EdenteV2, Main, Exploration, bibRecord, 004804

Feeding ecology of the estuarine dolphin (Sotalia guianensis) on the coast of Rio Grande do Norte, Brazil

Identifieur interne : 004804 ( Main/Exploration ); précédent : 004803; suivant : 004805

Feeding ecology of the estuarine dolphin (Sotalia guianensis) on the coast of Rio Grande do Norte, Brazil

Auteurs : Kelly Cristina Araújo Pansard [Brésil] ; Hélio De Castro Bezerra Gurgel [Brésil] ; Lorena Candice De Araújo Andrade [Brésil] ; Maria Emília Yamamoto

Source :

Marine Mammal Science [ 0824-0469 ] ; 2011-10.

RBID : ISTEX:76264976F5EEBDCCD44D8C65E80471EA56D50DF8

Descripteurs français

Wicri :
- topic : Biomasse, Dauphin, écologie.

English descriptors

KwdEn :
- Adult animals, Barros, Beak, Benedito, Biomass, Breviceps, Cephalopod, Cetacean, Curema, Diet overlap, Diet similarity, Dolphin, Ecology, Estuarine, Estuarine dolphin, Estuarine dolphin diet, Estuarine dolphin prey, Estuarine dolphins, Family sciaenidae, Food ecology, Food items, Grande, Guianensis, Important prey, Insularis, Lagoa nova, Lepturus, Main prey, Mammal, Marine mammal science, Marine mammals, Norte, Oliveira, Otoliths, Pansard, Paran, Plei, Plumieri, Present study, Prey, Prey size, Prey species, Relative importance, Rhombeus, Santa catarina, Saurus albula, Sciaenidae, Sotalia, Sotalia guianensis, Stomach contents, Synagris, Teleost, Total biomass, Total number, Universidade.
Teeft :
- Adult animals, Barros, Beak, Benedito, Biomass, Breviceps, Cephalopod, Cetacean, Curema, Diet overlap, Diet similarity, Dolphin, Ecology, Estuarine, Estuarine dolphin, Estuarine dolphin diet, Estuarine dolphin prey, Estuarine dolphins, Family sciaenidae, Food ecology, Food items, Grande, Guianensis, Important prey, Insularis, Lagoa nova, Lepturus, Main prey, Mammal, Marine mammal science, Marine mammals, Norte, Oliveira, Otoliths, Pansard, Paran, Plei, Plumieri, Present study, Prey, Prey size, Prey species, Relative importance, Rhombeus, Santa catarina, Saurus albula, Sciaenidae, Sotalia, Sotalia guianensis, Stomach contents, Synagris, Teleost, Total biomass, Total number, Universidade.

Abstract

We analyzed the stomach contents of 40 estuarine dolphins, Sotalia guianensis (van Benédén 1864), beached on the coast of Rio Grande do Norte, Brazil, between February 2000 and February 2007. A total of 223 prey items were identified, including 18 species of teleosts and 5 species of cephalopods. The index of relative importance (IRI) showed that Larimus breviceps, Haemulon plumieri, Lutjanus synagris, Trichiurus lepturus, Mugil curema, and Diapterus rhombeus were the six most important species. The IRI showed that L. breviceps was the main prey for both adults and the young. H. plumieri was the most important for the males and T. lepturus for the females. Seven species of teleosts and two of cephalopods were recorded in the diet of estuarine dolphins for the first time in the country. Our results suggest that the estuarine dolphin can be a feeding specialist and that foraging activity occurs mainly in estuarine areas, where the animals can use passive listening to detect prey.

Url:

https://api.istex.fr/document/76264976F5EEBDCCD44D8C65E80471EA56D50DF8/fulltext/pdf

DOI: 10.1111/j.1748-7692.2010.00436.x

Affiliations:

Brésil

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<term>Benedito</term>
<term>Biomass</term>
<term>Breviceps</term>
<term>Cephalopod</term>
<term>Cetacean</term>
<term>Curema</term>
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<term>Important prey</term>
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<term>Plumieri</term>
<term>Present study</term>
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<term>Prey size</term>
<term>Prey species</term>
<term>Relative importance</term>
<term>Rhombeus</term>
<term>Santa catarina</term>
<term>Saurus albula</term>
<term>Sciaenidae</term>
<term>Sotalia</term>
<term>Sotalia guianensis</term>
<term>Stomach contents</term>
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<term>Teleost</term>
<term>Total biomass</term>
<term>Total number</term>
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<term>Diet overlap</term>
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<term>Ecology</term>
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<term>Estuarine dolphin diet</term>
<term>Estuarine dolphin prey</term>
<term>Estuarine dolphins</term>
<term>Family sciaenidae</term>
<term>Food ecology</term>
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<term>Important prey</term>
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<term>Lepturus</term>
<term>Main prey</term>
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<term>Marine mammal science</term>
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<term>Prey size</term>
<term>Prey species</term>
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<front><div type="abstract" xml:lang="en">We analyzed the stomach contents of 40 estuarine dolphins, Sotalia guianensis (van Benédén 1864), beached on the coast of Rio Grande do Norte, Brazil, between February 2000 and February 2007. A total of 223 prey items were identified, including 18 species of teleosts and 5 species of cephalopods. The index of relative importance (IRI) showed that Larimus breviceps, Haemulon plumieri, Lutjanus synagris, Trichiurus lepturus, Mugil curema, and Diapterus rhombeus were the six most important species. The IRI showed that L. breviceps was the main prey for both adults and the young. H. plumieri was the most important for the males and T. lepturus for the females. Seven species of teleosts and two of cephalopods were recorded in the diet of estuarine dolphins for the first time in the country. Our results suggest that the estuarine dolphin can be a feeding specialist and that foraging activity occurs mainly in estuarine areas, where the animals can use passive listening to detect prey.</div>
</front>
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Feeding ecology of the estuarine dolphin (Sotalia guianensis) on the coast of Rio Grande do Norte, Brazil

Feeding ecology of the estuarine dolphin (Sotalia guianensis) on the coast of Rio Grande do Norte, Brazil

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri