Feeding of twaite shad, Alosa fallax (Lacépède, 1803), during the upstream spawning migration in the River Ulla (NW Spain)
D. J. Nachón A B C , J. Sánchez-Hernández A B , R. Vieira-Lanero B and F. Cobo A B
+ Author Affiliations
- Author Affiliations
A Department of Zoology and Physical Anthropology, Faculty of Biology. University of Santiago de Compostela. Campus Vida s/n, 15782 Santiago de Compostela, Spain.
B Station of Hydrobiology ‘Encoro do Con’, Castroagudín s/n, 36617 Vilagarcía de Arousa, Pontevedra, Spain.
C Corresponding author. Email: davidjose.nachon@usc.es
Marine and Freshwater Research 64(3) 233-236 https://doi.org/10.1071/MF12322
Submitted: 21 September 2012 Accepted: 17 December 2012 Published: 18 March 2013
Abstract
In order to contribute to a better understanding of feeding behaviour of adult twaite shad, Alosa fallax, in freshwater, we studied the stomach content composition of 147 A. fallax during their upstream spawning migration in the River Ulla (Galicia, NW Spain). The diet composition included 34 types of prey, aquatic invertebrates being the most important food. The present study is, to the best of our knowledge, the first record of A. fallax feeding on potamodromous Pseudochondrostoma duriense.
Additional keywords: Alosa fallax, diet, Iberian Peninsula, piscivorous, Pseudochondrostoma duriense.
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