scholarly journals Preliminary data on feeding behaviour of young-of-the-year twaite shad, Alosa fallax (Lacepede, 1803), during their downstream migration in two rivers of the NW of the Iberian Peninsula

2016 ◽  
Vol 2016 (sibic2106) ◽  
Author(s):  
David J. Nachón ◽  
◽  
Rufino Vieira-Lanero ◽  
Sandra Barca ◽  
Sergio Silva ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Preliminary Data ◽  
Feeding Behaviour ◽  
Downstream Migration ◽  
Twaite Shad ◽  
Alosa Fallax ◽  
Young Of The Year

Marine and continental distribution and dynamic of the early spawning migration of twaite shad (Alosa fallax (Lacépède, 1803)) and allis shad (Alosa alosa (Linnaeus, 1758)) in the north-west of the Iberian Peninsula

2016 ◽  
Vol 67 (8) ◽  
pp. 1229 ◽  
Author(s):  
D. J. Nachón ◽  
M. Mota ◽  
C. Antunes ◽  
M. J. Servia ◽  
F. Cobo
Keyword(s):  
Iberian Peninsula ◽  
Habitats Directive ◽  
The European Union ◽  
North West ◽  
The North ◽  
Allis Shad ◽  
Alosa Alosa ◽  
Twaite Shad ◽  
In The Wild ◽  
Alosa Fallax

Knowledge regarding the marine phase of twaite shad (Alosa fallax (Lacépède, 1803)) and allis shad (Alosa alosa (Linnaeus, 1758)) remains limited. To understand the coastal and continental distribution and dynamic of migration of these species, in the present study we collected official data records of marine landings (kg), separated according to species, for all fish markets in Galicia (north-west of the Iberian Peninsula) and undertook freshwater field sampling campaigns. The findings indicate that both species of shad exhibit a coastal distribution near the rivers where they spawn, namely the Minho and Ulla rivers. Catches at sea declined from January, a phenomenon that can be understood as the onset of migration to the rivers. Bycatch reports are important because both A. fallax and A. alosa are listed in the Annex V of the European Union Habitats Directive, which lists animal species whose exploitation and taking in the wild may be subject to management measures. However, for a better management of these species it is necessary to understand the magnitude of displacements and connection of shad populations at sea.

scholarly journals Some aspects of the reproductive biology of the twaite shad, Alosa fallax (Lacépède, 1803), in the River Ulla (Northwest of the Iberian Peninsula)

2015 ◽  
Vol 2 ◽  
Author(s):  
Nachón David ◽  
Barca Sandra ◽  
Silva Sergio ◽  
Vieira-Lanero Rufino ◽  
Servia María ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Reproductive Biology ◽  
Twaite Shad ◽  
Alosa Fallax

Feeding of twaite shad, Alosa fallax (Lacépède, 1803), during the upstream spawning migration in the River Ulla (NW Spain)

2013 ◽  
Vol 64 (3) ◽  
pp. 233 ◽  
Author(s):  
D. J. Nachón ◽  
J. Sánchez-Hernández ◽  
R. Vieira-Lanero ◽  
F. Cobo
Keyword(s):  
Stomach Content ◽  
Feeding Behaviour ◽  
Diet Composition ◽  
Aquatic Invertebrates ◽  
First Record ◽  
Spawning Migration ◽  
Important Food ◽  
Nw Spain ◽  
Twaite Shad ◽  
Alosa Fallax

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.

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