version_ |
1790597386157948928 |