scholarly journals Cephalopod prey of the wandering albatross Diomedea exulans

1987 ◽  
Vol 96 (1) ◽  
pp. 1-10 ◽  
Author(s):  
P. G. Rodhouse ◽  
M. R. Clarke ◽  
A. W. A. Murray
1995 ◽  
Vol 95 (3) ◽  
pp. 223-230 ◽  
Author(s):  
David Nicholls ◽  
Durno Murray ◽  
Harry Battam ◽  
Graham Robertson ◽  
Philip Moors ◽  
...  

2011 ◽  
Vol 68 (9) ◽  
pp. 1857-1864 ◽  
Author(s):  
José C. Xavier ◽  
Richard A. Phillips ◽  
Yves Cherel

AbstractXavier, J. C., Phillips, R. A., and Cherel, Y. 2011. Cephalopods in marine predator diet assessments: why identifying upper and lower beaks is important. – ICES Journal of Marine Science, 68: 1857–1864. Cephalopods are components of the diet of many predators worldwide. They are identified mainly using their chitinized upper and lower beaks, but because it has been assumed that the number of upper and lower beaks would be the same in predator diet samples, more effort has been put into creating keys for the lower beaks, which are more easily identifiable from morphology. A test is made of whether the number of upper and lower beaks differs in diet samples collected from a major cephalopod predator, the wandering albatross (Diomedea exulans), potential biases in the estimation of predator diets are assessed, and upper:lower beak ratios in published studies of other seabirds, seals, whales, and fish from different parts of the world reviewed. The ratio of upper to lower beaks in diet samples from wandering albatrosses varied greatly in a single year (from 69.6% more lower beaks to 59% more upper beaks), and between years (from 0.5 to 32.1% more upper beaks), and biases were greater for certain cephalopod species, resulting in underestimation of their relative importance. Future studies need to consider using both upper and lower beaks to improve the assessment of the contribution of different cephalopods to predator diets.


Ibis ◽  
2006 ◽  
Vol 149 (1) ◽  
pp. 67-78 ◽  
Author(s):  
PIERRE JOUVENTIN ◽  
ANNE CHARMANTIER ◽  
MARIE-PIERRE DUBOIS ◽  
PHILIPPE JARNE ◽  
JOËL BRIED

Ibis ◽  
2008 ◽  
Vol 120 (2) ◽  
pp. 229-230 ◽  
Author(s):  
C. J. O. HARRISON ◽  
C. A. WALKER

Zootaxa ◽  
2017 ◽  
Vol 4236 (1) ◽  
pp. 135
Author(s):  
RICHARD SCHODDE ◽  
ALAN J.D. TENNYSON ◽  
JEFF G. GROTH ◽  
JONAS LAI ◽  
PAUL SCOFIELD ◽  
...  

On-going conflict in use of the name Diomedea exulans Linnaeus, 1758 for different taxa of the great albatrosses (Wandering Albatross complex) is resolved by neotypification, fixing the name to the large subantarctic form formerly often known as D. chionoptera Salvin, 1896. Application of all scientific names in the complex is reviewed, an annotated synonymy for the large subantarctic form is provided, available names for smaller, temperate-zone forms are listed, and unavailable and otherwise invalid names referable to the complex are identified. Syntypes of D. chionoptera and D. spadicea J.F. Gmelin, 1789 are lectotypified as well, fixing their names as synonyms of D. exulans to prevent possible disturbance to in-use names for the smaller, temperate-zone forms. 


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