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| Content Provider | Springer Nature Link |
|---|---|
| Author | Alonso, Hany Granadeiro, José P. Ramos, Jaime A. Catry, Paulo |
| Copyright Year | 2013 |
| Abstract | A literature review showed that most recent conventional dietary studies of Procellariiformes have used otoliths alone to identify fish prey. Using data from a dietary study of Cory’s Shearwaters Calonectris diomedea, based on 673 regurgitates from adult birds, we quantitatively compared the contribution of otoliths and vertebrae for prey identification and quantification. By using otoliths alone, the importance of the main fish prey was greatly underestimated and several species would have been considered completely absent. Therefore, we strongly recommend the combined use of vertebrae, otoliths and other fish remains in order to improve the quality of dietary studies of seabirds. Proben mit Rückgrat: die Wirbelsäulen von Fischen helfen, verzerrte Interpretationen im Zusammenhang mit Otolithen und Ernährungsstudien bei Seevögeln zu korrigieren Eine Auswertung der Literatur hat gezeigt, dass bei den neueren, üblichen Untersuchungen an Röhrennasen (Procellariiformes) nur Otolithen verwendet wurden, um die Beute der Vögel zu bestimmen. Anhand einer Studie über die Ernährung von Gelbschnabel-Sturmtauchern (Calonectris diomedea) verglichen wir in einer quantitativen Auswertung von 673 Proben von Erbrochenem adulter Vögel, welchen Beitrag einerseits die Otolithen, andererseits die Wirbelsäulen bei der Bestimmung und Quantifizierung der Beutetiere spielten. Berücksichtigte man nur die Otolithen, wurde die Bedeutung des wichtigsten Beutefisches stark unterschätzt, und einige Fischarten kamen überhaupt nicht vor. Deshalb empfehlen wir dringend, beides, Otolithen und diverse Fisch-Überreste, zu verwenden, um die Aussage-Qualität von Ernährungsstudien an Seevögeln zu verbessern. |
| Starting Page | 883 |
| Ending Page | 886 |
| Page Count | 4 |
| File Format | |
| ISSN | 21937192 |
| Journal | Journal für Ornithologie |
| Volume Number | 154 |
| Issue Number | 3 |
| e-ISSN | 21937206 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2013-05-21 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Top predator Prey identification Fish bones Diet sampling Cory’s Shearwater Calonectris diomedea Zoology Animal Ecology Evolutionary Biology |
| Content Type | Text |
| Resource Type | Article |
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