The diet of the Little Tern (Sternula albifrons), an estuarine seabird species breeding in southern Portugal, was determined by separately identifying fish otoliths and scales found in pellets. Using both fish otoliths and scales showed that the diet of Little Terns was mainly composed of sand-smelts (Atherina spp.), but there were differences in secondary prey items. Species such as sardine (Sardina pilchardus), with very small and easily degraded otoliths, showed a higher percentage of occurrence in the diet using scale analysis. This study suggests that both methods should be used together to evaluate the diet of small estuarine seabird species.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 39 • No. 3